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- Title
Spatiotemporal Lake Skin Summer Temperature Trends in the Northeast United States.
- Authors
Torbick, Nathan; Ziniti, Beth; Shuang Wu; Linder, Ernst
- Abstract
Lakes have been suggested as an indicator of climate change; however, long-term, systematic records of lake temperature are limited. Satellite remote sensing is capable of supporting lake temperature mapping with the advantage of large-area and systematic observations. The goal of this research application was to assess spatiotemporal trends in lake skin temperature for all lakes over 8 ha across northern New England for the past three decades. Nearly 10 000 Landsat scenes for July, August, and September from 1984 to 2014 were processed using MODTRAN and MERRA parameterizations to generate atmospherically corrected lake skin temperature records. Results show, on average, lakes warmed at a rate of 0.8°C decade-1, with smaller lakes warming at a faster rate. Complementing regression and space--time analyses showed similar results (R² = 0.63) for lake temperature trends and found lakes, on average, are warming faster than daily maximumorminimum air temperature. Nomajor hot spots were found as lake temperature changes were heterogeneous on a local scale and evenly distributed across the region. Maximum and minimum daily temperature, lake size, and elevation were found as significant drivers of lake temperature. This effort provides the first regionally focused and comprehensive spatiotemporal assessment of thousands (n = 3955) of lakes concentrated in one geographic region. The approach is scalable and adaptable to any region for assessing lake temperature trends and potential drivers.
- Subjects
NORTHEASTERN States; WATER temperature; LAKES; SPATIOTEMPORAL processes; ARTIFICIAL satellites; REMOTE sensing; CLIMATE change
- Publication
Earth Interactions, 2016, Vol 20, Issue 25, p1
- ISSN
1087-3562
- Publication type
Article
- DOI
10.1175/EI-D-16-0015.1