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Projects > S - U > TOVS Pathfinder

Preferred term

TOVS Pathfinder  

Definition

  • The TIROS Operational Vertical Sounder (TOVS) Pathfinder Path A dataset contains atmospheric profiles (primarily temperature and humidity) and surface and cloud parameters derived using one of three conceptually distinct algorithms identified by the TOVS Science Working Group (SWG) in November 1991. The purpose of the Pathfinder Project is to make research-quality global change data sets easily available to the science community in support of the US Global Change Research Program (USGCRP) using long term space-based radiance measurements. The initial set of level 3 geophysical products have been derived for the Pathfinder benchmark period from April 1987 through November 1988. Investigator: Joel Susskind, Satellite Data Utilization Office Code 910.4 NASA/Goddard Space Flight Center Greenbelt, Md. 20771 301-286-7210 joel.susskind&#64gsfc.nasa.gov The basic methodology used to retrieve geophysical parameters from the TOVS observations involves use of an interactive forecast-retrieval-analysis scheme in which the first guess information for the retrievals (surface pressure, temperature profile, and moisture profile) comes from a 6 hour forecast generated by a general circulation model. This information, together with the observed radiances, is used to generate retrievals for the 6 hour period centered on the forecast time. An analysis is then performed using these retrievals and all available in situ data for that time period. This is then used as input to the forecast model and the cycle is repeated for the next 6 hour period. For more information, link to "http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/atmospheric_dynamics/ TOVS_A_or_B.html#pa" [Summary provided by NASA] (en)

Broader concept

Entry terms

  • TOVS PATHFINDER (en)

Change note

  • 2017-10-10 14:36:37.0 [sritz] update PrefLabel (TOVS Pathfinder);
  • 2017-10-10 15:19:01.0 [sritz] insert AltLabel (id: null category: null text: TOVS PATHFINDER language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/31b6a610-6119-4a12-b33d-1d38301f54cb

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