The AAD reported this research in October 2015 – Adélie penguin population almost doubles in East Antarctica. The SMH has just reported – Giant iceberg could wipe out Adélie penguin colony at Cape Denison, Antarctica
The link is here Modulation of Ice Ages via Precession and Dust-Albedo Feedbacks.
His earlier paper was discussed – Albedo regulation of Ice Ages, with no CO2 feedbacks. And on a related subject I posted – Some climate sanity after Paris COP21 blabfest – drawing attention to The book “The Chilling Stars” by Henrik Svensmark & Nigel Calder sums up 12,000 years of Holocene cosmic & solar driven “climate change” in the North Atlantic. Ralph tells me he is in touch with Henrik Svensmark.
We present here a simple and novel proposal for the modulation and rhythm of ice ages and interglacials during the late Pleistocene. While the standard Milankovitch-precession theory fails to explain the long intervals between interglacials, these can be accounted for by a novel forcing and feedback system involving CO2, dust and albedo. During the glacial period, the high albedo of the northern ice sheets drives down global temperatures and CO2 concentrations, despite subsequent precessional forcing maxima. Over the following millennia CO2 is sequestered in the oceans and atmospheric concentrations eventually reach a critical minima of about 200 ppm, which causes a die-back of temperate and boreal forests and grasslands, especially at high altitude. The ensuing soil erosion generates dust storms, resulting in increased dust deposition and lower albedo on the northern ice sheets. As northern hemisphere insolation increases during the next Milankovitch cycle, the dust-laden ice-sheets absorb considerably more insolation and undergo rapid melting, which forces the climate into an interglacial period. The proposed mechanism is simple, robust, and comprehensive in its scope, and its key elements are well supported by empirical evidence.
This Fig 3 from the book The Chilling Stars by Henrik Svensmark & Nigel Calder sums up 12,000 years of Holocene cosmic & solar driven “climate change” in the North Atlantic. The paper by G. Bond can be found as a pdf by googling the title -Persistent solar influence on North Atlantic climate during the holocene. The periods of iceberg armadas through the last glacial are termed Heinrich events and the warmer periods between are termed Dansgaard-Oeschger events. I wonder if these 19C reports of iceberg fleets way north of where we would now expect in southern oceans – are the tail end of the last Heinrich event.
The extent of snow indicated by NOAA surprised me – what do readers think. Post any news of snowstorms anywhere – Snow and gusts of 70mph wind to sweep across Britain – and California ski season early
Guest article by Ralph Ellis who welcomes constructive feedback – some familiar ice ages charts put together in a way I have not seen.
Canadian Broadcasting Corporation finds thick sea ice in July stops their polar expedition. The CBC is I assume the Canadian = to the Australian ABC – in April they announced – Icebergs, melting ice to be studied by Arctic expedition leaving from St. John’s – now it is – CCGS Amundsen re-routed to Hudson Bay to help with heavy ice Worst ice conditions in 20 years force change of plans to icebreaker research program –
Its disgusting – thick ice in July.
And a reminder from the BBC of what happens in the Med when Senator Sea Patrol – is not around.
Mediterranean migrant crisis: Dozens ‘drown off Libya’
Throughout history people not properly prepared for the sea have often come to harm.
Page 19/45 of a presentation by Captain Jianzhong Wang of the icebreaker R/V Xuelong given to the COMNAP Sea Ice Challenges Workshop 12-13 May 2015 in Hobart, Session 1. The presentation is well worth a read – some great photos.
This is a fascinating example of a taboo climate subject we seldom hear from IPCC compliant science sources – quietly leaking out in Abstracts and presentations from the the COMNAP Sea Ice Challenges Workshop held in Hobart, Tasmania, Australia on 12-13 May 2015. I have only had time to read the top two presentations by the Chinese and the French.
A quote from the French Abstract – [Variations in both sea ice proxies, SOI and SAM present periodicities similar to solar activity cycles Gleissberg and Suess cycles) showing an influence of solar activity on atmospheric and oceanic circulation through the modulation of the SOI and SAM.] The sea ice proxies they ref to are derived from diatoms in sea floor sediment cores. Diatoms live near the ocean surface and when they die their minute siliceous skeletons contribute to the sea floor sediment.
SOI is of course the Southern Oscillation Index and SAM is the Southern Annular Mode. And we are told that carbon dioxide is the dominant cause of changes in climate.
NASA finds Antarctic ice shelf just a few years from disintegration – pity that it is north of the Antarctic circle and closer to Cape Horn than the south pole. There is also quite a cluster of volcanoes around the Larsen ice shelves – but hey lets not worry about subterranean heat sources. This story has been running for 15 years – whether or not the Larsen B fades away does not affect the bigger story, which is the expansion and thickening of Antarctic sea ice – a real problem for the warmers.