Table 3 Overview and description of variables.

From: Very High Resolution Projections over Italy under different CMIP5 IPCC scenarios

Long-Name

Short-Name

Units

Description

Correspondent CORDEX variable

2m temperature

T_2M

K

Temperature of air at 2 m above surface

tas

2m dew point temperature

TD_2M

K

Temperature to which the air, at 2 m above the surface, would have to be cooled for saturation to occur

tds

Total precipitation

TOT_PREC

kg m−2

Accumulated liquid and frozen water, comprising rain and snow, that falls to the surface

pr *

U-component of 10m wind

U_10M

m s−1

Eastward component of the 10m wind

uas

V-component of 10m wind

V_10M

m s−1

Northward component of the 10m wind

vas

2m maximum temperature

TMAX_2M

K

Maximum temperature of the air at 2 m above surface

tasmax

2m minimum temperature

TMIN_2M

K

Minimum temperature of the air at 2 m above surface

tasmin

Mean sea level pressure

PMSL

Pa

The pressure (force per unit area) of the atmosphere at the surface

psl

Specific humidity

QV_2M

kg kg-1

The mass fraction of water vapor in (moist) air

huss

Total cloud cover

CLCT

1

Proportion of a grid box covered by cloud; cloud fractions vary from 0 to 1

clt

Surface Evaporation

AEVAP_S

kg m−2

Accumulated amount of water that has evaporated from the surface

evspsbl *

Averaged surface net downward shortwave radiation

ASOB_S

W m−2

Amount of solar radiation (also known as shortwave radiation) that reaches a horizontal plane at the surface (both direct and diffuse) minus the amount reflected by the surface (which is governed by the albedo)

-

Averaged surface net downward longwave radiation

ATHB_S

W m−2

Thermal radiation (also known as longwave or terrestrial radiation) refers to radiation emitted by the atmosphere, clouds and the surface. This parameter is the difference between downward and upward thermal radiation at the surface

-

Surface snow amount

W_SNOW

m

Liquid water equivalent thickness of surface snow amount

snw *

Soil (multi-levels) water content

W_SO

m

Liquid water equivalent thickness of moisture content of soil layer

mrso *

Land-sea fraction

FR_LAND

1

Land Area Fraction

sftlf *

Surface height

HSURF

m

Surface Altitude

orog

  1. * VHR-PRO_IT variable has to be converted to have the same measure unit of the corresponding CMIP5 standard CORDEX variable.