Understanding climate change and land-atmosphere interactions in cold regions: a brief overview of Professor Zhang Tingjun’s academic contributions

doi:10.12006/j.issn.1673-1719.2024.016

Abstract

WANG Kang, MU Cui-Cui, LIU Jia, PENG Xiao-Qing, CAO Bin, ZHENG Lei. Understanding climate change and land-atmosphere interactions in cold regions: a brief overview of Professor Zhang Tingjun’s academic contributions[J]. Climate Change Research, 2024, 20(4): 485-491.

Figures/Tables 5

Fig. 1 (a) Temperature and snowfall anomalies from average at Barrow, Alaska in 1920-1991, (b) temperature anomalies from average in the Alaskan Arctic region (31 stations) in 1921-2017. (Smoothed using a low-pass filter with a cutoff frequency of 0.091)

Fig. 2 Mean annual air temperature trends in the Alaskan Arctic computed from the composite time series of anomalies and also according to CRU, BEST, GISS. (Ranging from 15 years (2001-2015) to the full record length (1921-2015), in 1 year increments. X axis is the onset year used to calculate the trend, the end of period is set to 2015. Horizontal colored dashed lines are corresponding trend values for 1951-2015. This figure shows only significant changes on 90% confidence level)

Fig. 3 Variations of the mean annual air temperature (a) from 1882 to 1995 and soil temperatures at depths of 40 cm (b) in 1898-1995 at Irkutsk, Russia[7]

Fig. 4 Auto-correlations as a function of lag time and depth for June soil temperature anomalies at Kalachinsk [21]

Fig. 5 (a) Map of the main permafrost drilling sites in the Qinghai-Tibet Plateau, (b) reconstructed past surface temperature changes from drilling sites: Heihe PT1, Wudaoliang, Kunlun Pass, and Qaidam Basin. (To facilitate comparison of temperature changes recovered from each borehole, all “present-day temperatures” are set at the 0℃ position) [23]

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