. Ecological investigations of the tundra biome in the Prudhoe Bay region, Alaska . 10 20 Aug 10 . 20 Aug Fig. 5. Daily mean temperature values for air and microrelief positions at 1, 5, and 10 cm depths. temperatures in a standard shelter were obtained by the authors in 1974. Gravel temperatures within a centimeter of the bare surface were recorded between 19 July and 3 September 1974 on pad F. During this period the mean air temperature was °C, and the mean surface temperature of gravel was ° C. Regression of daily average surface and air temperatures yield- ed the equation Y = +
. Ecological investigations of the tundra biome in the Prudhoe Bay region, Alaska . 10 20 Aug 10 . 20 Aug Fig. 5. Daily mean temperature values for air and microrelief positions at 1, 5, and 10 cm depths. temperatures in a standard shelter were obtained by the authors in 1974. Gravel temperatures within a centimeter of the bare surface were recorded between 19 July and 3 September 1974 on pad F. During this period the mean air temperature was °C, and the mean surface temperature of gravel was ° C. Regression of daily average surface and air temperatures yield- ed the equation Y = + where Y is the average daily surface temperature and X is the average daily air temperature. The correla- tion coefficient (r) for this relationship is Based on this analysis, an air-gravel surface temperature relationship is defined. The regres- sion equation can be applied to Prudhoe summer air temperature data as input to thawing and freezing computations and modeling. Conclusions It is apparent that the area adjacent to the road net at Prudhoe can be characterized as an inland coastal climate and is significantly differ- ent than the immediate coastal climate as char- acterized by Barrow, Barter Island, and the summer temperature record at Point Mclntyre. The shift to a true continental temperature regime occurs only a few kilometers inland of the coastline during the summer, although the winter ice cover off the coast reduces tempera- ture differences during the freezing season and provides a near-continental temperature pattern even to the coastal stations. Acknowledgments A large number of people have assisted in the acquisition and processing of these data. Helicopter time was provided by both Alyeska and Atlantic Richfield in servicing the remote stations at Prodhoe Bay. Robert Timmer assisted in servicing these stations in 1972. Funds from the Prudhoe Bay Environmental Subcommittee and BP Alaska, Inc. to the University of Alaska
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