Table 1 Correlation between different meteorological variables extracted from weather station observations, ERA5 Land and glacier mass balance estimates for different regions and climatic regimes.

Sl. No	Parameters	Northern Tien Shan (Tuyuksu station)		Humid climatic regions (GM, Poiqu, WN)		Humid climatic regions (GM, Poiqu)		Cold & Dry climatic regions (AK, PG, MA)
Sl. No	Parameters	R²	p	R²	p	R²	p	R²	p
Weather station data
1	Summer temp	0.92	0.004	0.53	0.002	0.77	0.004	0.60	0.00005
2	Summer Precipitation	0.67	0.06	0.52	0.15	0.57	0.23	0.39	0.64
3	Winter Precipitation	0.42	0.15	0.51	0.004	0.58	0.03	0.41	0.17
4	Annual Precipitation	0.59	0.06	0.38	0.15	0.62	0.27	0.44	0.83
ERA5 Land Reanalysis grided climate data
1	Summer temp	0.97	0.009	0.71	0.003	0.69	0.001	0.16	0.10
2	Solid Precipitation	0.12	0.85	0.64	0.0001	0.56	0.001	0.79	0.0007
3	Summer Precipitation	0.01	0.86	0.66	0.3	0.60	0.2	0.19	0.15
4	Winter Precipitation	0.62	0.42	0.66	0.003	0.61	0.001	0.53	0.004
5	Annual Precipitation	0.19	0.78	0.64	0.003	0.56	0.001	0.62	0.02

Bold numbers indicate strong correlation between glacier mass balance and meteorological variables.
GM Gurla Mandhata, WN Western Nyainqentanghla, AK Ak-Shirak, PG Purogangri, MA Muztagh Ata.

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