Figure 1: Relationship between air temperature (Ta) and the temperature difference between surface water and the overlying air (Tw-Ta). | Scientific Reports

Figure 1: Relationship between air temperature (Ta) and the temperature difference between surface water and the overlying air (Tw-Ta).

From: Citizen science shows systematic changes in the temperature difference between air and inland waters with global warming

Figure 1

All temperatures (1355 paired air and water temperatures) were reported from high school students and measured in 11 small ponds, 49 lakes, 22 streams/rivers and at 2 Baltic Sea shore sampling sites across Sweden (panel b) between August 15 and September 30, 2016. The relationship is linear and significant (panel a; R2 = 0.54, p < 0.0001). The orange color indicates an upward sensible heat flux and the blue color when there is a downward sensible heat flux. The Swedish map was created in ARC GIS, version 10.3.1., using a shape file with open data obtained from the Swedish Meteorological and Hydrological Institute (http://www.smhi.se) under the agreement of the licensing terms specified in Creative Commons Attribution 4.0. (https://creativecommons.org/licenses/by/4.0/) The dots in the map and the text were finally modified in Adobe Illustrator version CS6.

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