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CERES SRBAVG Product Information

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SRBAVG Documentation

  • Data Quality Summary link to external site — Highlights the accuracy of this product as determined by the CERES Science Team.

SRBAVG Product Features

  • The SRBAVG product contains monthly and monthly hourly regional, zonal, and global averages of the TOA and surface LW and SW fluxes and the observed cloud conditions for each 1-degree equal-angle region.
  • This product differs from the AVG product in three ways:
    • The surface fluxes have been calculated from the TOA fluxes using parameterizations provided by the science team, instead of using the models provided by the SARB Subsystem.
    • No flux fields are calculated at levels between TOA and the surface.
    • The regional TOA fluxes are calculated using two methods.
  • There is one produced for each spacecraft and one for each combination of spacecraft.
  • This product is written in HDF and contains metadata as well as gridded science data.
  • SRBAVG is composed of the following structures contained in three separate files (SRBAVG1, SRBAVG2, SRBAVG3) on a Regional, Zonal, and Global Basis:
    • Regional parameters (SRBAVG1).
    • Total-sky radiative fluxes at TOA and surface (SRBAVG1).
    • Clear-sky radiative fluxes at TOA and surface (SRBAVG1).
    • Surface data (SRBAVG1).
    • CERES and GEO Layer-averaged cloud properties (SRBAVG2).
    • CERES Layer-averaged cloud properties (SRBAVG3).
  • Input to the SRBAVG Subsystem is the Single Scanner Footprint TOA/Surface Fluxes (SSF) Level2 archival product.
  • Applicable Studies:
    • Angular dependent of radiance.
    • Cloud and aerosol properties comparison.
    • Cloud and aerosol radiative forcing estimate or comparison with other estimate.
    • Comparison of radiation, aerosol and cloud properties with model other then GCM (ie. LES, CRM).
    • Comparison with GCMs.
    • Instrument study.
    • Interpretation of radiation cloud and aerosol property variability.
    • Surface flux calculation with simple transfer model.
    • TOA flux only comparison.

SRBAVG Processing Flowchart

Image: SRBAVG Processing Flowchart

SRBAVG Product Parameters

TOA Fluxes
Surface Fluxes
Cloud Properties
[Diurnally Complete]
Auxiliary Data
  • Shortwave Flux
  • Longwave Flux
  • Window-region Flux (8-12µm)
  • Net Flux
  • Albedo
  • Shortwave Flux - Down
  • Longwave Flux - Down
  • Window-region Flux - Down
  • Net Shortwave Flux
  • Net Longwave Flux
  • LW Surface Emissivity
  • WN Surface Emissivity
  • Cloud Area Fraction
  • Cloud Effective Pressure
  • Cloud Effective Temperature
  • Cloud Effective Height
  • Cloud Top Pressure
  • Cloud Base Pressure
  • Cloud Particle Phase
  • Liquid Water Path
  • Ice Water Path
  • Water Particle Radius
  • Ice Particle Effective Diameter
  • Cloud Visible Optical Depth
  • Surface Type Percent Coverage
  • Snow/Ice Percent Coverage
  • Precipitable Water

SRBAVG Spatial and Temporal Resolutions

  Spatial Resolutions
Regional grid
(1°x1° latitude by longitude)
Zonal grid
(1° latitude)
Monthly SRBAVG
Monthly Hourly SRBAVG

SRBAVG Product Availability

SRBAVG Product Processing Status ( by year / by month / by product edition)
Product Sat
Level 3
2000 2001 2002 2003 2004 2005
Level 3
Mar Terra SRBAVG 2000 Available   Terra SRBAVG 2001 Available   Terra SRBAVG 2002 Available   Terra SRBAVG 2003 Available   Terra SRBAVG 2004 Available Oct Terra SRBAVG 2005 Available
 Aqua SRBAVG 2000 Not Available  Aqua SRBAVG 2001 Not Available Jul Aqua SRBAVG 2002 Available   Aqua SRBAVG 2003 Available   Aqua SRBAVG 2004 Available Oct Aqua SRBAVG 2005 Available

 Terra Available  Aqua Available  S-NPP Available  J01 Available
 Combined (Terra+Aqua)  Combined (Terra+NPP)  Not Available (odd rows)  Not Available (even rows)

  • By clicking on "by month", a more detailed table will be rendered with the ability to click on specific months for daily and hourly Level 2 and Level 1B products.
  • By clicking on "by product edition", a more detailed table will be rendered with the versions of the product available.

CERES Instrument Temporal Coverage
Spacecraft Instrument(s) Launch Date Start Date End Date
TRMM PFM 11/27/1997 12/27/1997 05/29/2001
Terra FM1 & FM2 12/18/1999 02/25/2000 Still in operation
Aqua FM3 & FM4 05/04/2002 06/19/2002 Still in operation
S-NPP FM5 10/28/2011 01/27/2012 Still in operation
J01 FM6 11/18/2017 01/6/2018 Still in operation

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  Image: NASA Logo NASA Official: Dr. Norman Loeb
Page Curator: Edward Kizer
Page Last Modified: 07/30/2018 14:57:49 EST
Site Last Modified: 09/24/2018 14:51:08 EST