MODIS/Aqua Aerosol Cloud Water Vapor Ozone 8-Day L3 Global 1Deg CMG (MYD08_E3, Collection 004 and 005)
Entry ID:
MYD08_E3
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Summary
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.
MYD08_E3 is a level-3 MODIS gridded atmosphere eigh-day global
joint product. It contains eight days 1 x 1 degree grid average
values of atmospheric parameters related to atmospheric aerosol
particle properties, total ozone burden, atmospheric water vapor,
cloud optical and physical properties, and atmospheric stability
indices. This product also provides standard deviations, quality
assurance weighted means and other statistically derived
quantities for each parameter.
The shortname for this level-3 MODIS atmosphere eight-day global
product is MYD08_E3 and the principal investigators for this
product are MODIS scientists: Dr. Yoram Kaufman
(kaufman@climate.gsfc.nasa.gov) for aerosol retrieval over land;
Dr. Didier Tanre (didier.tanre@univ-lille1.fr) for aerosol
retrieval over ocean; 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-3 atmosphere eight-day global product (MYD08_E3)
consists of approximately 739 parameters that includes all
statistically derived quantities. Essentially all level-3 MODIS
atmosphere eight-day global parameters are derived from the
scientific parameters of MODIS Atmosphere Daily Global Joint
Product (MYD08_D3). Statistics are computed over a 1 degree
equal-angle lat-lon grid that spans an 8-day interval. It should
be noted that the eight-day intervals are not reset at the
beginning of a new month or a new year. Since the grid cells are 1
degree by 1 degree, the output grid is always 360 pixels in width
and 180 pixels in length.
MYD08_E3 product files are stored in Hierarchical Data Format
(HDF-EOS). Each gridded global parameter is stored as Scientific
Data Sets (SDS) within the file. For browsing and extracting data
from these files, some software are made available at the site.
MYD08_E3 PARAMETERS
Aerosol over Land and Ocean:
Optical Depth (0.55 micron)
Aerosol over Land:
Optical Depth at 0.47 and 0.66 micron (based on Continental Aerosol
Model)
Corrected Optical Depths at 0.47, 0.55, 0.66 micron (based on Dynamic
Aerosol Model)
Corrected Optical Depths at 0.47, 0.55, 0.66 micron for Smoke, Sulfate,
and Dust Aerosol
Mass Concentration
Angstrom Exponents for Smoke, Sulfate, and Dust Aerosol Particles
Aerosol over Ocean:
Effective Optical Depth at 7 bands (0.47, 0.55, 0.66, 0.87, 1.24,
1.64, 2.13 micron)
Effective Radius, Mass Concentration, Cloud Condensation Nuclei
Optical Depth of Small Particles relative to Effective Optical Depth
Asymmetry Factor & Back Scattering Ratio at 7 bands
Angstrom Exponents 1 (based on 0.55 and 0.865 micron) & 2 (based on
0.865 and 2.13 micron)
Ozone:
Total Column Ozone
Water Vapor:
Total Column Precipitable Water Vapor
NIR based (clear, cloudy), IR based (lower, upper levels, total)
Cloud:
Cloud Top Pressure, Temperature, and Effective Emissivity(day,night, all)
Cloud Particle Phase (day, night, all)
Cloud Optical Thickness (water, ice, water + ice, undetermined,
all phases)
Effective Radius (water, ice, water + ice, undetermined, all phases)
Cloud Water Path (liquid, ice, liquid + ice, undetermined, all phases)
Cloud Fraction based on Visible & SWIR (cirrus, contrail, water, ice,
water + ice, undetermined, all phases)
Cloud Fraction based on IR (day, night, all)
Atmospheric State & Stability Indices:
Total-Totals, Lifted Index, K Index
Radiation Parameters:
Cirrus Cloud & Contrail Reflectance
Mean Surface Reflectance for Land (5 bands) & Ocean (7 bands)
Normalized Reflected Flux for Land (0.47 & 0.66 micron) &
Ocean (7 bands)
Normalized Transmitted Flux for Land (0.47 and 0.66 micron), Ocean(7 bands)
Atmospheric Scattering Angle for Land and Ocean
Quality Assurance (QA) & Statistical Parameters:
Uncertainty in Derived Parameters, Minimum, Maximum, Number of Pixels,
Histograms, Correlation Parameters, QA Weighted, and other Statistically
Derived Parameters
More information about the atmospheric parameters and the
statistically derived parameters of MYD08_E3 product listed above
are available from the MYD08_E3 web site.
The MODIS Eight-Day Product will be used in the simultaneous study
of clouds, water vapor, aerosol , trace gases, land surface and
oceanic properties, as well as the interaction between them and
their effect on the Earth's energy budget and climate. This
product will also 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 resolution.
For more information about the MYD08_E3 product, please visit the
MODIS-Atmosphere site at:
http://modis-atmos.gsfc.nasa.gov/MOD08_E3/ 
Related URL
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Description:
Access Collection 5 data set MYD08_E3 from the LAADS FTP server.
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Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: 90.0
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S: -90.0
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E: 180.0
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W: -180.0
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Data Resolution
Temporal Resolution:
30 minutes
Data Set Progress
IN WORK
Distribution
Distribution Media:
Online
Personnel
Role:
DIF AUTHOR
Email:
gsfc-gcmduso at mail.nasa.gov
Role:
INVESTIGATOR
Phone:
512-475-4611
Contact Address:
Oil Spill Prevention & Response
Texas General Land Office
1700 N. Congress Ave.
SFA Bldg., Rm. 340
City:
Austin
Province or State:
TX
Postal Code:
78701-1495
Country:
USA
Creation and Review Dates
DIF Creation Date:
1996-12-23
Last DIF Revision Date:
2006-10-24
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