ÓPTICA PURA Y APLICADA Vol. 37, núm. 3, - 2004 AERONET Web Data Access and Relational Database David Giles (1,2) 1. 1 Science Systems and Applications, Inc. (SSAI), Lanham, MD, USA 2. 2 NASA Goddard Space Flight Center, Greenbelt, MD, USA ABSTRACT: This presentation describes the design, capability, and delivery of data from the AERONET web site. In early 2004, the web site was redesigned to improve readability and content in addition to meeting NASA web site protocols. The AERONET data display interface provides aerosol optical thickness (AOT) and water vapor data including site information and related added-value products (e.g., MODIS imagery, back trajectory analyses). The download tool provides access to several AERONET products including various levels of AOT and retrievals of atmospheric optical properties. The web site also provides climatology maps and data tables of Level 2.0 AOT and 440-870nm Ángstrom parameter. The presentation further describes how the new AERONET relational database has been used in operational activities and provides examples that show how this database has been integrated into the existing web site. The AERONET relational database will also provide a mechanism to track instrument information from remote calibration facilities. Key words: AERONET data, database, download tool, climatology, relational database. PRESENTATION - 3521 - Recibido: 29 september - 2004
AERONET Web Data Access and Relational Database David Giles Science Systems and Applications, Inc. NASA Goddard Space Flight Center Autor: D. Giles 3522
AERONET Web Site! Adheres to One NASA Portal format! Redesigned static and dynamic web pages! Updated content and web links! Complies with US accessibility standards! http://aeronet.gsfc.nasa.gov Autor: D. Giles 3523
Overview! AERONET Data Access! Relational Database Autor: D. Giles 3524
Overview! AERONET Data Access! Database Design! Data Interface and Download Tool! Level 2.0 Climatology! Relational Database Autor: D. Giles 3525
Database Design: Acquisition Measurements and Transmission Relay Transmission to Receiving Station Download and Transfer Data via Internet AERONET Server Transfer Data via Internet Demonstrat Web Interface Autor: D. Giles 3526
Database Design: Processing Main Database Demonstrat Web Database Processed Hourly Stored in binary format (Raw and Processed) Indexed Hourly Transferred hourly Stored in text format (Raw and Processed) Indexed hourly Processing Software Converts satellite data into raw data files Calculates AOT and sky retrievals data using solar and radiance calibration data Scans database files Processing Software Converts binary files to text files Combines sky retrieval data into single files Scans database files Autor: D. Giles 3527
Display Interface! Time Selection! Site Selection! Map Interface! Text Interface! Additional Options! Site Type! AOT Level Autor: D. Giles 3528
Display Interface! Time Selection Menu! Display Aerosol Optical Depth Plots! Direct Data Download Links! Additional Data Products! Almucantar Retrieval Products (AERONET)! Satellite Images (AQUA/TERRA-MODIS, GOES)! MPLNET! Back Trajectory Analyses Autor: D. Giles 3529
Download Tool! Geographical Site Selection! Map! Region, Country/State, and AERONET Site Autor: D. Giles 3530
! Time Selection! AOT Products! Levels 1.0, 1.5, 2.0! Instrument number and wavelength information! Raw Radiance Data with calibration applied! Almucantar, Principal Plane (Polar), BRDF! Nakajima Almucantar Retrievals! SKYRAD.PAK Code Download Tool Autor: D. Giles 3531
! Almucantar Retrievals (Dubovik)! Spherical, Spheroid! Default Option! Advanced Parameters! Data Type Formats! All Points! Daily and Monthly Averages Download Tool Autor: D. Giles 3532
Download Tool! Wait for Data Processing! Select Accept to download zip file Autor: D. Giles 3533
! Daily Average and Weighted Average Level 2.0 Climatology! Monthly! Multi-Year Monthly! Yearly! Multi-Year Yearly Autor: D. Giles 3534
Level 2.0 Climatology AOT 500nm 870-440nm Angstrom Autor: D. Giles 3535
Data Access: Summary! Update main database hourly; transfer full database weekly! Provide visualization of AOT and other related products! Access to download all available AERONET products Autor: D. Giles 3536
Data Access: Future Work! Modify web database software to accommodate new AERONET retrieval products! Integrate AERONET web site into BAMGOMAS! Develop climatology of retrieval products! Develop flux data web interface Autor: D. Giles 3537
Data Access: Future Work! Possible multi-site download tool based on a geographic and text interface! Possible radiative forcing AERONET product Autor: D. Giles 3538
Overview! AERONET Data Access! Relational Database! Background! Design! Example Autor: D. Giles 3539
Filemaker Pro: A Relational Database! Filemaker Pro (FMPro( FMPro) ) 6 Unlimited! Provides dependable data storage! Interlinks databases to allow customizable data reports and forms! Performs complex sort and search procedures Autor: D. Giles 3540
! Supported Platforms! PC (Preferred)! Mac! Unix! Web Accessible! Internet Explorer (Preferred)! Netscape! Mozilla! FMPro 6 Software Background: User Interface Autor: D. Giles 3541
! Browse Records! Add/Modify/ Delete Records! Password Controlled! Search! Sort Background: User Privileges Autor: D. Giles 3542
Aeronet Server UNIX FTP Design FileMaker Server PC HTTP User Input Updated hourly Updated instantly WEB Autor: D. Giles 3543
! Database Links Design! Internal! External! Multi-link link (Internal and External) Autor: D. Giles 3544
Master Database Design Instrument Status Database Internal Relational Links AERONET Inventory Instrument Locations AERONET Intercalibration Data External Relational Links from AERONET Database Location Data AERONET Locations Contact Data Autor: D. Giles 3545
Example: Instrument Status Database Autor: D. Giles 3546
Example: Instrument Status Database Autor: D. Giles 3547
Relational Database: Summary! Provides reliable monitoring, storage, and tracking of operational activities, inventory, and contact information! Improves accuracy and timeliness of AERONET web site metadata! Allows user interactivity from multiple platforms, web browsers, and locations Autor: D. Giles 3548
Relational Database: Future Work! Continue to integrate FMPro with AERONET database and web site! Transfer legacy Excel intercalibration data to FMPro! Integrate additional calibration facilities (e.g., Spain, Australia, Canada, China) Autor: D. Giles 3549