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What variables are available from the different UKCP09 terrestrial data sources?

Different variables are available from the different data sources in UKCP09. These data sources are:

In detail

Probabilistic projections:

Temperature Variables:

  • Change in mean temperature (°C)
  • Change in mean daily maximum temperature (°C) 
  • Change in mean daily minimum temperature (°C) 
  • Change in temperature of the coolest day (°C) 
  • Change in temperature of the warmest day (°C) 
  • Change in temperature of the coldest night (°C) 
  • Change in temperature of the warmest night (°C) 

Precipitation Variables

  • Change in precipitation (%) 
  • Change in precipitation on the wettest day (%) 

Other Variables

  • Change in mean sea level pressure (hPa) 
  • Change in total cloud (%) 
  • Change in relative humidity (%) 
  • Change in specific humidity (%) 
  • Change in net surface longwave flux (W m–2) 
  • Change in net surface shortwave flux (W m–2) 
  • Change in total downward surface shortwave flux (W m–2) 
  • Change in wind speed (m/s) from the CSV archive only

Weather Generator:

  • Total Precipitation (mm/day)
  • Minimum Temperature (°C)
  • Maximum Temperature (°C)
  • Mean Vapour Pressure (hPa)
  • Relative Humidity (%)
  • Sunshine Hours (hours)
  • Downward Diffuse Radiation (W/m2)
  • Direct Radiation (W/m2)
  • Potential Evapotranspiration (mm/day)

11-member RCM:

  • pstar after timestep
  • specific humidity after timestep
  • snow amount after timestep kg/m2
  • surface temperature after timestep
  • boundary layer depth after timestep
  • net down surface sw flux: sw ts only
  • incoming sw rad flux (toa): all tss
  • outgoing sw rad flux (toa)
  • clear-sky (ii) upward sw flux (toa)
  • clear-sky (ii) down surface sw flux
  • clear-sky (ii) up surface sw flux
  • total downward surface sw flux
  • net down surface lw rad flux
  • total cloud amount in lw radiation
  • outgoing lw rad flux (toa)
  • clear-sky (ii) upward lw flux (toa)
  • downward lw rad flux: surface
  • clear-sky (ii) down surface lw flux
  • ht flux from surf to deep soil lev 1
  • surface & b.layer heat fluxes w/m2
  • x-comp of surf & bl wind stress n/m2
  • y-comp of surf & bl wind stress n/m2
  • surface & bl total moisture flux kg/m2/s
  • wind mixing en'gy flux into sea w/m2
  • 10 m wind u-comp
  • 10 m wind v-comp
  • surface sh flux from sea (gbm) w/m2
  • surface latent heat flux w/m2
  • temperature at 1.5 m
  • specific humidity at 1.5 m
  • relative humidity at 1.5 m
  • 10 metre wind speed m/s
  • canopy conductance m/s
  • potential evaporation rate kg/m2/s
  • panofsky peak gust (m/s)
  • potential evapotranspiration factor1
  • potential evapotranspiration factor2
  • large scale rainfall rate kg/m2/s
  • large scale snowfall rate kg/m2/s
  • convective rainfall rate kg/m2/s
  • convective snowfall rate kg/m2/s
  • total snowfall rate: ls+conv kg/m2/s
  • total precipitation rate kg/m2/s
  • soil moisture content
  • canopy water content
  • soil moisture content in a layer
  • u component of wind on pressure levels
  • v component of wind on pressure levels
  • t on pressure levs u grid. use macro
  • omega on press levs u grid.use macro
  • specif hum;p levs;u grid. use macro
  • geopotential height: pressure levels
  • temperature on pressure levels
  • relative humidity on pressure levels
  • pressure at mean sea level

Spatially Coherent Projections:

The same variables as per the Probabilistic Projections.

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