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5 February: a study published in Nature Climate Change, based on 300 years of ocean mixed-layer temperature records preserved in sclerosponge skeletons, concluded that modern global warming began in the 1860s (over 80 years earlier than indicated by sea surface temperature records) and was already 1.7 °C above pre-industrial levels by 2020—a ...
10 January: a summary from the Copernicus Climate Change Service stated that 2024 was the warmest year since records began in 1850, with an average global surface temperature reaching 1.6 °C above pre-industrial levels, surpassing for the first time the 1.5 °C warming target set by the Paris Agreement.
This is because ocean warming increases near-surface stratification, subsurface layer is still in equilibrium with the colder climate. This causes the surface amplification to be stronger than older models predicted. [33] An instrument carried by the SAC-D satellite Aquarius, launched in June 2011, measured global sea surface salinity. [34] [35]
Toggle Working Group 1 report (physical science basis) subsection ... food security, water ... have unequivocally caused global warming, with global surface ...
World leaders are meeting in Paris this month in what amounts to a last-ditch effort to avert the worst ravages of climate change. Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades.
Some climate change effects: wildfire caused by heat and dryness, bleached coral caused by ocean acidification and heating, environmental migration caused by desertification, and coastal flooding caused by storms and sea level rise. Effects of climate change are well documented and growing for Earth's natural environment and human societies. Changes to the climate system include an overall ...
The United Nations' Intergovernmental Panel on Climate Change's (IPCC) Special Report on Climate Change and Land (SRCCL), also known as the "Special Report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems", [1] [2] is a landmark study from 2019 by 107 experts from 52 countries.
The scientific consensus is that global food security will change relatively little in the near-term. 720 million to 811 million people were undernourished in 2021, with around 200,000 people being at a catastrophic level of food insecurity. [12] Climate change is expected to add an additional 8 to 80 million people who are at risk of hunger by ...