Hansen, Sato, and Ruedy reported in mid-August 2023 that global temperature in June and July (Fig. 1) shot far above the prior records for those months for the 140 years of good instrumental data.
Fig. 1. Global temperature (relative to 1880-1920 mean for each month)
for the 1997-98, 2015-16 and 2023-24 El Ninos. The impact of El Nino
on global temperature usually peaks early in the year (El Nino Peak Year)
following the year in which the El Nino originated.
Early indications are that warming exceeds expectation based on only the long-term trend due to increasing greenhouse gases (GHGs) plus the emerging El Nino. Three additional mechanisms will have a near-term effect, with a result that the 12-month mean global temperature likely will pierce the 1.5°C warming level before this time next year. Uncertainties in present analyses draw attention to the inadequacy of and the precarious state of crucial global observations.
Read on. Excellent article.
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