The world simply lived by way of the most popular month of the 12 months ever recorded in human historical past.
In response to new knowledge simply launched by the U.S. Nationwide Oceanic and Atmospheric Administration (NOAA), July 2019 has damaged all data for the most popular month, with temperatures 1.71 levels Fahrenheit (zero.95 levels Celsius) above the 20th century common.
NOAA’s calculations affirm the findings of three different not too long ago launched knowledge units. Impartial findings from the Copernicus Local weather Change Service (a European local weather company), Japan Meteorological Company, and Berkeley Earth all present that final month was the warmest on Earth since record-keeping started.
Credit score: NOAA.
In response to knowledge from Berkeley Earth, as an illustration, final month was 2.2 levels Fahrenheit (1.22 levels Celsius) above pre-industrial ranges, simply shy of the Paris Settlement’s aspirational goal of limiting international warming to 1.5 levels.
In a press release following the discharge of the Copernicus knowledge, U.N. Secretary Common António Guterres mentioned, “We now have at all times lived by way of scorching summers. However this isn’t the summer season of our youth. This isn’t your grandfather’s summer season.”
If this 12 months’s unprecedented warmth continues, it can doubtless end in 2015-2019 being the most popular 5 years on report. The earlier hottest month ever recorded was July 2016 — and 9 of the 10 hottest Julys ever have all occurred since 2005.
“July has re-written local weather historical past, with dozens of latest temperature data at native, nationwide and international degree,” Petteri Taalas, secretary common of the World Meteorological Group, mentioned in a press release earlier this month.
An annotated map of the world displaying notable local weather occasions that occurred world wide in July 2019. For particulars, see the quick bulleted listing under in our story (NOAA)
Certainly, the summer season of 2019 will likely be remembered for Arctic fires, melting Antarctic sea ice, and harmful warmth waves throughout a number of continents.
Iceland, as an illustration, formally misplaced its first glacier to local weather change. Scientists will likely be putting in a plaque this month to commemorate the sombre milestone. It reads: “Within the subsequent 200 years all our glaciers are anticipated to observe the identical path. This monument is to acknowledge that we all know what is going on and what must be finished. Solely if we did it.”
And over the course of July, Greenland’s ice sheet melted dramatically — 197 billion tons of water from the glaciers flowed into the North Atlantic. This is sufficient to increase international sea ranges by zero.02 inches (zero.5 millimeters).
These occasions observe final 12 months’s summer season which was equally full of uncommon however devastating late-season hurricanes and historic, lethal wildfires — all developments scientists say could be anticipated in a warming world.