Combined Aqua & Terra Product: MCD19A1N
Last update: May 17, 2019
Data Set Short Name:
MCD19A1N
Data Set Long Name:
MODIS/Terra+Aqua Land Surface BRF Daily L2G Global 500m and 1km SIN Grid
Platform:
Terra + Aqua
Instrument:
MODIS
Product Description:
The MODIS Near Real Time (NRT) Combined Terra and Aqua Multi-Angle Implementation of Atmospheric Correction (MAIAC) Land Surface Bidirectional Reflectance Factor (BRF) gridded Level 2 product (MCD19A1N) produced daily at 500 meter (m) and 1 kilometer (km) pixel resolutions.
The MCD19A1N product is corrected for atmospheric gases and aerosols using a new MAIAC algorithm that is based on a time series analysis and a combination of pixel- and image-based processing. The MODIS MAIAC Land Surface BRF products provide an estimate of the surface spectral reflectance as it would be measured at ground-level in the absence of atmospheric scattering or absorption.
The MCD19A1N MAIAC Surface Reflectance data product includes 34 Science Dataset (SDS) layers: surface reflectance for bands 1-12, BRF uncertainty for bands 1-2, snow fraction, snow grain size, snow fit, Quality Assessment (QA) bits at 1 km, surface reflectance for bands 1-7 at 500 m, cosine of solar zenith angle, cosine of view zenith angle, relative azimuth angle, scattering angle, solar azimuth angle, view azimuth angle, glint angle, RossThick/Li-Sparse (RTLS) volumetric kernel, and RTLS geometric kernel at 5 km. A low-resolution browse image is also included showing surface reflectance band combination 1, 4, 3 created using a composite of all available orbits.
file_naming_convention = MCD19A1N.AYYYYDDD.hHHvVV.CCC.hdf
- AYYYYDDD = Acquisition Year and Day of Year
- HHMM = Hour and minute of acquisition
- hXXvYY = Sinusoidal Tile Identifier (horizontalXXverticalYY)
- VVV = Collection Version number
- hdf = HDF-EOS (version 4) file format
For additional information consult https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/MCD19A1/
And, for OPS and NRT MAIAC data comparison check https://lance3.modaps.eosdis.nasa.gov/data_products/MCD19AxOPSNRTMay2019update.php
Production Frequency:
~280 file per day
Spatial Coverage:
Global
Spatial Resolution:
500m & 1km
File Size (MB):
~40
Citation:
Lyapustin, A., Wang, Y. (2019). MCD19A1N MODIS/Terra+Aqua Land Surface BRF Daily L2G Global 500m and 1km SIN Grid V006 [Data set]. NASA EOSDIS NRT MODAPS. doi: 10.5067/MODIS/MCD19A1N.NRT.006
Dataset Originator/Creator:
MODIS Land Science Team/MODIS Adaptive Processing System (MODAPS)
Data Authors:
Alexei Lyapustin
Dataset DOI:
http://dx.doi.org/10.5067/MODIS/MCD19A1N.NRT.006
