Fig. 1: Trends in mean autumn air temperature at 2 m north of 25° N during the periods 1982–2003 and 2004–2018.
From: Increasing terrestrial ecosystem carbon release in response to autumn cooling and warming
a, Trends in autumn (September–November) temperature during 1982–2003. b, Trends in autumn temperature during 2004–2018. c, Trends in mean autumn temperature anomalies during both periods. The air temperature data were obtained from the CRU Time Series 4.0. The black line in c indicates the mean autumn temperature over the whole region north of 25° N (NH), and the blue and red lines indicate the average autumn temperature over the CAs and WAs, respectively. *P < 0.1; **P < 0.05; ***P < 0.01. The black line in b represents the extent of the cooling areas. Maps in a,b were generated using ArcGIS (version 10.7). Copyright © 1995–2019 Esri.
