Media still hyping melting glaciers despite historical context of faster melting in 1930s


By: - Climate DepotJune 23, 2020 9:54 AM with 0 comments

https://www.climatedepot.com/2012/09/28/new-paper-finds-glaciers-in-glacier-national-park-retreated-up-to-6-times-faster-during-the-1930s-than-the-past-40-years-paper-published-in-quaternary-science-reviews/

2012 paper finds glaciers in Glacier National Park retreated up to 6 times faster during the 1930’s than the past 40 years — Paper published in Quaternary Science Reviews

‘Results indicate that alpine glaciers in Glacier National Park advanced and retreated numerous times during the Holocene after the onset of Neoglaciation 6,500 years before the present’ and ‘Retreat from the Little Ice Age maximum was the most dramatic episode of ice retreat in at least the last 1000 years.’

https://hockeyschtick.blogspot.com/2012/09/new-paper-finds-glaciers-in-glacier.html

A new paper published in Quaternary Science Reviews finds that alpine glaciers in Glacier National Park, Montana retreated up to 6 times faster during the 1930’s and 1940’s than over the past 40 years.  The “Multi-proxy study of sediment cores retrieved from lakes below modern glaciers supports the first detailed Neoglacial chronology for Glacier National Park (GNP)” and shows “maximum reconstructed retreat rates [in] 1930” of about 125 meters per year, compared to near zero in ~1975 and about 20 meters/year at the end of the record in ~2005.  The authors report, “Results indicate that alpine glaciers in Glacier National Park advanced and retreated numerous times during the Holocene after the onset of Neoglaciation 6,500 years before the present” and “Retreat from the Little Ice Age maximum was the most dramatic episode of ice retreat in at least the last 1000 years.”

Fig. 8. Relationship between climate, retreat of the Agassiz Glacier, and flux of carbonate in core UKL-1 from AD 1750 to the present. Dashed line shows CaCO3 flux in mg/cm2/yr. Filled gray line illustrates the reconstructed retreat rate of the Agassiz Glacier from its LIA terminal moraine, calculated from dating of trees in the glacier forefield (Carrara and McGimsey, 1981). Carbonate flux began to rise at the onset of ice retreat, and reached a peak nearly synchronous with the maximum reconstructed retreat rates ca AD 1930. Filled black line presents a tree-ring compilation (BMS Douglas Fir) sensitive to summer drought collected in the vicinity of the Agassiz Glacier (Pederson et al., 2004). Black fill (note reversed scale) denotes wetter, cooler conditions that were responsible for advance of the Agassiz Glacier to its LIA maximum position. Retreat began with the switch to below-normal precipitation.

A lacustrine-based Neoglacial record for Glacier National Park, Montana, USA

  • a Geology Department, Middlebury College, 276 Bicentennial Way, Middlebury, VT 05753, USA
  • b Department of Geological Sciences, SUNY Geneseo, Geneseo, NY 14454, USA

Abstract

Multi-proxy study of sediment cores retrieved from lakes below modern glaciers supports the first detailed Neoglacial chronology for Glacier National Park (GNP), Montana. Analysis focused on sedimentary properties sensitive to the extent and activity of upstream glacier ice, including: water, organic matter, carbonate, and biogenic silica content; bulk density; mass accumulation rate; phosphorus fractionation; magnetic susceptibility; L*a*b* color values; and grain size distribution. Results indicate that alpine glaciers in GNP advanced and retreated numerous times during the Holocene after the onset of Neoglaciation ca 6500 BP. The two oldest phases of glacier expansion were synchronous with the well-documented Garibaldi (5600–6900 BP) and Tiedemann-Peyto (1900–3700 BP) phases in western Canada. Younger phases correspond with the First Millennium Advance in western Canada, as well as glacier with advances in the Sierra Nevada. The culminating Little Ice Age (LIA) advance was the most recent and extensive of a series of advance/retreat cycles over the past millennium. Retreat from the LIA maximum was the most dramatic episode of ice retreat in at least the last 1000 years.

Highlights

► A high-resolution, lacustrine-based Neoglacial record. ► Neoglaciation began 6500 BP. ► Intervals of expanded glaciers were broadly synchronous within the region. ► Retreat after the Little Ice Age was the most dramatic event of the last millennium.
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Background material: 

Glacier National Park Quietly Removes Its ‘Gone by 2020’ Signs As ‘Glaciers Appear to be Growing, not Melting in Recent Years’

Flashback 1923: Experts said Glacier National Park would be ice-free by 1950 – In 1923, experts said Glacier National Park would be ice-free by 1950. 

Warmist Glacier National Park claims debunked: ‘Glaciers have been retreating for 20,000 years. It has nothing to do with (man-made) ‘climate change’

New paper finds glaciers in Glacier National Park retreated up to 6 times faster during the 1930’s than the past 40 years — Paper published in Quaternary Science Reviews – ‘Results indicate that alpine glaciers in Glacier National Park advanced and retreated numerous times during the Holocene after the onset of Neoglaciation 6,500 years before the present’ and ‘Retreat from the Little Ice Age maximum was the most dramatic episode of ice retreat in at least the last 1000 years.’

AP gets glacier melt right: ‘Glacier National Park melting for 60 years before the park was founded in 1910’

National Parks Quietly Toss Signs Saying Glaciers ‘Will Be Gone’ By 2020 (They’re Growing)

‘Global warming not the culprit’: Glaciers of Yosemite National Park are NOT disappearing from climate change

Climate alarmists meltdown over Glacier Nationlal Park

Greenland’s Glacier Grows Alarming Climate Hysterics – A screaming lack of enthusiastic media coverage regarding recent evidence that Jakobshavn, the previously fastest-flowing, fastest-thinning glacier on Greenland’s west coast, has now gone rogue. Jakobshavn has represented the largest source of periodic ice mass loss over the last 20 years, and has produced about 10 percent of the country’s icebergs.

GLACIERS

Some glaciers melted faster before 2nd half of 20th century — Leading Arctic Researcher Shows That Glacial Melt Slowed Substantially Since 1952 — ‘Leading Arctic expert William Carlson said that glaciers in Norway & Alaska lost half their size during the fifty years before 1952. Had that rate of loss continued, there would have been no glaciers left in Alaska or Norway by 2002. Given that there are glaciers remaining, we can infer that the rate of ice loss was slower in 2nd half of century than it was in 1st half of century’

UN Report: ‘Glaciers increasing despite climate change’ — ‘Glaciers in many parts of the world are increasing’ — ‘Glaciers have grown in western Norway, New Zealand’s South Island, parts of Asia and the Tierra del Fuego in South America.’

UN IPCC Wrong: Himalayan glaciers not melting because of climate change, report finds: ‘Himalayan glaciers are actually advancing rather than retreating, claims the first major study since a controversial UN report said they would be melted within quarter of a century’

IPCC Caught Again! ‘Importance Of Glaciers As A Source Of Fresh Water Exaggerated, Say Austrian Scientists: ‘IPCC has also grossly exaggerated the importance of glaciers as a source of fresh water…It is an exaggeration when it is claimed that the melting of glaciers endangers the water supply of 2 billion people.’