Table 2.

Area-averaged differences of the TEE terms (K Day⁻¹) and air temperature (K) over multiple levels between positive and negative KZI events over the western TP (24.75°N–44.5°N, 60°E–90°E) high mountain area (altitude above 1500 m) in 1979–2016

		500-hPa	300-hPa	70-hPa
Summer (JJA)	$\delta \left(\mathit{ADH}\right)$	0.0365	0.060	− 0.562
	$\delta \left(\mathit{HTAD}\right)$	− 0.0144	− 0.069	0.493
	$\delta \left(\mathit{DH}\right)$	− 0.0221	0.009	0.069
	$\delta \left(T\right)$	0.55	0.77	− 0.99
	$\delta \left(T_{2m}\right)$		0.50
Autumn (SON)	$\delta \left(\mathit{ADH}\right)$	0.119	0.34	− 0.075
	$\delta \left(\mathit{HTAD}\right)$			0.024
	$\delta \left(\mathit{DH}\right)$			0.051
	$\delta \left(T\right)$	0.55	94	− 1.02
	$\delta \left(T_{2m}\right)$		33
Winter (DJF)	$\delta \left(\mathit{ADH}\right)$	0.27	0.49	− 0.512
	$\delta \left(\mathit{HTAD}\right)$	− 0.10	− 0.43	0.477
	$\delta \left(\mathit{DH}\right)$	− 0.17	− 0.06	0.035
	$\delta \left(T\right)$	0.95	1.00	− 1.95
	$\delta \left(T_{2m}\right)$		1.07
Spring (MAM)	$\delta \left(\mathit{ADH}\right)$	0.19	0.34	− 0.190
	$\delta \left(\mathit{HTAD}\right)$			0.194
	$\delta \left(\mathit{DH}\right)$			− 0.04
	$\delta \left(T\right)$	0.63	74	− 1.52
	$\delta \left(T_{2m}\right)$		81

The western TP high mountain area refers to the area with altitude above 1500 m within the area of 24.75°N–44.5°N, 60°E–90°E. The difference of each term is defined as the average for positive KZI events minus that for negative KZI events, which represents the contribution of the term to temperature increases over the western TP related to positive W. Here, the average of the differences of the terms over the western TP high mountain area is used to represent their mean contributions to temperature changes over the western TP. Values below 1500 m are masked out before the averaging. Negative (positive) values at 70 hPa (500 and 300 hPa) are shown in bold, which positively contributing to the lower stratospheric (tropospheric) temperature changes