The Fidelity and Uncertainty in Climate data records from Earth Observations consists of new climate datasets from Earth Observation Satellites which have received rigorous treatment of uncertainty informed by the discipline of metrology. The collection datasets include Fundamental Climate Data Records (FCDRs) containing harmonised radiances and [Thematic] Climate Data Records (CDRs) for ensemble sea and lake surface temperature, tropospheric humidity, aerosol optical depth and surface albedo that are widely applicable and metrologically rigorous. The archived FCDRs have a length relevant to climate (>20 years) and can support numerous CDRs. The selected CDRs illustrate new capabilities (e.g. equi-probable ensembles) as well as the benefiting from use of the new FCDRs, resulting in improved stability and traceable uncertainties. Specifically, the data collection contains: harmonised radiances (FCDRs) for the following sensors: Advanced Very High Resolution Radiometer (AVHRR), High Resolution Infrared Radiation Sounder (HIRS), Advanced Microwave Sounding Unit-B (AMSU-B), Microwave Humidy Sounder (MHS) and Meteosat Visible Infra-Red Imager (MVIR); and geophysical datasets with uncertainties.

This dataset contains hourly automatic weather station (AWS) and 15 minute river flow gauging station data from sites in the Plynlimon (Pumlumon) area of upland mid-Wales, representing the headwaters of the Rivers Severn (Hafren) and Wye (Gwy). A range of instrumentation across 6 AWS sites and 10 gauging stations delivered meteorological and river flow data from 1968 to 2010 to explore changing hydrometeorology as part of the long-term Plynlimon catchment monitoring study. The dataset includes: air temperature, temperature depression, Vapour Pressure Deficit (VPD), precipitation, solar radiation, net radiation, wind speed, wind direction, and river flow. Full details about this dataset can be found at https://doi.org/10.5285/a815235d-6ae1-4e5a-b5cd-138455607cd1