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Directory entires that have specified Svalbard as one of the geographic regions for the project/activity and are included in the AMAP, ENVINET, SAON and SEARCH directories. Note that the list of regions is not hierarchical, and there is no relation between regions (e.g. a record tagged with Nunavut may not be tagged with Canada). To see the full list of regions, see the regions list. To browse the catalog based on the originating country (leady party), see the list of countries.
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Stratospheric aerosols like Polar Stratospheric Clouds (PSCs) or volcanic aerosols are investigated by different types of balloon borne sensors in co-operation with the University of Nagoya, Japan, and the University of Wisconsin, Laramie, Wisconsin. The sensors flown are dedicated optilca particle counters (OPC) or backscatter sondes (BKS), respectively.