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Private-public partnership helps to evaluate satellite observations of atmospheric CO2 over oceans


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Hiroshi Tanimoto, Director of the Earth System Division at the National Institute for Environmental Studies (NIES), Japan, and Astrid Müller together with their international research team, have developed a new method to evaluate satellite observations of XCO2 over open ocean areas, which are currently inaccessible through established validation network sites. In the new approach, a reference CO2 dataset is formulated by combining cargo ship and passenger aircraft observations which were conducted in cooperation with operators of the private sector.
(Background)
After the Paris Agreement entered into force, commitment to reduce greenhouse gas emissions are being expedited. CO2 is the most important anthropogenically produced greenhouse gas. Emissions due to fossil fuel combustion and cement production have caused an accelerated increase of atmospheric CO2 to more than 410 ppm in 2020 since the 1950s (Dlugokencky and Tans, 2021). High quality and high density ....

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Human-induced climate change caused the northwestern Pacific warming record in August 2020


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IMAGE: Observed sea surface temperatures in August over the northwestern Pacific Ocean. The white boxes are the region focused on in this new study. The COBE SST2 dataset from JMA-MRI is.
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Credit: NIES
August 2020 set new record high sea surface temperatures (SSTs) in the northwestern Pacific Ocean and around the Japan coasts. A new study led by National Institute for Environmental Studies (NIES) researchers revealed that this warming record could not happen without human-induced climate changes.
The northwestern Pacific sea surface becomes warm seasonally around August every year. However, it was unprecedentedly high in August 2020, according to the Japan Meteorological Agency and the National Oceanic and Atmospheric Administration. The extremely high SSTs exceeding 30°C, which lasted until mid-September, may have intensified tropical cyclones such as Typhoon Haisheng, causing severe damages to the East Asian countries. Although huma ....

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