Thomas Achtor

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NOAA ATOVS Sounding Software for the
International Direct Broadcast Community

• Thomas Achtor
• Co-Chair International TOVS Working Group
• Jun Li and Harold Woolf
• UW-Madison, CIMSS

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International TOVS Working Group (ITWG) Activities

• ITWG
• Is a sub group of the Radiation Commission within
  the International Association of Meteorology and
  Atmospheric Physics (IAMAP)
• Serves as an International Forum for Operational
  and Research users of (A)TOVS and other Sounder
  data to exchange information and ideas and
  optimal use of satellite sounder data

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International TOVS Working Group (ITWG) Activities

• ITWG (continued)
• Holds the International (A)TOVS Study Conferences
  every 18 months
• Provides recommendations to guide the directions
  of future research and to influence relevant
  programs of WMO and other agencies (NOAA/NESDIS,
  NASA, EUMETSAT, JMA, CMA)

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International TOVS Working Group (ITWG) Activities

• ITWG (continued)
• Through collaborations, develops and distributes
  software packages for use with Direct Broadcast
  radiance data
• ITPP
• 3I
• AAPP
• IAPP
• ICI

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IAPPInternational ATOVSProcessing Packagev2.01

• Atmospheric Variable Retrieval Software
• for Direct Readout
• from the UW-CIMSS

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IAPP Retrieval

• Developed for Direct Readout and 1-B data
• AAPP Pre-processing (from Eumetsat)
• Uses HIRS/3 and AMSU-A and -B radiances as input
• AMSU is remapped to HIRS/3 FOV
• 3 x 3, 2 x 2, or 1 x 1 fov can be used for
  retrieval
• NetCDF output file

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IAPP Retrieval

• Cloud Detection and Removal
• Bias Adjustment
• Regression Retrieval
• Non-linear, Iterative, Physical Retrieval (Li, et
  al, 1999, 2000)

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IAPP Retrieval Output

• Atmospheric temperature and water vapor mixing
  ratio profiles
• O3, TPWV, BLVW
• Tsk, MW sfc emissivity
• HIRS/3 clear column radiances
• NESDIS AMSU-A climate products

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IAPP ATOVS 500 hPa Temperature Retrievals with
Radiosondes
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AMSU-A 55.5 GHz Channel Hurricane Bonnie, August
25, 1998
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AMSU Temperature Retrieval Anomaly Cross Section
at 29 latitude, August 28, 1998
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IAPP Contacts

• Tom Achtor (acquisition, questions)
• tom.achtor_at_ssec.wisc.edu
• Jun Li (retrieval science)
• jun.li_at_ssec.wisc.edu
• Hal Woolf (IAPP design, setup)
• hal.woolf_at_ssec.wisc.edu
• http//cimss.ssec.wisc.edu/iapp

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Software Packages for Direct Broadcast Data
Processing IMAPP and Future Packages for
NPP/NPOESS
H-L Allen Huang CIMSS/SSEC, University of
Wisconsin-Madison Satellite Direct Readout
Conference for the Americas Miami, Florida 9-13
December 2002 Topics X-band System Receiving
Capability International MODIS AIRS Processing
Package - IMAPP MODIS/AIRS Level 1 2
Products Level 2 Processing Algorithms Processing
Packages for NPP NPOESS
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UW-Madison X-band Receiving Capability
Terra
Aqua
X-band Antenna
MODIS
Coverage
AIRS
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MODIS True Color Image 2001/10/05 1610 Bahamas
and Cuba
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MODIS True Color Image 2001/11/06 1610 Bahamas
and Cuba
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0.66-Red 0.87-Green 11.0-Blue
0.66-Red 0.55-Green 0.45-Blue
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Cloud Mask Product December 12, 2000
Snow
Cirrus
1.38 ?m reflectance
White Cloud, Green Clear
0.66 ?m reflectance
This complex scene over the US plains states
includes snow cover at the top of the image and a
mix of high and low clouds elsewhere in the
image. Note the thin cirrus cloud detected only
in the 1.38 ?m channel. The cloud mask
successfully discriminates clear sky from snow in
this challenging case.
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Total Precipitable Water Product June 2, 2001
MODIS 0.87 ?m
MODIS TPW
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Hurricane Lili, 2 October 2002 Terra MODIS direct
broadcast
MODIS true color image
MODIS total precipitable water vapor
TPW (mm)
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Isobaric Surfaces/Profiles of Temperature 13
October 2002 Terra MODIS direct broadcast
300 hPa
500 hPa
850 hPa
true color image
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Isobaric Surfaces/Profiles of Moisture 13 October
2002 Terra MODIS direct broadcast
300 hPa
500 hPa
850 hPa
true color image
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IMAPP MODIS Products
MODIS L1B True Color (R .67 ?m, G .55 ?m , B
.46 ?m )
Cloud Top Pressure
Cloud Mask
Low Mid High
Cloud Phase
Total Precipitable Water (mm)
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Global Community IMAPP Applications
Real-time IMAPP products placed on the web and
used by the USA National Weather Service as a
forecasting tool. (http//wwwghcc.msfc.nasa.gov/sp
ort/modis_products.html)
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Global Community IMAPP Applications
Scientists at the Plymouth Marine Laboratory in
the UK are using IMAPP to provide cloud
information as part of the CLOUDMAP 2 project (18
September 2002)
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Global AIRS Spectra July 20, 2002
20-July-2002 Ascending LW_Window
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Global AIRS Spectral Images (CO2) Sep. 6, 2002
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Global AIRS Spectral Day/Night Boundary Layer
Temperature Inversion
Land-inversionclear
CR1
Sunglint-desert clear
CR4
Water-inversionclear
CR2
Sunglint-desert clear
CR5
CR3
Sunglint-desert clear
CR6
Land-inversionclear
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Global AIRS Spectral Cloud, Cold Surface,
Upper Level/Boundary Layer Temperature Inversion
CloudDay - Desert
CloudDay - Water
CD4
CD1
Snow/Ice- Inversion/South Pole
CloudDay - Land
CD5
CD2
Cloud-Inversion/South Pole
CloudNight - Inversion
CD6
CD3
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Global AIRS Spectral Cloud Upper Level
Temperature Inversion
CD10
CloudNight - Inversion
CloudNight - Inversion
CD7
CloudDay - Inversion
CD11
CloudNight - Inversion
CD8
CD12
CD9
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Global AIRS Spectral Images (H2O) Sep. 6, 2002
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• IMAPP software was created with these
  requirements
• Portability - IMAPP software has been ported and
  tested on the following UNIX/PC platforms
• SGI MIPS, IRIX 6.5, Sun Ultra, SunOS 5.7,
• IBM RS/6000, AIX 4.3, HP PA-RISC, HP-UX
  B.10.20,
• Intel Pentium Linux 2.2.12-20, Solarisx86 2.5.1
• Easy to install and use
• NCSA HDF4 is the only required toolkit
• Required ancillary data available from
  anonymous ftp site ftp//terra.ssec.wisc.edu/
  pub/terra/ancillary
• Overpasses of arbitrary size can be processed
• MODIS science data products must work using both
  DAAC
• L1B radiances and direct broadcast L1B
  radiances as input
• Compatibility with DAAC operational versions

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• MODIS IMAPP
• Funded by NASA (Dr. Jim Dodge)
• Fosters international compatibility and ease of
  use of the data
• Consists of software to turn direct broadcast
  MODIS and
• eventually AIRS data into useful science
  products. The current
• suite of MODIS products consists of
• Calibrated, navigated 36 channel radiances (L1B)
• Cloud Mask (MOD35)
• Cloud Top Properties (MOD06)
• Cloud top temperature/ height/emissivity/fraction
• Cloud Phase (MOD06)
• Atmospheric Profiles (MOD07)
• Vertical profiles of temperature and moisture at
  20 levels
• Total precipitable water, Precipitable water
  low/high
• Total column ozone
• Stability parameters (Lifted Index, K-Index,
  Total totals)
• Software is freely distributed and available via
  download from
• http//cimss.ssec.wisc.edu/gumley/IMAPP/

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• IMAPP has been successful in providing a portable
  software package for converting direct broadcast
  MODIS data into valuable science products
• CIMSS IMAPP automated processing applications
• MODIS L1B and science product validation
• Testing of MODIS algorithm product changes
• Quick look display for identifying regions of
  spectral
• or meteorological interest
• Real-time support for field experiments
• Known global community MODIS IMAPP applications
• MODIS calibration validation over Lake Tahoe,
  USA
• Providing USA Weather Service forecasters with
• real-time high spatial resolution imagery and
  products
• Aiding the Canadian Ice Service in monitoring
  the
• amount of ice on Hudson Bay for shipping
  concerns
• Supplying cloud information from IMAPP as part
  of
• the European CLOUDMAP 2 project

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Aqua AIRS MODIS Retrieval Examples July 20,
2002, 1915-1920 UTC
AIRS _at_ 14 km (Nadir)
MODIS _at_ 1km (Nadir)
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AIRS/MODIS Co-location Example
Nadir
Scan Angle 49
Scan Angle 23.7
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AIRS/MODIS Co-location Example
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Past, Current and Future International Polar
Orbiting Satellite Processing Package
MODIS AIRS AMSU
NPP/NPOESS CrIS VIIRS ATMS CMIS OMPS Others
IMAPP
INPP
IAPP
ITPP
ATOVS
TOVS
ITPP-International TOVS PP IAPP-International
ATOVS PP IMAPP-International MODIS/AIRS
PP INPP-International NPP/NPOESS PP
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Current and Future International Polar Orbiting
Satellite Processing Package - Summary

• CIMSS/UW will continue to work with government,
  academic, industry partners to support package
  development
• Leveraging with past current research
  operational data processing and algorithm
  development capability
• Adopting/adapting algorithms for efficient and
  accurate level 0 to level 1 data and level 1 to
  level 2 products demonstration
• Provide synergistic data products processing
  options
• Provide regional products to support real-time
  applications
• Provide students, teachers, researchers with
  hand-on data processing, algorithm development,
  and product application educational opportunity

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Countries using MODIS IMAPP
Let us know if you are using IMAPP but we dont
know yet!
http//cimss.ssec.wisc.edu/gumley/IMAPP/