UK Times: ‘Killer tropical fish head for poles as oceans warm’
New paper finds solar activity explains abrupt slowdown of Atlantic Meridional Overturning Circulation [AMOC]
New paper finds solar activity explains abrupt slowdown of Atlantic Meridional Overturning Circulation [AMOC]
http://hockeyschtick.blogspot.com/2014/06/new-paper-finds-solar-activity-explains.html
A paper under review for Climate of the Past finds low solar activity explains an abrupt slowdown of the Atlantic Meridional Overturning Circulation [AMOC] during the period 1915-1935. According to the authors, the modeled mechanism is
“The weakened AMOC can be explained in the following. The weak total solar irradiance (TIS) during early twentieth century decreases pole-to-equator temperature gradient in the upper stratosphere. The North polar vortex is weakened, which forces a negative North Atlantic Oscillation (NAO) phase during 1905–1914. The negative phase of NAO induces anomalous easterly winds in 50–70° N belts, which decrease the release of heat fluxes from ocean to atmosphere and induce surface warming over these regions. Through the surface ice–albedo feedback, the warming may lead to continuously melting sea ice in Baffin Bay and Davis Strait, which results in freshwater accumulation. This can lead to salinity and density reductions and then an abrupt slowdown of AMOC.”
The AMOC and NAO ocean oscillations in turn have profound effects on other ocean and atmospheric oscillations and the global climate. The paper joins many other peer-reviewed publications linking solar activity to lagged effects on ocean and atmospheric oscillations and may represent yet another solar amplification mechanism.
Clim. Past Discuss., 10, 2519-2546, 2014
www.clim-past-discuss.net/10/2519/2014/
doi:10.5194/cpd-10-2519-2014
An abrupt slowdown of Atlantic Meridional Overturning Circulation during 1915–1935 induced by solar forcing in a coupled GCM
P. Lin1, Y. Song1,2, Y. Yu1, and H. Liu1
1State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China2College of Earth Science, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract. In this study, we explore an abrupt change of Atlantic Meridional Overturning Circulation (AMOC) apparent in the historical run simulated by the second version of the Flexible Global Ocean–Atmosphere–Land System model – Spectral Version 2 (FGOALS-s2). The abrupt change is noted during the period from 1915 to 1935, in which the maximal AMOC value is weakened beyond 6 Sv (1 Sv = 106 m3 s−1). The abrupt signal first occurs at high latitudes (north of 46° N), then shifts gradually to middle latitudes (∼35° N) three to seven years later. The weakened AMOC can be explained in the following. The weak total solar irradiance (TIS) during early twentieth century decreases pole-to-equator temperature gradient …
Ocean Heat Content -Another simple evidence based rebuttal of claims that missing heat is being carried down to the bottom of the ocean
Ocean Heat Content -Another simple evidence based rebuttal of AGW
http://theclimatescepticsparty.blogspot.com/2014/06/ocean-heat-content-another-simple.html
By Anthony CoxThe latest funny bit of science from the AGW world has been the assertion that the missing heat is being carried down to the bottom of the ocean. Leading lights of AGW science like England and Trenberth have both suggested the mechanism for this heat transfer to the bottom is wind. The absurdity of those positions are dealt with hereand here.But such obvious rebuttals of the science of AGW does not stop the alarmists from peddling their beliefs and mischief. In a recent online debate this graph was posted:The source of course is Cook’s SKS site and is highly misleading. How misleading it is revealed by Eric Skr on the same thread who has made some excellent points and posted some cogent graphs of Ocean Heat Content [OHC]. Eric noted this well-known NOAA graph was in Joules and not temperature:The vertical axis is clearly marked in Joules. Eric’s comment was: For the sake of discussion let’s accept the graph and all data as accurate. The lowest end of the graph is -10 Joules, the highest is +15 Joules. That gives us a 25 Joule delta. I see that they have scaled it at a factor of 10. 25 Joules converts to 0.01316412691165. We have to factor in the scale so we multiply by 10 and we come up with 0.1316412691165 – one tenth of a degree C between 1955 and 2014. Fabulous 1/10 of a degree over 50 years. Stunning amount of warming there.This is an excellent point and was noted by other astute commentators including Lucia at The Blackboard. Lucia also converted the Joule graph into temperature:That is astounding. Temperature at 2000 meters where England’s and Trenberth’s missing heat is supposed to be has gone up 0.09C since before 1960. Some missing heat. This is why the alarmists always post OHC graphs in Joules which have such bigger and scarier numbers. And that’s assuming the measurements are correct. Eric’s other valid point was that accurate measurements of OHC have really only been around since the ARGO measurements began in 2004.Using 2004 as a base Eric has been busy producing graphs of the OHC in different areas of the world at different levels based on the official ARGO data. The graphs of the ARGO data are simply another complete rebuttal of AGW science. They speak for …
U.S. Postal Service issues ‘global warming forever’ stamp?
U.S. Postal Service issues ‘global warming forever’ stamp?
http://wattsupwiththat.com/2014/06/05/postal-service-issues-global-warming-forever-stamp
This just in from the U.S.Postal service. (h/t to Marc Morano) In 2014, the U.S. Postal Service introduces Global: Sea Surface Temperatures, a new Forever® international rate stamp. Hmmm, not only is it an oddball stamp, being round, it isn’t even of actual sea surface temperatures, it’s a model output. That’s not a real El […]…
AGW link ‘is pretty tenuous’: Researcher ‘has a problem’ with attributing West Antarctic Ice Sheet ‘collapse’ to human activity
New excuse for ‘the pause’ – the wrong type of El Niños = ‘Could explain recent decade-scale slowdowns in global warming’
…About the warnings of a monster super El Nino coming to you this year
Mark Steyn on global warming standstill: Warmists ‘preferred answer is that the 21st century warming is hiding somewhere – most likely in the depths of the Pacific, next to that Malaysian plane’
http://www.steynonline.com/6288/a-deviant-from-state-ideology…
Scientists concede global warming ‘pause’, but now say global temp is wrong thing to measure
http://www.theguardian.com/news/2014/apr/20/weatherwatch-global-warming-ocean-heat-trade-winds
Has global warming come to a halt? For the last decade or so the average global surface temperature has stabilising at around 0.5°C above the long-term average. Can we all relax and assume global warming isn’t going to be so bad after all?
Unfortunately not. Instead we appear to be measuring the wrong thing. Doug McNeall and Matthew Palmer, both from the Met Office Hadley Centre in Exeter, have analysed climate simulations and shown that both ocean heat content and net radiation (at the top of the atmosphere) continue to rise, while surface temperature goes in fits and starts. “In my view net radiation is the most fundamental measure of global warming since it directly represents the accumulation of excess solar energy in the Earth system,” says Palmer, whose findings are published in the journal Environmental Research Letters.
So why aren’t surface temperatures keeping pace with ocean heat content and net radiation? The answer, according to a recent study in the journal Nature Climate Change, may be some unusually strong trade winds in the Pacific Ocean, which have buried the surface heat deep underwater, reducing the amount of heat flowing back into the atmosphere. Once the trade winds relax again that heat will likely be released and surface temperatures will bounce up again. In the meantime we’d be wise to keep a closer eye on ocean heat content (using the Argo array of ocean profiling floats) and net radiation (using satellites). Like it or not Earth’s future is looking hot.…
Wild claim: More CO2 makes FISH fearless, ‘GUNG-HO’ & vulnerable 2 predators. ‘THREATENS ENTIRE MARINE FOOD CHAIN.’
Wild claim: More CO2 makes FISH fearless, ‘GUNG-HO’ & vulnerable 2 predators. ‘THREATENS ENTIRE MARINE FOOD CHAIN.’ http://goo.gl/kDbR69