{"id":6708,"date":"2022-10-19T08:50:41","date_gmt":"2022-10-18T23:50:41","guid":{"rendered":"https:\/\/www.arc.hokudai.ac.jp\/?p=6708"},"modified":"2022-10-19T09:13:52","modified_gmt":"2022-10-19T00:13:52","slug":"221019-1","status":"publish","type":"post","link":"https:\/\/www.arc.hokudai.ac.jp\/en\/221019-1\/","title":{"rendered":"”Arctic Research Center Monthly Seminar -October-” was held"},"content":{"rendered":"

<\/p>\n

\n\"\" \"\"\n<\/p>\n\n\n\n\n\n
Date & Time<\/td>\nTuesday, October 18, 2022, 15:45-17:00<\/td>\n<\/tr>\n
Place<\/td>\nSeminar Rooms B and C, Sousei Bldg. 4F<\/td>\n<\/tr>\n
Method<\/td>\nHybrid<\/td>\n<\/tr>\nParticipant<\/td>\n16 people (including 11 online)<\/td>\n<\/tr>\n
Lecturer: Hiroshi Hayasaka<\/a> (ARC)
\nPresentation Title:
Fire Weather Conditions in the Arctic Region
\nAbstract:
Fire activity in 288 areas (2.5\u25e6 N \u00d7 10\u25e6 E) in the Arctic region (50\u25e6\u201370\u25e6 N, 0\u25e6\u2013360\u25e6 E) was analyzed using satellite hotspot data (number of HSs = about 4.4 million) from 2002 to 2021. A total of 21 high \ufb01re density areas were selected and their \ufb01re\u2013weather conditions during each active \ufb01re period were analyzed using weather and temperature maps at upper and lower air (over 1820 maps in all). Analysis results of \ufb01re\u2013weather conditions for high \ufb01re density areas in the Arctic region (North Eurasia and North America) are summarized in the below.
\nActive \ufb01res in central and eastern Siberia started by LWM (large westerly meandering) caused by COL detached from Arctic low-pressure systems over the continent (west and central Siberia). Very active \ufb01res on HS peak days in central and eastern Siberia occurred under COH detached from a ridge extending from the Tibet plateau and Arabia. In North America, active \ufb01res also started by LWM caused by COL detached from Arctic low- pressure systems over the Bering Sea and the Gulf of Alaska. However, \ufb01res were not so active until high-pressure systems (COH and ridge) extended from the Great Basin. Analysis results may suggest there are six major \ufb01re regimes in the Arctic region: (1) Eastern Europe, (2) Central and East Siberia (Sakha), (3) Far east high-latitude Siberia (northern Sakha), (4) Far east low-latitude Siberia (southern Khabarovsk), (5) Alaska, and (6) Western Canada.
\nLastly, we should prepare for the next large-scale \ufb01res due to climate change by applying the \ufb01re\u2013weather analysis approach described in this paper. Since we can predict occurrence of active \ufb01res, we could prevent active \ufb01res by making \ufb01re breaks, prescribed \ufb01res, and so on. Our \ufb01ght against wildland \ufb01res is one of the executable ways to mitigate global warming.<\/td>\n<\/tr>\n<\/table>\n

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