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SRB Data and Information |
The NASA/GEWEX Surface Radiation Budget (SRB) Release-3.0 data sets contains global 3-hourly, daily, monthly/3-hourly, and monthly averages of surface and top-of atmosphere (TOA) longwave and shortwave radiative parameters on a 1°x1° grid. Model inputs of cloud amounts and other atmospheric state parameters are also available in some of the data sets. Primary inputs to the models include: visible and infrared radiances from International Satellite Cloud Climatology Project (ISCCP) pixel-level (DX) data, cloud and surface properties derived from those data, temperature and moisture profiles from GEOS-4 reanalysis product obtained from the NASA Global Modeling and Assimilation Office (GMAO), and column ozone amounts constituted from Total Ozone Mapping Spectrometer (TOMS), TIROS Operational Vertical Sounder (TOVS) archives, and Stratospheric Monitoring-group's Ozone Blended Analysis (SMOBA), an assimilation product from NOAA's Climate Prediction Center. SRB products are reformatted for the use of renewable energy and agricultural communities and made available through the Surface meteorology and Solar Energy (SSE) website. SRB products now overlap a portion of surface and TOA flux data sets that are available from Clouds and the Earth's Radiant Energy System (CERES) project. These CERES data products and those from the CERES Fast Longwave and SHortwave Radiative Fluxes (FLASHFlux) project extend past the SRB time frame. The latter project provides radiative fluxes on a near real-time basis. The CERES and CERES/FLASHFlux data sets also make use of global observations from Moderate-resolution Imaging SpectroRadiometer (MODIS) instruments.
Release-3.0 products differ substantially from earlier SRB Releases (2.0 and 2.5) arising from numerous improvements of the algorithms and input data sets. Temporal coverage of Release-3.0 is extended to December 2007; Release-2.5 ended in June 2005. On-line documentation provides information on all changes applicable to Release-3.0. Users are encouraged to consult on-line documentation prior to using these data sets. In addition to the big-endian binary formatted files of previous releases, Release-3.0 is now available in netCDF format.
| Notices | The NASA/GEWEX (Global Energy and Water Cycle Experiment) Surface Radiation Budget project team released a modified version of the GEWEX Longwave data set. Denoted as version 3.1, this version corrects for a numerical instability issue that was found to affect a small number of 3 hourly grid box TOA outgoing and surface downward fluxes. The approximate number of grid boxes affected ranged from 7-12 (out of 8 hours x 30 days x 44016 total grid boxes) per month. The 3-hourly values in those instances were significantly in error but had little effect on daily, 3-hourly monthly and monthly averaged values. Users analyzing 3 hourly fields are advised to obtain the new data set. Please contact us for more specific questions. |
| Ordering Data | Related Links | ||
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Available data products: 3 Hourly Averages | Daily Averages | Monthly Averages | 3 Hourly Monthly Averages
For convenience in ordering a specific data product, select the appropriate data set name in the data table below.
| 3 Hourly Averages | ||||
|---|---|---|---|---|
| Data Set Name (Select to Order) |
Sample Software | Parameter(s) | Temporal Coverage | |
| LW | SRB_REL3.1_LW_3HRLY (binary) | Readme_3.1_lw_3hrly | Fortran_3.1_lw_3hrly | Day/night flag, Outgoing Longwave Radiation, All-sky Surface Downward Flux, All-sky Surface Upward Flux, Clear-sky Top of Atmosphere Upward Flux, Clear-sky Surface Downward Flux, Clear-sky Surface Upward Flux | 07/01/1983 - 12/31/2007 |
| SRB_REL3.1_LW_3HRLY_NC (netCDF) | Readme_3.1_lw_3hrly_nc | Fortran_3.1_lw_3hrly_nc | |||
| SRB_REL3.0_QCLW_3HRLY (binary) | Readme_3.0_qclw_3hrly | Fortran_3.0_qclw_3hrly | Surface Downward Longwave Flux, Surface Net Longwave Flux, Surface Longwave Cloud Radiative Forcing | 07/01/1983 - 12/31/2007 |
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| SRB_REL3.0_QCLW_3HRLY_NC (netCDF) | Readme_3.0_qclw_3hrly_nc | Fortran_3.0_qclw_3hrly_nc | |||
| SRB_REL3.1_G4TskinOnly_LW_3HRLY (binary) | Readme_3.1_g4tskinonly_lw_3hrly | Fortran_3.1_g4tskinonly_lw_3hrly | Day/night flag, Outgoing Longwave Radiation, All-sky Surface Downward Flux, All-sky Surface Upward Flux, Clear-sky Top of Atmosphere Upward Flux, Clear-sky Surface Downward Flux, Clear-sky Surface Upward Flux | 01/01/1998 - 12/31/2007 |
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| SW | SRB_REL3.0_SW_3HRLY (binary) | Readme_3.0_sw_3hrly | Fortran_3.0_sw_3hrly | All-sky Top of Atmosphere Downward Shortwave Flux, All-sky Top of Atmosphere Upward Shortwave Flux, All-sky Surface Downward Shortwave Flux, All-sky Surface Upward Shortwave Flux, Clear-sky Top of Atmosphere Upward Shortwave Flux, Clear-sky Surface Downward Shortwave Flux, Clear-sky Surface Upward Shortwave Flux, All-sky Global Photosynthetically Active Radiation Flux, Cloud Fraction, Cosine Solar Zenith Angle From Satellite, Cosine Solar Zenith Angle From Astronomy | 07/01/1983 - 12/31/2007 |
| SRB_REL3.0_SW_3HRLY_NC (netCDF) | Readme_3.0_sw_3hrly_nc | Fortran_3.0_sw_3hrly_nc | |||
| SRB_REL3.0_CLDPROPS_3HRLY (binary) | Readme_3.0_lw_cldprops_3hrly | Fortran_3.0_lw_cldprops_3hrly | Cloud Base Pressure, Cloud Effective Radius, Cloud Fraction, Cloud Optical Depth, Cloud Top Pressure, Cloud Top Temperature, Cloud Water Content, Day/Night Flag, Snow/Ice Fraction, Surface Skin Temperature, Total Column Precipitable Water | 07/01/1983 - 12/31/2007 |
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| Daily Averages | ||||
| Data Set Name (Select to Order) |
Sample Software | Parameter(s) | Temporal Coverage | |
| LW | SRB_REL3.1_LW_DAILY (binary) | Readme_3.1_lw_daily | Fortran_3.1_lw_daily | Outgoing Longwave Radiation, All-sky Surface Downward Flux, All-sky Surface Upward Flux, Clear-sky Top of Atmosphere Upward Flux, Clear-sky Surface Downward Flux, Clear-sky Surface Upward Flux | 07/01/1983 - 12/31/2007 |
| SRB_REL3.1_LW_DAILY_NC (netCDF) | Readme_3.1_lw_daily_nc | Fortran_3.1_lw_daily_nc | |||
| SRB_REL3.0_QCLW_DAILY (binary) | Readme_3.0_qclw_daily | Fortran_3.0_qclw_daily | Surface Downward Longwave Flux, Surface Net Longwave Flux, Surface Longwave Cloud Radiative Forcing | 07/01/1983 - 12/31/2007 |
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| SRB_REL3.0_QCLW_DAILY_NC (netCDF) | Readme_3.0_qclw_daily_nc | Fortran_3.0_qclw_daily_nc | |||
| SRB_REL3.1_G4TskinOnly_LW_DAILY (binary) | Readme_3.1_g4tskinonly_lw_daily | Fortran_3.1_g4tskinonly_lw_daily | Outgoing Longwave Radiation, All-sky Surface Downward Flux, All-sky Surface Upward Flux, Clear-sky Top of Atmosphere Upward Flux, Clear-sky Surface Downward Flux, Clear-sky Surface Upward Flux | 01/01/1998 - 12/31/2007 |
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| SW |
SRB_REL3.0_SW_DAILY_LOCAL (binary) SRB_REL3.0_SW_DAILY_UTC (binary) |
Readme_3.0_sw_daily | Fortran_3.0_sw_daily | All-sky Top of Atmosphere Downward Shortwave Flux, All-sky Top of Atmosphere Upward Shortwave Flux, All-sky Surface Downward Shortwave Flux, All-sky Surface Upward Shortwave Flux, Clear-sky Top of Atmosphere Upward Shortwave Flux, Clear-sky Surface Downward Shortwave Flux, Clear-sky Surface Upward Shortwave Flux, All-sky Global Photosynthetically Active Radiation Flux, Cloud Fraction, Cosine Solar Zenith Angle From Satellite, Cosine Solar Zenith Angle From Astronomy | 07/01/1983 - 12/31/2007 |
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SRB_REL3.0_SW_DAILY_LOCAL_NC (netCDF) SRB_REL3.0_SW_DAILY_UTC_NC (netCDF) |
Readme_3.0_sw_daily_nc | Fortran_3.0_sw_daily_nc | |||
| SRB_REL3.0_QCSW_DAILY (binary) | Readme_3.0_qcsw_daily | Fortran_3.0_qcsw_daily | Top-of-atmosphere (TOA) Insolation, Pristine-sky Surface Insolation, Clear-sky Surface Insolation, All-sky Surface Insolation, Surface Absorbed SW Flux, All-sky Surface Albedo | 07/01/1983 - 12/31/2007 |
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| SRB_REL3.0_QCSW_DAILY_NC (netCDF) | Readme_3.0_qcsw_daily_nc | Fortran_3.0_qcsw_daily_nc | |||
| Monthly Averages | ||||
| Data Set Name (Select to Order) |
DocumentsSample Read Software | Parameter(s) | Temporal Coverage | |
| LW | SRB_REL3.1_LW_MONTHLY (binary) | Readme_3.1_lw_monthly | Fortran_3.1_lw_monthly | Outgoing Longwave Radiation, All-sky Surface Downward Flux, All-sky Surface Upward Flux, Clear-sky Top of Atmosphere Upward Flux, Clear-sky Surface Downward Flux, Clear-sky Surface Upward Flux | 07/01/1983 - 12/31/2007 |
| SRB_REL3.1_LW_MONTHLY_NC (netCDF) | Readme_3.1_lw_monthly_nc | Fortran_31_lw_monthly_nc | |||
| SRB_REL3.0_QCLW_MONTHLY (binary) | Readme_3.0_qclw_monthly | Fortran_3.0_qclw_monthly | Surface Downward Longwave Flux, Surface Net Longwave Flux, Surface Longwave Cloud Radiative Forcing, Surface Skin Temperature, Column Precipitable Water Vapor, Total Cloud Amount | 07/01/1983 - 12/31/2007 |
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| SRB_REL3.0_QCLW_MONTHLY_NC (netCDF) | Readme_3.0_qclw_monthly_nc | Fortran_3.0_qclw_monthly_nc | |||
| SRB_REL3.1_G4TskinOnly_LW_MONTHLY (binary) | Readme_3.1_g4tskinonly_lw_monthly | Fortran_3.1_g4tskinonly_lw_monthly | Outgoing Longwave Radiation, All-sky Surface Downward Flux, All-sky Surface Upward Flux, Clear-sky Top of Atmosphere Upward Flux, Clear-sky Surface Downward Flux, Clear-sky Surface Upward Flux | 01/01/1998 - 12/31/2007 |
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| SW |
SRB_REL3.0_SW_MONTHLY_LOCAL (binary) SRB_REL3.0_SW_MONTHLY_UTC (binary) |
Readme_3_sw_monthly | Fortran_3_sw_monthly | All-sky Top of Atmosphere Downward Shortwave Flux, All-sky Top of Atmosphere Upward Shortwave Flux, All-sky Surface Downward Shortwave Flux, All-sky Surface Upward Shortwave Flux, Clear-sky Top of Atmosphere Upward Shortwave Flux, Clear-sky Surface Downward Shortwave Flux, Clear-sky Surface Upward Shortwave Flux, All-sky Global Photosynthetically Active Radiation Flux, Cloud Fraction, Cosine Solar Zenith Angle From Satellite, Cosine Solar Zenith Angle From Astronomy | 07/01/1983 - 12/31/2007 |
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SRB_REL3.0_SW_MONTHLY_LOCAL_NC (netCDF) SRB_REL3.0_SW_MONTHLY_UTC_NC (netCDF) |
Readme_3_sw_monthly_nc | Fortran_3_sw_monthly_nc | |||
| SRB_REL3.0_QCSW_MONTHLY (binary) | Readme_3.0_qcsw_monthly | Fortran_3.0_qcsw_monthly | Top-of-atmosphere (TOA) Insolation, Pristine-sky Surface Insolation, Clear-sky Surface Insolation, All-sky Surface Insolation, Surface Absorbed SW Flux, All-sky Surface Albedo | 07/01/1983 - 12/31/2007 |
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| SRB_REL3.0_QCSW_MONTHLY_NC (netCDF) | Readme_3.0_qcsw_monthly_nc | Fortran_3.0_qcsw_monthly_nc | |||
| 3 Hourly Monthly Averages | ||||
| Data Set Name (Select to Order) |
Sample Software | Parameter(s) | Temporal Coverage | |
| LW | SRB_REL3.1_LW_3HRLY_MONTHLY (binary) | Readme_3.1_lw_3hrly_monthly | Fortran_3.1_lw_3hrly_monthly | Outgoing Longwave Radiation, All-sky Surface Downward Flux, All-sky Surface Upward Flux, Clear-sky Top of Atmosphere Upward Flux, Clear-sky Surface Downward Flux, Clear-sky Surface Upward Flux | 07/01/1983 - 12/31/2007 |
| SRB_REL3.1_LW_3HRLY_MONTHLY_NC (netCDF) | Readme_3.1_lw_3hrly_monthly_nc | Fortran_3.1_lw_3hrly_monthly_nc | |||
| SRB_REL3.0_QCLW_3HRLY_MONTHLY (binary) | Readme_3.0_qclw_3hrly_monthly | Fortran_3.0_qclw_3hrly_monthly | Surface Downward Longwave Flux, Surface Net Longwave Flux, Surface Longwave Cloud Radiative Forcing | 07/01/1983 - 12/31/2007 |
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| SRB_REL3.0_QCLW_3HRLY_MONTHLY_NC (netCDF) | Readme_3.0_qclw_3hrly_monthly_nc | Fortran_3.0_qclw_3hrly_monthly_nc | |||
| SRB_REL3.1_G4TskinOnly_LW_3HRLY_MONTHLY (binary) | Readme_3.1_g4tskinonly_lw_3hrly_monthly | Fortran_3.1_g4tskinonly_lw_3hrly_monthly | Outgoing Longwave Radiation, All-sky Surface Downward Flux, All-sky Surface Upward Flux, Clear-sky Top of Atmosphere Upward Flux, Clear-sky Surface Downward Flux, Clear-sky Surface Upward Flux | 01/01/1998 - 12/31/2007 |
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| SW | SRB_REL3.0_SW_3HRLY_MONTHLY (binary) | Readme_3_sw_3hrly_monthly | Fortran_3_sw_3hrly_monthly | All-sky Top of Atmosphere Downward Shortwave Flux, All-sky Top of Atmosphere Upward Shortwave Flux, All-sky Surface Downward Shortwave Flux, All-sky Surface Upward Shortwave Flux, Clear-sky Top of Atmosphere Upward Shortwave Flux, Clear-sky Surface Downward Shortwave Flux, Clear-sky Surface Upward Shortwave Flux, All-sky Global Photosynthetically Active Radiation Flux, Cloud Fraction, Cosine Solar Zenith Angle From Satellite, Cosine Solar Zenith Angle From Astronomy | 07/01/1983 - 12/31/2007 |
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SRB_REL3.0_SW_3HRLY_MONTHLY_LOCAL_NC (netCDF) SRB_REL3.0_SW_3HRLY_MONTHLY_UTC_NC (netCDF) |
Readme_3_sw_3hrly_monthly_nc | Fortran_3_sw_3hrly_monthly_nc | |||
Please refer to SRB Previously Released Datasets if you need older versions of these data.
