Intra-seasonal and Annual variability of the Agulhas Current from satellite observations

Size: px
Start display at page:

Download "Intra-seasonal and Annual variability of the Agulhas Current from satellite observations"

Transcription

1 Intra-seasonal and Annual variability of the Agulhas Current from satellite observations Marjolaine Krug Ecosystem Earth Observation (CSIR NRE) Pierrick Penven Laboratoire de Physique des Océans (IRD) Jean Tournadre Laboratoire d'océanographie Spatiale (IFREMER) --> Thanks to US Office of Naval Research for funding registration

2 The Agulhas Current system The northern Agulhas Current is connected to the wind driven circulation of the South Indian Ocean through its source regions in the Mozambique Channel and south of Madagascar. Large anticyclonic eddies from the source regions can lead to the formation of Natal Pulses (De Ruijter 1999, Tsugawa 2010). These Natal Pulses have been thought to drive most of the variability north of the Retroflection. The seasonality of the Agulhas Current has been a matter of debate: numerical ocean model show an annual cycle which has not been confirmed in satellite or in-situ observations. 2

3 Approach The Agulhas Current is a strong and narrow flow which is well captured in satellite observations of Sea Surface Temperature (SST) and geostrophic currents (derived from the altimeters Sea Surface Height (SSH) measurement). We use the distinct thermal and SSH signature of the Agulhas Current to: 1) Track the Agulhas Current s path 2) Assess changes in the strength of the Agulhas Current flow 3

4 Data Altimetry Close to 20 years of data available 10 to 35 day repeat cycle along particular track Only large (>50km) and fairly persistent (>1 week) features of the circulation can be mapped with altimetry. Altimeters not good within 50km off the coast due to land contamination and large uncertainties in geophysical corrections Microwave SST and Tracks from the Jason 1, Jason 2 and Envisat altimeters over a 1 week period ( to ) 4

5 Data Infra Red SST Observations of SST from space have been available for close to 30 years, making SST one of the preferred remote sensing variable to study climate change. High frequency acquisitions from MSG-2 SEVIRI significantly improve our imaging capacity in the Agulhas Current Use OSI-SAF hourly SST dataset from CERSAT Available since June 2006 at a 5km resolution But cloud contamination of IR-SST images is a major problem in the region. Over the Agulhas Current core, about 5 times as much water vapor is transferred to the atmosphere in comparisons to neighboring waters (Rouault et al. 2000). The Agulhas Retroflection also constitutes one of the most significant region of heat flux loss globally (Lutjeharms, 2006). Climatology of the number of monthly SST observations available from the Pathfinfer 5.2 (a) and the hourly Seviri dataset (b). (Picture from F. Dufois) 5

6 Tracking the Agulhas Current with SST Compute 3 day moving averages derived from the Seviri hourly dataset Use local peak maximum to detect core Identify position of inshore front as maximum SST gradient between core position and coast Define Natal Pulse as offshore deviation in the path of the Agulhas Current > 30 km from mean position within 10-day low-passed time-series. Example of algorithm output for Agulhas Current path detection. Green dots show position northern wall on 18 March

7 Tracking the Agulhas Current with SST No Annual cycle seen in position of Agulhas Current. Variability in the position of the Agulhas Current inshore front is not the same everywhere. There is an increase in the number of Natal Pulses from northern Natal Bight to Port Edward. There is a decrease in the number of Natal Pulses south of Port Edward. Only 1.6 Natal Pulses per year reach the southern Agulhas region (Port Elizabeth transect). This is in contradiction to estimates of 4 to 6 Natal Pulses per year derived from numerical models. Why do so few pulses reach the southern Agulhas Current? 7

8 Tracking the Agulhas Current with SST Upstream instabilities are triggered during the passage of Natal Pulses. These instabilities show as meanders upstream of Natal Pulses. During their southward progression, adjacent meanders (including Natal Pulses) can evolve rapidly to 1) dissipate, 2) merge or in some rare occasion, 3) detach from the Agulhas Current 1) Dissipation Natal Pulse interacts with topography to generate upstream instability at the inshore Agulhas Current front. Initial instability dissipates away from expanding upstream instability Note the potential influence of offshore anti-cyclonic eddy on the evolution of Agulhas Current meander 8

9 Tracking the Agulhas Current with SST 1b) Dissipation 9

10 Tracking the Agulhas Current with SST 2) Merging Natal Pulse interacts with topography to generate upstream instability at the inshore Agulhas Current front. Upstream and initial instabilities merge Again we see the potential influence of offshore anticyclonic eddy on the evolution of Natal Pulse 10

11 Tracking the Agulhas Current with SST 3) Detachment Natal Pulse interacts with topography to generate upstream instability at the inshore Agulhas Current front. Initial instabilities becomes occluded eddy and moves offshore Again potential influence of offshore anticyclonic eddy on the evolution of Agulhas Current meander 11

12 Tracking the Agulhas Current with Altimetry In the southern Agulhas Current (south of 34S), altimetry can be used to track the position of the Agulhas Current quite successfully. Analysis conducted with SST and altimetry both show increased number of meanders south of Port Elizabeth. This makes region of Port Elizabeth well suited to track Agulhas Current. Using cross-stream coordinate approach we look at the intrinsic variability of the geostrophic current flow within the Agulhas Current offshore Port Elizabeth. 12

13 Variations in the strength of the Agulhas Current s flow The absolute geostrophic velocities derived from the AVISO merged product at the position of the Agulhas Current core (varying) have a distinct annual cycle Geostrophic current speeds within Agulhas Current core (grey). Black line shows current speeds low-passed with a cut-off at 300 days. Wavelet transform for geostrophic current speed within Agulhas Current core 13

14 Variations in the strength of the Agulhas Current s flow Climatology shows peak in Feb-March and through in Jul-Aug in agreement with oceanic numerical model results. Monthly climatology for geostrophic current speed within the Agulhas Current core Spectra for geostrophic current speed within Agulhas Current core 14

15 Variations in the strength of the Agulhas Current s flow Analysis conducted on a Gausian Amplitude fit to along-track (1Hz) geostrophic velocities (a) produces similar results. 15

16 Conclusions Variations in the position of the Agulhas Current are dominated by the intermittent passage of large offshore meanders with no visible annual cycle. The number of observed large offshore meanders decreases from 28S to 34S and then increases again south of Port Elizabeth, making the area offshore Port Elizabeth an attractive region to monitor the variability of the Agulhas Current. The non-linear evolution of large meanders in the northern Agulhas Current is a possible indication of a direct cascade of energy from the westward propagating ocean eddies towards the smaller scales, in agreement with the findings of Xiaoming et al (2010). Natal Pulses are much more complex than previously anticipated and more research is required to better understand how energy is lost from Natal Pulse to surrounding flow and what the influence of offshore eddies on Natal Pulses are. Do ocean models accurately represent the dynamics of Natal Pulses? The pre-supposed links between Natal Pulses and Agulhas Rings formation must be re-examined. Within the Agulhas Current proper, it is the annual cycle that dominates the variability with a stronger flow in austral summer. More research / data is needed to link the altimetry signal to volume transports in the Agulhas Current. For more info look at Rouault and Penven, JGR-Oceans (2011) and Krug and Tournadre, GRL (2012) 16

COASTAL ALTIMETRY AT THE CENTRE DE TOPOGRAPHIE DES OCEANS ET DE L HYDROSPHERE

COASTAL ALTIMETRY AT THE CENTRE DE TOPOGRAPHIE DES OCEANS ET DE L HYDROSPHERE COASTAL ALTIMETRY AT THE CENTRE DE TOPOGRAPHIE DES OCEANS ET DE L HYDROSPHERE Florence Birol, Caroline Delebecque, Laurent Roblou, Sara Fleury, Rosemary Morrow, Fernando Niño and Guillaume Pernot http://ctoh.legos.obs-mip.fr/

More information

Ocean surface currents: What can we do with Earth Observations?

Ocean surface currents: What can we do with Earth Observations? Ocean surface currents: What can we do with Earth Observations? G. Larnicol, G.Dibarboure, Y Faugère, I Pujol, S Labroue, C Dufau, MH Rio, Space Oceanography Division, CLS Globcurrent UCM 7-9 march, Brest

More information

GlobCurrent User Consultation Modelling & Prediction needs Mike Bell November Crown copyright Met Office

GlobCurrent User Consultation Modelling & Prediction needs Mike Bell November Crown copyright Met Office GlobCurrent User Consultation Modelling & Prediction needs Mike Bell November 2014 Crown copyright Met Office Contents Different types of - motion - use - modelling and prediction - data Some examples

More information

Huai-Min Zhang & NOAAGlobalTemp Team

Huai-Min Zhang & NOAAGlobalTemp Team Improving Global Observations for Climate Change Monitoring using Global Surface Temperature (& beyond) Huai-Min Zhang & NOAAGlobalTemp Team NOAA National Centers for Environmental Information (NCEI) [formerly:

More information

Near Real Time Blended Surface Winds

Near Real Time Blended Surface Winds Near Real Time Blended Surface Winds I. Summary To enhance the spatial and temporal resolutions of surface wind, the remotely sensed retrievals are blended to the operational ECMWF wind analyses over the

More information

Ocean eddies off southern Norway

Ocean eddies off southern Norway Ocean eddies off southern Norway Ingerid Fossum Avslutningskonferanse MARE, Scandic Hotell Edderkoppen, Oslo, 12-13 oktober 2005 Main questions: Does MI-POM reproduce the circulation pattern in Skagerrak?

More information

CCAR Near Real Time and Historical Altimeter Data Server

CCAR Near Real Time and Historical Altimeter Data Server CCAR Near Real Time and Historical Altimeter Data Server http://eddy.colorado.edu/ccar/data_viewer/index Bob Leben March 2015 GCOOS BOD Meeting CCAR Near Real Time Altimeter Data System! In late 1995,

More information

The relationships between Argo Steric Height and AVISO Sea Surface Height

The relationships between Argo Steric Height and AVISO Sea Surface Height The relationships between Argo Steric Height and AVISO Sea Surface Height Phil Sutton 1 Dean Roemmich 2 1 National Institute of Water and Atmospheric Research, New Zealand 2 Scripps Institution of Oceanography,

More information

Operational Monitoring of Mesoscale Upper Layer Circulation Fields with Multi-Satellite Technology in the Southwestern Atlantic Ocean

Operational Monitoring of Mesoscale Upper Layer Circulation Fields with Multi-Satellite Technology in the Southwestern Atlantic Ocean Operational Monitoring of Mesoscale Upper Layer Circulation Fields with Multi-Satellite Technology in the Southwestern Atlantic Ocean Marcio Vianna & Viviane Menezes VM Oceanica Ltda AGU Ocean Science

More information

DIURNAL CYCLE OF CLOUD SYSTEM MIGRATION OVER SUMATERA ISLAND

DIURNAL CYCLE OF CLOUD SYSTEM MIGRATION OVER SUMATERA ISLAND DIURNAL CYCLE OF CLOUD SYSTEM MIGRATION OVER SUMATERA ISLAND NAMIKO SAKURAI 1, FUMIE MURATA 2, MANABU D. YAMANAKA 1,3, SHUICHI MORI 3, JUN-ICHI HAMADA 3, HIROYUKI HASHIGUCHI 4, YUDI IMAN TAUHID 5, TIEN

More information

A Project to Create Bias-Corrected Marine Climate Observations from ICOADS

A Project to Create Bias-Corrected Marine Climate Observations from ICOADS A Project to Create Bias-Corrected Marine Climate Observations from ICOADS Shawn R. Smith 1, Mark A. Bourassa 1, Scott Woodruff 2, Steve Worley 3, Elizabeth Kent 4, Simon Josey 4, Nick Rayner 5, and Richard

More information

Satellite Altimetry Missions

Satellite Altimetry Missions Satellite Altimetry Missions SINGAPORE SPACE SYMPOSIUM 30 TH SEPTEMBER 2015 AUTHORS: LUCA SIMONINI/ ERICK LANSARD/ JOSE M GONZALEZ www.thalesgroup.com Table of Content General Principles and Applications

More information

Mapping Sea Ice using a Microwave Imager/Sounder (SSMIS) Part III: Make corrections to sea ice map and compare to NASA product

Mapping Sea Ice using a Microwave Imager/Sounder (SSMIS) Part III: Make corrections to sea ice map and compare to NASA product Title: Product Type: Developer: Mapping Sea Ice using a Microwave Imager/Sounder (SSMIS) Part I: Download and import SSMIS data Part II: Calculate and Map Sea Ice Concentration Part III: Make corrections

More information

Fundamentals of Climate Change (PCC 587): Water Vapor

Fundamentals of Climate Change (PCC 587): Water Vapor Fundamentals of Climate Change (PCC 587): Water Vapor DARGAN M. W. FRIERSON UNIVERSITY OF WASHINGTON, DEPARTMENT OF ATMOSPHERIC SCIENCES DAY 2: 9/30/13 Water Water is a remarkable molecule Water vapor

More information

Leif Thomas Environmental Earth System Science Stanford University

Leif Thomas Environmental Earth System Science Stanford University Leif Thomas Environmental Earth System Science Stanford University z (m) 0 200 400 600 σ θ on WOCE line A22 26.6 26.4 EDW www.climode.org CLIMODE was a process study (2005-2009) of the formation, subduction,

More information

Development of an Integrated Data Product for Hawaii Climate

Development of an Integrated Data Product for Hawaii Climate Development of an Integrated Data Product for Hawaii Climate Jan Hafner, Shang-Ping Xie (PI)(IPRC/SOEST U. of Hawaii) Yi-Leng Chen (Co-I) (Meteorology Dept. Univ. of Hawaii) contribution Georgette Holmes

More information

Satellite Altimetry. Wolfgang Bosch Deutsches Geodätisches Forschungsinstitut (DGFI), München email: bosch@dgfi.badw.de

Satellite Altimetry. Wolfgang Bosch Deutsches Geodätisches Forschungsinstitut (DGFI), München email: bosch@dgfi.badw.de Satellite Altimetry Wolfgang Bosch Deutsches Geodätisches Forschungsinstitut (DGFI), München email: bosch@dgfi.badw.de Objectives You shall recognize satellite altimetry as an operational remote sensing

More information

Non-parametric estimation of seasonal variations in GNSS-derived time series

Non-parametric estimation of seasonal variations in GNSS-derived time series Military University of Technology, Poland (marta.gruszczynska@wat.edu.pl) Seasonal variations in the frame sites can bias the frame realization. I would like to invite you to click on each of the four

More information

Present Status of Coastal Environmental Monitoring in Korean Waters. Using Remote Sensing Data

Present Status of Coastal Environmental Monitoring in Korean Waters. Using Remote Sensing Data Present Status of Coastal Environmental Monitoring in Korean Waters Using Remote Sensing Data Sang-Woo Kim, Young-Sang Suh National Fisheries Research & Development Institute #408-1, Shirang-ri, Gijang-up,

More information

ATMS 310 Jet Streams

ATMS 310 Jet Streams ATMS 310 Jet Streams Jet Streams A jet stream is an intense (30+ m/s in upper troposphere, 15+ m/s lower troposphere), narrow (width at least ½ order magnitude less than the length) horizontal current

More information

Climate Models: Uncertainties due to Clouds. Joel Norris Assistant Professor of Climate and Atmospheric Sciences Scripps Institution of Oceanography

Climate Models: Uncertainties due to Clouds. Joel Norris Assistant Professor of Climate and Atmospheric Sciences Scripps Institution of Oceanography Climate Models: Uncertainties due to Clouds Joel Norris Assistant Professor of Climate and Atmospheric Sciences Scripps Institution of Oceanography Global mean radiative forcing of the climate system for

More information

What has 16 years of Satellite Radar Altimetry given us towards Global monitoring of the Earth s inland water resources?

What has 16 years of Satellite Radar Altimetry given us towards Global monitoring of the Earth s inland water resources? What has 16 years of Satellite Radar Altimetry given us towards Global monitoring of the Earth s inland water resources? P.A.M Berry (1), R.G.Smith (1), J.A.Freeman (1) 1. EAPRS Laboratory, De Montfort

More information

Exploiting the potential of an improved multimission altimetric data set over the coastal ocean

Exploiting the potential of an improved multimission altimetric data set over the coastal ocean GEOPHYSICAL RESEARCH LETTERS, VOL. 35, L10601, doi:10.1029/2008gl033488, 2008 Exploiting the potential of an improved multimission altimetric data set over the coastal ocean J. Bouffard, 1 S. Vignudelli,

More information

Monsoon Variability and Extreme Weather Events

Monsoon Variability and Extreme Weather Events Monsoon Variability and Extreme Weather Events M Rajeevan National Climate Centre India Meteorological Department Pune 411 005 rajeevan@imdpune.gov.in Outline of the presentation Monsoon rainfall Variability

More information

Jason-2 GDR Quality Assessment Report. Cycle 059 07-02-2010 / 17-02-2010. M. Ablain, CLS. P. Thibaut, CLS

Jason-2 GDR Quality Assessment Report. Cycle 059 07-02-2010 / 17-02-2010. M. Ablain, CLS. P. Thibaut, CLS Jason-2 GDR Quality Assessment Report Cycle 059 07-02-2010 / 17-02-2010 Prepared by : S. Philipps, CLS M. Ablain, CLS P. Thibaut, CLS Accepted by : Approved by : DT/AQM, CLS E. Bronner, CNES Edition 01.0,

More information

High Resolution Altimetry Reveals New Characteristics of the December 2004 Indian Ocean Tsunami

High Resolution Altimetry Reveals New Characteristics of the December 2004 Indian Ocean Tsunami Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version will be available on the publisher Web site

More information

Data Assimilation and Operational Oceanography: The Mercator experience

Data Assimilation and Operational Oceanography: The Mercator experience www.mercator.eu.org Data Assimilation and Operational Oceanography: The Mercator experience Benoît Tranchant btranchant@mercator-ocean.fr And the Mercator-Ocean Assimilation Team (Marie Drevillon, Elisabeth

More information

Hurricanes. Characteristics of a Hurricane

Hurricanes. Characteristics of a Hurricane Hurricanes Readings: A&B Ch. 12 Topics 1. Characteristics 2. Location 3. Structure 4. Development a. Tropical Disturbance b. Tropical Depression c. Tropical Storm d. Hurricane e. Influences f. Path g.

More information

The role of Earth Observation Satellites to observe rainfall. Riko Oki National Space Development Agency of Japan

The role of Earth Observation Satellites to observe rainfall. Riko Oki National Space Development Agency of Japan The role of Earth Observation Satellites to observe rainfall Riko Oki National Space Development Agency of Japan Outline 1. Importance of rain measurement 2. TRMM and Its Achievements 3. Outline of GPM

More information

Marine route optimization. Jens Olaf Pepke Pedersen Polar DTU / DTU Space www.polar.dtu.dk www.space.dtu.dk

Marine route optimization. Jens Olaf Pepke Pedersen Polar DTU / DTU Space www.polar.dtu.dk www.space.dtu.dk Marine route optimization Jens Olaf Pepke Pedersen Polar DTU / DTU Space www.polar.dtu.dk www.space.dtu.dk Early attempt at route optimization Jens Munk (1579-1628) Tries to find a way to India through

More information

Solar Flux and Flux Density. Lecture 3: Global Energy Cycle. Solar Energy Incident On the Earth. Solar Flux Density Reaching Earth

Solar Flux and Flux Density. Lecture 3: Global Energy Cycle. Solar Energy Incident On the Earth. Solar Flux Density Reaching Earth Lecture 3: Global Energy Cycle Solar Flux and Flux Density Planetary energy balance Greenhouse Effect Vertical energy balance Latitudinal energy balance Seasonal and diurnal cycles Solar Luminosity (L)

More information

Daily High-resolution Blended Analyses for Sea Surface Temperature

Daily High-resolution Blended Analyses for Sea Surface Temperature Daily High-resolution Blended Analyses for Sea Surface Temperature by Richard W. Reynolds 1, Thomas M. Smith 2, Chunying Liu 1, Dudley B. Chelton 3, Kenneth S. Casey 4, and Michael G. Schlax 3 1 NOAA National

More information

II. Related Activities

II. Related Activities (1) Global Cloud Resolving Model Simulations toward Numerical Weather Forecasting in the Tropics (FY2005-2010) (2) Scale Interaction and Large-Scale Variation of the Ocean Circulation (FY2006-2011) (3)

More information

Temporal variation in snow cover over sea ice in Antarctica using AMSR-E data product

Temporal variation in snow cover over sea ice in Antarctica using AMSR-E data product Temporal variation in snow cover over sea ice in Antarctica using AMSR-E data product Michael J. Lewis Ph.D. Student, Department of Earth and Environmental Science University of Texas at San Antonio ABSTRACT

More information

Evaluating GCM clouds using instrument simulators

Evaluating GCM clouds using instrument simulators Evaluating GCM clouds using instrument simulators University of Washington September 24, 2009 Why do we care about evaluation of clouds in GCMs? General Circulation Models (GCMs) project future climate

More information

Overview of the IR channels and their applications

Overview of the IR channels and their applications Ján Kaňák Slovak Hydrometeorological Institute Jan.kanak@shmu.sk Overview of the IR channels and their applications EUMeTrain, 14 June 2011 Ján Kaňák, SHMÚ 1 Basics in satellite Infrared image interpretation

More information

Satellite Derived Dynamic Ocean Currents in the Arctic. Jens Olaf Pepke Pedersen Polar DTU / DTU Space www.polar.dtu.dk www.space.dtu.

Satellite Derived Dynamic Ocean Currents in the Arctic. Jens Olaf Pepke Pedersen Polar DTU / DTU Space www.polar.dtu.dk www.space.dtu. Satellite Derived Dynamic Ocean Currents in the Arctic Jens Olaf Pepke Pedersen Polar DTU / DTU Space www.polar.dtu.dk www.space.dtu.dk Benefits of exploiting ocean currents Benjamin Franklins map of the

More information

Interactions between Hurricane Catarina (2004) and Warm Core Rings in the South Atlantic Ocean Marcio Vianna & Viviane Menezes or,

Interactions between Hurricane Catarina (2004) and Warm Core Rings in the South Atlantic Ocean Marcio Vianna & Viviane Menezes or, Interactions between Hurricane Catarina (2004) and Warm Core Rings in the South Atlantic Ocean or, International Meeting on South Atlantic Cyclones Track Prediction and Risk Evaluation May 30, 2008 There

More information

Integrated Global Carbon Observations. Beverly Law Prof. Global Change Forest Science Science Chair, AmeriFlux Network Oregon State University

Integrated Global Carbon Observations. Beverly Law Prof. Global Change Forest Science Science Chair, AmeriFlux Network Oregon State University Integrated Global Carbon Observations Beverly Law Prof. Global Change Forest Science Science Chair, AmeriFlux Network Oregon State University Total Anthropogenic Emissions 2008 Total Anthropogenic CO 2

More information

Thompson/Ocean 420/Winter 2005 Tide Dynamics 1

Thompson/Ocean 420/Winter 2005 Tide Dynamics 1 Thompson/Ocean 420/Winter 2005 Tide Dynamics 1 Tide Dynamics Dynamic Theory of Tides. In the equilibrium theory of tides, we assumed that the shape of the sea surface was always in equilibrium with the

More information

Potential Climate Impact of Large-Scale Deployment of Renewable Energy Technologies. Chien Wang (MIT)

Potential Climate Impact of Large-Scale Deployment of Renewable Energy Technologies. Chien Wang (MIT) Potential Climate Impact of Large-Scale Deployment of Renewable Energy Technologies Chien Wang (MIT) 1. A large-scale installation of windmills Desired Energy Output: supply 10% of the estimated world

More information

SPATIAL DISTRIBUTION OF NORTHERN HEMISPHERE WINTER TEMPERATURES OVER THE SOLAR CYCLE DURING THE LAST 130 YEARS

SPATIAL DISTRIBUTION OF NORTHERN HEMISPHERE WINTER TEMPERATURES OVER THE SOLAR CYCLE DURING THE LAST 130 YEARS SPATIAL DISTRIBUTION OF NORTHERN HEMISPHERE WINTER TEMPERATURES OVER THE SOLAR CYCLE DURING THE LAST 130 YEARS Kalevi Mursula, Ville Maliniemi, Timo Asikainen ReSoLVE Centre of Excellence Department of

More information

2.3 Spatial Resolution, Pixel Size, and Scale

2.3 Spatial Resolution, Pixel Size, and Scale Section 2.3 Spatial Resolution, Pixel Size, and Scale Page 39 2.3 Spatial Resolution, Pixel Size, and Scale For some remote sensing instruments, the distance between the target being imaged and the platform,

More information

Dynamics IV: Geostrophy SIO 210 Fall, 2014

Dynamics IV: Geostrophy SIO 210 Fall, 2014 Dynamics IV: Geostrophy SIO 210 Fall, 2014 Geostrophic balance Thermal wind Dynamic height READING: DPO: Chapter (S)7.6.1 to (S)7.6.3 Stewart chapter 10.3, 10.5, 10.6 (other sections are useful for those

More information

2. The map below shows high-pressure and low-pressure weather systems in the United States.

2. The map below shows high-pressure and low-pressure weather systems in the United States. 1. Which weather instrument has most improved the accuracy of weather forecasts over the past 40 years? 1) thermometer 3) weather satellite 2) sling psychrometer 4) weather balloon 6. Wind velocity is

More information

Guy Carpenter Asia-Pacific Climate Impact Centre, School of energy and Environment, City University of Hong Kong

Guy Carpenter Asia-Pacific Climate Impact Centre, School of energy and Environment, City University of Hong Kong Diurnal and Semi-diurnal Variations of Rainfall in Southeast China Judy Huang and Johnny Chan Guy Carpenter Asia-Pacific Climate Impact Centre School of Energy and Environment City University of Hong Kong

More information

Dr. Gary S. E. Lagerloef Earth and Space Research, 1910 Fairview Ave E

Dr. Gary S. E. Lagerloef Earth and Space Research, 1910 Fairview Ave E Establishing a NOAA Operational Data Center for Surface Currents Derived from Satellite Altimeters and Scatterometers; Pilot Study for the Tropical Pacific Including the Hawaiian Islands and US Territorial

More information

Real-time Ocean Forecasting Needs at NCEP National Weather Service

Real-time Ocean Forecasting Needs at NCEP National Weather Service Real-time Ocean Forecasting Needs at NCEP National Weather Service D.B. Rao NCEP Environmental Modeling Center December, 2005 HYCOM Annual Meeting, Miami, FL COMMERCE ENVIRONMENT STATE/LOCAL PLANNING HEALTH

More information

Cloud-SST feedback in southeastern tropical Atlantic anomalous events

Cloud-SST feedback in southeastern tropical Atlantic anomalous events Click Here for Full Article JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 112,, doi:10.1029/2006jc003626, 2007 Cloud-SST feedback in southeastern tropical Atlantic anomalous events Bohua Huang 1,2 and Zeng-Zhen

More information

Lecture 4: Pressure and Wind

Lecture 4: Pressure and Wind Lecture 4: Pressure and Wind Pressure, Measurement, Distribution Forces Affect Wind Geostrophic Balance Winds in Upper Atmosphere Near-Surface Winds Hydrostatic Balance (why the sky isn t falling!) Thermal

More information

User s Guide. Zuniga Point. Point Loma

User s Guide. Zuniga Point. Point Loma User s Guide Welcome to the Location File for San Diego Bay, located in the southwestern corner of the U.S. San Diego Bay has an excellent natural harbor, which has made it a busy commercial port. San

More information

Brief overview of ESA EO Missions & Programmes

Brief overview of ESA EO Missions & Programmes Available GOCE Products Brief overview of ESA EO Missions & Programmes Pierre-Philippe Mathieu, ESA-EOP SAGOMA KO Meeting, 24 Nov, Liege, Belgium ESA EO : Overall Framework CCI, STSE GMES EOMD Available

More information

COASTAL WIND ANALYSIS BASED ON ACTIVE RADAR IN QINGDAO FOR OLYMPIC SAILING EVENT

COASTAL WIND ANALYSIS BASED ON ACTIVE RADAR IN QINGDAO FOR OLYMPIC SAILING EVENT COASTAL WIND ANALYSIS BASED ON ACTIVE RADAR IN QINGDAO FOR OLYMPIC SAILING EVENT XIAOMING LI a, b, * a Remote Sensing Technology Institute, German Aerospace Center (DLR), Oberpfaffenhofen, 82234, Germany

More information

Slide 1. Slide 2. Slide 3

Slide 1. Slide 2. Slide 3 Satellite Analysis of Sea Surface Temperatures in the Florida Keys to Monitor Coral Reef Health NASA Stennis Space Center Earthzine/DEVELOP Virtual Poster Session, Summer 2011 Video Transcript Slide 1

More information

NOTES AND CORRESPONDENCE. Interaction of Mesoscale Variability with Large-Scale Waves in the Argentine Basin

NOTES AND CORRESPONDENCE. Interaction of Mesoscale Variability with Large-Scale Waves in the Argentine Basin MARCH 2007 N O T E S A N D C O R R E S P O N D E N C E 787 NOTES AND CORRESPONDENCE Interaction of Mesoscale Variability with Large-Scale Waves in the Argentine Basin LEE-LUENG FU Jet Propulsion Laboratory,

More information

Active Fire Monitoring: Product Guide

Active Fire Monitoring: Product Guide Active Fire Monitoring: Product Guide Doc.No. Issue : : EUM/TSS/MAN/15/801989 v1c EUMETSAT Eumetsat-Allee 1, D-64295 Darmstadt, Germany Tel: +49 6151 807-7 Fax: +49 6151 807 555 Date : 14 April 2015 http://www.eumetsat.int

More information

Cyclonic Eddies Northeast of the Campeche Bank from Altimetry Data

Cyclonic Eddies Northeast of the Campeche Bank from Altimetry Data 623 Cyclonic Eddies Northeast of the Campeche Bank from Altimetry Data JORGE ZAVALA-HIDALGO, STEVEN L. MOREY, AND JAMES J. O BRIEN Center for Ocean Atmospheric Prediction Studies, The Florida State University,

More information

Authors: Thierry Phulpin, CNES Lydie Lavanant, Meteo France Claude Camy-Peyret, LPMAA/CNRS. Date: 15 June 2005

Authors: Thierry Phulpin, CNES Lydie Lavanant, Meteo France Claude Camy-Peyret, LPMAA/CNRS. Date: 15 June 2005 Comments on the number of cloud free observations per day and location- LEO constellation vs. GEO - Annex in the final Technical Note on geostationary mission concepts Authors: Thierry Phulpin, CNES Lydie

More information

Overview. What is EMR? Electromagnetic Radiation (EMR) LA502 Special Studies Remote Sensing

Overview. What is EMR? Electromagnetic Radiation (EMR) LA502 Special Studies Remote Sensing LA502 Special Studies Remote Sensing Electromagnetic Radiation (EMR) Dr. Ragab Khalil Department of Landscape Architecture Faculty of Environmental Design King AbdulAziz University Room 103 Overview What

More information

NOWCASTING OF PRECIPITATION Isztar Zawadzki* McGill University, Montreal, Canada

NOWCASTING OF PRECIPITATION Isztar Zawadzki* McGill University, Montreal, Canada NOWCASTING OF PRECIPITATION Isztar Zawadzki* McGill University, Montreal, Canada 1. INTRODUCTION Short-term methods of precipitation nowcasting range from the simple use of regional numerical forecasts

More information

Coral Reef Watch A Satellite View. AE Strong. Satellite SST Anomalies. January 2002 May 2003

Coral Reef Watch A Satellite View. AE Strong. Satellite SST Anomalies. January 2002 May 2003 Coral Reef Watch A Satellite View AE Strong Satellite SST Anomalies January 2002 May 2003 Coral Reefs, Climate, and Coral Bleaching Workshop June 18-20, 2003 Turtle Bay, Oahu, HI NOAA s Program Leaders:

More information

CHAPTER 2 Energy and Earth

CHAPTER 2 Energy and Earth CHAPTER 2 Energy and Earth This chapter is concerned with the nature of energy and how it interacts with Earth. At this stage we are looking at energy in an abstract form though relate it to how it affect

More information

Indian Ocean and Monsoon

Indian Ocean and Monsoon Indo-French Workshop on Atmospheric Sciences 3-5 October 2013, New Delhi (Organised by MoES and CEFIPRA) Indian Ocean and Monsoon Satheesh C. Shenoi Indian National Center for Ocean Information Services

More information

VALIDATION AND ANALYSIS OF OCEAN PARAMETERS USING ASCAT DATA. I. Calibration and validation of ASCAT measurements

VALIDATION AND ANALYSIS OF OCEAN PARAMETERS USING ASCAT DATA. I. Calibration and validation of ASCAT measurements VALIDATION AND ANALYSIS OF OCEAN PARAMETERS USING ASCAT DATA A. Bentamy 1, F. Girard-Ardhuin 1,2, D. Croizé-Fillon 1, and P. Queffeulou 1 1 IFREMER, DOPS/LOS, BP 70, 29280 Plouzané, France 2 CNES, 2 place

More information

Analyze Weather in Cold Regions and Mountainous Terrain

Analyze Weather in Cold Regions and Mountainous Terrain Analyze Weather in Cold Regions and Mountainous Terrain Terminal Learning Objective Action: Analyze weather of cold regions and mountainous terrain Condition: Given a training mission that involves a specified

More information

REGIONAL CLIMATE AND DOWNSCALING

REGIONAL CLIMATE AND DOWNSCALING REGIONAL CLIMATE AND DOWNSCALING Regional Climate Modelling at the Hungarian Meteorological Service ANDRÁS HORÁNYI (horanyi( horanyi.a@.a@met.hu) Special thanks: : Gabriella Csima,, Péter Szabó, Gabriella

More information

Norwegian Satellite Earth Observation Database for Marine and Polar Research http://normap.nersc.no USE CASES

Norwegian Satellite Earth Observation Database for Marine and Polar Research http://normap.nersc.no USE CASES Norwegian Satellite Earth Observation Database for Marine and Polar Research http://normap.nersc.no USE CASES The NORMAP Project team has prepared this document to present functionality of the NORMAP portal.

More information

Tropical Cloud Population

Tropical Cloud Population Tropical Cloud Population Before Satellites Visual Observation View from and aircraft flying over the South China Sea Radiosonde Data Hot tower hypothesis Riehl & Malkus 1958 Satellite Observations Post

More information

SAFNWC/MSG Cloud type/height. Application for fog/low cloud situations

SAFNWC/MSG Cloud type/height. Application for fog/low cloud situations SAFNWC/MSG Cloud type/height. Application for fog/low cloud situations 22 September 2011 Hervé LE GLEAU, Marcel DERRIEN Centre de météorologie Spatiale. Lannion Météo-France 1 Fog or low level clouds?

More information

Appendix C - Risk Assessment: Technical Details. Appendix C - Risk Assessment: Technical Details

Appendix C - Risk Assessment: Technical Details. Appendix C - Risk Assessment: Technical Details Appendix C - Risk Assessment: Technical Details Page C1 C1 Surface Water Modelling 1. Introduction 1.1 BACKGROUND URS Scott Wilson has constructed 13 TUFLOW hydraulic models across the London Boroughs

More information

Volcanic Ash Monitoring: Product Guide

Volcanic Ash Monitoring: Product Guide Doc.No. Issue : : EUM/TSS/MAN/15/802120 v1a EUMETSAT Eumetsat-Allee 1, D-64295 Darmstadt, Germany Tel: +49 6151 807-7 Fax: +49 6151 807 555 Date : 2 June 2015 http://www.eumetsat.int WBS/DBS : EUMETSAT

More information

Dynamics of the Southern California Current System

Dynamics of the Southern California Current System UNIVERSITY OF CALIFORNIA, SAN DIEGO Dynamics of the Southern California Current System A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Oceanography

More information

Global Seasonal Phase Lag between Solar Heating and Surface Temperature

Global Seasonal Phase Lag between Solar Heating and Surface Temperature Global Seasonal Phase Lag between Solar Heating and Surface Temperature Summer REU Program Professor Tom Witten By Abstract There is a seasonal phase lag between solar heating from the sun and the surface

More information

climate science A SHORT GUIDE TO This is a short summary of a detailed discussion of climate change science.

climate science A SHORT GUIDE TO This is a short summary of a detailed discussion of climate change science. A SHORT GUIDE TO climate science This is a short summary of a detailed discussion of climate change science. For more information and to view the full report, visit royalsociety.org/policy/climate-change

More information

Chapter Overview. Bathymetry. Measuring Bathymetry. Echo Sounding Record. Measuring Bathymetry. CHAPTER 3 Marine Provinces

Chapter Overview. Bathymetry. Measuring Bathymetry. Echo Sounding Record. Measuring Bathymetry. CHAPTER 3 Marine Provinces Chapter Overview CHAPTER 3 Marine Provinces The study of bathymetry charts ocean depths and ocean floor topography. Echo sounding and satellites are efficient bathymetric tools. Most ocean floor features

More information

ENSO: Recent Evolution, Current Status and Predictions. Update prepared by: Climate Prediction Center / NCEP 29 June 2015

ENSO: Recent Evolution, Current Status and Predictions. Update prepared by: Climate Prediction Center / NCEP 29 June 2015 ENSO: Recent Evolution, Current Status and Predictions Update prepared by: Climate Prediction Center / NCEP 29 June 2015 Outline Summary Recent Evolution and Current Conditions Oceanic Niño Index (ONI)

More information

NEAR-SHORE CIRCULATION IN THE CALIFORNIA CURRENT

NEAR-SHORE CIRCULATION IN THE CALIFORNIA CURRENT Calif. Mar. Res. Comm., CalCOFZ Rept., 16 : 5i65, 1972 NEARSHORE CRCULATON N THE CALFORNA CURRENT RCHARD A. SCHWARTZLOSE and JOSEPH 1. RED Scripps nstitution of Oceanography La Jolla, California A great

More information

How Do Oceans Affect Weather and Climate?

How Do Oceans Affect Weather and Climate? How Do Oceans Affect Weather and Climate? In Learning Set 2, you explored how water heats up more slowly than land and also cools off more slowly than land. Weather is caused by events in the atmosphere.

More information

Severe Weather & Hazards Related Research at CREST

Severe Weather & Hazards Related Research at CREST Severe Weather & Hazards Related Research at CREST (Lead Scientists) Z. Johnny Luo, Nir Krakauer, Shayesteh Mahani, Fabrice Papa, Marouane Temimi and Brian Vant Hull (NOAA Collaborators) Arnold Gruber,

More information

Chapter 11. The Indian Ocean

Chapter 11. The Indian Ocean Chapter 11 The Indian Ocean We now turn to the Indian Ocean, which is in several respects very different from the Pacific Ocean. The most striking difference is the seasonal reversal of the monsoon winds

More information

Name Period 4 th Six Weeks Notes 2015 Weather

Name Period 4 th Six Weeks Notes 2015 Weather Name Period 4 th Six Weeks Notes 2015 Weather Radiation Convection Currents Winds Jet Streams Energy from the Sun reaches Earth as electromagnetic waves This energy fuels all life on Earth including the

More information

Observed Cloud Cover Trends and Global Climate Change. Joel Norris Scripps Institution of Oceanography

Observed Cloud Cover Trends and Global Climate Change. Joel Norris Scripps Institution of Oceanography Observed Cloud Cover Trends and Global Climate Change Joel Norris Scripps Institution of Oceanography Increasing Global Temperature from www.giss.nasa.gov Increasing Greenhouse Gases from ess.geology.ufl.edu

More information

MSG-SEVIRI cloud physical properties for model evaluations

MSG-SEVIRI cloud physical properties for model evaluations Rob Roebeling Weather Research Thanks to: Hartwig Deneke, Bastiaan Jonkheid, Wouter Greuell, Jan Fokke Meirink and Erwin Wolters (KNMI) MSG-SEVIRI cloud physical properties for model evaluations Cloud

More information

ESCI 107/109 The Atmosphere Lesson 2 Solar and Terrestrial Radiation

ESCI 107/109 The Atmosphere Lesson 2 Solar and Terrestrial Radiation ESCI 107/109 The Atmosphere Lesson 2 Solar and Terrestrial Radiation Reading: Meteorology Today, Chapters 2 and 3 EARTH-SUN GEOMETRY The Earth has an elliptical orbit around the sun The average Earth-Sun

More information

Quadrant 1 Sea Breeze: Routing Considerations Table of Contents

Quadrant 1 Sea Breeze: Routing Considerations Table of Contents Quadrant 1 Sea Breeze: Routing Considerations Table of Contents Introduction Quadrant 1 Sea Breeze Description 2 3 Introduction Four Sea Breeze Quadrants (Figure 1) When considering a sea breeze and its

More information

Land Use/Land Cover Map of the Central Facility of ARM in the Southern Great Plains Site Using DOE s Multi-Spectral Thermal Imager Satellite Images

Land Use/Land Cover Map of the Central Facility of ARM in the Southern Great Plains Site Using DOE s Multi-Spectral Thermal Imager Satellite Images Land Use/Land Cover Map of the Central Facility of ARM in the Southern Great Plains Site Using DOE s Multi-Spectral Thermal Imager Satellite Images S. E. Báez Cazull Pre-Service Teacher Program University

More information

The impact of window size on AMV

The impact of window size on AMV The impact of window size on AMV E. H. Sohn 1 and R. Borde 2 KMA 1 and EUMETSAT 2 Abstract Target size determination is subjective not only for tracking the vector but also AMV results. Smaller target

More information

CLOUD COVER IMPACT ON PHOTOVOLTAIC POWER PRODUCTION IN SOUTH AFRICA

CLOUD COVER IMPACT ON PHOTOVOLTAIC POWER PRODUCTION IN SOUTH AFRICA CLOUD COVER IMPACT ON PHOTOVOLTAIC POWER PRODUCTION IN SOUTH AFRICA Marcel Suri 1, Tomas Cebecauer 1, Artur Skoczek 1, Ronald Marais 2, Crescent Mushwana 2, Josh Reinecke 3 and Riaan Meyer 4 1 GeoModel

More information

COLLATED QUESTIONS: ELECTROMAGNETIC RADIATION

COLLATED QUESTIONS: ELECTROMAGNETIC RADIATION COLLATED QUESTIONS: ELECTROMAGNETIC RADIATION 2011(2): WAVES Doppler radar can determine the speed and direction of a moving car. Pulses of extremely high frequency radio waves are sent out in a narrow

More information

Development of High Resolution Climatologies for Marine Protected Areas

Development of High Resolution Climatologies for Marine Protected Areas NCCARF 2010 Interna0onal Climate Change Adapta0on Conference Gold Coast, QLD Australia 29 June 01 July, 2010 Development of High Resolution Climatologies for Marine Protected Areas Karsten Shein 1, Catherine

More information

VOCALS-CUpEx: The Chilean Upwelling Experiment

VOCALS-CUpEx: The Chilean Upwelling Experiment VOCALS-CUpEx: The Chilean Upwelling Experiment René D. Garreaud 1, José Rutllant 1,2, Ricardo Muñoz 1, David Rahn 1, Marcel Ramos 2 and Dante Figueroa 3 (1) Department of Geophysics, Universidad de Chile;

More information

Monitoring of Arctic Conditions from a Virtual Constellation of Synthetic Aperture Radar Satellites

Monitoring of Arctic Conditions from a Virtual Constellation of Synthetic Aperture Radar Satellites DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Monitoring of Arctic Conditions from a Virtual Constellation of Synthetic Aperture Radar Satellites Hans C. Graber RSMAS

More information

163 ANALYSIS OF THE URBAN HEAT ISLAND EFFECT COMPARISON OF GROUND-BASED AND REMOTELY SENSED TEMPERATURE OBSERVATIONS

163 ANALYSIS OF THE URBAN HEAT ISLAND EFFECT COMPARISON OF GROUND-BASED AND REMOTELY SENSED TEMPERATURE OBSERVATIONS ANALYSIS OF THE URBAN HEAT ISLAND EFFECT COMPARISON OF GROUND-BASED AND REMOTELY SENSED TEMPERATURE OBSERVATIONS Rita Pongrácz *, Judit Bartholy, Enikő Lelovics, Zsuzsanna Dezső Eötvös Loránd University,

More information

Forecasting Solar Power with Adaptive Models A Pilot Study

Forecasting Solar Power with Adaptive Models A Pilot Study Forecasting Solar Power with Adaptive Models A Pilot Study Dr. James W. Hall 1. Introduction Expanding the use of renewable energy sources, primarily wind and solar, has become a US national priority.

More information

Climate Extremes Research: Recent Findings and New Direc8ons

Climate Extremes Research: Recent Findings and New Direc8ons Climate Extremes Research: Recent Findings and New Direc8ons Kenneth Kunkel NOAA Cooperative Institute for Climate and Satellites North Carolina State University and National Climatic Data Center h#p://assessment.globalchange.gov

More information

Lidar Remote Sensing for Forestry Applications

Lidar Remote Sensing for Forestry Applications Lidar Remote Sensing for Forestry Applications Ralph O. Dubayah* and Jason B. Drake** Department of Geography, University of Maryland, College Park, MD 0 *rdubayah@geog.umd.edu **jasdrak@geog.umd.edu 1

More information

7613-1 - Page 1. Weather Unit Exam Pre-Test Questions

7613-1 - Page 1. Weather Unit Exam Pre-Test Questions Weather Unit Exam Pre-Test Questions 7613-1 - Page 1 Name: 1) Equal quantities of water are placed in four uncovered containers with different shapes and left on a table at room temperature. From which

More information

How to analyze synoptic-scale weather patterns Table of Contents

How to analyze synoptic-scale weather patterns Table of Contents How to analyze synoptic-scale weather patterns Table of Contents Before You Begin... 2 1. Identify H and L pressure systems... 3 2. Locate fronts and determine frontal activity... 5 3. Determine surface

More information

ENVIRONMENTAL STRUCTURE AND FUNCTION: CLIMATE SYSTEM Vol. II - Low-Latitude Climate Zones and Climate Types - E.I. Khlebnikova

ENVIRONMENTAL STRUCTURE AND FUNCTION: CLIMATE SYSTEM Vol. II - Low-Latitude Climate Zones and Climate Types - E.I. Khlebnikova LOW-LATITUDE CLIMATE ZONES AND CLIMATE TYPES E.I. Khlebnikova Main Geophysical Observatory, St. Petersburg, Russia Keywords: equatorial continental climate, ITCZ, subequatorial continental (equatorial

More information

THE CURIOUS CASE OF THE PLIOCENE CLIMATE. Chris Brierley, Alexey Fedorov and Zhonghui Lui

THE CURIOUS CASE OF THE PLIOCENE CLIMATE. Chris Brierley, Alexey Fedorov and Zhonghui Lui THE CURIOUS CASE OF THE PLIOCENE CLIMATE Chris Brierley, Alexey Fedorov and Zhonghui Lui Outline Introduce the warm early Pliocene Recent Discoveries in the Tropics Reconstructing the early Pliocene SSTs

More information