1. Sea Ice Remote Concentration charts from AMSR-E 89 GHz data
08/09/06
Sea Ice Remote Concentration charts from AMSR-E 89 GHz data
 Georg Heygster Institute of Environmental Physics, University of Bremen
Arctic ROOS founding meeting Lulea, 18 – 19 December 2007
(Updated version of presentation at Arctic Goos planning meeting
September 2006

2. Overview Why Remote Sensing of sea ice? Outline of algorithm
08/09/06
Overview
Why Remote Sensing of sea ice?
Outline of algorithm
Operational applications
Conclusions and outlook

3. 1. Motivation High resolution sea ice information in NRT needed at
08/09/06
1. Motivation
High resolution sea ice information in NRT needed at
Low ice concentrations C for navigation
High ice concentrations C for NWP: heat transfer ~ (1-C)

4. 2. ASI (ARTIST Sea Ice) algorithm
08/09/06
2. ASI (ARTIST Sea Ice) algorithm
Svendsen et al. (1987): Use polarization differences near 90 GHz:
High for OW
Low for all ice types
Similarly low

5. 3. Results – Hemispheres (www.iup.uni-bremen.de)
08/09/06
3. Results – Hemispheres (
These maps use the NIC color table

6. Results – Hemispheres (www.iupuni-bremen.de)
08/09/06
Results – Hemispheres (
The more intuitive blue-black-white color tale, preferred by most users.

7. Daily regional maps Arctic: Antarctic: North West passage Scotia Sea
08/09/06
Daily regional maps
Arctic:
North West passage
Smith Sound
Greenland Sea
Svalbard
Arctichesky
New Siberian Islands
Other:
Baltic Sea
Caspian Sea
Sea of Okhotskh
Polarstern
Antarctic:
Scotia Sea
Peninsula
Weddell Sea
Neumayer
Ross Sea
McMurdo
Amudsen
Can be enlarged!
Special interest in Caspian and Okhotsk (oil exploration)

8. Service for R/V Polarstern
08/09/06

9. 08/09/06

10. Web page – Usage statistics
08/09/06
Web page – Usage statistics
Growth in use:
hits files pages GB sites
April 2005: Per day Total
Nov 2007:
Increase factor:

11. 7. Conclusions and Outlook
08/09/06
7. Conclusions and Outlook
Daily data available at
Good coincidence with MODIS and Polarstern observations
Service continuously updated and stabilized
Continued under
ESA/EU GMES project Polar View
EU IP DAMOCLES, Developing Arctic Modelling and Observing Capabilites for Long-term Environment Studies (science)
Support offered to GOOS/IPY activities: Provide
daily NRT sea ice charts
additional maps for user-specified regions
time series of historical data