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TOVS GLA MONTHLY GRIDS from NOAA-10 V01 (TOVSAMNG) at GES DISC
Entry ID: TOVSAMNG_01


Summary
Abstract: This dataset (TOVSAMNG) contains the TIROS Operational Vertical Sounder (TOVS) level 3 geophysical parameters derived using data from NOAA-10 and the physical retrieval method of Susskind et al. (1984) and processed by the Satellite Data Utilization Office of the Goddard Laboratory for Atmospheres at NASA/GSFC. This method, which is hydrodynamic model- and a priori data-dependent, is designated as the so-called Path A scheme by the TOVS Pathfinder Science Working Group. The 20 channel High resolution Infrared Radiation Sounder 2 (HIRS2) and the 4 channel Microwave Sounding Unit (MSU) aboard the NOAA-xx series of Polar Orbiting Satellites are used to produce global fields of the 3-dimensional temperature-moisture structure of the atmosphere. In addition to profiles of temperature and moisture, the HIRS2/MSU data are used to derive important quantities such as land and sea surface temperature, outgoing longwave radiation, cloud fraction, cloudtop height, total ozone overburden and precipitation estimates.

The Path A system steps through an interactive forecast-retrieval-analysis cycle. In each 6 hour synoptic period, a 2nd order General Circulation Model (Takacs et al., 1994) is used to generate the 6 hour forecast fields of temperature and humidity. These global fields are used as the first guess for all soundings occuring within a 6 hour time window centered upon the forecast time. These retrievals are then assimilated with all available insitu measurements (such as radiosonde and ship reports) in the 6 hour interval using an Optimal Interpolation (OI) analysis scheme developed by the Data Assimilation Office of the Goddard Laboratory for Atmospheres. This analysis is then used to specify the initial conditions for the next 6 hour forecast, thus completing the cycle.

The retrieval algorithm itself is a physical method based on the iterative relaxation technique originally proposed by Chahine (1968). The basic approach consists of modifying the temperature profile from the previous iteration by an amount proportional to the difference between the observed brightness temperatures and the brightness temperatures computed from the trial parameters using the full radiative transfer equation applied at the observed satellite zenith angle. For the case of the temperature profile, the updated layer mean temperatures are given as a linear combination of multichannel brightness temperature differences with the coefficients given by the channel weighting functions. Constraints are imposed upon the solution in order to ensure stability and convergence of the iterative process. For more details see Susskind et al (1984).

There are 6 level 3 data product files, each of which is in the HDF format and each representative of a different averaging time period. All files contain the same number of geophysical parameter arrays stored as HDF Scientific Data Sets (SDSs). The time periods include daily, 5 day (pentad) and monthly, with the AM and PM portions of the orbits treated separately. All data are mapped to a 1 degree longitude by 1 degree latitude global grid.

Related URL
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Description: TOVSAMNG image


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Description: This document is TOVS legacy documentation. Some information may be obsolete.


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Description: Access the data via HTTP.


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Description: Use the Earthdata Search to find and retrieve data sets across multiple data centers.


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Description: README Document


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Description: This document is a TOVS legacy data guide. Some information may be obsolete.

Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Creator: Goddard Laboratory for Atmospheres at NASA GSFC
Dataset Title: TOVS GLA MONTHLY GRIDS from NOAA-10 V01
Dataset Series Name: TOVSAMNG
Dataset Release Date: 1995-01-01T00:00:00.000Z
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
Version: 01
Data Presentation Form: Digital Science Data
Online Resource: https://disc.gsfc.nasa.gov/datacollection/TOVSAMNG_01.html


Temporal Coverage
Start Date: 1986-11-30
Stop Date: 1991-09-01


Location Keywords
VERTICAL LOCATION > BOUNDARY LAYER
GEOGRAPHIC REGION > GLOBAL
VERTICAL LOCATION > SEA SURFACE
VERTICAL LOCATION > STRATOSPHERE
VERTICAL LOCATION > TROPOSPHERE


Science Keywords
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >OXYGEN COMPOUNDS >OZONE    [Definition]
ATMOSPHERE >ATMOSPHERIC PRESSURE >ATMOSPHERIC PRESSURE MEASUREMENTS    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >OUTGOING LONGWAVE RADIATION    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >SURFACE TEMPERATURE >AIR TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR INDICATORS >HUMIDITY    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD FREQUENCY    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD HEIGHT    [Definition]
ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT    [Definition]
LAND SURFACE >SURFACE THERMAL PROPERTIES >LAND SURFACE TEMPERATURE    [Definition]
OCEANS >OCEAN PRESSURE >SEA LEVEL PRESSURE    [Definition]
OCEANS >OCEAN TEMPERATURE >SEA SURFACE TEMPERATURE    [Definition]
OCEANS >SEA SURFACE TOPOGRAPHY >SEA SURFACE HEIGHT    [Definition]
SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS >INFRARED IMAGERY    [Definition]
SPECTRAL/ENGINEERING >MICROWAVE >BRIGHTNESS TEMPERATURE    [Definition]
SPECTRAL/ENGINEERING >MICROWAVE >MICROWAVE IMAGERY    [Definition]


Platform
NOAA-10 >National Oceanic & Atmospheric Administration-10    [Information]


Instrument
HIRS/2 >High Resolution Infrared Radiation Sounder/2    [Information]
MSU >Microwave Sounding Unit    [Information]
TOVS >TIROS Operational Vertical Sounder    [Information]


Project
TOVS Pathfinder >TOVS Path A    [Information]
CWIC >CEOS WGISS Integrated Catalog    [Information]


Keywords
MONTHLY
CLIMATE CHANGE
CLOUD FRACTION
EOSDIS
GRID DATA
GROUND TEMPERATURE
HYDROLOGIC CYCLE
RADIATION
RADIATION BUDGET
SEA LEVEL PRESSURE
SEA SURFACE TEMPERATURE
SST
SURFACE PRESSURE
UPPER AIR
UPWARD RADIATION


Data Set Progress
COMPLETE


Data Center
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA    [Information]
Data Center URL: https://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA



Distribution
Distribution_Media: Online Archive
Distribution_Size: 9.0 MB
Distribution_Format: HDF


Personnel
JOEL SUSSKIND
Role: TECHNICAL CONTACT
Phone: 301-286-7210
Fax: 301-286-2323
Email: joel.susskind-1 at nasa.gov
Contact Address:
Goddard Space Flight Center
Mailstop 613.0
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


THOMAS HEARTY
Role: METADATA AUTHOR
Phone: 301-614-6513
Email: Thomas.J.Hearty at nasa.gov
Contact Address:
Distributed Active Archive Center Global Change Data Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
Chahine, M. T. (1968-01-01T00:00:00.000Z), Determination of the Temperature Profile in an atmosphere from its Outgoing Radiances, J. Opt. Soc. Am., 58, 1634-1637

Reuter, D., J. Susskind, and A. Pursch (1988-01-01T00:00:00.000Z), First Guess Dependence of a Physically Based Set of Temperature Humidity Retrievals from HIRS2/MSU Data, J. Atm. Ocean. Tech., 5, 70-83

Susskind, J., J. Rosenfield, D. Reuter, and M. T. Chahine (1984-01-01T00:00:00.000Z), Remote Sensing of Weather and Climate Parameters from HIRS2/MSU on TIROS-N, J. Geophys. Res., 89D, 4677-4697

Susskind J. and D. Reuter (1985-01-01T00:00:00.000Z), Retrieval of Sea-Surface Temperatures from HIRS2/MSU, J. Geophys. Res., 90C, 11602-11608

Susskind, J., D. Reuter, and M. T. Chahine (1987-01-01T00:00:00.000Z), Cloud Fields Derived from Analysis of HIRS2/MSU Sounding Data, J. Geophys. Res., 92D, 4035-4050

Takacs, L., A. Molod, and T. Wang (1994-01-01T00:00:00.000Z), Documentation of the Goddard Earth Observing System (GEOS) General Circulation Model Version 1, NASA Technical Memorandum, 104606

Wu, M. L. C. and J. Susskind (1990-01-01T00:00:00.000Z), Outgoing Longwave Radiation Computed from HIRS2/MSU Sounding, J. Geophys. Res., 95D, 7579-7602
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2009-03-13
Last DIF Revision Date: 2019-01-25



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