Figure 4
Anthropogenic heat flux (QF) as a residual from regressing turbulent heat fluxes (QH + QE) with available energy (observed Q* - modelled ΔQS) in central Basel for all 2016 cloud-free satellite scenes stratified by season (colours, as Fig. 3d–f) and wind direction (symbols) for: (a) BAES (Basel Aeschenplatz (394330, 5267379)) and (b) BKLI (Basel Klingelbergstrasse (393221, 5268560)) flux towers, with 1:1 line (solid), linear regression best fit line (dashed) and extent of 80% of the data points (dotted lines). Linear regression statistics, a: slope, b: intercept (W m−2), R2, MAE (W m−2), RMSE (W m−2). (c) Relative spatial patterns of the anthropogenic heat flux (QF) in central Basel for January and February 2016, scaled from 0 to 1 (unitless). The river is masked (black). Grid reference is UTM 32 N (EPSG:32632). Map created with QGIS software, version 2.18 (www.qgis.org).
