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  • This data resource consists of a nutrient concentration time series for the River Frome at East Stoke, Dorset, gathered between January 2004 and February 2006. Total phosphorus concentration data was gathered for the full duration of the project. Soluble reactive phosphorus, total oxidisable nitrogen and dissolved reactive silicon concentration was only gathered from Jan 2005 until Feb 2006. Sampling interval varied throughout the monitoring period, from a minimum of two samples to day, to eight per day during storm events (with an average of three samples per day throughout the duration of the monitoring period). Samples were taken from the main flow of the river using an automatic water sampler, and analysed using standard colorometric methods, at the CEH Dorset laboratories. Further details of the field and laboratory procedures are outlined in Bowes MJ, Smith JT, Neal C. The value of high resolution nutrient monitoring: a case study of the River Frome, Dorset, UK. Journal of Hydrology 2009; 378: 82-96. Full details about this dataset can be found at

  • These data consist of sets of 3-dimensional gridpoint analyses of the stratosphere which are produced by the Met Office using data from the TIROS Operational Vertical Sounder (TOVS) instruments onboard the NOAA (National Ocean and Atmospheric Administration) operational polar orbiters. TOVS consists of 3 instruments, the Stratospheric Sounding Unit (SSU) the Microwave Sounding Unit (MSU) and the High Resolution Infrared Sounder (HIRS). Daily radiance and geopotential height data are available on a 5 degree latitude / longitude global grid from December 1978 to April 1997. Software is provided to derive potential vorticity. Access permission required so that PI can monitor usage of data.

  • The Dust And Biomass EXperiment, (DABEX), based in Niamey, Niger in early 2006, investigates the radiative effect of dust and biomass aerosols emitted from the Sahara/Sahelian regions. The interaction of dust and biomass over this region has not previously been well-established. The new GERB and SEVERI instruments onboard the geostationary MSG satellite platform provide ideal tools for monitoring the evolution of the dust and biomass plumes. Radiometers onboard the FAAM BAE-146 aircraft in conjunction with surface based sun-photometers will determine the accuracy of the retrieval algorithms in terms of the aerosol optical depth, size distribution, and refractive indices. The main objectives of DABEX are: -to perform high quality in-situ and remote sensing measurements of the optical and physical properties of anthropogenic biomass burning aerosols from sub-Sahelian west Africa; -to perform high quality in-situ and remote sensing measurements of the optical and physical properties of natural mineral dust aerosols from over sub-Sahelian west Africa; -to determine the interaction between the anthropogenic biomass burning aerosols and natural mineral dust aerosols using a combination of chemical, physical and optical measurements; -to provide high quality spectral measurements of the solar and terrestrial radiative effects of both biomass burning aerosol and mineral dust aerosol; -to determine the consistency between in-situ measurements/ satellite and surface-based remote-sensing methods of the effects on the radiation budget of the Earth of the composite biomass and mineral dust aerosols; -to model the effect of the biomass and mineral dust aerosols on a regional and global scale and estimate the impact on the global radiation balance of the Earth/Atmosphere system.

  • Data from the Armagh Observatory, founded in 1790 by Archbishop Richard Robinson. There are around 25 astronomers who are actively studying Stellar Astrophysics, the Sun, Solar System astronomy, and the Earth's climate. As well as astronomical observations various meteorological parameters have been recorded since 1794. The data held at the BADC are daily, mean monthly and seasonal and annual maximum and minimum temperatures from 1844, the 1m and 30 cm depth soil temperatures since 1904, precipitation since 1838 and sunshine daily and mean data produced by Armagh Observatory. If users wish to find data from other areas of work undertaken by the observatory they should visit the Armagh Observatory website.

  • The HADRT data are global radiosonde gridded temperature anomalies at standard levels in the troposphere and in the lower stratosphere from 1958 to July 2004. The data are degree Celsius anomalies from 1970-1990 means. Anomalies are calculated for each of about 200 sonde stations worldwide and grid values derived from these. Several versions of the HadRT data are available. The recommended HadRT product for most purposes is HadRT2.1s. This dataset has been superseded by the HadAT dataset collection, also available from CEDA. These pages are provided for the benefit of existing and past users of HadRT. New and existing users are now encouraged to use the HadAT dataset collection instead.

  • The Cryogenic Limb Array Etalon Spectrometer (CLAES) measured vertical profiles of temperature and concentrations of ozone, methane, water vapour, nitrogen oxides, and other important species, including CFCs, in the stratosphere. CLAES also maps the horizontal and vertical distributions of aerosols in the stratosphere. These measurements are analysed to better understand the photochemical, radiative, and dynamical processes taking place in the ozone layer. CLAES was built by an instrument team based at Lockheed Palo Alto and launched on the Upper Atmosphere Research Satellite (UARS) on 12th September 1991. CLAES had a design lifetime of 18 months, beginning on 1st October 1991 and ceasing operations on 5th May 1993. The Principal Investigator is Dr Aidan E. Roche. CLAES makes measurements of thermal emission from the Earth's limb in a number of spectral regions which are then used to derive stratospheric altitude profiles of temperature, pressure, ozone (O3), water vapour (H2O), methane (CH4), nitrous oxide (N2O), nitrogen oxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), chlorine nitrate (ClONO2), CFCl3, CF2Cl2. Aerosol extinction coefficients are also calculated for each spectral region. Further details of the instrument are given in the BADC help file. The data coverage extends from 80°S to 80°N, but at any one time this is restricted to 34°S to 80°N or 34°N to 80°S. The vertical coverage of the measurements is from the tropopause to the lower mesosphere (10-60km). The range over which retrievals are valid is outlined in the help file. The dataset contains measured global temperature, pressure, O3, H2O, CH4, N2O, NO, NO2, N2O5, HNO3, ClONO2, CFCl3, CF2Cl2 and aerosol extinction measurements. Data are level 3A product (gridded in time and latitude along the satellite track) between 80N - 80S, 10-60 Km, October 1991 - May 1993. This dataset is public.

  • T-REX (Formerly SWRP - Sierra Wave Rotor Project) was a joint American/European project that took measurements of strong gravity wave activity and associated rotor activity beneath the waves in the lee of the Sierra Nevada mountains, California, USA. Measurements were made by three aircraft including the FAAM BAE-146 aircraft and many ground based instruments. The UK partners are the Met Office and the University of Leeds. Motivated by aviation safety issues, the main scientific objectives are to improve the understanding of the atmospheric conditions conducive to strong gravity wave activity, wave induced rotors and gravity wave breaking.

  • This collection of datasets contains Sea Surface Temperature climatologies (GISST, Version 2.3b - This dataset is an updated version of GISST2.2 available on the GOSTAplus CD-Rom) and anomalies (MOHSST6), Night Marine Air temperature climatologies and anomalies (MOHMATN4), Sea Ice coverage (GICE) and Blended MOHSST6-Land data (in collaboration with the Climate Research Unit (CRU). The data available is grouped into five sections: - Global Ocean Surface Temperature (GISST), a set of SST data in monthly 1° area grids, for 1871 to February 2003. This product is now replaced by the HadISST SST operational data. - Global sea-Ice content, (GICE), monthly 1° grids of ice coverage for 1871 to February 2003. This product is now replaced by the HadISST ICE operational data. - Met Office Historical Night Marine Air Temperature Anomalies, (MOHMATN4), monthly 5° grids of marine air temperature anomalies for 1856 to August 2006. - Met Office Historical Sea Surface Temperature Anomalies, (MOHSST6), monthly 5° grids of sea surface temperature anomalies for 1856 to August 2006. Please note that this data has now been superceded by HadSST2 data. - Met Office Blended MOHSST6-Land Surface data from the Climate Research Unit at the University of East Anglia. This data was provided by the Met Office.

  • HiGEM (High Resolution Global Environmental Modelling) is a UK programme in between NERC (Natural Environment Research Council) and the Hadley Centre of the Met Office. The aim is to advance in the fidelity of simulations of the global environment by taking the new Met Office climate model (HadGEM1a) to unprecedented resolutions. The resulting simulations aim to improve our understanding of mechanisms of climate variability and change on timescales of days to centuries.

  • The SAGE II (Stratospheric Aerosol and Gas Experiment II) sensor was launched into a 57 degree inclination orbit aboard the Earth Radiation Budget Satellite (ERBS) in October 1984. During each sunrise and sunset encountered by the orbiting spacecraft, the instrument used the solar occultation technique to measure attenuated solar radiation through the Earth's limb in seven channels centered at wavelengths ranging from 0.385 to 1.02 micrometers. Version 6.1 data are available from October 1984 through July 2000, in the form of index files and spec files, with software to assist processing in IDL. Version 6.2 data continue through to August 2005. The update from 6.1 to 6.2 rectifies an altitude registration problem, and there is an improvement to the water vapour product. More information about the data is available from the SAGE II web site of the NASA Langley Research Center. Version 1 contained SAGE II monthly mean global colour image maps and the relevant gridded data for aerosol extinction at 1020 nm, 525 nm, 453 nm and 385 nm wavelength, ozone mixing ratio, water vapour mixing ratio and relative humidity, nitrogen dioxide mixing ratio at up 14 pressure levels, for the period January 1985 to December 1993. As the original SAGE II measurements were made at geometrical heights, meteorological data from the National Meteorological Center (NMC) were used to determine the actual pressure heights for the SAGE II profile data and also have been used to calculate the relative humidity. For easy reference, the NMC atmospheric temperature, geometrical altitude and tropopause data used in the determination of SAGE II data are also included. Users of the image/data version 1.0 products need to be aware that these meteorological data are not measured by the SAGE II instrument itself.