![]() Used in HadIOD as a substitute for ICOADS.2.5.1 from April 2022 onwards (the last monthly update of ICOADS.2.5.1 was expected in March 2022 ). Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. International Comprehensive Ocean-Atmosphere Data Set (ICOADS) Release 2.5, Individual Observations. These data are included from 1850-present and provide sea surface temperature measurements (not salinity) to HadIOD.Īcknowledgement: Research Data Archive/Computational and Information Systems Laboratory/National Center for Atmospheric Research/University Corporation for Atmospheric Research, et al. The primary source of surface ocean measurements in HadIOD. The following sources are used in the reference data files: Observations from several different sources have been ingested into the HadIOD.1.2.0.0 database. These supplementary files could also be used with the reference data files and are linkable via the OB_ID variable. The use of these additional corrections is encouraged and is described in the product user guide. The component of uncertainty explored by these corrections is increasingly important on longer space and time scales (e.g. The HadIOD dataset also includes supplementary files that provide additional sets of bias corrections to help users explore the bias correction uncertainty. The bias corrections used in the reference data files are the same as those used for the HadIOD 'main' files. Because the names used for the bias correction and uncertainty variables in the reference data files differ from the variable names used in the product user guide, the 'File Contents' section below includes a table showing which variable names are equivalent. We would also strongly recommend reading the product user guide available for the HadIOD files which is of relevance here, in particular Section 2 which gives useful general information about HadIOD data and, importantly, describes the HadIOD observation error model and how to work with the bias corrections and uncertainties provided by HadIOD. Information about the reference data files is provided on these webpages. Plots of the number of observations in the files per month for each platform type are shown in 'Figures' below. Note that files may not be available for every platform type each month because of changes in the usage of different platform types over time. At a minimum we try to provide a quality flag and some estimate of uncertainty in each measurement.įor detailed information see 'File contents' below. The files contain several different bias correction and uncertainty variables, it is not possible to specify values for all of these variables for every observation and unspecified values are set to missing data. SSTCCI2_refdata_drifter_cmems_201701.nc.gzĮach file contains the observed data along with HadIOD metadata including bias corrections, measurement uncertainties and quality control decisions for each observation. elephant seals).įiles are named SSTCCI2_refdata_ PLAT-TYPE_ YYYYMM.nc, where YYYY=year, MM=month and PLAT-TYPE=platform type, e.g.: ![]() Platforms selected for the reference dataset are: drifters, voluntary observing ships (ship), Global Tropical Moored Buoy Array (GTMBA), mooring data (excluding GTMBA), bottles, Conductivity-Temperature-Depth casts (CTDs), Mechanical BathyThermographs (MBTs), eXpendable BathyThermographs (XBTs), Argo floats and animal data (these are data from instrumented marine animals, e.g. Each NetCDF file contains monthly SST data from a particular platform type. Data cover 1978-present with new data added with approximately a few months delay. Reference data files are in NetCDF format, the current version is v1.0. Please contact us if you are interested in using these data. ![]() These webpages provide information for those interested in this dataset. SST reference data were initially made available to project users but have subsequently been released to users outside the project on request. The data are officially referred to as the SIRDS ( SST CCI Independent Reference Data Set) reference data. ![]() ![]() The reference data coverage was then extended for C3S (European Union Copernicus Climate Change Service,, C3S_312a Lot 3). The Sea Surface Temperature (SST) reference data extracted from HadIOD.1.2.0.0 (hereafter ‘reference data’) were initially created for the ESA SST CCI II project (European Space Agency Sea Surface Temperature Climate Change Initiative Phase 2, ) for use in validating satellite SST data products. Met Office Hadley Centre observations datasets Met Office Hadley Centre observations datasets ![]()
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