TOVS Pathfinder Path-P Daily and Monthly Polar Gridded Atmospheric Parameters
Entry ID: NSIDC-0027

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Abstract: The TIROS-N Operational Vertical Sounder (TOVS) Polar Pathfinder (Path-P) data set consists of gridded daily and monthly Arctic and Antarctic atmospheric data derived from various NOAA satellites. TOVS Path-P daily files are available for the Northern and Southern Hemispheres from 60° poleward at 100 km gridded spatial resolution in an Equal-Area Scalable Earth Grid (EASE-Grid). TOVS Path-P ... View entire text
Geographic Coverage
Spatial coordinates   
  N: -60.0   S: -90.0   E: 180.0   W: -180.0
  N: 90.0   S: 60.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: J. A. Francis and A. J. Schweiger
Dataset Title: TOVS Pathfinder Path-P Daily and Monthly Polar Gridded Atmospheric Parameters
Dataset Release Date: 1999-09-01, updated 2008
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Online Resource:
Temporal Coverage
Start Date: 1979-01-01

Start Date: 1979-07-12
Data Resolution
Latitude Resolution: 100 km
Longitude Resolution: 100 km
Horizontal Resolution Range: 100 km - < 250 km or approximately 1 degree - < 2.5 degrees
Temporal Resolution: Daily, Monthly
Temporal Resolution Range: Daily - < Weekly
Quality The algorithm used to generate these grids has been validated directly through comparisons with surface observations from the CEAREX experiment and with radiosonde data from Soviet ice stations. Comparisons with other TOVS retrieval algorithms provided further validation. Additionally, Schweiger et al. (1999) found a strong correlation between the TOVS Path-P data and surface cloud observations obtained from the North Polar drifting meteorological stations, which indicates that the TOVS data effectively represent annual cloud cover.
Access Constraints Users are strongly encouraged to register before accessing data. Registered users automatically receive release notes via e-mail containing notification of data manipulation or formatting modifications.
Data Set Progress
Data Center
NSIDC Distributed Active Archive Center Supplemental Info
Data Center URL:
Dataset ID: NSIDC-0027

Data Center Personnel
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
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Distribution Media: FTP
Distribution Size: 506,437 to 778,864 KB uncompressed
Distribution Format: HDF
Fees: None
Phone: 732 688 2382
Email: francis at
Contact Address:
Institute of Marine and Coastal Sciences
Rutgers University
City: New Brunswick
Province or State: New Jersey
Country: USA
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Brodzik, M.J. 1998. The EASE-Grid, A Versatile Set of Equal-Area Projections and Grids. Special report to the National Snow and Ice Data Center, Boulder, CO. Chedin, A., N. A. Scott, C. Wahiche and P. Moulinier. 1985. The Improved Initialization Inversion Method: A high resolution physical method for temperature retrievals from satellites of the TIROS-N series. Journal of Climate and Applied ... View entire text
Creation and Review Dates
DIF Creation Date: 1999-09-01
Last DIF Revision Date: 2011-06-30
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