Table 2.

List of selected predictors in the Ishikari River basin.

Stations	Predictand
	Maximum air temperature (tasmax)	Minimum air temperature (tasmin)	Precipitation (pr)
Horokanai	1000 shum, temp, 500 p	1000 shum, temp, rlds	1000 u, rsds, 700 p, 850 rhum
Pippu	1000 shum, temp, 500 p	1000 shum, temp, rlds	1000 u, rsds, 700 p, 800 p, 850 rhum, 1000 rhum
Kamikawa	1000 shum, temp, 500 p	1000 shum, temp	rsds, 700 p, 800 p, 850 rhum
Asahikawa	1000 shum, temp, 500 p	1000 shum, temp, rlds	1000 u, rsds, 700 p, 850 rhum
Fukagawa	1000 shum, temp, 500 p	1000 shum, temp, rlds	1000 u, rsds, 700 p,850 rhum,
Sorachiyoshino	1000 shum, temp, 500p	1000shum, temp, rlds	1000 u, rsds, 700 p, 800 p, 850 rhum
Takikawa	1000shum, temp, 500 p	1000 shum, temp	1000 u, rsds, 700 p, 850 rhum
Ashibetsu	1000 shum, temp, 500 p	1000 shum, temp	rsds, 700 p, 850 rhum
Furano	1000 shum, temp, 500 p	1000 shum, temp	rsds, 700 p, 850 p, 850 rhum
Iwamizawa	1000 shum, temp, 500 p	1000 shum, temp	1000 u,700 p, 850 p, 850 rhum, prcp
Ikutora	1000 shum, temp, 500 p	1000 shum, temp	1000 u, rsds, 700 p, 850 p, 850 rhum, prcp
Sapporo	1000 shum, temp, 500 p	1000 shum, temp	700 p, 850 p, 7000 rhum, 850 rhum, prcp
Yubari	1000 shum, temp, 500 p	1000 shum, temp	rsds, 700 p, 850 p, 850 rhum

Mean temperature at 2 m (temp), mean sea level pressure (mslp), total precipitation (prcp), surface downwelling longwave flux in air (rlds) and surface downwelling shortwave flux in air (rsds) in monolevel, specific humidity (#_shum), relative humidity (#_rhum), geopotential height (_p), geostrophic air flow velocity (#_f), vorticity (#_z), zonal velocity component (#_u), meridional velocity component (#_v), divergence (#_zh), and wind direction (#_th) under the pressure level of 500 hPa, 700 hPa, 850 hPa, as well as 1000 hPa.