MOD02SSH_5

MODIS/Terra Calibrated Radiances 5-Min L1B Swath 1km Subsetted V005

Version 5 eng
  • Abstract
    This data type (MOD02SSH) is a subsample from the MODIS Level 1B 1-km data. Every fifth pixel is taken from the MOD021KM product and written out to MOD02SSH. The subsampling starts at the third frame, and at the third line. Here, "frame" and "line" are naming conventions for pixels along and across the scan, respectively. Since MOD02SSH is a subsampled Level 1B , many things from the Level 1B documentation apply as well. That is, the MOD02SSH data product contains calibrated and geolocated at-aperture radiances for 36 bands generated from MODIS Level 1A scans of raw radiance (MOD 01). The radiance units are in W/(m ^2 um sr). Additional data are provided including quality flags, error estimates and calibration data. Visible, shortwave infrared (SWIR), and Near Infrared (NIR) measurements are made during daytime only, while radiances for Thermal Infrared (TIR) are measured continuously. As it's parent, the MOD02SSH is in HDF-EOS format, and all metadata structures and names are preserved for better convenience. However, some relevant changes are made where appropriate. E.g. the dimension mappings are updated to reflect the new one-to-one correspondance between the data and geolocations. The latter is one of the most important differences: in the MOD02SSH, there is no offset between data and geolocation pixels. The spatial coverage is almost similar to that from MOD021KM (nominally it is 2330 by 2030 km, cross-track by along-track, respectively). The MOD02SSH is produced continuously, and thus the processing provides 2-day repeat observations of the Earth with a repeat orbit pattern every 16 days. (The shortname for this product is MOD02SSH) The V004 Program Executable (PGE), for MODIS Level 1B products, has gone through a series of revisions since the initial release of V4.0.0 in March of 2002. These include revisions to make it LINUX-compatible. The current version is V4.0.9, which does not contain changes to the code that affect scientific output. Below is a brief overview of changes that affect scientific output in previous versions (V4.0.0 to V4.0.7) of PGE code. The MCST web site, listed in the URL section of this DIF, has a more detailed version of this information, including revisions that do not affect scientific output. Significant changes to Look Up Tables (LUT) used in Level 1B processing have occurred. These include revising the Response-versus-Scan Angle (RVS) LUTs from listing the RVS corrections to listing the quadratic coefficients used in making the RVS correction. The coefficients are now calculated by interpolating on the granule collection time and the RVS corrections are then generated using the interpolated coefficients. Previously used Emissive and Reflective RVS LUT tables were eliminated and new ones introduced. An incorrect comparison between RVS coefficients for Thermal Emissivity Bands (TEB) and Reflective Solar Bands (RSB) was being made during the calculation of the RVS coefficients. This was replaced with a comparison between TEB coefficients. This error never resulted in an incorrect RVS correction but did lead to re-calculating the coefficients for each detector in a thermal band even if the coefficients were the same for all 10 detectors. A destriping algorithm for Band 26 devised by C. Moeller was implemented. A new time-dependent LUT was added which gives coefficients for a detector-specific cross-talk correction based on the aggregated Band 5 radiances. The Band 26 scaled integers are adjusted by the Band 5 correction term, which is the product of the Band 5 radiance times the ratio of the Band 5 to Band 26 scaling factors times the LUT correction value for that detector. In addition a new LUT which allows for a frame offset with regard to the Band 5 radiance was added. A LUT which switches the correction off or on was also added. See the homepage for more data set information: http://modis.gsfc.nasa.gov/data/dataprod/
  • Purpose
    Science Research
  • Version Description
    Terra MODIS Version 5 Data Collection Reprocessing

Data Identification Fields:

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    Data Dates
    Creation
    Processing Level

    1B

    Quality
    See http://modaps.nascom.nasa.gov/services/qa/
    Collection Progress

    In Work

    Use Constraints
    None
    Access Constraints

    None

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • INFRARED WAVELENGTHS
    • INFRARED RADIANCE
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • INFRARED WAVELENGTHS
    • REFLECTED INFRARED
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • INFRARED WAVELENGTHS
    • THERMAL INFRARED
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • VISIBLE WAVELENGTHS
    • VISIBLE RADIANCE
Other Descriptive Keywords
Toggle Other Descriptive Keywords Fields
ISO Topic Categories
  • IMAGERY/BASE MAPS/EARTH COVER
Additional Attributes
  • SCI_ABNORM
    INT
    Flag set (to 0) if science_abnormal, the L1A engineering data ground-set flag that indicates potentially abnormal science data due to things other than MODIS (such as maneuvers, data link, etc.), was set for at least one scan in the granule.
    Resolution Range Begin Range End Unit of Measure Accuracy

  • VeryHighConfidentClearPct
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SuccessfulRetrievalPct_Land
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SuccessfulRetrievalPct_Ocean
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SuccessfulRetrievalPct_IR
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SuccessfulRetrievalPct_NIR
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • CloudCoverFractionPct_VIS
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • IceCloudDetectedPct_VIS
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SuccessCloudOptPropRtrPct_VIS
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SuccessCloudPhaseRtrPct_IR
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SuccessCloudTopPropRtrPct_IR
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SuccessfulRetrievalPct
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • ClearPct250m
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • CloudCoverPct250m
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • HighConfidentClearPct
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • LowConfidentClearPct
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SCI_STATE
    INT
    Flag set (to 0) if science_state, the L1A engineering data flag that indicates the Normal/Test configuration of the MODIS instrument, was set for at least one scan in the granule.
    Resolution Range Begin Range End Unit of Measure Accuracy

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    TERRA
    Instruments
    • MODIS
Projects
Project Short Name Campaigns Project Dates
EOSDIS No campaigns listed. No dates provided.
ESIP No campaigns listed. No dates provided.
TERRA 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

Toggle Data Centers
  • NASA/GSFC/SED/ESD/BSL/MCST
    ORIGINATOR
    MODIS Characterization Support Team (MCS), Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

  • NASA/GSFC/SED/ESD/HBSL/BISB/MODAPS
    PROCESSOR
    MODIS Adaptive Processing System, Biospheric Information Systems Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

  • NASA/GSFC/SED/ESD/HBSL/BISB/LAADS
    DISTRIBUTOR
    L1 and Atmosphere Archive and Distribution System,Biospheric Information Systems Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

Data Contacts

Toggle Data Contacts
  • ASAD
    Metadata Author
    ASAD ULLAH

    This contact does not have any addresses listed.

  • MODIS Characterization Support Team (MCS)
    Technical Contact
    MODIS Characterization Support Team (MCS)

    This contact does not have any addresses listed.

  • MODAPS USER SUPPORT TEAM
    Technical Contact
    MODAPS USER SUPPORT TEAM

    MODAPS User Support Team
    NASA/GSFC
    Mail Code: 619
    Greenbelt, MD 20771

    • Email
    • 1-800-596-8132
    • 301-794-7035
  • MODIS Characterization Support Team (MCS)
    Data Center Contact
    MODIS Characterization Support Team (MCS)

    NASA/GSFC/SED/ESD/BSL/MCST

    This contact does not have any addresses listed.

  • MODAPS USER SUPPORT TEAM
    Data Center Contact
    MODAPS USER SUPPORT TEAM

    NASA/GSFC/SED/ESD/HBSL/BISB/MODAPS

    MODAPS User Support Team
    NASA/GSFC
    Mail Code: 619
    Greenbelt, MD 20771

    • Email
    • 1-800-596-8132
    • 301-794-7035
  • MODAPS USER SUPPORT TEAM
    Data Center Contact
    MODAPS USER SUPPORT TEAM

    NASA/GSFC/SED/ESD/HBSL/BISB/LAADS

    MODAPS User Support Team
    NASA/GSFC
    Mail Code: 619
    Greenbelt, MD 20771

    • Email
    • 1-800-596-8132
    • 301-794-7035

Collection Citations Fields:

Toggle Collection Citations Fields