Yesterday, NASA’s Goddard Institute of Space Studies (GISS) introduced that the summer season of 2003 was the hottest on record. This 12 months noticed a large warmth wave that swept throughout a lot of the world and was felt in South America, Japan, Europe, and the U.S. This exacerbated lethal wildfires in Canada and Hawaii (predominantly on the island of Maui) and are more likely to have contributed to extreme rainfall in Italy, Greece, and Central Europe. That is the newest in a string of record-setting summers which are the direct results of anthropogenic local weather change.
In line with GISTEMP, the months of June, July, and August mixed had been 0.23 °C (0.41 °F) hotter than another summer season on report and 1.2 °C (2.1 °F) hotter than the seasonal common between 1951 and 1980. Mentioned NASA Administrator Invoice Nelson in a NASA press release:
“Summer time 2023’s record-setting temperatures aren’t only a set of numbers – they end in dire real-world penalties. From sweltering temperatures in Arizona and throughout the nation, to wildfires throughout Canada, and excessive flooding in Europe and Asia, excessive climate is threatening lives and livelihoods around the globe. The impacts of local weather change are a risk to our planet and future generations, threats that NASA and the Biden-Harris Administration are tackling head on.”
This chart reveals the meteorological summer season (June, July, and August) temperature anomalies every year since 1880. Credit score: NASA’s Earth Observatory/Lauren Dauphin
NASA’s temperature report, generally known as GISTEMP, is assembled based mostly on floor air temperature knowledge acquired by tens of 1000’s of meteorological stations worldwide. This combines sea floor temperature knowledge from ship- and buoy-based devices. The uncooked knowledge is then analyzed utilizing strategies that account for native temperature variations and concrete heating results that would in any other case throw off the calculations. Fairly than calculating absolute floor air temperature (SAT), the evaluation calculates temperature anomalies – i.e., how far the temperature has departed from the 1951-1980 base common.
This coincided with exceptionally excessive sea floor temperatures (SST), in accordance with knowledge released in August by the National Oceanic and Atmospheric Administration (NOAA). This pattern turned obvious in March and April when scientists started to note that common temperatures had surpassed the very best ranges recorded by the NOAA. By July, international sea floor temperatures reached 0.99°C (1.78°F) above the common, the fourth consecutive month they had been at report ranges. In line with Josh Willis, a local weather scientist and oceanographer at NASA’s Jet Propulsion Laboratory, this pattern was fueled partly by the return of El Niño and was largely liable for the summer season’s report heat:
“There are quite a lot of issues that have an effect on the world’s sea floor temperatures, however two important elements have pushed them to report heights. Now we have an El Niño growing within the Pacific, and that’s on high of long-term international warming that has been pushing ocean temperatures steadily upward virtually in all places for a century.”
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