b8efacd7-c849-40e1-a2d8-5c8355e95179 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-13T16:24:09 UK GEMINI 2.3 OSGB 1936 / British National Grid Surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a data from Blelham Tarn, UK, 2024 2025-07-08 publication https://catalogue.ceh.ac.uk/id/b8efacd7-c849-40e1-a2d8-5c8355e95179 10.5285/b8efacd7-c849-40e1-a2d8-5c8355e95179 doi: Feuchtmayr, H., Dodd, B.A., Guyatt, H., Hunt, A.G., Le Quesne, K., McShane, G., Moorhouse, H., Rankin, G., Rhodes, G., Thackeray, S.J. (2025). Surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a data from Blelham Tarn, UK, 2024. NERC EDS Environmental Information Data Centre 10.5285/b8efacd7-c849-40e1-a2d8-5c8355e95179 This is part of an ongoing long-term monitoring dataset of surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a from fortnightly sampling at Blelham Tarn in Cumbria, England, that began in 1945 for some variables. The data have been collected by the UK Centre for Ecology & Hydrology (UKCEH). The data available to download comprise surface temperature (TEMP) in degree Celsius, surface oxygen saturation (OXYG) in % air-saturation, Secchi depth (SECC) in metres, alkalinity (ALKA) in µg per litre as CaCO3 and pH. Total ammoniacal nitrogen (NH4N), total oxidised nitrogen (TON), soluble reactive phosphate (PO4P), total phosphorus (TOTP), dissolved reactive silicon expressed as SiO2 (SIO2) and phytoplankton chlorophyll a (TOCA) are all given in µg per litre. Water samples are based on a sample integrated from 0 to 5 m. Water chemistry values below the detection limit, are indicated by a < sign in the column titled ‘sign(if<LOD)’. Measurements are made from a boat at a marked location (buoy) at the deepest part of the lake. When it was not possible to visit the buoy, samples were taken from the shore along with surface temperature and oxygen measurements. Water samples were not integrated on these occasions, marked as Flag 2.All data are from January 2024 until the end of 2024. Full details about this dataset can be found at https://doi.org/10.5285/b8efacd7-c849-40e1-a2d8-5c8355e95179 Feuchtmayr, H. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk pointOfContact Feuchtmayr, H. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk https://orcid.org/0000-0002-2028-4843 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Dodd, B.A. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Guyatt, H. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Hunt, A.G. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Le Quesne, K. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author McShane, G. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Moorhouse, H. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Rankin, G. UK Centre for Ecology & Hydrology rankingeorge89@gmail.com author Rhodes, G. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Thackeray, S.J. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author UK Centre for Ecology & Hydrology EMAIL NOT PROVIDED owner NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC EDS Environmental Information Data Centre info@eidc.ac.uk publisher Environmental Monitoring Facilities theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication dissolved oxygen freshwater monitoring phytoplankton GEMET - Concepts, version 4.1.3 2019-01-28 creation Climate and climate change Environmental survey Water quality otherRestrictions no limitations otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: Feuchtmayr, H., Dodd, B.A., Guyatt, H., Hunt, A.G., Le Quesne, K., McShane, G., Moorhouse, H., Rankin, G., Rhodes, G., Thackeray, S.J. (2025). Surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a data from Blelham Tarn, UK, 2024. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/b8efacd7-c849-40e1-a2d8-5c8355e95179 textTable English utf8 environment inlandWaters biota 2024-01-01 2024-12-31 -2.983 -2.974 54.394 54.398 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/b8efacd7-c849-40e1-a2d8-5c8355e95179 Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/b8efacd7-c849-40e1-a2d8-5c8355e95179.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Please note that the data presented here are raw data that have not yet been quality-controlled and calibrated. However, data for TEMP, OXYG, SECC, ALKA, pH, PO4P and TOCA has been double entered by different people into excel from field notebooks or laboratory paper record sheets and validated by a database manager. The database manager checked all data visually (line graphs). Missing data are due to weather conditions, equipment limitations, or staff shortages.