The Three Sides Of Climate Science

by Hans Schreuder, April 29, 2019 in ClimateChangeDispatch

For the past 30 years, there has been an orchestrated alarm over how much a trace of a trace gas, human-produced carbon dioxide (CO2), impacts earth’s climate.

The idea was presented as the ‘settled science’ and that there exists a ‘greenhouse effect’ in Earth’s atmosphere and that CO2 ‘traps heat’ or ‘delays cooling’.

Besides the ‘official scientists’ who have convinced the world that there really is a problem, there are what I call the pseudo-skeptics, a large group that is more widely known as ‘Lukewarmists’.

They include many professors who don’t disagree that the trace gas CO2 must be causing ‘some’ warming but think it is so small it isn’t worth worrying about.

This group also fully backs the greenhouse gas theory and claims CO2 warming is logarithmic (i.e., determined on a sliding scale of positive water vapor feedback – see this post from WUWT with reader comments and the subsequent confusion).

Legislation Would End Oil and Gas Production In Most of California

by Katy Grimes, April 22, 2019 in CaliforniaGlobe

The “Keep it In the Ground,” anti-oil and gas industry movement is going after the industry with more legislation disguised to address health and local control issues, despite that California already has the most environmentally regulated oil and gas production in the world, regulated by more than 25 agencies.

“Keep It in the Ground” is a global protest movement opposing fossil fuel development.

California was the fourth-largest producer of crude oil among the 50 states in 2017, after Texas, North Dakota, and Alaska, and, as of January 2018, third in oil refining capacity after Texas and Louisiana.

AB 345 by Assemblyman Al Muratsuchi (D-Torrance), would increase setback distance between oil production facilities and private and public property to 2,500 feet for every well, existing or planned in the state.

According to the Western States Petroleum Association and the California Independent Petroleum Association, this bill, if passed, would effectively end oil production in many parts of the state and threaten the future of production IN ALL PARTS OF THE STATE, for example:

  • 87% of all wells in the City of Los Angeles would be shut in

  • 66% of the well in Los Angeles County would be shut in

  • Thousands of wells in Kern County will be shut in

Énergie nucléaire : « SMR » (petits réacteurs modulaires)

by Connaissance des Energies, 29 avril 2019

  • Les Small Modular Reactors (SMR) sont de petits réacteurs nucléaires réalisés en usines sous forme de modules.
  • Leur puissance varie généralement entre 10 et 300 MW.
  • Le déploiement des SMR est envisagé pour produire de l’électricité, en particulier dans des sites isolés, mais également pour des applications non électrogènes : chaleur, dessalement, production d’hydrogène, propulsion, etc.
  • Fin 2018, on dénombre une cinquantaine de projets de SMR, avec de nombreuses technologies à l’étude.

Les modules SMR » de NuScale Power pèseront près de 700 tonnes et pourront être transportés par camion ou par barge. (Image provided by NuScale Power, LLC)


by Andrew Montford, April 23, 2019 in GWPF

Extinction Rebellion seem to be everywhere at the moment. And everywhere their story is the same. We are in the middle of a climate catastrophe. As the Huffington Post put it,

Human-caused climate change is driving sea-level rise, drought, extreme weather and a biodiversity crisis that scientists have declared Earth’s sixth mass extinction event. As many as 150 species die off each day.

Scary eh? Surely that’s enough to justify the odd street protest?

It was therefore interesting to see read some remarks from Richard Betts today. Professor Betts is the head of climate impacts at the Met Office, so his views in this area carry a certain amount of weight. Asked what he thought were the top three negative impacts of climate change that have “absolutely started”, he replied:

  • Sea level rise
  • Increasing risk of high temperatures
  • Changes in phenology and distribution for numerous species

This left me agog. There was nothing about drought or hurricanes or any of the other manifestations of extreme weather that are said to be afflicting us; nothing about floods, or typhoons, or desertification or crashing crop yields or climate refugees, mass extinctions, skydiving walruses and any of the thousand and one tall tales that climate activists spin and the media faithfully repeat every day. The contrast between this take on currently observed negative impacts and David Attenborough’s risible Climate Change: the Facts programme last week is startling. The take home message is that most of what the “national treasure” told viewers about climate change was grubby insinuation rather than fact: less to do with science than with the BBC’s ongoing eco-campaign.

The Relationship between Atmospheric Carbon Dioxide Concentration and Global Temperature for the Last 425 Million Years

by William J. Davis, September 2017, in ResearchGate

Assessing human impacts on climate and biodiversity requires an understanding of the relationship between the concentration of carbon dioxide (CO2) in the Earth’s atmosphere and global temperature (T). Here I explore this relationship empirically using comprehensive, recently-compiled databases of stable-isotope proxies from the Phanerozoic Eon (~540 to 0 years before the present) and through complementary modeling using the atmospheric absorption/transmittance code MODTRAN. Atmospheric CO2 concentration is correlated weakly but negatively with linearly-detrended T proxies over the last 425 million years.

Evénements hyperthermiques du Tertiaire : précurseurs de la situation actuelle?

by  A. Préat & A. Jacobs, 17 avril 2019 in ScienceClimatEnergie

Le but de cet article est de montrer combien la climatologie (actuelle et celle du passé) est complexe et que’ la science est loin d’être dite’. Pour ce qui est de la climatologie actuelle de très nombreux articles existent, dont une partie sur SCE. Pour la climatologie du passé les exemples géologiques ne manquent pas (également quelques articles généraux sur SCE, ici). Le propos de cet article est basé sur une analyse détaillée des événements hyperthermiques de la limite Paléocène/Eocène il y a 56 Ma et de l’Eocène inférieur (pour l’intervalle 54-52 Ma, Figure 1). Cet exemple montrera que la Terre a connu à de nombreuses reprises des températures bien plus élevées que celles d’aujourd’hui, avec des océans plus chauds, parfois plus acides et une atmosphère beaucoup plus riche en CO2 (ou en CH4) que l’actuelle. Cela n’a jamais empêché la vie de se développer, et ‘ironie du sort’ c’est au cours d’un de ces événements hyperthermiques du Tertiaire (ou PETM, voir plus loin), qui fut l’un des plus chauds qu’ait connu la Terre, que les mammifères ont poursuivi une radiation évolutive (= diversification des espèces) sans précédent entamée après l’extinction des dinosaures à la limite Crétacé/Tertiaire [1, 2].


Another climate lie bites the dust – No, Honolulu’s beaches aren’t going to disappear in 20 years

by Aylin Woodward, April 25, 201 in WUWT

In May 2017, high tides engulfed parts of the iconic Waikiki beach, edging dangerously close to waterfront hotels. This kind of high-tide flooding, often called a king tide or sunny-day flood, occurs when ocean water surges to higher levels than coastal infrastructure was designed to accommodate. In that case, water levels rose 2.5 feet above average in Waikiki, drowning nearby roads and sidewalks.

According to a 2017 report (which was updated in September 2018), Hawaii’s state capital and Waikiki Beach – along with other coastal strips on Hawaii’s five islands – are expected to experience frequent flooding within 15 to 20 years.

“This flooding will threaten $5 billion of taxable real estate; flood nearly 30 miles of roadway; and impact pedestrians, commercial and recreation activities, tourism, transportation, and infrastructure,” Shellie Habel, lead author of the 2017 study, said in a release.

Now, Hawaii state lawmakers are taking steps to shore up the state’s beaches and coastal cities. A new bill that mandates a statewide shore protection program has passed both houses of Hawaii’s state legislature, and will soon makes its way to the governor’s desk for approval.

All well and good that they want to improve beach resilience. But, the claim that ” Hawaii’s iconic Waikiki Beach could be engulfed by the ocean in 20 years ” is totally bogus.

Here is why:


Basic Science: 4 Keys to Melt Fears About Ice Sheets Melting

by William Ward, April 18, 2019 in WUWT

The world is drowning in articles about catastrophic sea level rise (SLR), reminding us that if the ice sheets melt, 260 feet of water will flood our coastal cities. We know that sea level today is 20-30 feet lower than it was at the end of the last interglacial period 120,000 years ago. We also know that sea level has risen 430 feet since the end of the last glacial maximum 22,000 years ago. Research shows this rise was not monotonic but oscillatory, and during periods over the past 10,000 years, sea level has been several meters higher than today. So, evidence supports the possibility of higher sea levels, but does the evidence support the possibility of catastrophic sea level rise from rapidly melting ice?

In this paper, basic science is used to show that catastrophic SLR from melting ice cannot happen naturally over a short period. Additionally, humankind does not possess the capability to melt a large amount of ice quickly even through our most advanced technology. This news should relieve the public, which is routinely deceived by reporting that misrepresents the facts. The public is susceptible to unnecessary alarmism when melt rates and ice-melt masses are presented without perspective and juxtaposed against claims that scientists are worried. This paper uses the same facts but places them in perspective to show that catastrophic risks do not exist.

UAH, RSS, NOAA, UW: Which Satellite Dataset Should We Believe?

by Dr Roy Spencer, April 23, 2019 in GlobalWarming

This post has two related parts. The first has to do with the recently published study of AIRS satellite-based surface skin temperature trends. The second is our response to a rather nasty Twitter comment maligning our UAH global temperature dataset that was a response to that study.

Furthermore, that period (January 2003 through December 2017) shows significant warming even in our UAH lower tropospheric temperature (LT) data, with a trend 0.01 warmer than the “gold standard” HadCRUT4 surface temperature dataset (all deg. C/decade):

AIRS: +0.24
GISTEMP: +0.22
ECMWF: +0.20
Cowtan & Way: +0.19
UAH LT: +0.18
HadCRUT4: +0.17

I’m pretty sure the Susskind et al. paper was meant to prop up Gavin Schmidt’s GISTEMP dataset, which generally shows greater warming trends than the HadCRUT4 dataset that the IPCC tends to favor more. It remains to be seen whether the AIRS skin temperature dataset, with its “clear sky bias”, will be accepted as a way to monitor global temperature trends into the future.

What Satellite Dataset Should We Believe?

Energy Returned On Energy Invested: Real(ish)Things That Don’t Matter, Part Trois

by David Middleton, April 24, 2019 in WUWT

In Part One of this series, we looked at Peak Oil and its irrelevance to energy production and also discussed the relevance of Seinfeld. In Part Deux, we looked at “abiotic oil,” a real(ish) thing that really doesn’t matter outside of academic discussions and SyFy blogs.

Part Trois will explore perhaps the most meaningless notion to ever come out of academia: Energy Returned On Energy Invested (EROEI or EROI depending on spelling skill). EROEI is like what Seinfeld would have been if it was written by Douglas Adams.

Greenland Temperature Data For 2018

by P. Homewood, April 24, 2019 in NotaLotOfPeopleKnowThat

The DMI has just published its Greenland Climate Data Collection for last year, and it is worth looking at the temperature data:

There are six stations with long records, Upernavik, Nuuk, Ilulissat, Qaqortoq, Narsarsuaq and Tasilaq.

Throughout Greenland we find that temperatures in the last two decades are little different to the 1920s to 60s.

The only exceptions were 2010 on the west coast sites, which was an unusually warm year, and 2016 on the east coast at Tasilaq, another warm year there.

Noticeably, last year was actually colder than the 1981-2010 average at all of the west and south coast stations.


Climate4you_Update-March 2019

by Climate4you, April 2019

All diagrams in this report, along with any supplementary information, including links to data sources and previous issues of this newsletter, are freely available for download on

Yours sincerely,
Ole Humlum (
Arctic Historical Evaluation and Research Organisation, Longyearbyen, Svalbard April 19, 2019.


The big Arctic Sea-Ice shift of 2007: Ice refuses to melt

by Javier, April 23, 2019 in WUWT

I have maintained since 2015 that in the 2006-2007 season the Arctic underwent a cyclical phase shift, and the rapid sea-ice melting observed over the previous decades ended. A few scientists predicted or explained this shift based on their study of multi-decadal oscillations (see bibliography). They were ignored by mainstream climatology and the press because the “anthropogenic” melting of the Arctic is one of the main selling points of the climate scare. See for example:

Year after year the data supports my view over the desperate scaremongers like Tamino. With the passing of time it is more and more difficult to defend the idea that Arctic melting is continuing, so alarmists keep changing the metric. First it was September sea-ice extent (SIE), then September sea-ice volume, and now annual average SIE. However, the reference measurements are September minimum SIE and March maximum SIE.

This article is more than a biannual update on the Arctic ice situation, as I will focus specifically on showing evidence for the trend change that took place in 2007. As 12 years have passed since the shift, the best way is to compare the 2007-2019 period with the previous 1994-2006 period of equal length to display the striking differences between both periods.

Figure 1. Changes in September SIE for both periods as a percentage change over the first year of the period.

Abiotic Oil: Real(ish)Things That Don’t Matter, Part Deux

by David Middleton, April 16, 2019 in WUWT

In part one of this series, we looked at Peak Oil and its irrelevance to energy production. In Part Deux, we will look at “abiotic oil,” a real(ish) thing that really doesn’t matter outside of academic discussions and SyFy blogs.

A note on terminology

Some refer to this as “abiogenic oil.” This is not a useful term because all oil is abiogenic. The generally accepted theory of petroleum formation doesn’t state that it is a biogenic process. I discussed this in detail in a 2017 post. I don’t intend to restate it here.

In this post, “abiotic oil” refers to petroleum formed by processes that do not rely on biological source material. The carbon in “abiotic oil” must be inorganic.

A real example of abiotic “oil”

The Lost City Hydrothermal Field is located on the Mid-Atlantic Ridge, about 15 km (~9 mi) west of the spreading center, in water depths ranging from 750-900 m (~2,500-3,000′) (Kelley et al., 2005).

Figure 1. Lost City location map. (University of Washington)

Solar variability manifestations in weather and climate characteristics

by Zherebtsov G.A. et al., April 2019 in J.Atm&SolarTerrestrialPhysics


We discuss the issues of primary importance to understand the nature of climate changes in the 20th century and main physical processes responsible for these changes and present a physical model for the solar activity (SA) effect on climate characteristics. A key concept of this model is the heliogeophysical disturbance effect on the Earth climate system parameters driving the long-wave radiation flux moving away from the Earth out into space in high-latitude regions. We address the solar activity effect on the changes in the temperature of the atmosphere and of the World Ocean. The aa–index of the geomagnetic activity (GA) was used as an SA proxy index. We discuss the results of analyzing the regularities and peculiarities of the tropospheric and sea surface temperature (SST) responses to both separate heliogeophysical disturbances and long-term changes in solar and geomagnetic activity. The structure of the tropospheric and SST temperature responses was shown to feature a spatial time irregularity. We revealed the regions, where long-term SST changes are determined mainly by SA variations.