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

Description

CER_SYN1deg-Day_Aqua-MODIS_Edition4A is the Clouds and the Earth's Radiant Energy System (CERES) and geostationary (GEO)-Enhanced Top-of-Atmosphere (TOA) and Surface Fluxes, Clouds and Aerosols Daily Aqua Edition4A data product. Data was collected using CERES Imaging Radiometers on Geostationary Satellites as well as CERES Flight Model 3 (FM3), FM4, CERES Scanner, and Moderate-Resolution Imaging Spectroradiometer on Aqua. Data collection for this product is complete. The CERES Synoptic Radiative Fluxes and Clouds (SYN) 1degree products provide CERES-observed temporally interpolated 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 the Global Modeling and Assimilation Office (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 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 narrow-band to broadband using empirical regressions and then to broadband GEO TOA fluxes using Angular Distribution Models (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. 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, protoflight model (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 Earth Observing System (EOS) flagship Terra on December 18, 1999. Two additional CERES instruments (FM3 and FM4) were launched on board Earth Observing System (EOS) Aqua on May 4, 2002. The CERES FM5 instrument was launched on board the Suomi National Polar-orbiting Partnership (NPP) satellite on October 28, 2011. The newest CERES instrument (FM6) was launched on board the Joint Polar-Orbiting Satellite Syst

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FAQUA%2FCERES%2FSYN1deg-Day-MODIS_L3.004A
21 CERES project home page https://ceres.larc.nasa.gov/
21 ASDC Data and Information for CERES https://asdc.larc.nasa.gov/project/CERES
33 CERES SYN1deg Data Set Abstract https://asdc.larc.nasa.gov/documents/ceres/guide/cer_syn1deg.pdf
21 How to cite ASDC data https://asdc.larc.nasa.gov/citing-data
33 Quality Summary: CERES_SYN1deg_Ed4A (10/3/2017) https://ceres.larc.nasa.gov/documents/DQ_summaries/CERES_SYN1deg_Ed4A_DQS.pdf
21 NASA EOS ATB Documents: CERES https://eospso.gsfc.nasa.gov/atbd-category/40
33 HDF Science Data Set (SDS) Information Tool Overview https://asdc.larc.nasa.gov/documents/ceres/readme/hdf_sds_info.pdf
21 HDF Scientific Data Set (SDS) Information Utility Readme https://asdc.larc.nasa.gov/documents/ceres/readme/hdf_sds_info_readme.txt
33 Hierarchical Data Format (HDF) Overview https://asdc.larc.nasa.gov/documents/ceres/readme/hdf.pdf
21 View HDF Version 5 Readme https://asdc.larc.nasa.gov/documents/ceres/readme/README.txt
33 Directions on downloading and installing the HDF libraries https://asdc.larc.nasa.gov/documents/ceres/readme/ftp_instruct.pdf
33 HDF data manipulation software (applications to open a Hierarchical Data Format (HDF) file and display a browse image and/or data file information) https://asdc.larc.nasa.gov/documents/ceres/readme/hdf_data_manipulation.pdf
33 CERES Data Management System View HDF User's Guide - Version 5.0, November 2007 https://asdc.larc.nasa.gov/documents/ceres/readme/view_hdf_UG5.0.pdf
33 View HDF: A Visualization and Analysis Tool for HDF Files (overview of and resources for using view_hdf) https://asdc.larc.nasa.gov/documents/ceres/readme/view_hdf.pdf

Tags

  • atmospheric-radiation
  • biosphere
  • atmospheric-water-vapor
  • aerosols
  • atmosphere
  • atmospheric-temperature
  • vegetation
  • atmospheric-pressure
  • clouds
  • earth-science

Topics

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