Skip all navigation and jump to content Jump to site navigation Jump to section navigation.
NASA Logo - Goddard Space Flight Center + Visit NASA.gov region to select the NASA home page region to select the NASA GSFC home page
Aerosol Robotic Network (AERONET)
AEROSOL OPTICAL DEPTH AEROSOL INVERSIONS SOLAR FLUX OCEAN COLOR Maritime Aerosol Network
Web Site FeatureAERONET Data Synergy Tool - Access Earth Science data sets for AERONET sites

 +Home

 

Aerosols
AEROSOL/FLUX NETWORKS
CAMPAIGNS
COLLABORATORS
DATA
LOGISTICS
NASA PROJECTS
OPERATIONS
PUBLICATIONS
SITE INFORMATION
STAFF
SYSTEM DESCRIPTION
 
AERONET DATA ACCESS
 
AERONET Site Lists (V3)

+ Text Format

+ Google Earth Format

+ All Lists

 
SYSTEM DESCRIPTION
 
 

+ Overview
+ Measurement System
+ Operation
+ Calibration
- Data Transfer
+ Data Processing

+ Data Distribution

 
DATA TRANSFER
 
 

Satellite

Data are transmitted hourly or half hourly from the memory of the sun photometer microprocessor via the Data Collection Systems (DCS) to either of three geosynchronous satellites GOES, METEOSAT or GMS and then retransmitted to the appropriate ground receiving station. The data can be retrieved for processing by Internet linkage resulting in near real-time acquisition from almost any site on the globe excluding poleward of 80 degrees latitude. The DCS is a governmental system operated for the purpose of transmitting low volume environmental data from remote sites for various institutions and government agencies.

The frequencies, channels and transmission windows are assigned by NOAA NESDIS for GOES, EUMETSAT for METEOSAT and GMS which are broadcast in the 401 to 402 MHz range. The satellite transmitter module used is a Vitel VX1004 which is commercially modified for use with the CE 318 A (The Vitel VX1004/2 is used by the PHOTON group but it is no longer in production). The antenna is conical approximately 40 cm in diameter and 40 cm long. The transmitter system is battery operated and charged by a 10 watt solar panel.

Internet

Data may be downloaded automatically from the Cimel sun photometer and stored on the local computer. This computer can run software to automatically transfer K7 files to the AERONET processing system through the Internet. Alternatively, users may download K7 files manually from the instruments using a PC or laptop and manually submit these files to the processing system.


 
  + Privacy Policy and Important Notices NASA Curator: David M. Giles
NASA Official: Brent N. Holben
Last Updated: December 04, 2007