University of Reading METFiDAS weather observations

These data are provided without any guarantee as to their accuracy.
From time to time errors may arise which we will endeavour to correct as quickly as possible.

Quick links
Text information: Current observations
Past two days - graphical: Air temperature and humidity Rainfall
Precipitation rate Present weather and visibility
Pressure Wind
Surface temperatures Soil temperatures under grass
Sunshine Cloud base
Radiation Up/down-ward radiation fluxes
Atmospheric electricity Point discharge current
Other time periods graphical: Past 6 hours The past week
Please note: more observation types will follow soon.
Back to the main Observatory Page

Air temperature and humidity

Key:
Tdry - air (dry bulb) temperature (°C);
Tdew - dew point temperature (°C);
RH - relative humidity (%)

Rainfall

Key:
5minRain - 5-minute rainfall totals (mm);
Daily rain - accumulated rainfall from 0000 UTC (mm)

Precipitation rate

Key:
ppnRate - precipitation rate every 5 minutes (mm/h);

Present weather and visibility

Key:
Visibility - every 5 minutes (km);
Plotted symbols - Automatic Weather Station significant weather symbol every 5 minutes;
Key to plotted symbols (opens in new tab)

Pressure

Key:
Pmsl - mean sea level pressure (hPa)

Wind

Key:
U10 - 10-minute mean wind speed at 5-minute intervals at 10 metres (m/s);
U10max - maximum 3-second gust at 5-minute intervals at 10 metres (m/s);
Dirn10 - 10-minute mean wind direction at 5-minute intervals at 10 metres (deg);
Wind direction shown as '0 degrees' when the wind is calm

Surface temperatures

Key:
Tgrass - temperature at grass-tip level (°C);
Tconc - temperature of the concrete slab surface (°C);
Tsoil - temperature of a bare soil surface (°C);

Soil temperatures under grass

Key:
TSoil - soil temperature at a depth of 5, 10, 20, 30, 50 or 100 cm (°C);

Sunshine

Key:
5minSun - 5-minute sunshine totals (min);
Daily sun - accumulated sunshine from 0000 UTC (h)

Cloud base height

Key:
Base1 - Ceilometer-measured height of lowest cloud layer (m)

Radiation

Key:
Sg - Global solar (shortwave) irradiance (W/m2);
Rn - Net irradiance (W/m2);
G - Ground heat flux density (W/m2)

Up/down-ward radiation fluxes

Key:
LWup - Longwave upward flux (W/m2);
LWdn - Longwave downward flux (W/m2);
SWup - Shortwave upward flux (W/m2);
SWdn - Shortwave downward flux (W/m2)

Atmospheric electricity

Key:
PG - Potential gradient (V/m);
iCP - Corrugated plate vertical atmospheric current (pA);
iFP - Flat plate vertical atmospheric current (pA)

Point discharge current

Key:
PDC - Amplitude of the positive and negative currents (A);

Weather conditions at the University of Reading over the past 6 hours can be found here.
Weather conditions at the University of Reading over the past week can be found here.