RT Report
T1 State of the Global Climate 2021
A1 World Meteorological Organization, 
A2 De Coning, Estelle
A2 Turkington, Thea
A2 Vitart, Frederic
A2 Robertson, Andrew
A2 Kang, Ryan
A2 Tan, Wee Leng
K1 climate
K1 greenhouse gas
K1 ocean
K1 sea level
K1 marine ecosystem
K1 acidification
K1 glacier
K1 iceberg
K1 snow
K1 permafrost
K1 ozone layer
K1 environmental indicator
K1 temperature
K1 stratosphere
K1 wildfire
K1 heat
K1 precipitation
K1 flood
K1 drought
K1 cyclone
K1 storm
K1 food security
SN 978-92-63-11290-3
YR 2022
FD 2022-05
LK https://wedocs.unep.org/handle/20.500.11822/40033
UL https://wedocs.unep.org/handle/20.500.11822/40033
NO This report provides an update on the observed state of the global climate in 2021 and documents continuing trends in key climate indicators previously highlighted in major scientific assessments. It examines changes in atmospheric composition, including concentrations of greenhouse gases, as well as variations in global annual mean surface temperature, global mean sea level, ocean heat content and ocean acidification. The report also assesses cryospheric indicators such as sea-ice extent and changes in the mass of ice sheets and glaciers. Together, these indicators show that the climate system continues to undergo measurable and persistent change. In addition to physical climate observations, the report reviews the socioeconomic consequences of weather and climate extremes during the year. It highlights the growing vulnerability of populations to climate-related hazards, noting that high-impact events caused economic losses exceeding one hundred billion United States dollars and produced significant disruptions to food security and humanitarian conditions across multiple regions.
DS UN Environment Document Repository
RD Sep 22, 2026