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The NOAA/NASA Pathfinder Program was initiated in 1990 in response to a need for improved, long time series data sets for global change research. Candidate data sets were identified based on available coverage and importance of the data in global change research. All Pathfinder data sets involve space-based observations. Pathfinder activities include reprocessing of these data using community-consensus algorithms as recommended by designated Science Working Groups (SWGs). The data sets will be made available through the Distributed Active Archive Centers (DAACs) of the Earth Observing System Data Information System (EOSDIS). Four data sets were identified for the initial Pathfinder processing effort: - The Advanved Very High Resolution Radiometer (AVHRR) data from NOAA/TIROS polar orbiting satellites. - The TIROS Operation Vertical Sounder (TOVS) data from NOAA/TIROS polar orbiting satellites. - Data from the Geostationary Operational Environmental Satellite (GOES) - The Special Sensor Microwave/Imager (SSM/I) from the Defense Meteorological Satelitte Program (DMSP). NASA, through the Mission to Planet Earth (MtPE) Program, initiated the following Pathfinders: - The Scanning Multichannel Microwave Radiometer (SMMR) from the Nimbus-7 satellite - Selected time periods of Landsat data from land cover classification and change detection of several periods and regions. AVHRR PATHFINDER ---------------- AVHRR Pathfinder products consist of global vegetation and radiance data over land, global sea surface temperatures, and global clouds, radiation, and aerosols. Data are produced from Global Area Coverage (GAC) observations from the AVHRR onboard NOAA-7, NOAA-9, and NOAA-11 from mid-1981 through 1992. AVHRR Land Pathfinder data is available from the Goddard DAAC User Services Office: Phone: 301-286-3209 FAX: 301-286-1775 Email: daacuso@eosdata.gsfc.nasa.gov Goddard DAAC User Services Office Code 902.2 Global Change Data Center NASA Goddard Space Flight Center Greenbelt, MD 20771 See also the AVHRR Pathfinder Home Page at "http://daac.gsfc.nasa.gov/" AVHRR Ocean Pathfinder data is available from the JPL Physical Oceanography (PO-DAAC) Home Page on the WWW: "http://podaac.jpl.nasa.gov/sst/" JPL PO.DAAC Jet Propulsion Laboratory MS 300-320 4800 Oak Grove Dr. Pasadena, CA 91109 Phone: 818-354-9890 FAX: 818-393-2718 Email: podaac@podaac.jpl.nasa.gov GOES PATHFINDER --------------- The GOES Pathfinder data sets consists of data products from the VISSR Atmospheric Sounder (VAS) in both visible and infrared from the GOES-7 spacecraft. GOES Pathfinder data are available at: "http://www.ssec.wisc.edu/" Space Science and Engineering Center University of Wisconsin-Madison Madison, WI 53706 goesprods@ssec.wisc.edu SSM/I PATHFINDER ---------------- SSM/I Pathfinder data products are available from the Marshall Space Flight Center Distributed Active Archive Center (DAAC). Products (data and images) include: Antenna Temperatures Precipitation Rate Liquid Water Over Oceans Water Vapor Over Ocean Land Surface Classification Land Surface Temperature SSM/I products can be obtained from the MSFC DAAC WWW Home Page at: "http://ghrc.msfc.nasa.gov/" MSFC DAAC - User Services Office 977 Explorer Blvd. Huntsville, AL 35806 Phone: 205-922-5932 FAX: 205-922-5723 Email: msfc@eos.nasa.gov SSM/I Pathfinder Products for Sea Ice Concentrations will be available from the National Snow and Ice Data Center (NSIDC) DAAC. User Services NSIDC/WDC CIRES Campus Box 449 University of Colorado Boulder, CO 80309-0449 Phone: 303-492-6199 Fax: 303-492-2468 Email: nsidc@kryos.colorado.edu "http://www-nsidc.colorado.edu/NASA/GUIDE/" SSM/I Pathfinder products for Water Vapor and Wind Speed are available from the Jet Propulsion Laboratory (JPL) Physical Oceanography DAAC (PO-DAAC). "http://podaac-www.jpl.nasa.gov/" JPL PO.DAAC Jet Propulsion Laboratory MS 300-320 4800 Oak Grove Dr. Pasadena, CA 91109 Phone: 818-354-9890 FAX: 818-393-2718 Email: podaac@podaac.jpl.nasa.gov TOVS PATHFINDER --------------- The TOVS Pathfinder Path C1 products are avilable from the Marshall Space Flight Center Distributed Active Archive Center (DAAC). These products consist of daily 2.5 degree gridded layer temperatures and oceanic rainfall derived from the Microwave Sounding Unit (MSU) instrument (part of the TOVS instrument) on the NOAA polar orbiters. SSM/I products can be obtained from the MSFC DAAC WWW Home Page at: "http://ghrc.msfc.nasa.gov/" MSFC DAAC - User Services Office 977 Explorer Blvd. Huntsville, AL 35806 Phone: 205-922-5932 FAX: 205-922-5723 Email: msfc@eos.nasa.gov LANDSAT PATHFINDER ------------------ The Landsat Land Cover Pathfinder effort is to establish long-term, medium- to high-resolution data sets for regional and global applications to global change research. The North American Landscape Characterization (NALC) project is a component of the NASA Landsat Pathfinder program, and is a cooperative effort between the Environmental Protection Agency (EPA), NASA, and the USGS. The data are available from the EROS Land Processes DAAC. Home Page: "http://edcwww.cr.usgs.gov/landdaac/landdaac.html" EDC DAAC User Services U.S. Geological Survey EROS Data Center Sioux Falls, SD 57198 Phone: 605-594-6116 FAX: 605-594-6589 Email: edc@eos.nasa.gov PATHFINDER SAMPLER ------------------ Pathfinder Sampler Data sets for the vernal equinox 1988 are available via ftp and from the WWW: "http://pathfinder.arc.nasa.gov" These products include: - AVHRR Land products and TOVS Path A and TOVS Path B products from the NASA GSFC DAAC - ISSCP, Shortwave and Longwave Radiation products from NASA LaRC - AVHRR Ocean Products from the JPL PO-DAAC - SSM/I Pathfinder products and TOVS Path C1 products from NASA MSFC DAAC - SSM/I gridded sea ice products from NSIDC DAAC - GOES Pathfinder products from SSEC, University of Wisconsin-Madison - TOVS Path P products from the University of Washington
NOAA/NASA PATHFINDER