###TITEL_ICDC###

CERES Radiation Fluxes

Access

UNRESTRICTED

This data set is only available for a restricted user group, please contact us if you want to access these data.

RESTRICTED only accessable in CEN/MPI net or via CliSAP login  What does that mean?

View data via LAS

Access data via OPeNDAP

Data access via file system: /data/icdc/atmosphere/ceres_ebaf

 

Description

CERES stands for Clouds and Earth's Radiation Energy System. CERES products include both solar-reflected and Earth-emitted radiation from the top of the atmosphere (TOA) to the Earth's surface. Cloud properties are determined using simultaneous measurements by other EOS and NPP instruments such as the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Visible and Infrared Sounder (VIRS).

CERES sensors are aboard TERRA and AQUA Earth Observation Satellite (EOS) satellites. These are 3-channel instruments with a shortwave: 0.3 - 5.0 µm, a longwave: 8 - 12 µm, and a so-called total: 0.3 to > 100 µm channel.

CERES TOA products are measured products, taking into account the solar radiation incident at the TOA. CERES surface products are a combination of CERES measured fluxes and atmospheric profiles (GEOS-5.4.1), NCEP SMOBA Ozone, MATCH aerosols and cloud cover properties derived from MODIS Collection 5 until March 2017.

Upwelling fluxes are defined positive, downwelling fluxes are defined negative. Products are available for all-sky and clear-sky conditions. Clear-sky conditions are defined as a 99% cloud-free CERES footprint (about 20 km resolution) using the CERES-MODIS clear-sky mask.

More information about the sensors and the data sets can be found on the CERES web page and in the references section.

This is Version Ed4.1 (Surface) and Ed4.1 (TOA) of the CERES-EBAF Products. This version has several improvements compared to version 2.8, most importantly the usage of advanced and more consistent input data (see references). For changes with respect to V4.0 see the CERES web page.

Also included are data of the cloud radiative effect as well as the TOA incoming solar flux and, since version 4.0 also a few MODIS cloud parameters.

Last update of this data set at ICDC: August 1, 2018.

To top

Parameters

Name Unit
TOA reflected shortwave radiation, all-sky W/m^2
TOA reflected shortwave radiation, clearsky W/m^2
TOA outgoing longwave radiation, all-sky W/m^2
TOA outgoing longwave radiation, clearsky W/m^2
TOA net radiation budget, all-sky W/m^2
TOA net radiation budget, clearsky W/m^2
TOA incident solar radiation W/m^2
TOA longwave cloud radiative effect W/m^2
TOA shortwave cloud radiative effect W/m^2
TOA net cloud radiative effect W/m^2
TOA incoming solar flux W/m^2
Surface shortwave downwelling radiation, all-sky W/m^2
Surface shortwave downwelling radiation, clearsky W/m^2
Surface shortwave upwelling radiation, all-sky W/m^2
Surface shortwave upwelling radiation, clearsky W/m^2
Surface longwave downwelling radiation, all-sky W/m^2
Surface longwave downwelling radiation, clearsky W/m^2
Surface longwave upwelling radiation, all-sky W/m^2
Surface longwave upwelling radiation, clearsky W/m^2
Surface net shortwave radiation, all-sky W/m^2
Surface net shortwave radiation, clearsky W/m^2
Surface net longwave radiation, all-sky W/m^2
Surface net longwave radiation clearsky W/m^2
Surface net total radiation. all-sky W/m^2
Surface net total radiation, clearsky W/m^2
Surface longwave cloud radiative effect W/m^2
Surface shortwave cloud radiative effect W/m^2
Surface net cloud radiative effect W/m^2
Cloud area fraction %
Cloud visible optical depth (daytime) --
Cloud effective pressure hPa
Cloud effective temperature K

To top

Coverage, spatial and temporal resolution

Period and temporal resolution: 

  • 03/2000 to 09/2018 (surface), to 02/2019 (TOA)
  • Monthly

Coverage and spatial resolution:

  • Global
  • Spatial resolution: 1° x 1°, cartesian grid
  • Geographic longitude: 180°W to 180°E
  • Geographic latitude: 90°S to 90°N
  • Dimension: 360 columns x 180 rows
  • Altitude: following terrain for "surface", about 20 km above the Earth's reference ellipsoid for "TOA"

Format:

  • NetCDF

To top

Data quality

The offered data sets do not contain uncertainty estimates.

But a number of documents exist which summarize uncertainties and uncertainty sources as well as the results of the evaluation procedures: --> References

To top

Contact

NASA
CERES staff
Help Desk
email: ceres-help (at) lists.nasa.gov

Seiji Kato
NASA CERES-Staff
email: seiji.kato (at) nasa.gov

Norman Loeb
NASA CERES-Staff
email: norman.g.loeb (at) nasa.gov

Stefan Kern
ICDC / CEN / University of Hamburg
email: stefan.kern (at) uni-hamburg.de

To top

References

  • CERES Webpage
  • CERES Online Documentation
  • CERES EBAF Ed4.0 Data Quality Summary (January 2018)
  • CERES EBAF-Surface Ed4.0 Data Quality Summary (May 2017)
  • Loeb, N. G., et al., 2009, Toward Optimal Closure of the Earth's Top-of-Atmosphere Radiation Budget, Journal of Climate, 22(3), 748-766. doi: 10.1175/2008JCLI2637.1
  • Kato, S., et al., 2013, Surface irradiances consistent with CERES-derived top-of-atmosphere shortwave and longwave irradiances. Journal of Climate, 26, 2719-2740, doi: 10.1175/JCLI-D-12-00436.1
  • Loeb, N.G., et al., 2016, CERES Top-of-Atmosphere Earth radiation budget climate data record: Accounting for in-orbit changes in instrument calibration. Remote Sensing, 8, 182, doi:10.3390/rs8030182
  • Riihela, A., et al., 2017, An intercomparison and validation of satellite-based surface radiative energy flux estimates over the Arctic. Journal of Geophysical Research - Atmospheres, 122, 4829-4848.
  • Loeb, N. G., et al., 2018, Clouds and the Earth's Radiant Energy System (CERES) Energy Balanced and Filled (EBAF) Top-of-Atmosphere (TOA) Edition-4.0 Data Product, Journal of Climate, 31(2), 895-918.
  • Kato, S., et al., 2018, Surface Irradiance of Edition 4.0 Clouds and the Earth's Radiant Energy System (CERES) Energy Balanced and Filled (EBAF) Data Product. Journal of Climate, 31(11), doi: 10.1175/JCLI-D-17-0523.1.
  • Jia, A., et al., 2018, Comprehensive assessment of global surface net radiation products and uncertainty analysis, Journal of Geophysical Research - Atmospheres, 123, 1970-1989, doi: 10.1002/2017JD027903.

Data citation

Please refer to 

"CERES EBAF_Ed4.1" or "CERES EBAF-Surface_Ed4.1" and provide a reference to the following paper when you publish scientific results with the data:

For EBAF-TOA:

Loeb, N. G., B. A. Wielicki, D. R. Doelling, G. L. Smith, D. F. Keyes, S. Kato, N. Manalo-Smith, and T. Wong, 2009: Toward Optimal Closure of the Earth's Top-of-Atmosphere Radiation Budget, Journal of Climate, 22(3), 748-766, doi: 10.1175/2008JCLI2637.1

For EBAF-Surface:

Kato, S., N. G. Loeb, F. G. Rose, D. R. Doelling, D. A. Rutan, T. E. Caldwell, L. Yu, and R. A. Weller, 2013: Surface irradiances consistent with CERES-derived top-of-atmosphere shortwave and longwave irradiances. Journal of Climate, 26, 2719-2740, doi: 10.1175/JCLI-D-12-00436.1

Please acknowledge also the original source of the data download as:  These data were obtained from the NASA Langley Research Center CERES ordering tool at (http://ceres.larc.nasa.gov/), last access date: July 31, 2019.

To top

###BACKLINK###     ###TOPLINK###    
Print