MODIS/Terra Clouds 5-Min L2 Swath 1km and 5km

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Identification_Information:
Citation:
Citation_Information:
Originator: MODIS Atmosphere Team
Publication_Date: Unknown
Title: MODIS/Terra Clouds 5-Min L2 Swath 1km and 5km
Edition: Collection 004 and 005
Geospatial_Data_Presentation_Form:
Series_Information:
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Online_Linkage: http://modis-atmos.gsfc.nasa.gov/MOD06_L2/
Description:
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 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 MOD06_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 (MOD06_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 MOD06_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. MOD06_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. MOD06_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. For more information about the MOD06_L2 product, visit the MODIS-Atmosphere site at: http://modis-atmos.gsfc.nasa.gov/MOD06_L2/ or See the MODIS Science Team homepage for more data set information at: http://modis.gsfc.nasa.gov/data/dataprod/
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Ackerman, S. A., W. L. Smith and H. E. Revercomb, 1990: The 27-28 October 1986 FIRE IFO cirrus case study: spectral properties of cirrus clouds in the 8-12 micron window. Mon. Wea. Rev., 118, 2377-2388. Ackerman, S. K. Strabala, P.Menzel, R. Frey, C. Moeller, and L. Gumley, 1998: Discriminating clear sky from clouds with MODIS. J. Geophys. Res., 103, 32141-32157 Chu, A., K. Strabala, S. Platnick, E. Moody,M. King, S. Mattoo, R. Hucek, and B. Ridgway, 2000: MODIS Atmosphere QA Plan. Version 2.2 ,NASA Goddard Space Flight Center, 46 pp. Gao, B.-C., Y. J. Kaufman, W. Han, and W. J. Wiscombe, 1998: Correction of thin cirrus path radiance in the 0.4 - 1.0 ?m spectral region using the sensitive 1.375-m cirrus detecting channel, J.Geophys. Res., 103, 32169-32176. Gao, B.-C., W. Han, S.-C. Tsay, and N. F. Larsen, 1998: Cloud detection over arctic region using airborne imaging spectrometer data during the daytime,J. Appl. Meteorol., 37, 1421-1429. Gao, B.-C., and Y. J. Kaufman, 1995: Selection of the 1.375-?m MODIS channel for remote sensing of cirrus clouds and stratospheric aerosols from space, J. Atm. Sci., 52, 4231-4237. Gao, B. -C, A. F. H. Goetz, and W. J. Wiscombe, 1993: Cirrus detection from Airborne Imaging Radiometer using 1.38 micron water vapor band. Geophys. Res. Letter, 4,301-304. King, M., Y. Kaufman, W. P. Menzel, D. Tanre, B. Gao, 1999: MODIS Atmosphere Validation Plan, NASA Goddard Space Flight Center, 48 pp. King, M. D., S. C. Tsay, S. E. Platnick, M. Wang, and K. Liou, 1997: Cloud Retrieval Algorithms for MODIS: Optical Thickness, Effective Particle Radius, and Thermodynamic Phase ,Algorithm Theoretical Basis Document, ATBD-MOD-05, NASA Goddard Space Flight Center, King, M. D., W. P. Menzel, P. S. Grant, J. S. Myers, G. T. Arnold, S. E. Platnick, L. E.Gumley, S. C. Tsay, C. C. Moeller, M. Fitzgerald, K. S. Brown and F. G.Osterwisch, 1996: Airborne scanning spectrometer for remote sensing of cloud, aerosol, water vapor and surface properties. J. Atmos. Oceanic Technol.,13, 777–794. King, M. D., Y. J. Kaufman, W. P. Menzel and D. Tanr?, 1992: Remote sensing of cloud, aerosol and water vapor properties from the Moderate Resolution Imaging Spectrometer (MODIS). IEEE Trans. Geosci. Remote Sens., 30, 2–27. King, M. D., 1987: Determination of the scaled optical thickness of clouds from re-flected solar radiation measurements. J. Atmos. Sci., 44, 1734–1751. King, M. D., M. G. Strange, P. Leone and L. R. Blaine, 1986: Multiwavelength scanningradiometer for airborne measurements of scattered radiation within clouds. J. Atmos. Oceanic Technol., 3, 513–522. King, M. D., 1981: A method for determining the single scattering albedo of clouds through observation of the internal scattered radiation field. J. Atmos.Sci., 38, 2031–204. Menzel, P., and M. King, 1997:MODIS Cloud Product, in MTPE EOS Data Products Handbook,109-111. Menzel, P., and K. Strabela. 1997: Cloud Top Properties and Cloud Phase,Algorithm Theoretical Basis Document.ATBD-MOD-04, NASA Goddard Space Flight Center,56 pp. Menzel, W. P. and K. I. Strabala, 1989: Preliminary report on the demonstration of the VAS CO2 cloud parameters (cover, height, and amount) in support of the Automated Surface Observing System (ASOS). NOAA Tech Memo NESDIS 29. Nakajima, T., M. D. King , J. D. Spinhirne and L. F. Radke, 1991: Determination of the optical thickness and effective particle radius of clouds from reflected solar radiation measurements. Part II: Marine stratocumulus observations. J. Atmos. Sci., 48, 728–750. Nakajima, T., and M. D. King, 1990: Determination of the optical thickness and effective particle radius of clouds from reflected solar radiation measurements. Part I: Theory. J. Atmos. Sci., 47, 1878–1893. Rossow, W. B., and L.C. Gardner, 1993: Cloud detection using satellite measurements of infrared and visible radiances for ISCCP, J. Climate, 6, 2341-2369. Strabala, K. I., S. A. Ackerman and W. P. Menzel, 1994: Cloud properties inferred from 8-12 micron data. J. Appl. Meteor, 33, No. 2, 212-229.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010306
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: 90.0
South_Bounding_Coordinate: -90.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD FREQUENCY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD ASYMMETRY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD CEILING
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD CONDENSATION NUCLEI
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD RADIATIVE TRANSFER > CLOUD EMISSIVITY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD RADIATIVE TRANSFER > CLOUD RADIATIVE FORCING
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD HEIGHT
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD LIQUID WATER/ICE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD OPTICAL DEPTH/THICKNESS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD PRECIPITABLE WATER
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD RADIATIVE TRANSFER > CLOUD REFLECTANCE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD TOP PRESSURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD TOP TEMPERATURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD TYPES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD VERTICAL DISTRIBUTION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD DROPLET CONCENTRATION/SIZE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ATMOSPHERIC EMITTED RADIATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > EMISSIVITY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > OPTICAL DEPTH/THICKNESS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > RADIATIVE FLUX
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > REFLECTANCE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > TRANSMITTANCE
Theme_Keyword: TERRA > EARTH OBSERVING SYSTEM, TERRA (AM-1)
Theme_Keyword: MODIS > MODERATE-RESOLUTION IMAGING SPECTRORADIOMETER
Theme_Keyword: DODS > DISTRIBUTED OCEANOGRAPHIC DATA SYSTEM
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: TERRA > EARTH OBSERVING SYSTEM (EOS), TERRA
Theme_Keyword: OPENDAP > OPEN-SOURCE PROJECT FOR A NETWORK DATA ACCESS PROTOCOL
Theme_Keyword: Brightness Temperature
Theme_Keyword: Cirrus Reflectance
Theme_Keyword: Cloud Altitude
Theme_Keyword: Cloud Climatology
Theme_Keyword: Cloud Effective Radius
Theme_Keyword: Cloud Extent
Theme_Keyword: Cloud Fraction
Theme_Keyword: Cloud Liquid Water Path
Theme_Keyword: Cloud Microphysics
Theme_Keyword: Cloud Optical Depth
Theme_Keyword: Cloud Optical Properties
Theme_Keyword: Cloud Phase
Theme_Keyword: Cloud Top Height
Theme_Keyword: Cloud Top Temperature
Theme_Keyword: Cloud Type
Theme_Keyword: Cloud Water Path
Theme_Keyword: Contrail
Theme_Keyword: Contrail Reflectance
Theme_Keyword: Droplet Size
Theme_Keyword: Effective Emissivity
Theme_Keyword: Global Change
Theme_Keyword: High Cloud
Theme_Keyword: Ice Cloud
Theme_Keyword: Low Cloud
Theme_Keyword: Mod06
Theme_Keyword: Mod06_l2
Theme_Keyword: Modis Cloud Products
Theme_Keyword: Spectral Cloud Forcing
Theme_Keyword: Thick Cloud
Theme_Keyword: Thin Cloud
Theme_Keyword: Water Cloud
Theme_Keyword: Eosdis
Theme_Keyword: Near Real Time (nrt)
Theme_Keyword: Lance
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > ARCTIC
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Place_Keyword: GEOGRAPHIC REGION > POLAR
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: 5-minute
Temporal_Keyword: 1 Minute - < 1 Hour
Access_Constraints: Available to public to gain familiarity with the data format and parameters.
Use_Constraints:
This Data set (version 004/collection 004) is of 'Provisional' Quality. Even though, it is based on better calibration algorithm but is not fully validated yet. This data is still not appropriate for use in scientific publications. Before using it in any publication please contact science team representative for the known problems and updates.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: LAADS USER SUPPORT TEAM
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: LAADS User Support Team
Address: 4801 Forbes Boulevard
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: 301-731-2917, 1-866-506-6347 (toll-free - US only)
Contact_Facsimile_Telephone: 301-577-6622
Contact_Electronic_Mail_Address: modapsuso@sigmaspace.com
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The 'version 004' or 'collection 004' product is better than 'version 003' and earlier versions. The quality of this version 004 product is established as 'Provisional' . It is based on a better calibration algorithm but the product is not fully validated yet. Product images look reasonable when compared to other spaceborne instruments or comparable data in limited situations. Scientific use should be performed with caution with careful reference to QA statements provided with each product.For the latest information please see: "http://modis-atmos.gsfc.nasa.gov/products_calendar_overview.html".
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
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Process_Date: Unknown
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 5 km
Longitude_Resolution: 5 km
Geographic_Coordinate_Units: Decimal degrees
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NASA/GSFC/SED/ESD/HBSL/BISB/LAADS > 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
Contact_Person: LAADS USER SUPPORT TEAM
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: LAADS User Support Team
Address: 4801 Forbes Boulevard
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: 301-731-2917, 1-866-506-6347 (toll-free - US only)
Contact_Facsimile_Telephone: 301-577-6622
Contact_Electronic_Mail_Address: modapsuso@sigmaspace.com
Resource_Description: MOD06_L2 Collection 004 and 005
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: HDF
Transfer_Size: 15 GB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
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http://ladsweb.nascom.nasa.gov/
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DATA CENTER URL
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http://ladsweb.nascom.nasa.gov/data/search.html
Access_Instructions:
Web site for MODIS Collection 5 L1B, Geo and atmosphere data ordering. Web site for MODIS Collection 4 atmosphere data ordering.
Digital_Transfer_Option:
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ftp://ladsftp.nascom.nasa.gov/allData/5/MOD06_L2/
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Access Collection 5 data set MOD06_L2 via the LAADS FTP server.
Digital_Transfer_Option:
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Computer_Contact_Information:
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Network_Resource_Name:
ftp://ladsftp.nascom.nasa.gov/allData/4/MOD06_L2
Access_Instructions:
Access Collection 4 data set MOD06_L2 via the LAADS FTP server.
Digital_Transfer_Option:
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Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://earthdata.nasa.gov/data/nrt-data/data-produ...
Access_Instructions:
Near real-time (NRT) data are available from MODAPS for certain Aqua and Terra MODIS L0, L1, L2, L2G, and L3 products. Whereas the standard MODIS forward processing acquires 2-hour L0 files for Aqua and Terra from EDOS within 7-8 hours of real time, LANCE-MODIS acquires session-based L0 files from EDOS and the end of the session is available within 10-30 minutes after real time.
Digital_Transfer_Option:
Online_Option:
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http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93...
Access_Instructions:
Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.
Digital_Transfer_Option:
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http://cimss.ssec.wisc.edu/modis1/modis1.html
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Digital_Transfer_Option:
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http://modis.gsfc.nasa.gov/sci_team/
Access_Instructions:
MODIS Science Team
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Network_Address:
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Access_Instructions:
MODIS Characterization Support Team (MCST).
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Online_Option:
Computer_Contact_Information:
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Network_Resource_Name:
http://modis-atmos.gsfc.nasa.gov/
Access_Instructions:
MODIS Atmosphere Team
Digital_Transfer_Option:
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Network_Address:
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Access_Instructions:
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Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
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ftp://ladsftp.nascom.nasa.gov/README
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Readme regarding accessing MODIS data from the LAADS FTP server.
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Online_Option:
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Access_Instructions:
View MODIS data availability.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://modis-atmos.gsfc.nasa.gov/MOD06_L2/sample.h...
Access_Instructions:
Sample and Browse Images for MODIS (MOD06_L2) Aerosol Products
Fees: None
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Metadata_Reference_Information:
Metadata_Date: 20030403
Metadata_Review_Date: 20130610
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GANG YE, PH.D
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Contact_Voice_Telephone: 301-352-2109
Contact_Electronic_Mail_Address: gang.ye@sigmaspace.com
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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