Ronald Engels schreef op 21 januari 2021 02:22:
Ter informatie Klimaat Forumleden:
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ANTARCTICA SUFFERING COLDEST JANUARY SINCE 1978 + GLOBAL SEA ICE GROWING EXPONENTIALLY
JANUARY 20, 2021. Electroverse.
The start of 2021 in Antarctica has been an unusually chilly one. In fact, the first half of January has been the coldest since 1978, according to data compiled by @LpdlcRamirez and @peikko763 on Twitter.
As of Jan. 19, the month-to-date temperature anomaly across Antarctic is approx. -0.5C, making this the continents coldest first 3-or-so-weeks of Jan. since 1978 (solar minimum of cycle 20), according to research conducted by @peikko163 on Twitter, who also notes that the Southern Hemisphere as a whole is suffering anomalous January chills not seen since 2012.
But this chill of solar minimum isn’t just confined to the Southern Hemisphere either, the mercury ACROSS the planet is tumbling. In one month global temperatures dropped by a whopping 0.26C: from 0.53C above the 1981-2010 avg. in Nov. 2020 to just 0.27C above the avg. in Dec. 2020 (UAH). This drop was in spite of a warming Arctic.
The Sun appears to be sliding into its next Grand Solar Minimum cycle–a multidecadal spell of reduced solar output where the solar disc can be devoid of sunspots for months or even years at a time. The result on Earth’s climate will be one of violent swings between extremes due to a weakening of the jet streams: intense bursts of heat will linger in one area, while a teeth-chattering chill will dominate nearby, and then the regions will “switch” again.
Overall, Earth’s temperature trends colder during a Grand Solar Minimum, as the Sun’s output sinks lower and lower (increased cloud nucleation being one likely forcing).
However, not ALL regions experience the chill: as with the previous GSM (the Maunder Minimum 1645-1715), areas such as the Arctic, Alaska, and S. Greenland/N. Atlantic actually warmed while the rest of the planet cooled — NASA reveals the phenomenon in their Maunder Minimum temperature reconstruction map.
GLOBAL SEA ICE GROWING:
Antarctica’s unusual cold is having an impact on the its sea ice.
After being above average for much of the austral winter and spring, Antarctic sea ice extent has only increased-further into the summer months, to a level now tracking the 1979-1990 average.
In addition, sea ice extent at the south pole’s northern cousin, the Arctic, is also now growing exponentially: after a low starting point, Arctic Sea ice extent increased by 2.71 million km² (1.05 million m²) during the month of December. According to NSIDC data, this was a rate substantially greater than the 1981 to 2010 average December of 1.99 km² (780,000 m²).
Furthermore, between Jan 5 and 17, Arctic sea ice experienced something of extra boon, gaining 966,000 km².
In conclusion, global ice (so Arctic + Antarctic combined) is now greater than anytime since 2016 with the recent exponential growth showing no signs of abating.
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M.v.g. Ronald