MYD35_L2_5

MODIS/Aqua Cloud Mask and Spectral Test Results 5-Min L2 Swath 250m and 1km V005

Version 5 eng
  • Abstract
    MODIS was launched aboard the Aqua satellite on May 4, 2002 (1:30 pm equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with its 2330 km viewing swath width provides almost daily global coverage. It acquires data in 36 high spectral resolution bands between 0.415 to 14.235 micron with spatial resolutions of 250m(2 bands), 500m(5 bands), and 1000m (29 bands). MODIS sensor counts, calibrated radiances, geolocation products and all derived geophysical atmospheric and ocean products are archived at NASA Goddard DAAC and has been made available to public since April 2000. The MODIS level-2 cloud mask product is a global product generated for both daytime & nighttime conditions at 1-km spatial resolution (at nadir) and for daytime at 250-m resolution. The algorithm employs a series of visible and infrared threshold and consistency tests to specify confidence levels that an unobstructed view of the Earth's surface is observed. An indication of shadows affecting the scene is also provided. The 250-m cloud mask flags are based on the visible channel data only. Radiometrically accurate radiances are required, so holes in the cloud mask will appear wherever the input radiances are incomplete or of poor quality. The shortname for this Level-2 MODIS cloud mask product is MYD35_L2 and the principal investigator for this product is MODIS scientist Dr. Paul Menzel ( paulm@ssec.wisc.edu). MYD35_L2 product files are stored in Hierarchical Data Format (HDF-EOS). Each of the 9 gridded parameters is stored as a Scientific Data Set (SDS) within the HDF-EOS file. The Cloud Mask and Quality Assurance SDS's are stored at 1 kilometer pixel resolution. All other SDS's (those relating to time, geolocation, and viewing geometry) are stored at 5 kilometer pixel resolution. Each file is roughly 47.5 MB in size, and the total data volume is approximately 13.7 GB/day. For browsing and extracting data from these files, some software are made available at the site. MYD35_L2 Data Group & Parameters Spatial & Temporal Resolution: Latitude & Longitude Scan start time Solar and Sensor Viewing Geometry: Solar zenith & Solar azimuth angle Sensor zenith & Sensor azimuth angle Science Parameters Cloud Mask (1km) Cloud Mask (250 m) Quality Assurance Parameters: Quality Assurance Flags (1km) For more information about the MYD35_L2 product, visit the MODIS-Atmosphere site at: http://modis-atmos.gsfc.nasa.gov/MOD35_L2/
  • Purpose
    Science Research
  • Version Description
    Aqua MODIS Version 5 Data Collection, Second Atmosphere Reprocessing Campaign

Data Identification Fields:

Toggle Data Identification Fields
    Data Dates
    Creation
    Processing Level

    2

    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
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD FREQUENCY
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD HEIGHT
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
Other Descriptive Keywords
Toggle Other Descriptive Keywords Fields
ISO Topic Categories
  • CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Additional Attributes
  • ClearPct250m
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy
    -1e-06 100.000001

  • CloudCoverPct250m
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy
    -1e-06 100.000001

  • SuccessfulRetrievalPct
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy
    -1e-06 100.000001

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    AQUA
    Instruments
    • MODIS
Projects
Project Short Name Campaigns Project Dates
EOSDIS No campaigns listed. No dates provided.
ESIP No campaigns listed. No dates provided.
AQUA 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/GSFC/SED/ESD/HBSL/BISB/MODAPS
    ORIGINATOR
    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/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

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  • ASAD
    Metadata Author
    ASAD ULLAH

    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
  • 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/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
    Collection Citations
    • MODIS/Aqua Cloud Mask and Spectral Test Results 5-Min L2 Swath 250m and 1km V005
      5

      Created by: MODIS Science Team

      Published by: L1 and Atmosphere Archive and Distribution System (LAADS)

      Released: 2006-03-17