COBRA (impact of COmbined iodine and Bromine Release on the Arctic atmosphere) is a UK IPY (International Polar Year) consortium that aims to investigate the release mechanisms of iodine in the Arctic and the potential combined effects of iodine and bromine on its atmosphere. The team measured reactive inorganic halogens (BrO, IO, OIO, I2), O3, Hg, HOx, HCHO, NOx, VOCs and reactive halocarbons from temporary laboratories located on the eastern shore of Hudson Bay, north of Kuujjuarapik, during February-March 2008. Met balloons and O3 sondes were launched daily. COBRA set up an ice camp and flux chamber experiments ~500 m into the bay to directly measure halogen emissions and ozone deposition, and measured physical, chemical and biological characteristics of the sea-ice (and potentially of frost flowers) at different depths. The project is linked with OOTI, which carried out a simultaneous field experiment at Kuujjuarapik.

This dataset contains time series observations of land surface-atmosphere exchanges of sensible heat (H) and latent heat fluxes (LE), together with supporting meteorological and soil physics data obtained at six eddy covariance (EC) flux tower monitoring sites located across England and Wales. The flux monitoring sites include three croplands (two on peat, one on mineral soils), one grassland on peat, one lowland fen under conservation management, and a relatively intact upland raised bog. Data collection started in January 2023 and ended in January 2024, except for one site in Wales which ended in December 2023. Vegetation data was also collected and consist of manual measurements of canopy height, leaf area index , and biomass. This work was supported by the Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCAPE programme delivering National Capability. Full details about this dataset can be found at https://doi.org/10.5285/b50e7291-b668-49bb-8226-f6371e707714

The dataset includes 30-minute observations of land-atmosphere exchange of net ecosystem carbon dioxide exchange and sensible and latent heat measured over two years in a cut and grazed pasture in Yorkshire, UK. Fluxes were measured using the eddy covariance method. Full details about this dataset can be found at https://doi.org/10.5285/c94b7b70-ab7e-4415-9b99-7f4a10e97c1c

This dataset contains 30-minute observations of land-atmosphere exchange of net ecosystem carbon dioxide exchange and sensible and latent heat measured over the growing season of a maize crop grown for bioenergy in Yorkshire, UK. Turbulent fluxes were measured using the micrometeorological eddy covariance method between 02/06/2021 and 10/10/2021. The dataset also includes weather and soil physics measurements. Full details about this dataset can be found at https://doi.org/10.5285/9b6c2393-b751-46b4-b139-71ca09321139

Isoprene flux and concentration measurements made from Auchencorth Moss during the summer of 2015. Isoprene concentrations were measured using a proton transfer reaction mass spectrometer (PTR-MS) and fluxes were calculated using the eddy covariance technique. The dataset includes the supporting meteorology including air temperature, photosynthetically active radiation, wind speed, wind direction, friction velocity, sensible heat flux. Full details about this dataset can be found at https://doi.org/10.5285/f78b0f29-3df4-4a6c-a096-a1c73828b0a0

The dataset includes 30-minute observations of land-atmosphere exchange of net ecosystem carbon dioxide exchange and sensible and latent heat measured over two years in a cropland in Yorkshire, UK. Fluxes were measured using the eddy covariance method. Full details about this dataset can be found at https://doi.org/10.5285/11f9dd8a-6dac-40e0-b756-05e1f32171f8

Eddy covariance (EC) observations of surface-atmosphere exchanges of sensible heat and latent heat, momentum and net ecosystem carbon dioxide exchange were measured at thirty minute resolution at three Land Surface Stations in India. The dataset includes ancillary weather and soil physics observations, as well as variables describing atmospheric turbulence and the quality of the turbulent flux observations. Meteorological observations include: the net radiation and its incoming and outgoing short- and long-wave components, air temperature, barometric pressure, relative humidity, wind speed and direction, and rainfall. Soil physics observations include: Soil heat fluxes, soil temperatures and soil volumetric water content. Observations were collected under the Interaction of Convective Organization and Monsoon Precipitation, Atmosphere, Surface and Sea (INCOMPASS) Project between January 2016 and January 2018. Full details about this dataset can be found at https://doi.org/10.5285/78c64025-1f8d-431c-bdeb-e69a5877d2ed