EuroGOOS Arctic Task Team Workshop September 2006 Satellite data portals for Arctic monitoring Stein Sandven Nansen Environmental and Remote Sensing Center
EuroGOOS Arctic Task Team Workshop September 2006 Satellite sensors
EuroGOOS Arctic Task Team Workshop September 2006 Near Real Time (NRT) versus Seasonal and Long-term (SLT) monitoring NRT: daily updated products, short delivery time, support operational users, assimilation in forecasting models SLT: weekly - monthly products, accumulation of time series, seasonal and interannual variability, requirements to accuracy rather than short delivery time
EuroGOOS Arctic Task Team Workshop September 2006 Examples of portals by the Arctic Task Team OSI SAF: Univ. Bremen: DMI: DTU/DCRS: Met.no: Ifremer: ftp://ftp.ifremer.fr/ifremer/cersat/products/gridded/psi-drift/ AARI: NERSC: many other portals providing satellite data and derived products
EuroGOOS Arctic Task Team Workshop September 2006 Sea ice monitoring from microwave satellites: seasonal variability and trends 100% 90% 80% 70% 60% 50% 40% 30% 15% water land water land Ref. O. M. Johannessen, 2004 Arctic ice extent
EuroGOOS Arctic Task Team Workshop September Daily regional ice maps from AMSR-E Arctic: North West passage Smith Sound Greenland Sea Svalbard Antarctic: Peninsula Ross Sea Scotia Sea Other: Baltic Sea Caspian Sea Sea of Okhotskh Polarstern Provided by University of Bremen
EuroGOOS Arctic Task Team Workshop September 2006 ESA rolling archive for ASAR images in the Arctic Stripes of ASAR images for August 2006 by Kiruna ground station Green = Wide Swath Mode (WSM) Red = Image Mode Medium (IMM) Blue = Alternating Polarisation Mode (APM)
NCEP wind field with standard resolution (modelled fields) Example: High-resolution wind from SAR Increased resolution of wind speed derived from SAR data (observed fields)
EuroGOOS Arctic Task Team Workshop September 2006 Chlorophyll-a concentration from optical images Used to monitor a number of environmental parameters such as Phytoplankton blooms Terrestrial sediments Dissolved organic matter Sea surface temperature Ice edge location Ice flow characteristics Ice leads Icebergs Sea ice snow cover Chlorophyll-a concentrations 10 August, 2006 Courtesy: © ESA.
EuroGOOS Arctic Task Team Workshop September 2006 Example of dissemination: DTU browser for integrating products Courtesy: L. Toudal, DTU
EuroGOOS Arctic Task Team Workshop September 2006 Issues for further work Long-term satellite programmes Retrieval algorithms for geophysical products with focus on higher resolution Develop ice and ocean products for assimilation in models: (e.g. ice concentration, ice drift, ice thickness) Continued and enhanced provision of SAR data for ice- ocean monitoring (ESA rolling archive, SENTINEL and other SAR systems) International Polar Year : intensified field investigation and satellite monitoring