MYD06_L2_5.1

MODIS/Aqua Clouds 5-Min L2 Swath 1km and 5km V5.1

Version 5.1 eng
  • Abstract
    MODIS was launched aboard the Aqua satellite on May 04, 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 level-2 MODIS cloud product consists of cloud optical and physical parameters. These parameters are derived using remotely sensed infrared, visible and near infrared solar reflected radiances. MODIS infrared channel radiances are used to derive cloud top temperature, cloud top height, effective emissivity, cloud phase (ice vs. water, opaque vs. non-opaque), and cloud fraction under both daytime and nighttime conditions. MODIS visible radiances are used to derive cloud optical thickness and effective particle radius and cloud shadow effects. Near infrared solar reflected radiance provides additional information in the retrieval of cloud particle phase (ice vs. water, clouds vs. snow). The shortname for this level-2 MODIS cloud product is MYD06_L2 and the principal investigators for this product are MODIS scientists Dr. Bo-Cai Gao ( gao@rsd.nrl.navy.mil) for cirrus cloud detection; Dr. Paul Menzel ( paulm@ssec.wisc.edu) for cloud top properties; and Dr. Michael King( king@climate.gsfc.nasa.gov) for cloud optical properties . The level-2 cloud product (MYD06_L2) consists of 46 gridded cloud parameters. These parameters are produced at a spatial resolution of either 1- km or 5-km (at nadir). Each MYD06_L2 product file covers a five-minute time interval. This means that for 5-km resolution parameters, the output grid is 270 pixels in width by 406 pixels in length. Every tenth granule has an output grid size of 270 by 408 pixels. For 1-km resolution parameters, the output grid is 1354 pixels in width by 2030 pixels in length and every tenth granule has an output grid size of 1354 by 2040 pixels. MYD06_L2 product files are stored in Hierarchical Data Format (HDF-EOS). Forty four of the 46 gridded cloud parameters are stored as Scientific Data Sets (SDS) within the file, the remaining two (band number and statistics) are stored as Vdata(table arrays). Approximately 288 files are produced daily. Nighttime files are smaller than their daytime counterparts since only cloud top properties are retrieved at night. Each daytime file is roughly 65.1 MB in size and each nighttime HDF file roughly 12.4 MB in size, and the total data volume is approximately 12.3 GB/day. For browsing and extracting data from these files, some software are made available at the site. MYD06_L2 Data Category & Parameters Spatial & Temporal Resolution: latitude,longitude scan start time Solar and Sensor Viewing Geometry: solar zenith angle, solar azimuth angle sensor zenith angle, sensor azimuth angle Cloud Top Parameters (5km): cloud top pressure from IR retriev(daytime,nighttime,all) cloud top pressures from individual thermal band ratios cloud height retrieval method, tropopause height surface pressure cloud top temperature (daytime,nighttime,all) cloud effective emissivity (daytime,nighttime,all) cloud fraction (daytime,nighttime,all) cloud phase(daytime, nighttime, all) Cloud Optical Properties (1km): cloud optical thickness cloud water path effective particle radius effective particle radius difference Radiation Parameters: spectral cloud forcing cirrus reflectance surface type (emissivity based) Brightness Temperature Brightness Temperature Difference Quality Assurance Parameters: Processing flag for 5 km resolution cirrus reflectance flag for 1 km resolution quality assurance flag for 1 & 5 km resolution cloud mask for 1 & 5 km, radiance variance for thermal bands statistics for parameters at 1km resolution The MODIS Cloud Product will be used to investigate seasonal and inter-annual changes in cirrus (semi-transparent) global cloud cover and cloud phase with multispectral observations at high spatial (1 kilometer) resolution.
  • Purpose
    Science Research
  • Version Description
    Aqua MODIS Version 5.1 Data Collection, Second Atmosphere Reprocessing Campaign

Data Identification Fields:

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    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 ASYMMETRY
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD CEILING
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD MICROPHYSICS
    • CLOUD CONDENSATION NUCLEI
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD RADIATIVE TRANSFER
    • CLOUD EMISSIVITY
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD RADIATIVE TRANSFER
    • CLOUD RADIATIVE FORCING
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD HEIGHT
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD MICROPHYSICS
    • CLOUD LIQUID WATER/ICE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD MICROPHYSICS
    • CLOUD OPTICAL DEPTH/THICKNESS
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD MICROPHYSICS
    • CLOUD PRECIPITABLE WATER
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD RADIATIVE TRANSFER
    • CLOUD REFLECTANCE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD TOP PRESSURE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD TOP TEMPERATURE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD TYPES
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD PROPERTIES
    • CLOUD VERTICAL DISTRIBUTION
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • CLOUD MICROPHYSICS
    • CLOUD DROPLET CONCENTRATION/SIZE
    • EARTH SCIENCE
    • ATMOSPHERE
    • CLOUDS
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • ATMOSPHERIC EMITTED RADIATION
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • EMISSIVITY
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • OPTICAL DEPTH/THICKNESS
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • RADIATIVE FLUX
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • REFLECTANCE
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • TRANSMITTANCE
Other Descriptive Keywords
Toggle Other Descriptive Keywords Fields
ISO Topic Categories
  • CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Additional Attributes
  • CloudCoverFractionPct_VIS
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy
    -1e-06 100.000001

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

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

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

  • SuccessCloudTopPropRtrPct_IR
    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:

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