Surface precipitation measurements from the precipitation sensor on the Vaisala WXT510 instrument deployed at the Natural Environment Research Council's (NERC) Mesosphere-Stratosphere-Troposphere (MST) Radar Facility, Capel Dewi, near Aberystwyth in West Wales. These data are available to any registered CEDA user under the UK Open Government Licence. Surface pressure, temperature and humidity data (PTU) from this instrument are also available as a separate dataset within the MST Radar Facility dataset collection. The WXT-510 instrument at the site began operational recording in December 2007 and ceased in January 2015, subsequently being replaced by a Vaisala WXT-520 instrument. The WXT520 data are also available from CEDA as part of the MST Radar Facility's dataset collection. Independent surface meteorological data are also collected from a suite of instruments by a Campbell Scientific CR10 Climate Data Logger. These data are available as a separate dataset within the MST Radar Facility dataset collection.

This dataset collection contains a number of observational datasets (mainly from the NERC funded contribution, but others too) of surface and boundary layer meteorological measurements collected on board the Icebreaker Oden during its voyage for the Arctic Cloud Summer Expedition (ACSE). ACSE was a collaboration between the University of Leeds, the University of Stockholm, and NOAA-CIRES (the Cooperative Institute for Research In Environmental Sciences). ACSE aimed to study the response of Arctic boundary layer cloud to changes in surface conditions in the Arctic Ocean as a working package of the larger Swedish-Russian-US Investigation of Climate, Cryosphere and Carbon interaction (SWERUS-C3) Expedition in Summer 2014. This expedition was a core component to the overall SWERUS-C3 programme and was supported by the Swedish Polar Research Secretariat. ACSE took place during a 3-month cruise of the Swedish Icebreaker Oden from Tromso, Norway to Barrow, Alaska and back over the summer of 2014. During this cruise ACSE scientists measured surface turbulent exchange, boundary layer structure, and cloud properties. Many of the measurements used remote sensing approaches - radar, lidar, and microwave radiometers - to retrieve vertical profiles of the dynamic and microphysical properties of the lower atmosphere and cloud. The UK participation of ACSE was funded by the Natural Environment Research Council (NERC, grant: NE/K011820/1) and involved instrumentation from the Atmospheric Measurement Facility of the UK's National Centre for Atmospheric Science (NCAS AMF). This dataset collection contains data mainy from the UK contribution with some additional data from other institutes also archived to complement the suite of meteorological measurements.

Historic land surface observations data from the Met Office station network. Data are available for the period 1900 to 1999 for daily measurements. Hourly observations are for now available back to January 1985. The dataset comprises daily and hourly weather measurements, hourly wind parameters, max and min air temperatures, soil temperatures, sunshine duration and radiation measurements and hourly and daily rain measurements. This dataset has been SUPERSEDED BY THE NEW MIDAS Land Surface Stations data (1853-current). It has been retained for reference purposes. Users with access to the MIDAS Land surface stations dataset automatically have access to this dataset as well. The daily data are available online from UK stations in 110 UK regions (mainly counties) over the period 1853 to July 2000. The hourly data are for available from stations in the 110 UK regions also covered by the daily data from 1983 to July 2000.