MOD04_L2_5.1

MODIS/Terra Aerosol 5-Min L2 Swath 10km V5.1

Version 5.1 eng
  • Abstract
    MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am 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 atmospheric aerosol product provides retrieved ambient aerosol optical properties (e.g., optical thickness and size distribution), mass concentration, look-up table derived reflected and transmitted fluxes, as well as quality assurance and other ancillary parameters, globally over ocean and near globally over land. The shortname for this level-2 MODIS aerosol product is MOD04_L2 and the principal investigators for this product are MODIS scientists: Dr. Yoram Kaufman for aerosol retrieval over land, and Dr. Didier Tanre (didier.tanre@univ-lille1.fr) for aerosol retrieval over ocean. The MODIS aerosol product (MOD04_L2) contains global data that has a spatial resolution of 10-km (at nadir). Each MOD04_L2 product file covers a five-minute time interval. The output grid is 135 pixels in width by 203 pixels in length. Every tenth file has an output grid size of 135 by 204 pixels. MOD04_L2 product files are stored in Hierarchical Data Format (HDF-EOS). The file consists of 53 pixel level gridded aerosol parameters. These pixel level gridded aerosol parameters are stored as Scientific Data Sets(SDS) within the file. Each file is roughly 10.46 MB in size, and the total data volume is approximately 1.44 GB/day. MODIS 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 Aerosol Parameters for Land & Ocean (Combined) aerosol optical depth (0.55 micron) over land and ocean scattering angle Aerosol Parameters from Ocean Retrieval Algorithm (best/average retrieval) Aerosol Particle Properties: effective optical depth at 7 bands (0.47,0.55,0.66,0.87,1.24,1.64,2.13 micron) effective radius (based on 0.55 micron) optical depth for small & large particles ratio of small mode optical depth relative to total for 0.55 micron mass concentration & cloud condensation nuclei (based on 0.55 micron) Angstrom exponents 1 (based on 0.55 and 0.865 micron) Angstrom exponent 2 (based on 0.865 and 2.13 micron) asymmetry factor & back scattering ratio at 7 bands solution indices for small & large modes Aerosol Parameters from Land Retrieval Algorithm: aerosol type, continental optical depth corrected optical depth, mass concentration; Angstrom exponent and dust weighting factor Aerosol Derived Radiation Parameters from both Algorithms (Land & Ocean): reflected flux, transmitted flux mean reflectance & uncertainty Quality Assurance & Statistical Parameters from both Algorithms(land & Ocean) : quality assurance flag, cloud mask, cloud fraction, number of pixels used, least square error These aerosol parameters will be used to study aerosol climatology, sources and sinks of specific aerosol types (e.g. sulfates and biomass burning aerosol), interaction of aerosols with clouds, and atmospheric corrections of remotely sensed surface reflectance over the land. This product will also be used to monitor aerosol mass concentration, aerosol optical properties, and radiative forcing on a global scale. See the MODIS Science Team homepage for more data set information: http://modis.gsfc.nasa.gov/data/dataprod/ or visit the MODIS Atmosphere Team homepage: http://modis-atmos.gsfc.nasa.gov/MOD04_L2/
  • Purpose
    Science Research
  • Version Description
    Terra MODIS Version 5.1 Data Collection, Fourth 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
    • AEROSOLS
    • AEROSOL BACKSCATTER
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • AEROSOL EXTINCTION
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • AEROSOL OPTICAL DEPTH/THICKNESS
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • AEROSOL PARTICLE PROPERTIES
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • AEROSOL RADIANCE
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • CARBONACEOUS AEROSOLS
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • CLOUD CONDENSATION NUCLEI
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • DUST/ASH/SMOKE
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • NITRATE PARTICLES
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • ORGANIC PARTICLES
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • PARTICULATE MATTER
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • SULFATE PARTICLES
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • OPTICAL DEPTH/THICKNESS
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • RADIATIVE FLUX
    • EARTH SCIENCE
    • ATMOSPHERE
    • ATMOSPHERIC RADIATION
    • REFLECTANCE
    • EARTH SCIENCE
    • ATMOSPHERE
    • AEROSOLS
    • AEROSOL OPTICAL DEPTH/THICKNESS
    • ANGSTROM EXPONENT
Other Descriptive Keywords
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ISO Topic Categories
  • CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Additional Attributes
  • SuccessfulRetrievalPct_Land
    FLOAT
    None
    Resolution Range Begin Range End Unit of Measure Accuracy
    -1e-06 100.000001

  • SuccessfulRetrievalPct_Ocean
    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
    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

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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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