Rare heat summers today (with ≈ 100-year return period) show a different evolution of sub-seasonal temperatures than similarly rare summers in pre-industrial climate. Faster drying of soils in cu...

ERA5 is the fifth generation ECMWF reanalysis for the global climate and weather for the past 8 decades. Data is available from 1940 onwards. ERA5 replaces the ERA-Interim reanalysis. Reanalysis combines model data with observations from across the world into a globally complete and consistent dataset using the laws of physics. This principle, called data assimilation, is based on the method used by numerical weather prediction centres, where every so many hours (12 hours at ECMWF) a previous forecast is combined with newly available observations in an optimal way to produce a new best estimate of the state of the atmosphere, called analysis, from which an updated, improved forecast is issued. Reanalysis works in the same way, but at reduced resolution to allow for the provision of a dataset spanning back several decades. Reanalysis does not have the constraint of issuing timely forecasts, so there is more time to collect observations, and when going further back in time, to allow for the ingestion of improved versions of the original observations, which all benefit the quality of the reanalysis product. This catalogue entry provides post-processed ERA5 hourly single-level data aggregated to daily time steps. In addition to the data selection options found on the hourly page, the following options can be selected for the daily statistic calculation: The daily aggregation statistic (daily mean, daily max, daily min, daily sum*) The sub-daily frequency sampling of the original data (1 hour, 3 hours, 6 hours) The option to shift to any local time zone in UTC (no shift means the statistic is computed from UTC+00:00) *The daily sum is only available for the accumulated variables (see ERA5 documentation for more details). Users should be aware that the daily aggregation is calculated during the retrieval process and is not part of a permanently archived dataset. For more details on how the daily statistics are calculated, including demonstrative code, please see the documentation. For more details on the hourly data used to calculate the daily statistics, please refer to the ERA5 hourly single-level data catalogue entry and the documentation found therein.

Rare heat summers today (with ≈ 100-year return period) show a different evolution of sub-seasonal temperatures than similarly rare summers in pre-industrial climate. Faster drying of soils in cu...

Ein überaus heißer und trockener Sommer wie in diesem Jahr kann künftig normal sein. Das zumindest sagt die Klimaforschung. Die Frage ist nur: Wie sieht dann künftig ein Jahrhundertsommer aus? Von Flo...

Rare heat summers today (with ≈ 100-year return period) show a different evolution of sub-seasonal temperatures than similarly rare summers in pre-industrial climate. Faster drying of soils in cu...

For the first time since records began, there was no rain at all for parts of southern England and Wales in July, in a “truly exceptional” month of heat and sunshine

If the Atlantic Meridional Overturning Circulation shut down, the knock-on effects could release hundreds of billions of tonnes of CO2, raising global temperatures even further

The authors use a physiological approach, finding recent extreme heat events had deadly heat stress conditions, particularly for fully exposed older people. Conditions were well below wet-bulb tempera...

A more technical diversion back to 2013

Beaver-induced hydrological change turned wetland into a net carbon sink with an approximate carbon storage of 100 tons per year, according to a comprehensive carbon budget analysis from a beaver wetl...