Archives par mot-clé : Ice

Climate Scientists Recant

by K. Richard, April 19, 2018 in NoTricksZone


The Arctic region was the largest contributor to the positive slope in global temperatures in recent decades.

Consequently, the anomalously rapid warming in the Arctic region (that occurred prior to 2005) has been weighted more heavily in recent adjustments to instrumental temperature data (Cowtan and Way, 2013; Karl et al., 2015) so as to erase the 1998-2015 hiatus and instead produce a warming trend.

Meanwhile, other scientists have been busy determining that only about 50% of the warming and sea ice losses for the Arctic region are anthropogenic, or connected to the rise in CO2 concentrations.

The rest of the warming and ice declines can be attributed to unforced natural variability.

Largest High-Arctic Lake Melting From Geothermal Heat, Not Global Warming

by James E. Kamis, April 16, 2018  in ClimateChangeDispatch


Recent changes to Lake Hazen, the world’s largest high-Arctic lake, are from increased heat flow from the area’s known geological features, and not from global warming as per the many alarmist media reports.

Evidence supporting this is abundant and reliable.

Northeast Canada’s Lake Hazen lies adjacent to the world-class Greenland/Iceland mantle plume.

Climate Science Integrity And Intelligence At All Time Record Low

By Tony Heller, April 1, 2018 in TheDeplorableClimSciBlog


With temperatures of -30C and Arctic sea ice nearing its winter maximum, government climate scientists and their useful idiots in the press announce that Arctic sea ice is “near an all time low.”

In the actual Arctic, sea ice extent is increasing, more than

double six months ago, and essentially identical to all recent years (…)


 

Snow Cover, Ice Volume Growth Show Global Climate Is A Lot More Than Just “Surface Temperature”

by P.  Gosselin, March 30, 2018 in NoTricksZone


Although a number of scientists are hollering that 2017 was “among the warmest on record”, we are not seeing any manifestation of this, at least over the northern hemisphere, where ironically snow and ice have shown surprising extents. This year the northern hemisphere winter has been surprisingly cold and brutal over a number of regions.

On March 20, 2018, northern hemisphere snow and ice cover was over 1 standard deviation above normal. Source: Environment Canada.

 

Arctic Wintertime Sea Ice Extent Is Among Lowest On Record (but not THE lowest)

by Anthony Watts, March 23, 2018 in WUWT


From NASA Goddard:

Sea ice in the Arctic grew to its annual maximum extent last week, and joined 2015, 2016 and 2017 as the four lowest maximum extents on record, according to scientists at the NASA-supported National Snow and Ice Data Center (NSIDC) and NASA.

On March 17, the Arctic sea ice cover peaked at 5.59 million square miles (14.48 million square kilometers), making it the second lowest maximum on record, at about 23,200 square miles (60,000 square kilometers) larger than the record low maximum reached on March 7, 2017 (…)

Further Confirmation Southern Ocean Sea Ice is Expanding

by De Santis et al., 2017 in Int.J.RemoteSensing/in CO2Science


Over the past several years, many researchers have examined the spatial extent of sea ice around Antarctica, consistently reporting an increasing trend (see, for example, our reviews on the previously published works of Yuan and Martinson, 2000, Watkins and Simmonds, 2000, Hanna, 2001, Zwally et al., 2002, Vyas et al., 2003, Cavalieri et al., 2003, Liu et al., 2004, Parkinson, 2004, Comiso and Nishio, 2008, Cavalieri and Parkinson, 2008, Turner et al., 2009, Pezza et al., 2012, Reid et al., 2013, Reid et al., 2015, Simmonds, 2015, He et al., 2016 and Comiso et al., 2017). The latest study to confirm this ongoing expanse comes from the South American research team of De Santis et al. (2017).

A Geological Perspective of the Greenland Ice Sheet

by D. Middleton, March 22, 2018 in WUWT


How Does the Recent Melting of the Greenland Ice Sheet Compare to the Early Holocene?

Short answer: Same as it ever was.  Vinther et al., 2009 reconstructed the elevations of four ice core sites over the Holocene.  There has been very little change in elevation of the two interior ice core sites (NGRIP and GRIP), while the two outboard sites (Camp Century and DYE3) have lost 546 and 342 m of ice respectively.

Arctic Ice Volume Growth Surprises As Solar Activity Approaches Near 200-Year Low

by F. Bosse and Prof. F. Vahrenholt, March 20, 2018 in NoTricksZone


The sunspot number for February 2018 was 10.6 and thus was some 30% below the meanfor this time into the cycle. At the moment solar activity is close to quiet.

Just 10 years ago, all the talk was about the Arctic sea ice “death spiral”, with some of scientists hysterically predicting the sea ice would soon disappear altogether in the summertime. Ten years later the scientists are now scratching their heads as sea ice has stabilized and is showing some clear signs of a rebound.

Ice-Free Arctic Fantasies Melting Away As Temperatures Plummet…Sea Ice Mass Grows Impressively

by P. Gosselin, March 14, 2018 in NoTricksZone


German skeptic and weather expert ‘Schneefan’ here writes how climate activist Mark C. Serreze recently announced this year’s sea ice extent was at the smallest all-time area. But since then Arctic temperatures have plummeted and sea ice area has grown to over 14 million square kilometers (…)

Deep Bore Into Antarctica Finds Freezing Ice, Not Melting as Expected

by Douglas Fox, February 16, 2018 in NationalGeographic


Scientists have peered into one of the least-explored swaths of ocean on Earth, a vast region located off the coast of West Antarctica. It is locked beneath a crust of ice larger than Spain and more than 1,000 feet thick, making its waters perpetually dark—and extremely difficult for humans to access. Now, a team of researchers has bored a hole through the ice and sampled the ocean beneath it. Their work could shed light on a poorly understood, but ominous episode in Antarctica’s recent past… (…)

Another New Paper Shows Arctic Sea Ice Has Been INCREASING Overall Since The 1930s

by K.  Richard, March 1, 2018 in NoTricksZone


In his seminal 1982 book Climate, History, and the Modern World, the renown climatologist Dr. H.H. Lamb revealed that sea ice in the subarctic and Arctic regions was much less extensive during the Medieval Warm Period (9th-13th centuries) compared to today.

For example, records indicate that there were decadal and centennial-scale periods without any sea ice invading any of Iceland’s coasts.  These no-ice periods coincided with atmospheric CO2 concentrations of 275 ppm, which is about 130 ppm less than today’s calculated CO2 values.

(…)

Groundbreaking AGW-Undermining Study: Greenland’s Warming, Ice Loss Due To Geothermal Heat

by K. Richard, January 24, 2018 in NoTricksZone


A few years ago, 10 glaciologists publishing in the journal Nature Geoscience asserted that “large parts of the north-central Greenland ice sheet are melting from below” due to high geothermal heat flux forcing (Rogozhina et al., 2016).

In a new paper published in Scientific Reports, 4 more glaciologists (Rysgaardet al., 2018) report that “hot vents” (or hot springs) of geothermally-heated water underneath the Greenland ice sheet can explain localized rising temperatures and glacial melting.

What do the Ice Core Bubbles Really Tell Us?

by Tim Ball, January 20, 2108


The short answer to the question posed in the title to this article is virtually and practically nothing. They definitely do not tell us what is claimed, that is, accurate representation of the state of the atmosphere including temperature in individual years. This is why one of the world’s experts on atmospheric chemistry and ice cores Zbigniew Jaworowski M.D., Ph.D., D.Sc., wrote,

“It was never experimentally demonstrated that ice core records reliably represent the original atmospheric composition.”

(…)