-
Software for AIRS (Atmospheric Infrared Sounder) deconvolution and
the translation of AIRS to CrIS (Cross-grack Infrared Sounder)
radiances. Methods are described in the AIRS deconvolution paper,
listed in my CV. We have been using
these tools for some time to evaluate AIRS and CrIS simultaneous
nadir overpasses (SNOs). We also have software for deconvolution
and the translation of IASI (Infrared Atmospheric Sounding
Interferometer) to CrIS radiances, a much easier task than the
AIRS translation.
airs_decon and
iasi_decon are
available as GitHub repos.
-
Based in part on the work above we developed CHIRP, a Climate
Hyper-spectral Infrared Product. This is a translation of AIRS,
CrIS, and we hope eventually IASI radiances to a common format, as
part of a long term global climate record. CHIRP takes advantage
of similar spatial sampling, translates AIRS and CrIS radiances to
a common spectral response function, and attempts to remove
inter-satellite biases.
Software
is available as a GitHub repo,
Data is available as
a NASA product at GES DISC, and
a User Guide is
also available at GES DISC.
-
Software to reorganize AIRS L1c data as a tiling in which each tile
has approximately the same number of observations, saved in time
order for that tile. This can be convenient for local or regional
analysis. Source
for the AIRS tiling is available at GitHub. We have the AIRS
tiling as a local product from mission start to a few months ago.
There is a similar tiling for CHIRP, done by JPL using the AIRS
tiling as a prototype, available on AWS with entry point "aws
s3 ls s3://nasa-chirp-tiling".
-
Tools for spectral calibration and analysis of data from pre-launch
thermal vacuum (TVAC) tests of the Cross-track Infrared Sounder
(CrIS), a Fourier transform infrared spectrometer on the NOAA Suomi
NPP and JPSS weather satellites.
Software and summary data are available from GitHub for
J1,
J2,
J3, and
J4.
See the README in the git repos for an overview of the software.
Test reports for J1--J4
are also available.
-
The UMBC verson of the CrIS Calibration Algorithm and Sensor
Testbed (CCAST), software to take CrIS level 0 (telemetery) data to
calibrated radiances. We used this for most of our CrIS tests and
analysis through around 2022, and have periodically reprocessed all
SNPP, J1 and J2 data from the start of their respective missions.
See the README for a list of significant features relative to the
similar NOAA and NASA/UW products.
CCAST is available at
GitHub.
-
A package ``obs_stats'' to do long-span all-obs stats from AIRS and
CrIS SDR and other supporting data, including equal area maps of
mean, variance, PDFs, and trends. See the README files in the top
level and obs_source directories for more details.
obs_stats is
available at GitHub.
-
An early version of a Matlab package for radiative transfer
calculations from compressed tabulated optical depths (a Matlab
version of ``kcarta'', see references in my
CV), along with tools and scripts
for building a database of compressed tabulated optical depths
from HITRAN data.
-
The Radiative Transfer Profile (RTP) package, an HDF 4 data format
and application interface for storage and manipulation of atmospheric
profiles and associated spectra. Also assorted Matlab HDF 4 tools,
including a Matlab RTP interface. RTP is used extensively in our
applications.
RTP is available at
GitHub.
|
|