Archives de catégorie : climate-debate

Science team points out a new failure of climate models

by A. Watts, April 6, 2020 in WUWT

From Nature Climate Change:

Ill-sooted models by Baird Langenbrunner

Atmospheric black carbon (BC) or soot — formed by the incomplete combustion of fossil fuels, biofuel and biomass — causes warming by absorbing sunlight and enhancing the direct radiative forcing of the climate. As BC ages, it is coated with material due to gas condensation and collisions with other particles. These processes lead to variation in the composition of BC-containing particles and in the arrangement of their internal components — a mixture of BC and other material — though global climate models do not fully account for these heterogeneities. Instead, BC-containing particles are typically modelled as uniformly coated spheres with identical aerosol composition, and these simplifications lead to overestimated absorption.

Full article here

Here, the PNAS paper

Carbon soot in from industrial process in the air. Licensed from

The Next Solar Cycle

by David Whitehouse.(pdf), April 6, 2020 in GWPF

London, 6 April: A former BBC science correspondent says that there remains a real possibility that unusual solar behaviour could influence the Earth’s climate, bringing cooler temperatures  for the next decade.

Despite rising levels of atmospheric carbon dioxide, the reduction in solar activity along with cooling from other long-term terrestrial climate variables could mean we might see a slowdown in global warming for years.

Dr Whitehouse says:  “It is clear that the solar influence on climate is about 0.1 °C a decade so it is important to know when there are low solar activity periods. We have a grasp of the basic mechanism that drives long-term solar activity, but many of the specifics still elude us. Successful predictions of solar cycle strength are therefore few and far between.”

Whitehouse adds that although NASA are predicting that solar cycle 25, which is just beginning, might be moderate-to-weak, the possibility of a very weak cycle, with a measurable effect on the terrestrial climate, remains a real one.

Dr Whitehouse reviews the history of solar cycle predictions in a new paper by the Global Warming Policy Foundation which is published today.

The paper, entitled The Next Solar Cycle, And Why It Matters For Climatecan be downloaded here (pdf)


Dr David Whitehouse

Is Greenland Warming, Melting? Hell No! NASA Data Show No Warming In Nearly 100 Years!

by Kirye & Gosselin, April 3, 2020 in NoTricksZone

But then NASA adjusted the V3 data and called it GHCN V4 “unadjusted”. The chart shown above in my tweet toggles between the prior V3 chart and the “unadjusted” V4. See the difference?

Note how the lack of warming has been removed and now the V4 data show modest warming. The missing heat was found – in the statistics! So in a sense, global warming has been “man-made” – done through statistical fudging and not human activity.

Extra warm U.S. winter had nature’s thumbprint on it–Joe Bastardi

by P. Homewood, April 3; 2020 in NotaLotofPeoppleKnowThat

Joe Bastardi explains why this winter has been so mild in the US, but also across N Europe, at CFACT.

Two points:

1) I will make the case for why such winters like this happen

2) I will point out that nowhere in this article did the massive natural physical drivers that far outweigh the effect of CO2, which is only .041% of the atmosphere. Pointedly, of which man is only responsible for  25% and the US only 15% of that total.

I am not going to waste time attacking here, except to say this kind of one-sided journalism and the fact that nowhere did anyone show what I am about to reveal to you, should raise questions of any objective person.

Basically the rules of the game are, if its warm like this winter, its climate change, if it is cold, its climate change. It is typical of everyone gets a trophy in that any answer even if opposite, means you get credit.

I won’t copy the whole article as it is a bit technical, but it can be seen here. However these are the main points Joe raises, starting with the role of El Nino and water vapour:

Water vapor is by far the most important greenhouse gas when it comes to the planetary weather and climate. Meteorologist look at “saturation mixing ratios” which show a correlation of water vapor to temperature. Basically the colder and drier the air mass, the more the introduction of water vapor will lead higher temperatures, there is no place like the arctic to prove this is the case. The cyclically warmed oceans have put more water vapor (and CO2) into the air. When Super El Niño’s go off, the immense amounts dispersed lead to a step up of the temperature. The colder regions leading the way as will be opined on below.

Magma Flood Linked To Sudden Ancient Global Warming Event

by H. Lee, April 1, 2020 in ClimateChangeDispatch

A study has cemented the link between an intense global warming episode 56 million years ago and volcanism in the North Atlantic, with implications for modern climate change.

Roughly 60 million years ago, circulation changes deep within our planet generated a hot current of rock — the Iceland plume — causing it to rise from the heart of Earth’s mantle.


The Giant’s Causeway in Northern Ireland is a geologic feature consisting of thousands of interlocking basalt columns that formed from volcanic eruptions 60 million years ago.

The Wrong Kind Of Carbon

Although a great deal of North Atlantic volcanism happened close in time to the PETM, scientists were initially skeptical that it could have driven the warming.

Sedimentary layers that formed at the time had the wrong kind of carbon — they were rich in the isotope carbon-12, indicating an organic carbon source rather than a volcanic one.

The leading theory was that fluctuations in Earth’s orbit around the sun melted a type of frozen methane just beneath the seabed called methane clathrates.

Yet scientists found scant evidence that enough clathrates existed in the pre-PETM world, or that they could have melted fast enough to drive the warming.

A possible missing link between the North Atlantic Igneous Province and organic carbon was spotted in 2004 in seismic scans through the seabed off the coast of Norway.

Continuer la lecture de Magma Flood Linked To Sudden Ancient Global Warming Event

Ships’ emissions create measurable regional change in clouds

by  University of Washington, March 24, 2020 in ScienceDaily

A container ship leaves a trail of white clouds in its wake that can linger in the air for hours. This puffy line is not just exhaust from the engine, but a change in the clouds that’s caused by small airborne particles of pollution.

New research led by the University of Washington is the first to measure this phenomenon’s effect over years and at a regional scale. Satellite data over a shipping lane in the south Atlantic show that the ships modify clouds to block an additional 2 Watts of solar energy, on average, from reaching each square meter of ocean surface near the shipping lane.

The result implies that globally, cloud changes caused by particles from all forms of industrial pollution block 1 Watt of solar energy per square meter of Earth’s surface, masking almost a third of the present-day warming from greenhouse gases. The open-access study was published March 24 in AGU Advances, a journal of the American Geophysical Union.


by Cap Allon, April 2, 2020 in Electroverse

The Global Lower Atmosphere plunged 0.28C in March to 0.48C, from its (expected early-year) high of 0.76C in February. Looking at the Sun, the cycles, the past, and the graphs, it is reasonable to assume there’s only one trend from here on out, and that’s down…

Take the previous anomalous “warming spikes” on the UAH Satellite-Based Temperature of the Global Lower Atmosphere chart (below) — they generally occur at the beginning of a year, and then are quickly followed by a sharp downward plunge:

The Next Great Extinction Event Will Not Be Global Warming – It Will Be Global Cooling

by A. MacRae, September 1, 2019 in WUWT


Forget all those falsehoods about scary global warming, deceptions contrived by wolves to stampede the sheep. The next great extinction event will not be global warming, it will be global cooling. Future extinction events are preponderantly cold: a glacial period, medium-size asteroid strike or supervolcano. Humanity barely survived the last glacial period that ended only 11,500 years ago, the blink-of–an-eye in geologic time.

Cold, not heat, is by far the greater killer of humanity. Today, cool and cold weather kills about 20 times as many people as warm and hot weather. Excess Winter Deaths, defined as more deaths in the four winter months than equivalent non-winter months, total over two million souls per year, in both cold and warm climates. Earth is colder-than-optimum for humanity, and currently-observed moderate global warming increases life spans.

“Cold Weather Kills 20 Times As Many People As Hot Weather”

By Joseph D’Aleo and Allan MacRae, September 4, 2015

However, Excess Winter Deaths are not the worst threats to humanity. The glacial cycle averages about 100,000 years, consisting of about 90,000 years of the glacial period, when mile-thick continental glaciers blanketed much of the Northern and Southern Hemispheres including Canada, Russia, Northern Europe and Northern USA, and about 10,000 years of interglacial, the warm period of the present. Earth is now 11,500 years into the current warm interglacial, and our planet may re-enter the glacial period at any time.

“Glacial-Interglacial Cycles”

The UAH Global Temperature Dataset at 30 Years: A Look Back at the Early Days

by Dr. Roy Spencer, March 31, 2020 in GlobalWarming

Today (Monday, March 30) is the 30th anniversary of our publication in Science describing the first satellite-based dataset for climate monitoring.

While much has happened in the last 30 years, I thought it might be interesting for people to know what led up to the dataset’s development, and some of the politics and behind-the-scenes happenings in the early days. What follows is in approximate chronological order, and is admittedly from my own perspective. John Christy might have somewhat different recollections of these events.

Some of what follows might surprise you, some of it is humorous, and I also wanted to give credit to some of the other players. Without their help, influence, and foresight, the satellite temperature dataset might never have been developed.


Continuer la lecture de The UAH Global Temperature Dataset at 30 Years: A Look Back at the Early Days

Coral tells own tale about El Niño’s past

by Rice University, March 27, 2020 in WUWT

HOUSTON – (March 26, 2020) – There is no longer a need to guess what ocean temperatures were like in the remote tropical Pacific hundreds of years ago. The ancient coral that lived there know all.

A study in Science led by Rice University and Georgia Tech researchers parses the record archived by ancient tropical Pacific coral over the past millennium. That record could help scientists refine their models of how changing conditions in the Pacific, particularly from volcanic eruptions, influence the occurrence of El Niño events, which are major drivers of global climate.

They found the ratio of oxygen isotopes sequestered in coral, an accurate measure of historic ocean temperatures, shows no correlation between estimates of sulfate particles ejected into the atmosphere by tropical volcanic eruptions and El Niño events.

That result could be of particular interest to scientists who suggest seeding the atmosphere with sun-blocking particles may help reverse global warming.

According to Rice climate scientist and primary author Sylvia Dee, previous climate model studies often tie volcanic eruptions, which increase sulfate aerosols in the atmosphere, to increased chances for an El Niño event. But the ability to analyze climate conditions based on oxygen isotopes trapped in fossil corals extends the climatological record in this key region across more than 20 ancient eruptions. Dee said this allows for a more rigorous test of the connection.

“A lot of climate modeling studies show a dynamical connection where volcanic eruptions can initiate El Niño events,” Dee said. “We can run climate models many centuries into the past, simulating volcanic eruptions for the last millennium.

“But the models are just that — models — and the coral record captures reality.”

Coral data that Georgia Tech climate scientist Kim Cobb and her team arduously collected on trips to the Pacific show little connection between known volcanoes and El Niño events over that time. Like tree rings, these paleoclimate archives hold chemical indicators, the oxygen isotopes, of oceanic conditions at the time they formed.

The coral data yields a high-fidelity record with a resolution of less than a month, tracking the El Niño-Southern Oscillation (ENSO) in the heart of the central tropical Pacific.


by Cap Allon, March 27, 2020 in Electroverse

Latest GFS runs are forecasting a truly frosty and snowy next 7+ days for the majority of Europe, as winter continues to encroach ever-further into spring — a phenomenon long-predicted by those who study the Sun’s impact on climate.

Beginning this weekend, brutal Arctic cold will engulf practically ALL of Europe sinking temperatures some 16C below-the-seasonal-average for many:

…and there’s plenty more where that came from.

GFS runs are predicting rare April snow accumulating during the next 14-or-so days, particularly in Norway, Sweden, NE Russia, Latvia, Lithuania, Belarus, Ukraine, the Balkans, Italy, the Alps, Spain, and even the UK (also, note the substantial falls in Eastern Turkey, Georgia, Armenia and Azerbaijan):


Past civilizations shown to peak during times of warmth (Grand Solar Maximums), and then almost-instantly collapse during the subsequent & sharp cool-downs (Grand Solar Minimums).

And these COLD TIMES are returning, in line with historically low solar activitycloud-nucleating Cosmic Rays, and a meridional jet stream flow.

Even NASA agrees, in part at least, with their forecast for this upcoming solar cycle (25) revealing it will be “the weakest of the past 200 years,” with the agency correlating previous solar shutdowns to prolonged periods of global cooling here.


by Cap Allon, March 29, 2020 in Electroverse

Despite decades of doom-and-gloom prophecies, Greenland’s Ice Sheet is currently GAINING monster amounts of “mass”— 6 gigatons yesterday alone (March 28, 2020).

Crucial to the survival of a glacier is its surface mass balance (SMB)–the difference between accumulation and ablation (sublimation and melting). Changes in mass balance control a glacier’s long-term behavior, and are its most sensitive climate indicators (

On the back of substantial SMB gains over the past few years, the Greenland ice sheet looks set to continue that trend in 2019-20. On March 28, 2020, the world’s largest island added a monster 6 gigatons to its ice sheet. According to climate alarmists, this simply shouldn’t be happening in a warming world. In fact, it might as well not be happening–developments like this NEVER receive MSM attention, meaning alarmists are NEVER privy to the full and unalarming picture…

In addition, Total Snow Mass for the Northern Hemisphere continues to track WELL-above average with the latest data point (March 27) seeing NH snow at a staggering 500+ gigatons above the norm—another real-world reality we were told should be an impossibility by now: IPCC 2001: “Milder winter temperatures will decrease heavy snowstorms…”


Les idéologues de l’hystérie climatique vus à l’ombre du Coronavirus

by Samuel Furfari, 26 mars 2020 in LaTribune

OPINION. Il semble morbide et cynique, alors que des milliers de personnes meurent du Coronavirus, d’insister en ce moment sur l’impérieuse nécessité d’agir contre le changement climatique. Pourtant, des idéologues, qui sont aussi et surtout ceux de la remise en cause de l’économie de marché, osent le faire. Ils ne ratent aucune occasion d’essayer de faire croire que le changement climatique cause ou exacerbe cette crise. Il est nécessaire de les dénoncer pour préparer l’avenir. Par Samuel Furfari, Professeur à l’Université Libre de Bruxelles et Président de la Société Européenne des Ingénieurs et Industriels.

Un climatologue français semble regretter que « ce qu’on fait pour le Coronavirus, c’est deux ans de financement climat » car, d’après lui, si on dépense de l’argent pour sauver des vies, on pourrait tout aussi bien redoubler d’effort pour sauver la planète. Un climatologue belge a eu l’outrecuidance de tweeter à la Première ministre belge et à son vice-Premier ministre en charge du budget qu’ils profitent de cette crise pour introduire une taxe sur l’énergie : « #Covid_19 : C’est le bon moment pour instaurer une vraie taxe CO2 sur les carburants, le mazout [fioul en Belgique] et le gaz fossile. Leur prix ayant fortement baissé, ce sera indolore. Cela permettra de dégager des ressources pour compenser les effets de la crise. » Sur Facebook, ce membre éminent du GIEC s’est fait traiter de « charognard », entre autres épithètes. En pleine crise, « presque hilare », un commentateur politique bien connu a apprécié que ce « virus révolutionnaire » empêchait la privatisation des aéroports de Paris et  s’en est pris aux « banques mondiales [qui] échouent lamentablement face à la crise climatique en injectant des billions dans les combustibles fossiles».

Les glaces terrestres, la cryosphère (2/3)

by J.C. Maurin, 27 mars 2020 in ScienceClimatEnergie

Partie 2/3 : Lecture critique du chapitre cryosphère de l’AR5

par J.C. Maurin, Professeur agrégé de physique

Cette deuxième partie de l’article examine la composition du chapitre 4 du 5ème rapport du GIEC (AR5) [1].
Dans ce chapitre, qui concerne les différentes composantes de la cryosphère, les banquises [2] et glaciers [3] sont particulièrement mises en avant par les rédacteurs du GIEC.
A propos de ces 2 composantes mineures (0,65 % du volume de la cryosphère), l’article développe certains éléments d’appréciation que les rédacteurs de l’AR5 n’ont pas mis en exergue.

Continuer la lecture de Les glaces terrestres, la cryosphère (2/3)

Heartland Institute Launches

by P. Homewood, March 24, 2020 in NotaLotofPeopleKnowThat

WUWT has news of a new website launched by the Heartland Institute, to augment the excellent factchecking site, Climate At A Glance:

Nearly every day, the establishment media promotes new climate propaganda themes designed to scare people into believing a climate crisis is at hand. When the Climate Scare goes unrebutted, people are likely to believe by default that the propaganda is true. Yet most of the media’s climate propaganda is misleading or outright false. will address and debunk the media’s most prominent climate-related tall tales.

Absence of evidence for greenhouse warming over the Arctic Ocean-Mark Serreze 1990

by P. Homewood, March 23, 2020 in NotaLotofPeopleKnowThat

We are familiar with the incessant claims that the Arctic is one of the fastest warming regions on Earth, and that this is due to the polar amplification effect of greenhouse gases.

But scientists back in the 1990s found that this theory did not stack up then:


ATMOSPHERIC general circulation models predict enhanced greenhouse warming at high latitudes1owing to positive feedbacks between air temperature, ice extent and surface albedo2–4. Previous analyses of Arctic temperature trends have been restricted to land-based measurements on the periphery of the Arctic Ocean5,6. Here we present temperatures measured in the lower troposphere over the Arctic Ocean during the period 1950–90. We have analysed more than 27,000 temperature profiles, measured by radiosonde at Russian drifting ice stations and by dropsonde from US ‘Ptarmigan’ weather reconnaissance aircraft, for trends as a function of season and altitude. Most of the trends are not statistically significant. In particular, we do not observe the large surface warming trends predicted by models; indeed, we detect significant surface cooling trends over the western Arctic Ocean during winter and autumn. This discrepancy suggests that present climate models do not adequately incorporate the physical processes that affect the polar regions.

The cooling between 1950 and 1990 is very evident at a whole range of land sites on the fringes of the Arctic, ranging from Greenland right through to eastern Siberia.


by Cap Allon, March 23, 2020 in Electroverse

The MSM has a blatant warm-bias, that’s been clear for years…

A myriad of news outlets were all-too-happy to run with the Antarctic Peninsula’s record warm temperature last month, painting it as further evidence of the coming climate catastrophe (despite the peninsula actually being located closer to Argentina than the South Pole, and the event officially going down as a foehn). But where are those same rags now? Where is their balance? Their credibility? Or is informing the public not the goal anymore, is their mission merely to propagandize?

Last Friday, Antarctica set its coldest EVER March temperature

…somehow, in what we’re to believe is a linearly warming world on the brink of “overheating”, the world’s southernmost continent is currently the coldest its ever been for the time of year.

The Vostok Station clocked a bone-chilling -75.3C (-103.54F) on the morning of Friday, March 20, as spotted by @TempGlobal on Twitter:

Location of Vostok (Wiki).


How much human-caused global warming should we expect?

by Andy May, March 21, 2020 in WUWT

C3S20 asks, how much human-caused warming will occur if we do nothing, that is, continue “business-as-usual?” It’s unfortunate, but the IPCC, for all their work, do not adequately answer that question, their projections are all based on abstract “scenarios.” C3S20 break this overall question into five parts:

  1. What would greenhouse gas emissions (GHG) be, if we did nothing and continued normally?
  2. For each GHG, how do emissions relate to the change in atmospheric concentration?
  3. What would the global temperature be if GHG concentrations were at “preindustrial” levels?
  4. How sensitive are global temperatures to GHG concentrations?
  5. How much warming should we expect if we do nothing?

C3S20 tell us the Paris Agreement conclusion that we need to limit global warming to 2°C above preindustrial levels suffers from several unknowns.

  1. The preindustrial period is not formally defined. The preindustrial temperature and greenhouse gas level are not specified. In fact, several time periods, temperatures and GHG levels are used as “preindustrial” in the latest IPCC AR5 report.

  2. The assumptions that warming is bad and increasing levels of CO2 are bad, are not supported with any data. Numerous studies have concluded that some warming is good for humankind and additional CO2 is good for plants.

  3. The penultimate draft of AR5 identified the period 1850 to 1900 as the preindustrial baseline for CO2 and temperature. This was the end of the Little Ice Age, the coldest periodin the last several thousand years. Why use that period as a baseline (Luning and Vahrenholt 2017)? This is not explained, and the final draft of the report removed the reference to the 1850 to 1900 baseline.

  4. If the UNFCC and the Paris Agreement assume “climate change” and “Human-caused Climate Change” are synonymous, how do they explain that climate has change much quicker and much more dramatically many times in the past 13,000 years before human civilization began and well before industrialization?

Climate At A Glance Factchecks–Coral Reefs

by P. Homewood, March 21, 2020 in NotaLotofPeopleKnowThat

Bullet Point Summary:

  • Coral thrive in warm water, not cold water.
  • Recent warming has allowed coral to expand their range poleward, while still thriving near the equator.
  • Coral has existed continuously for the past 40 million years, surviving temperatures and carbon dioxide levels significantly higher than what is occurring today.
  • The primary causes of coral bleaching include oxybenzone (a chemical found in sunscreen), sediment runoff from nearby coastal lands, and cold temperatures like those recorded in 2010 off the Florida coast.

Short Summary: Coral require warm water, not cold water, to live. Coral cannot live outside of tropical or subtropical waters. (See Figure 1.) As Earth continues to modestly warm, coral are extending their range toward the poles while still thriving at and near the equator. The primary reasons for bleaching events include sediment pollution from nearby coastal lands, chemicals found in sunscreen, and cold temperature events. Coral have existed continuously for the past 40 million years. Coral survived and thrived when temperatures were significantly warmer than they are today.

Figure 1: Coral Reef Locations

Continuer la lecture de Climate At A Glance Factchecks–Coral Reefs


by Cap Allon, March 19, 2020 in Electroverse

The first flakes of the season in Kiruna, Sweden fell back on Sept 30 and from then on have continued relentlessly, with accumulations now comfortably surpassing the region’s all-time snowfall record.

The cold times are returning in line with historically low solar activitycloud-nucleating Cosmic Rays, and a meridional jet stream flow.

NASA has recently revealed this upcoming solar cycle (25) will be “the weakest of the past 200 years,” with the agency correlating previous solar shutdowns to prolonged periods of global cooling here.

North Atlantic Oscillation

by P. Homewood, March 19, in NotaLotofPeopleKnowThat

If you had not noticed (!), it has been a mild and wet start to the year here in the UK, and also across in NW Europe.

No doubt this will be linked to global warming in due course, but in fact it is simply weather, as the CET chart below proves:

Since the year started, temperatures have consistently been within the normal band. In other the sort of temperatures commonly seen at this time of year.

However, they have also been consistently in the top half of that band, rather than being spread between cold and warm, as would happen most years.

The reason for the weather we have had is, of course, the jet stream, or more precisely the North Atlantic Oscillation (NAO), which has been strongly and stubbornly positive all winter.

The Norwegian Centre for Climate Research CICERO spotted this mild weather coming back in December, and commented on 6th January:

The unusual warm temperatures this winter and forecasts indicating milder winter conditions for January, February and March in Europe are partly due to an atmospheric circulation pattern called the North Atlantic Oscillation, or NAO. This atmospheric circulation pattern explains well the weather we get in Europe, especially in winter.



Our own Met Office explains the NAO phenomenon:



How exactly do they plan to replace fossil fuels?

by P. Driessen, March 16, 2020 in WUWT

They want to ban coal, oil and gas. Exactly how will they replace them? Who wins? Who loses?

Berkeley, CA, Takoma Park, MD and other cities; California, Connecticut, New York, Virginiaand other states; Germany, England and other countries; the European Union – all plan to banish oil, natural gas and coal within 10, 20 or 30 years. A number of US states have joined Regional Greenhouse Gas Initiatives and proudly say We Are Still Inthe Paris climate treaty, no matter what President Trump says or does.

Forget the headlines and models, and look at hurricane, tornado, sea level and other historic records. There is no crisis, no unprecedented warming or weather events, certainly nothing that proves humans have replaced the powerful natural forces that have always driven climate changes and weather events.

But for now, let’s just examine their zero-carbon plans. How exactly will they make this happen? Where do they plan to get the turbines, panels and batteries? the raw materials to manufacture them? How do they plan to function as modern societies with pricey, erratic energy and frequent power disruptions?


Continuer la lecture de How exactly do they plan to replace fossil fuels?

New research first to relate Antarctic sea ice melt to weather change in tropics

by C. Rotter, March 16, 2020 in WUWT

Diminishing sea ice translates to warmer ocean, more rain, and stronger trade winds.
University of California – San Diego

Arctic and Antarctic ice loss will account for about one-fifth of the warming that is projected to happen in the tropics, according to a new study led by Mark England, a polar climate scientist at Scripps Institution of Oceanography at the University of California San Diego, and Lorenzo Polvani, the Maurice Ewing and J. Lamar Worzel Professor of Geophysics at Columbia Engineering, England’s doctoral supervisor.

While there is a growing body of research showing how the loss of Arctic sea ice affects other parts of the planet, this study is the first to also consider the long-range effect of Antarctic sea ice melt, the research team said.

“We think this is a game-changer as it shows that ice loss at both poles is crucial to understanding future tropical climate change,” England said of the study funded by NASA and the National Science Foundation. “Our study will open a hitherto unexplored direction and motivate the science community to study the large effects that Antarctic sea ice loss will have on the climate system.”

Greenhouse Gases Not Behind The End Of The Warming Pause

by Dr A. Ollila, March 16, 2020 in ClimateChange Dispatch

During the years 2000-2014, the global temperature hardly increased, and that period has been called the temperature pause or hiatus.

The debate among the climate community has resulted in more than 200 research studies in some cases with opposite results about the reasons.

This amount of papers can be compared to the research studies of Earth’s energy balance and the greenhouse effect. I have found about 10 publications for both subjects.

During the years 2000-2014, the emissions of carbon dioxide were 126 gigatons carbon (GtC) being 31% of the total emission after 1750, but the greenhouse (GH) gases were not able to increase the temperature.

According to the IPCC, the temperature increase should have been 0.4°C from 2000 to 2014 (Ref. 1).

It looks like that the pause ended to the super El Nino 2015-2016 because the temperature has been thereafter about 0.2 °C above-the-pause average.

Research study about the pause and the ENSO

The impulse for my research study came from a story figure on WUWT that showed shortwave (SW) radiation variations during the pause.

A curve showed increased values around El Nino 2015-16 and thereafter. I decided to find out what could be the impact of this finding on the temperatures.

In Fig. 1, I have depicted the total solar irradiance (TSI), SW radiation and LW radiation from 2000 onward. This data is available from the CERES databank maintained by NASA.

Fig.1. TSI, SW radiation and LW radiation trends normalized to the altitude of 20 kilometers.

The List Grows – Now 100+ Scientific Papers Assert CO2 Has A Minuscule Effect On The Climate

by K. Richard, December 12, 2019 in NoTricksZone

Within the last few years, over 50 papers have been added to our compilation of scientific studies that find the climate’s sensitivity to doubled CO2 (280 ppm to 560 ppm) ranges from <0 to 1°C. When no quantification is provided, words like “negligible” are used to describe CO2’s effect on the climate. The list has now reached 106 scientific papers.

Link: 100+ Scientific Papers – Low CO2 Climate Sensitivity

A few of the papers published in 2019 are provided below.

Krainov and Smirnov, 2019  (2X CO2 = 0.4°C, 2X anthroCO2 = 0.02°C)

“The greenhouse phenomenon in the atmosphere that results from emission of its molecules and particles in the infrared spectrum range is determined by atmospheric water in the form of molecules and microdrops and by carbon dioxide molecules for the Earth atmosphere and by carbon dioxide molecules and dust for the Venus atmosphere. The line-by-line method used the frequency dependent radiative temperature for atmospheric air with a large optical thickness in the infrared spectral range, allows one to separate emission of various components in atmospheric emission. This method demonstrates that the removal of carbon dioxide from the Earth’s atmosphere leads to a decrease of the average temperature of the Earth’s surface by 4 K; however, doubling of the carbon dioxide amount causes an increase of the Earth’s temperature by 0.4 K from the total 2 K at CO2 doubling in the real atmosphere, as it follows from the NASA measurements. The contribution to this temperature change due to injections of carbon dioxide in the atmosphere due to combustion of fossil fuel, and it is 0.02 K. The infrared radiative flux to the Venus surface due to   CO2 is about 30% of the total flux, and the other part is determined by a dust.”