[Keyword='climate change']
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TOVS GLA MONTHLY GRIDS from NOAA-11 V001 (TOVSAMNH) at GES DISC Entry ID: GES_DISC_TOVSAMNH_V001 |
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Summary
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Abstract:
This dataset contains the TIROS Operational Vertical Sounder (TOVS) level 3 geophysical parameters derived using 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. |
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Geographic Coverage
| N: 90.0 | S: -90.0 | E: 180.0 | W: -180.0 |
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Data Set Citation
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Dataset Originator/Creator:
Goddard Laboratory for Atmospheres at NASA/GSFC
Dataset Title: GLA MONTHLY GRIDS from NOAA-11 Version: 1 |
Temporal Coverage
| Start Date: 1988-10-31 |
| Stop Date: 1994-07-01 |
Location Keywords
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GEOGRAPHIC REGION
> GLOBAL
VERTICAL LOCATION > BOUNDARY LAYER VERTICAL LOCATION > SEA SURFACE VERTICAL LOCATION > STRATOSPHERE VERTICAL LOCATION > TROPOSPHERE |
Data Resolution
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Latitude Resolution:
1 Degree
Longitude Resolution: 1 Degree Temporal Resolution: Monthly |
Science Keywords
| ATMOSPHERE >ATMOSPHERIC PRESSURE >ATMOSPHERIC PRESSURE MEASUREMENTS [Definition] |
| ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE [Definition] |
| ATMOSPHERE >ATMOSPHERIC WATER VAPOR >HUMIDITY [Definition] |
| ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR >HUMIDITY [Definition] |
| ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD FREQUENCY [Definition] |
| ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD HEIGHT [Definition] |
| ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT [Definition] |
| ATMOSPHERE >ATMOSPHERIC RADIATION >OUTGOING LONGWAVE RADIATION [Definition] |
| LAND SURFACE >LAND TEMPERATURE >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] |
| ATMOSPHERE >ATMOSPHERIC CHEMISTRY >OXYGEN COMPOUNDS >OZONE [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ELEVATION |
Platform
| NOAA-10 >National Oceanic & Atmospheric Administration-10 [Information] |
Instrument
| HIRS/2 >High Resolution Infrared Radiation Sounder/2 [Information] |
| SOUNDERS [Information] |
| TOVS >TIROS Operational Vertical Sounder [Information] |
| MSU >Microwave Sounding Unit [Information] |
Project
| EOSDIS >Earth Observing System Data Information System [Information] |
| ESIP >Earth Science Information Partners Program [Information] |
| 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 |
Originating Center
| GSFC_DAAC |
Data Center
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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: http://disc.gsfc.nasa.gov/ Dataset ID: TOVS Pathfinder 5 Day Path A Grids
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Personnel
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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 |
Publications/References
Chahine, M. T., 1968, "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, "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, "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, "Retrieval of Sea-Surface Temperatures
from HIRS2/MSU", J. Geophys. Res., 90C, 11602-11608.
Susskind, J., D. Reuter, and M. T. Chahine, 1987, "Cloud Fields Derived
from Analysis of HIRS2/MSU Sounding Data", J. Geophys. Res., 92D, 4035-4050.
Takacs, L., A. Molod, and T. Wang, 1994, "Documentation of the Goddard Earth
Observing System (GEOS) General Circulation Model Version 1", NASA Technical
Memorandum 104606, April 1994.
Wu, M. L. C. and J. Susskind, 1990, "Outgoing Longwave Radiation Computed
from HIRS2/MSU Soundings", J. Geophys. Res. 95D, 7579-7602.
Atmosphere from its Outgoing Radiances", J. Opt. Soc. Am., 58, 1634-1637.
Reuter, D., J. Susskind, and A. Pursch, 1988, "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, "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, "Retrieval of Sea-Surface Temperatures
from HIRS2/MSU", J. Geophys. Res., 90C, 11602-11608.
Susskind, J., D. Reuter, and M. T. Chahine, 1987, "Cloud Fields Derived
from Analysis of HIRS2/MSU Sounding Data", J. Geophys. Res., 92D, 4035-4050.
Takacs, L., A. Molod, and T. Wang, 1994, "Documentation of the Goddard Earth
Observing System (GEOS) General Circulation Model Version 1", NASA Technical
Memorandum 104606, April 1994.
Wu, M. L. C. and J. Susskind, 1990, "Outgoing Longwave Radiation Computed
from HIRS2/MSU Soundings", J. Geophys. Res. 95D, 7579-7602.
Creation and Review Dates
DIF Creation Date:
2009-03-13
Last DIF Revision Date:
2011-05-17
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