CER_SYN1deg-Day_Terra-MODIS_Edition4A

CERES and GEO-Enhanced TOA, Within-Atmosphere and Surface Fluxes, Clouds and Aerosols Daily Terra Edition4A

Version Edition4A eng
  • Abstract
    The CERES SYN1deg products provide CERES-observed temporally interpolated top-of-atmosphere (TOA) radiative fluxes and coincident MODIS-derived cloud and aerosol properties and include geostationary-derived cloud properties and broadband fluxes that have been carefully normalized with CERES fluxes in order to maintain the CERES calibration. They also contain computed initial TOA, in-atmosphere, and surface fluxes and computed fluxes that have been adjusted or constrained to the CERES-observed TOA fluxes. The computed fluxes are produced using the Langley Fu-Liou radiative transfer model. Computations use MODIS and geostationary satellite cloud properties along with atmospheric profiles provided by GMAO. The adjustments to clouds and atmospheric properties are also provided. The computations are made for all-sky, clear-sky, pristine (clear-sky without aerosols), and all-sky without aerosol conditions. This product provides parameters on a daily temporal resolution and 1°-regional spatial scales. Fluxes are provided for clear-sky and all-sky conditions in the longwave (LW), shortwave (SW), and window (WN) regions. The CERES SYN1deg products use 1-hourly radiances and cloud property data from geostationary (GEO) imagers to more accurately model variability between CERES observations. To use GEO data to enhance diurnal sampling, several steps are involved. First, GEO radiances are cross-calibrated with the MODIS imager using only data that is coincident in time and ray-matched in angle. Next, the GEO cloud retrievals are inferred from the calibrated GEO radiances. The GEO radiances are converted from narrowband to broadband using empirical regressions and then to broadband GEO TOA fluxes using ADMs and directional models. To ensure GEO and CERES TOA fluxes are consistent, a normalization technique is used. Instantaneous matched gridded fluxes from CERES and GEO are regressed against one another over a month from 5°x5 ° latitude-longitude regions. The regression relation is then applied to all GEO fluxes to remove biases that depend upon cloud amount, solar and view zenith angles, and regional dependencies. The regional means are determined for 1° equal-angle grid boxes calculated by first interpolating each parameter for any missing times of the CERES/GEO observations to produce a complete 1-hourly time series for the month. Monthly means are calculated using the combination of observed and interpolated parameters from all days containing at least one CERES observation. Clouds and the Earth's Radiant Energy Systems (CERES) is a key component of the Earth Observing System (EOS) program. The CERES instruments provide radiometric measurements of the Earth's atmosphere from three broadband channels. The CERES missions are a follow-on to the successful Earth Radiation Budget Experiment (ERBE) mission. The first CERES instrument (PFM) was launched on November 27, 1997 as part of the Tropical Rainfall Measuring Mission (TRMM). Two CERES instruments (FM1 and FM2) were launched into polar orbit on board the EOS flagship Terra on December 18, 1999. Two additional CERES instruments (FM3 and FM4) were launched on board EOS Aqua on May 4, 2002. The newest CERES instrument (FM5) was launched on board the Suomi National Polar-orbiting Partnership (NPP) satellite on October 28, 2011.
  • Version Description
    SYN1deg Edition4A leverages algorithm changes to inputs include improved instrument calibration, cloud properties, and Angular Distribution Models (ADMs). A consistent meteorological assimilation data (GEOS 5.4.1). MODIS radiances and aerosols are based upon Collection 5 through January 2017 before changing to Collection 6. Hourly geostationary imager data is used.
  • DOI

    10.5067/TERRA+AQUA/CERES/SYN1DEGDAY_L3.004A

Data Identification Fields:

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    Data Dates
    Creation
    Last Revision
    Processing Level

    3

    Quality
    Please review the Data Quality Summary
    Collection Progress

    Active

    Access Constraints

    4.0

    Not provided

    Science Keywords
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • OUTGOING LONGWAVE RADIATION
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD MICROPHYSICS
    • CLOUD LIQUID WATER/ICE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD TOP HEIGHT
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • RADIATIVE FLUX
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD BASE PRESSURE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD TOP PRESSURE
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • ATMOSPHERIC EMITTED RADIATION
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC TEMPERATURE
    • SURFACE TEMPERATURE
    • SKIN TEMPERATURE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD MIDLAYER TEMPERATURE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD MICROPHYSICS
    • CLOUD DROPLET CONCENTRATION/SIZE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD MICROPHYSICS
    • CLOUD OPTICAL DEPTH/THICKNESS
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD HEIGHT
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • LONGWAVE RADIATION
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • ULTRAVIOLET RADIATION
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • SHORTWAVE RADIATION
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD FRACTION
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC PRESSURE
    • SURFACE PRESSURE
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC WATER VAPOR
    • PRECIPITABLE WATER
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • AEROSOL OPTICAL DEPTH/THICKNESS
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD TOP TEMPERATURE
    • EARTH SCIENCE
    • BIOSPHERE
    • VEGETATION
    • PHOTOSYNTHETICALLY ACTIVE RADIATION
Other Descriptive Keywords
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Ancillary Keywords
  • Atmosphere Incoming SW Entropy
  • Atmosphere Outgoing LW Entropy
  • Clear-Sky Fluxes
  • Cloud Effective Height
  • Cloud Effective Pressure
  • Cloud Effective Temperature
  • Cloud Infrared Emissivity
  • Cloud Particle Phase
  • Cloud Vertical Aspect Ratio
  • Column Ozone
  • In-Atmospheric Fluxes
  • PAR Fluxes
  • Shortwave Diffuse Fluxes
  • Shortwave Direct Fluxes
  • Surface Downward LW Entropy
  • Surface Fluxes
  • Surface Incoming SW Entropy
  • Surface Upward LW Entropy
  • TOA Fluxes
  • TOA Incoming SW Entropy
  • TOA Outgoing LW Entropy
  • Total-Sky Fluxes
  • Window-region Flux
ISO Topic Categories
  • CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    GEOSTATIONARY SATELLITES
    Instruments
    • IMAGING RADIOMETERS
  • Earth Observation Satellites
    TERRA
    Instruments
    • CERES-FM1
    • CERES SCANNER
    • CERES-FM2
    • MODIS
Projects
Project Short Name Campaigns Project Dates
CERES No campaigns listed. No dates provided.

Temporal Information Fields:

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Spatial Information Fields:

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Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • NASA/LARC/SD/ASDC
    ARCHIVER
    Atmospheric Science Data Center, Science Directorate, Langley Research Center, NASA

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

Data Contacts

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  • NORMAN
    Investigator
    NORMAN LOEB

    Hampton, VA 23681-2199

  • DAVID
    Technical Contact
    DAVID DOELLING

    NASA Langley Research Center
    Mail Stop 420
    Hampton, VA 23681-2199

  • ASDC
    Metadata Author
    ASDC USER SERVICES

    NASA Langley Atmospheric Science Data Center
    User and Data Services
    NASA Langley Research Center
    Hampton, VA 23681-2199

  • SEIJI
    Investigator
    SEIJI KATO

    NASA Langley Research Center
    Mail Stop 420
    Hampton, VA 23681-2199

    This contact does not have any contact mechanisms listed.

  • ASDC
    Data Center Contact
    ASDC USER SERVICES

    NASA/LARC/SD/ASDC

    NASA Langley Atmospheric Science Data Center
    User and Data Services
    NASA Langley Research Center
    Hampton, VA 23681-2199

Collection Citations Fields:

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