NOAA/NASA Pathfinder Program

Project Description
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