Variables

Units are as displayed on the boards. Map values are daily: means for states and temperatures, totals for fluxes such as precipitation and runoff.

Forcing (downscaled weather)

Layer	Unit	Daily value	Notes
Temperature	°C	mean	2 m air temperature
Precipitation	mm	total	rain + snow, as water
Rainfall	mm	total	liquid part
Snowfall	cm	total	fresh-snow depth
Direct SW	W/m²	mean	direct sunshine on the slope, terrain shading included
Diffuse SW	W/m²	mean	diffuse sky radiation, scaled by sky view
Longwave	W/m²	mean	incoming thermal radiation
Wind Speed	m/s	mean	not gusts; 20–30 % low
Relative Humidity	%	mean
Pressure	hPa	mean	surface pressure

Model (snowpack)

Layer	Unit	Daily value	Notes
SWE	mm	mean	1 mm = 1 kg m⁻² of water
Snow Depth	cm	mean
Runoff	mm	total	melt + rain leaving the snowpack or bare ground
Snowmelt	mm	total	melt part of runoff
Albedo	–	mean	0–1
Surface Temp	°C	mean	snow or ground surface
Soil Temp	°C	mean	shallow soil (0.1–0.3 m)

Satellite

Layer	Unit	Notes
MODIS fSCA	0–1	MOD10A1F, cloud-gap-filled, per terrain unit
Model fSCA	0–1	model snow cover fraction
Model-DA fSCA	0–1	after data assimilation
Satellite image	–	Sentinel-2 true colour

Anomalies

<Layer> anomaly, in units of the usual range (IQR, here q95 − q05), from −3 to +3. Within ±0.5 is normal. Available for SWE, snow depth, runoff, albedo, surface and soil temperature, and all forcing layers. See Anomalies.

Ensemble

Layer	Unit	Notes
Snowfall / Precipitation / Temperature P10, P50, P90	as above	hourly percentiles across members
Snow accum Nd P10/P50/P90	cm	new snow over the next 1, 3, 5 or 10 days
Snowfall probability	0–1	share of members with snowfall