RRes
e-RA: the electronic Rothamsted Archive
Rothamsted

Rothamsted Weather data available in 'Rothmet'

Daily meteorological data recorded at Rothamsted, Harpenden, Hertfordshire available from e-RA. Hourly data for Rothamsted from 2004 is available from the e-RA Curators.

Back to Met Data main page

Variable

Units

Description

Air temperature

TMAX degrees C Maximum temperature, 1878-current date
TMIN degrees C Minimum temperature, 1878-current date
WETB degrees C Wet bulb temperature, 1915-January 2014
DRYB degrees C Dry bulb temperature, 1915-current date
DEWP degrees C Dew point 1915-current date (derived from DRYB & WETB until 2013, derived from DRYB & RELH since 2014)
GRSMIN degrees C Grass minimum temperature, 1909-current date

Soil temperature under grass

G10T degrees C Soil temperature under grass at 10cm, 1931-current date
G20T degrees C Soil temperature under grass at 20cm, 1931-current date
G30T degrees C Soil temperature under grass at 30cm, 1931-97
E30T degrees C Soil temperature under grass at 30cm, 1915-57; 1997-current date
E50T degrees C Soil temperature under grass at 50cm, 1948-current date
E100T degrees C Soil temperature under grass at 100cm, 1945-current date

Soil temperature under bare soil

S10T degrees C Bare soil temperature at 10cm, 1931-current date
S20T degrees C Bare soil temperature at 20cm, 1931-current date
S30T degrees C Bare soil temperature at 30cm, 1931-current date

Rainfall

RAIN mm Rainfall from original 5 inch gauge, 1853-1879; 1914-current date
RAIN5 mm Rainfall from second 5 inch gauge, 1873-1987
RAINL mm Rainfall in the 1/1000th acre rain gauge, 1853-current date
RDUR hr Rainfall duration, 1931-current date

Drainage data

DR20 inches Drainage from drain gauge at 20 inch (51cm) depth, 1870-current date
DR40 inches Drainage from drain gauge at 40 inch (102cm) depth, 1870-current date
DR60 inches Drainage from drain gauge at 60 inch (152cm) depth, 1870-current date

Sunshine

SUN hr Hours of sunshine, 1890-current date

Radiation

RAD J/cm2 Total radiation, 1931-current date
Cloud
CLOUD Cloud cover (in Oktas with 9=Fog) at 0900 GMT, 1915-2007

Wind

WDIR degrees Wind direction at 0900 GMT (0-360 degrees), 1853-current date
WFORCE Wind force in Beaufort scale (0-12) at 0900 GMT, 1915-59
WINDSP m/s Wind speed at 0900 GMT (at 10m), 1960-current date
WINDRUN km Run of Wind 0900 to 0900 GMT (at 2m, see notes), 1946-current date

Diary

DYHAIL Code indicating type of hail, 1960-88; 1998-2007
DYSNOW Code indicating day with snow or sleet, 1960-88; 1998-2007
DYTHUN Code indicating day with thunder, 1960-88; 1998-2007
FOG Code indicating day with fog at 0900 GMT, 1960-78
SNOWL Code indicating whether snow lying, 1960-78
SNOWD mm Total depth of snow, 1960-2007
FSNOWD mm Depth of freshly-fallen snow at 0900 GMT, 1960-78

Other selected fields

RELH % Relative humidity at 0900 GMT 1925-current date (derived from DRYB & WETB until 2013)
BAR mb Barometric pressure, 1915-59; 1977-2003
BAR_MSL mb Air pressure at Mean Sea Level, 1950-77
VAP mb Vapour pressure 1946-current date (derived from DRYB & WETB until 2013, derived from DRYB & RELH since 2014)
VIS Visibility at 0900 GMT (code), 1923-2007
RRes Logo - Back to RRes