Ymer-80, satellites, arctic sea ice and weather.

Type: Report
Series: RO 2
Author: Thomas Thompson


During the arctic expedition YMER-80 which took place in the area north of Svalbard between northeast Greenland and Frans Josephs Land satellite information was received onboard as an important aid in weather and sea ice surveillance. A satellits receiving station made it possible to receive images directly onboard from the NOAA weather satellrres. These APT images proved to be very valuable for the weather analyses but for sea ice mapping the resolution, geometrically as well as radiometrically, proved to be a little to coarce to be of real use in the the daily operations planning. High resolution LANDSAT images were received by radio from the receiving station in Kiruna but the limited areal coverage if these images together with the quality degradation in the transmission limited their operational usefullness.
Multispectral processing of the full resolution NOAA, AVHRR data proved however that such data can give considerable details about the ice and therefore be of great value for the daily operetions of an expedition like YMER- 80. The report shows examples of NOAA and LANDSAT images received onboard as well as full resolution images processed after the the expedition was completed.