Accession Number : ADP007326
Title : Growing Season Length and Climatic Variation in Alaska,
Corporate Author : ALASKA UNIV FAIRBANKS
Personal Author(s) : Sharratt, B. S.
Report Date : MAR 1992
Pagination or Media Count : 3
Abstract : The growing season has lengthened in the contiguous United States since 1900, coinciding with increasing northern hemispheric air temperatures. Information on growing season trends is needed in arctic regions where projected increases in air temperature are to be more pronounced. The lengths of the growing season at four locations in Alaska were evaluated for characteristic trends between 1917 and 1988. Freeze dates were determined using minimum temperature criteria of O deg and -3 deg C. A shortening of the season was found at Sitka and lengthening of the season at Talkeetna. The growing season shortened at Juneau and Sitka during the period 1940 to 1970, which corresponded with declining northern hemisphere temperature. Change in the growing season length was apparent in the Alaska temperature record, but the regional tendency for shorter or longer season needs further evaluation.
Descriptors : *ALASKA, *LENGTH, *PLANT GROWTH, *CLIMATE, AIR, ARCTIC REGIONS, HEMISPHERES, NORTHERN HEMISPHERE, RECORDS, REGIONS, SEASONS, TEMPERATURE, UNITED STATES, SYMPOSIA.
Subject Categories : Geography
Agronomy, Horticulture and Aquiculture
Distribution Statement : APPROVED FOR PUBLIC RELEASE