1. OpenADDE Access to Data at Direct Broadcast Sites
David Santek
University of Wisconsin-Madison

2. Overview Internet access through client/server software Not ftp
Not broadcast: data available on demand
Data access to MODIS Level 1b, Level 2 products, AIRS Level 1b, AMSR-E
Remote sites

3. McIDAS Man computer Interactive Data Access System
Meteorological data visualization system
Developed 30 years ago to track clouds from the new geostationary satellites
Users worldwide
Integrates many type of meteorological data
ADDE servers are used for data access

4. ADDE Servers Abstract Data Distribution Environment
In use for nearly 10 years
Sectorizing of geographic coverage and bands [browse of 1 band is 2% of total file]
Compressed transmission
Private TCP/IP through registered port 112
Variety of clients can access the servers
All data returned in common format: not the stored format.

5. ADDE Servers McIDAS format: Image, grid, point, text
netCDF as grid and point
HDF as point
MODIS Level 1b and products as images
AIRS Level 1b
AMSR-E Level 1b
Radar
Meteosat 8 [MSG]
Grib

6. inetd Data Flow stratus.ssec.wisc.edu MCTABLE.TXT RESOLV.SRV
Group IP Address
AMSR stratus.ssec.wisc.edu
RESOLV.SRV
Datset Name File Type Location
AMSR/L1B HDF4 /home3/pwinds/…
inetd
IMGDISP AMSR/L1B BAND=13 STATION=DCA
MCSERV
AGETSERV
AMSRAGET
MCSERV

7. ADDE Clients McIDAS-X McIDAS-Lite IDV [Integrated Data Viewer] Matlab
IDL

8. McIDAS-X

9. McIDAS-Lite

10. IDV

11. Matlab import edu.wisc.ssec.mcidas.* a=AreaFile(‘adde://image?’);
b= getData(a);
c=squeeze(b);
imagesc(c);

12. IDL

13. Remote Sites – MODIS Level 1b
NOAA bentpipe
GSFC DAAC
Kiruna, Sweden DB
Fairbanks, Alaska DB
University of South Florida DB
MARS DB, Benevento, Italy
AADS [Masuoka]

14. Links OpenADDE McIDAS-X McIDAS-Lite
McIDAS-X
McIDAS-Lite
VisAD [jar file needed for Matlab and IDL]
IDV