Global Warming Update: Record Temperatures in Nov 2023

A significant milestone in global warming was recorded on November 17, 2023. According to the latest data from ERA5, the advanced climate reanalysis program run by the European Centre for Medium-Range Weather Forecasts (ECMWF), this day marked the first instance of global temperatures crossing 2°C above pre-industrial levels.

As we gear up for the COP28 conference set to commence in Dubai, UAE, on November 30, this data underlines the urgency of the climate crisis we are facing.

Deciphering the ERA5 Climate Data: Unprecedented Temperature Anomolies

The ERA5 dataset revealed that on November 17, global air temperature escalated to 2.07°C above the pre-industrial average, measured between 1850 and 1900, before the widespread adoption of fossil fuels. Moreover, provisional data for the following day, November 18, suggested a temperature anomaly of 2.06°C above the pre-industrial level[2].

Additionally, on November 17, the global air temperature stood 1.17°C above the average for the 1991-2020 reference period. These record temperature anomalies have heightened the likelihood of November 2023 being the warmest November ever recorded. 

The ERA5 dataset, released as part of the ERA5T initiative, pre-publishes data with a maximum latency of five days. However, these figures will undergo thorough verification before their final release, following the typical 2-3 month quality control period.

Keeping Track of Rising Temperatures: The C3S Monitoring App

The Copernicus Climate Change Service (C3S) has introduced an innovative application to monitor the escalating global temperatures. The app presents an insightful view of air temperature trends spanning over the past decades up to the present. It employs a simple model with a 30-year linear trend to predict the level of global warming.

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