{"ob_id":862,"uuid":"df1caf8b2e473925944fdd8dd76e098c","title":"HadSST2  - 5x5 deg Monthly Global fields of SST anomalies (1850-2013)","abstract":"The Met Office Hadley Centre's sea surface temperature data set, HadSST2, replaces the Met Office Historical Sea Surface Temperature dataset (MOHSST6) and is a monthly global field of SST (Sea Surface Temperature) on a 5 deg latitude by 5 deg longitude grid from 1850 to August 2013. The data are neither interpolated nor variance adjusted.\r\n\r\nThe SST data are taken from the International Comprehensive Ocean-Atmosphere Data Set, ICOADS, from 1850 to 1997 and from the NCEP-GTS from 1998 to the present. HadSST2 is produced by taking in-situ measurements of SST from ships and buoys, rejecting measurements which which fail quality checks, converting the measurements to anomalies by subtracting climatological values from the measurements, and calculating a robust average of the resulting anomalies on a 5° by 5° degree monthly grid. After gridding the anomalies, bias corrections are applied to remove spurious trends caused by changes in SST measuring practices before 1942. The uncertainties due to under-sampling have been calculated for the gridded monthly data as have the uncertainties on the bias corrections.\r\n\r\nThis dataset include:\r\n- SST anomaly data (HadSST2_SST_1850on.txt.gz)\r\n- 1961-1990 Climatology (HadSST2_climatology_5x5_1961_1990.txt)\r\n- numbers of observations used to calculate the average (HadSST2_nobs_1850on.txt.gz)\r\n- Estimates on the measurement and sampling errors on the SST data (HadSST2_m_and_s_errors_1850on.txt.gz)\r\n- bias-adjusted data using bias adjustments which represent the 97.5 percent and 2.5 percent confidence levels of the estimated errors on the adjustments (HadSST2_97.5_pct_bias_1850on.txt.gz and HadSST2_2.5_pct_bias_1850on.txt.gz).\r\n- Files showing the correction applied to the data e.g.:\r\nHadSST2_bucket_correction_median.txt.gz - the corrections applied to the data 1850-1941\r\nHadSST2_bucket_correction_2.5pc.txt.gz - the lower bound of the 95% confidence range of the uncertainties 1850-1941\r\nHadSST2_bucket_correction_97.5pc.txt.gz - the upper bound of the 95% confidence range of the uncertainties 1850-1941\r\n\r\nA 1 degree version of HadSST2 is also available.\r\n    \r\nData were provided by the Met Office Hadley Centre. Dataset was produced by the Hadley Centre in collaboration with ICOADS.","keywords":"Met Office, Hadley, SST, ocean, temperature","publicationState":"published","dataPublishedTime":"2007-02-02T17:01:36","doiPublishedTime":null,"updateFrequency":"notPlanned","status":"completed","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/863/?format=json","dataPath":"/badc/ukmo-hadsst2/data","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":849337409,"numberOfFiles":22,"fileFormat":"ASCII and NetCDF"},"timePeriod":"https://catalogue.ceda.ac.uk/api/v2/times/3715/?format=json","geographicExtent":"https://catalogue.ceda.ac.uk/api/v2/bboxes/10/?format=json","nonGeographicFlag":false,"phenomena":["https://catalogue.ceda.ac.uk/api/v2/phenomona/25868/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/57349/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/57350/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/57351/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/57352/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/57353/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/57354/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/57355/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/57356/?format=json"],"dataLineage":"HadSST2 was acquired in 2008 by the BADC from the Met Office Hadley Centre and has been routinely updated as is until 2013 at the BADC from the Hadley Centre.","removedDataTime":null,"removedDataReason":"","language":"English","identifier_set":["https://catalogue.ceda.ac.uk/api/v2/identifiers/585/?format=json","https://catalogue.ceda.ac.uk/api/v2/identifiers/8744/?format=json"],"projects":["https://catalogue.ceda.ac.uk/api/v2/projects/13164/?format=json"],"observationcollection_set":["https://catalogue.ceda.ac.uk/api/v2/observationcollections/861/?format=json"],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/2807/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/2812/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/2813/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/2806/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/2809/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/2810/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/2811/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/2808/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/54644/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/148631/?format=json"],"procedureAcquisition":null,"procedureCompositeProcess":null,"procedureComputation":"https://catalogue.ceda.ac.uk/api/v2/computations/864/?format=json","permissions":[{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/2652/?format=json","useLimitation":null,"accessConstraints":null,"accessCategory":"restricted","accessRoles":"hadsst2","label":"restricted: hadsst2 group","licenceURL":"https://artefacts.ceda.ac.uk/licences/specific_licences/ukmo_agreement.pdf","licenceClassifications":"academic"}],"discoveryKeywords":[{"ob_id":1138,"name":"NDGO0003"}]}