Značke
globalno segrevanje, Kavarna Hayek, klimatske spremembe, podnebne spremembe, YouTube, YouTube kanal Kavarne Hayek
Na YouTube kanalu Kavarne Hayek je objavljena nova epizoda: Leto 2022 je bilo slabo leto za podnebne alarmiste in katastrofike globalnega segrevanja. Marsikaj ni šlo po njihovih »načrtih«.
Na Južnem tečaju imajo rekorden mraz, ledu je več kot kadarkoli. Grenlandska ledena plošča se veča. Severnih medvedov je vse več. Korale na Velikem koralnem grebenu, ki je bil tik pred izumrtjem, zdaj “maščevalno” rastejo. Dodaten ogljikov dioksid v ozračju je povzročil za 14 odstotkov večjo zeleno površino na planetu, kar pomeni, da kmetje lahko pridelajo več hrane, zato bo manj lačnih. Požari v naravi so se zmanjšali za 80 odstotkov glede na povprečje zadnjih petih let. Temperatura se je po koncu male ledene dobe leta 1860 dvignila le za eno do 1,5 stopinje in Zemlja ima zdaj podobno temperaturo kot pred več kot 1000 leti v srednjeveškem obdobju ogrevanja. In še kaj.
Najnovejšo epizodo, ki je bila posneta na Rakitni, si lahko ogledate TUKAJ.
Dosedanje epizode:
Kako deluje progresivna obdavčitev
Zakaj se je potrebno upreti uvedbi centralnobančne digitalne valute (CBDC)?
Kavarna Hayek 
In kot obicajno, ko sem preveril prvo trditev gospoda, ki pise te kolumne, sem ugotovil, da ni resnicna. Gospod trdi naslednje:
Grenlandska ledena plošča se veča.
Resnica pa je seveda drugacna
http://nsidc.org/greenland-today/
POVZETEK
Though recent years have not reached or exceeded the extreme melting totals of 2010, 2012, or 2016, the past two decades continue to have consistently more melting than earlier years.
For the melt season as a whole, ice sheet melting was well above average across the southwest and northeast while slightly below average in the northwest and southeast (Figure 1a). However, much of the above average seasonal melting resulted from an unusually warm September, particularly for the southwestern ice sheet. A major melting event took place at the beginning of September, with another significant melt spike in late September resulting from the remnants of Hurricane Fiona as an extra-tropical cyclone. Another period of above-average melt extent occurred in mid-July.
The 2022 melt season in Greenland overall (April 1 to October 31) had a cumulative total of 22.1 million square kilometers (8.53 million square miles) of melt, placing it at nineteenth highest in the 43-year satellite record (Figure 1b). While this is 18.1 million square kilometers (6.99 million square miles) above the 1981 to 2010 average, it is below the average for the twenty-first century years of 2001 to 2022 by 26.3 million square kilometers (10.2 million square miles). Though recent years have not reached or exceeded the extreme melting totals of 2010, 2012, or 2016, the past two decades continue to have consistently more melting than earlier years.
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Seveda, tudi trditev “Severnih medvedov je vse več” NI RESNICNA
https://www.verifythis.com/article/news/verify/environment-verify/polar-bear-population-thriving-population-rising-claim-misleading-misrepresents-data/536-0eb6146f-fb8c-437a-a97c-59625228187a
Using VERIFIED sources, we break down the state of the polar bear population in the past, the recent status of the polar bear population and what’s on the horizon for the species.
Polar bears’ past — late 20th century
Back in the 1960s, polar bears were on the verge of extinction thanks to overhunting. Although the exact number of polar bears in the wild was unknown and estimates were therefore even less precise than they are today — Derocher said that modern surveying techniques weren’t developed until the 1970s and 1980s — the estimates from the time put the global polar bear population at 5,000 to 10,000.
In 1973, there was an agreement between the five Arctic countries where polar bears live — Canada, the Soviet Union, Norway, Greenland (Denmark) and the U.S. — to make local polar bear hunting sustainable.
“As that hunting pressure was reduced and managed more effectively around the Arctic, the number [of polar bears] increased,” Whiteman said. “And so between I would say the 60s and the 90s, polar bears were absolutely a conservation success story.”
But that success story was three decades ago, and biologists don’t believe polar bears are still in their post-hunting regulation population boom.
“I think that most populations that were overharvested have already sort of plateaued at whatever level they’re going to be at,” Derocher explained.
Polar bears’ present — From 2000 to today
Even today, the exact number of polar bears around the globe is unknown, but estimates are at least much better than they were just 10 years ago.
Instead of looking at polar bears as a single global population, today’s researchers track polar bears in 19 distinct sub-populations, each within a separate region of the Arctic. These sub-populations all face unique conditions that affect polar bears differently, Derocher said. So because scientists research and track each region of polar bears individually, they can get insight into which parts of the Arctic polar bears are doing the best, and which parts they’re doing the worst.
Of the 19 sub-populations, 10 lack enough data for scientists to determine population trends, according to a map from Polar Bears International. Three populations are in decline, four are stable and two are on the rise.
The 10 data-deficient sub-populations all live in regions with little infrastructure and particularly harsh conditions, such as the Siberian coast and east Greenland. Derocher said scientists still try to make their best guess at the polar bear numbers in these regions, often using the health of the regional sea ice as indicators. But it’s still the equivalent of “hand waving,” according to Whiteman.
Still, scientists attempt to put together a global polar bear population. The World Wildlife Fund (WWF) says IUCN scientists currently estimate there are 22,000 to 31,000 polar bears worldwide, or approximately 26,000.
That’s higher than the 20,000 to 25,000 polar bears the IUCN estimated about 10 years ago. The change doesn’t reflect an increase in the number of polar bears, the WWF explains. Instead, it’s the result of recent improvements to surveying some of the sub-populations of polar bears, particularly in data-deficient regions.
Based on the data they do have, both Whiteman and Derocher estimate that the global polar bear population is currently in a slight decline, or stable at best. But proclamations that polar bears are definitely increasing or definitely declining in total number should be treated with skepticism, at least for now, Whiteman said.
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