Aqua Product Descriptions: MYD021KM
Last update: August 17, 2017
Data Set Short Name:
MYD021KM
Data Set Long Name:
MODIS/Aqua Calibrated Radiances 5Min L1B Swath 1km
Platform:
Aqua
Instrument:
MODIS
Product Desription:
The MODIS Level 1B Near Real Time (NRT) data set contains calibrated and geolocated at-aperture radiances for 36 discrete bands located in the 0.4 to 14.4 micron region of electromagentic spectrum. These data are generated from the MODIS Level 1A scans of raw radiance and in the process converted to geophysical units of W/(m^2 um sr). In addition, the Earth Bi-directional Reflectance Distribution Function (BRDF) may be determined for the solar reflective bands (1-19, 26) through knowledge of the solar irradiance (e.g., determined from MODIS solar diffuser data, and from the target illumination geometry). Additional data are provided including quality flags, error estimates and calibration data. Visible, shortwave infrared, and near infrared measurements are only made during the daytime, while radiances for the thermal infrared region (bands 20-25, 27-36) are measured continuously.
Channels 1 and 2 have 250 m resolution, channels 3 through 7 have 500m resolution, and the rest have 1 km resolution. However, for the MODIS L1B 1 km product, the 250 m and 500 m band radiance data and their associated uncertainties have been aggregated to 1km resolution.
The MODIS L1B data are stored in the Earth Observing System Hierarchical Data Format (HDF-EOS) which is an extension of HDF as developed by the National Center for Supercomputer Applications (NCSA) at the University of Illinois. Environmental information derived from MODIS L1B measurements will offer a comprehensive and unprecedented look at terrestrial, atmospheric, and ocean phenomenology for a wide and diverse community of users throughout the world. The Shortname for this product is MYD021KM
Production Frequency:
288 files per day
Spatial Coverage:
Global
Spatial Resolution:
1 km
File Size (MB):
~110
Citation:
Dataset Originator/Creator:
MODIS Characterization Support Team (MCST)/MODIS Adaptive Processing System (MODAPS)
Dataset DOI:
http://dx.doi.org/10.5067/MODIS/MYD021KM.061
