Climate Change Bulletin October 2023
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Questions and Answers

The Copernicus Climate Change Service is funded by the United Nations.

False (B)

The average sea surface temperature for October over 60°S–60°N was $21.79°C$.

False (B)

El Niño conditions were weaker than those seen during the 1997 and 2015 events.

True (A)

Storm Babet primarily affected Southern Europe, causing heavy flooding.

<p>False (B)</p> Signup and view all the answers

Central and Easternmost Asia, and most of Australia experienced higher than average rainfall in October 2023.

<p>False (B)</p> Signup and view all the answers

The ERA5 dataset uses data from satellites, ships, aircraft, and weather balloons worldwide.

<p>False (B)</p> Signup and view all the answers

The global sea surface temperature data is based on an average taken at a depth of 20cm.

<p>False (B)</p> Signup and view all the answers

NOAA's OISST provides temperature estimates at a depth of about 10m.

<p>False (B)</p> Signup and view all the answers

Sea ice maps and data are derived from a mixture of information from ERA6, EUMETSAT OSI SAF Sea Ice Index v2.1, Sea Ice Concentration CDR/ICDR v2 and fast-track data provided by OSI SAF.

<p>False (B)</p> Signup and view all the answers

The World Meteorological Organization recommends using a 40-year period for calculating climatological averages.

<p>False (B)</p> Signup and view all the answers

Copernicus is a constituent of the European Union's space program, funded by the EU.

<p>True (A)</p> Signup and view all the answers

Copernicus operates via five thematic services: Atmosphere, Marine, Land, Climate Change, Security, and Emergency.

<p>False (B)</p> Signup and view all the answers

The European Centre for Medium-Range Weather Forecasts (ECMWF) operates three services from the EU's Copernicus Earth observation programme.

<p>False (B)</p> Signup and view all the answers

The European Centre for Medium-Range Weather Forecasts (ECMWF) is an independent intergovernmental organization supported by 45 states.

<p>False (B)</p> Signup and view all the answers

Member States can use 35% of the ECMWF's supercomputer capacity for their own purposes.

<p>False (B)</p> Signup and view all the answers

ECMWF's offices are located in the UK, Italy and Spain.

<p>False (B)</p> Signup and view all the answers

Study Notes

Copernicus Climate Change Service (C3S)

  • C3S, implemented by ECMWF, publishes monthly climate bulletins.
  • Bulletins cover global surface air and sea temperatures, sea ice, and hydrology.
  • Data analysis uses ERA5 dataset, combining billions of measurements from satellites, ships, aircraft, and weather stations.
  • October 2023 saw record-high average sea surface temperatures (SST) of 20.79°C (60°S–60°N).
  • El Niño conditions intensified, but remained below 1997/2015 levels.

European Precipitation Patterns (October 2023)

  • Europe saw above-average precipitation, with storms (Babet, Aline) causing heavy rainfall and flooding.
  • Other regions with above-average precipitation included portions of North America, the Arabian Peninsula, Central Asia/Siberia, Southeast China, Brazil, New Zealand, and Southern Africa.
  • Conversely, regions like the southern USA, parts of Mexico, central and eastern Asia and the extratropical southern hemisphere (including Australia), experienced drier-than-average conditions, often associated with drought.

Data Sources and Methodology

  • C3S data sourced from ERA5 dataset for temperature and hydrology.
  • Sea ice data is a combination of ERA5 and EUMETSAT OSI SAF.
  • ERA5 SSTs are estimates of ocean temperature at roughly 10 meters deep.
  • C3S uses the 1991-2020 reference period for calculating climatological averages (per WMO).
  • Visualizations for both 1991-2020 and 1981-2010 periods are available.

Copernicus Program (General Information)

  • Copernicus is a European Union Earth observation program, funded by the EU.
  • Divided into six thematic services (Atmosphere, Marine, Land, Climate Change, Security, Emergency).
  • Copernicus provides freely accessible, operational data and services, aiding the understanding of the planet and its environment.
  • Coordinated and managed by the European Commission, implemented with partners like ESA, EUMETSAT, ECMWF, and EU Agencies.

ECMWF (European Centre for Medium-Range Weather Forecasts)

  • ECMWF is an independent intergovernmental organization supporting 35 states.
  • Functions as both a research institute and a 24/7 operational service that produces numerical weather predictions for Member States.
  • ECMWF has offices in the UK, Italy, and Germany.
  • Maintains a supercomputer facility, allowing national meteorological services in member states access to up to 25% of capacity for their use.
  • Additional data, graphics, videos, frequently asked questions regarding temperature monitoring, and details on the data set are available.

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Description

Explore the highlights from the Copernicus Climate Change Service for October 2023. This quiz covers key statistics, including record-high sea surface temperatures and notable precipitation patterns in Europe and other regions. Test your knowledge on the impacts of El Niño and recent weather events affecting various parts of the world.

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