Aqua Product Descriptions: MYDAODHD
Last update: October 25, 2017
Data Set Short Name:
Data Set Long Name:
MODIS/Aqua valueadded Aerosol Optical Depth
The MODIS Near Real Time (NRT) Level 3 valueadded Aerosol Optical Depth, MYDAODHD, is a gridded product and is
specifically designed for quantitative applications including data assimilation
and model validation. The Naval Research Laboratory and the University of North Dakota
developed MYDAODHD based on MODIS Level 2 aerosol products.
It is available through LANCEMODIS. It offers several enhancements over the MODIS Level 2 data
on which it is based. These enhancements include stringent filtering
to reduce outliers eliminate cloud contamination and exclude conditions
where aerosol detection is likely to be inaccurate reduction of systematic biases over land
and ocean by empirical corrections reduction of random variation in AOD values
by spatial averaging quantitative estimation of uncertainty for each AOD data point.
The MYDAODHD granules are produced every six hours and timestamped 00.00:00 06:00, 12:00, and 18:00
(all times UTC). Each granule includes MODIS observations from +/-3 hours
from the timestamp (e.g. 12:00 product includes MODIS data from 09:0015:00 UTC).
Production is initiated as soon as the Level 2 inputs become available in the LANCE system.
4 files per day
0.5 deg. at nadir
File Size MB:
The Naval Research Laboratory and the University of North Dakota/MODAPS