Analysis of water temperature variability of Arctic lakes using Landsat-8 data

Lake surface temperature (LST) is a significant indicator of lake physical states and energy fluxes. This paper integrates multi-dates Landsat 8 thermal data with extensive in situ measurements to retrieve LST of Alaska lakes, and analyses temperature patterns across spatial scales, intra and inter-lakes. Our analysis shows that inside a lake, LST is relatively homogeneous and largely isothermal under strong wind, while larger temperature difference may exist during calm days. Warmer or cooler temperature gradients along wind direction are found for both coastal and inland lakes. At regional scale, small, deep lakes and lakes in inland and/or southern latitude are more likely to have higher mean temperatures across western ACP during summer season.