Category Archives: clouds

Solar gains in Spain may cause warmists pain

Posted on June 6, 2013 by

From the FECYT – Spanish Foundation for Science and Technology via Eurekalert comes this interesting note about solar forcing. It seems there’s a 2.3% per decade increase in solar radiation observed in Spain. Surely this is more than enough to … Continue reading →

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Posted in clouds, Solar | Tagged , , , , , , , | 284 Comments

Climate lab in a container on the high seas

Posted on October 1, 2012 by

From the Brookhaven National Laboratory: Yearlong MAGIC Climate Study Launches Climate instruments mounted aboard the Horizon Spirit container ship begin taking data The Horizon Spirit makes the round trip between Los Angeles and Hawaii every two weeks. UPTON, NY — A … Continue reading →

Posted in clouds, Modeling | Tagged , , , | 42 Comments

Some confirmation of Spencer’s cloud hypothesis – it is getting less cloudy and warmer at the same time

Posted on August 20, 2012 by

A new paper just published in the Journal of Climate finds that global cloudiness has decreased over the past 39 years from between 0.9 to 2.8% by continent as shown in the figure below: The period of the study is … Continue reading →

Posted in Climate sensitivity, clouds, Cosmic rays, Weather | Tagged , , , | 185 Comments

New paper shows negative cloud feedback associated with SAM

Posted on July 7, 2012 by

A paper published Friday in the Journal of Geophysical Research (GRL) finds that a known and natural atmospheric oscillation, the Southern Annular Mode or SAM, is correlated with observed increases in cloud cover resulting in regional cooling of approximately -2.5C. … Continue reading →

Posted in clouds, Southern Annular Mode, Weather | Tagged , , , , , , | 78 Comments

Forcing or Feedback?

Posted on June 7, 2012 by

Guest Post by Willis Eschenbach I read a Reviewer’s Comment on one of Richard Lindzen’s papers today, a paper about the tropics from 20°N to 20°S, and I came across this curiosity (emphasis mine): Lastly, the authors go through convoluted … Continue reading →

Posted in Albedo, clouds, feedbacks, Peer review | Tagged , , | 87 Comments

Spencer’s posited 1-2% cloud cover variation found

Posted on April 4, 2012 by

In a nutshell, with a −1.6%per decade change in cloud cover during 1954–2005, it becomes a climate forcing. While China is not the world, it bears consideration. The Hockey Schtick reports: New paper finds significant, natural decrease in cloudiness over … Continue reading →

Posted in Aerosols, Climate sensitivity, clouds, Cosmic rays | Tagged , , , , , , , | 90 Comments

Crowdsourced Climate Complexity – Compiling the WUWT Potential Climatic Variables Reference Page

Posted on February 19, 2012 by

By WUWT regular “Just The Facts” With the help of an array of WUWT reader comments, which began on this thread on January, 15th 2011, and grew on January 22nd, 2011, February 10th, 2011, February 28th, 2011, June 30th, 2011 … Continue reading →

Posted in AMO, Announcements, Antarctic, Arctic, Carbon dioxide, Carbon sequestration, Citizen science, Climate data, clouds, Cosmic rays, dust storms, Earth, Education, Energy, ENSO, Environment, feedbacks, flooding, Forecasting, geothermal energy, Global warming, hurricanes, Land use land cover change, lightning, measurement, Methane, Modeling, Oceans, PDO, Science, Sea ice, snowfall, Temperature, tornadoes, UHI, Weather | Tagged , , , , , , , , | 132 Comments

Fogageddon

Posted on February 11, 2012 by

I suppose if  I truly want to take the weekend off, I’ll have to ditch my smartphone. These photos from the Facebook page of the Panhandle Helicopter Service in Panama City Beach, Florida, have been making the rounds today, erroneously … Continue reading →

Posted in clouds, Weather | Tagged , , , | 85 Comments

The Ridiculousness Continues – Climate Complexity Compiled

Posted on January 21, 2012 by

By WUWT regular “Just The Facts” With the help of an array of WUWT reader comments on this thread and several others documented within, I’ve been compiling a summary of all potential climatic variables in order to build a conceptual … Continue reading →

Posted in Aerosols, AMO, Antarctic, Arctic, Climate data, clouds, Cosmic rays, dust storms, Earth, Earthquakes, Energy, ENSO, feedbacks, geothermal energy, Gravity, hurricanes, Methane, Oceans, PDO, petroleum, Science, Sea ice, Snow, Solar, solar power, thorium power, tornadoes, wind power | Tagged , , , , , , , , , , | 266 Comments

Nacreous cloud show at the Arctic Circle

Posted on January 15, 2012 by

From spaceweather.com An apparition of polar stratospheric clouds is underway around the Arctic Circle. “It is almost as good as the aurora borealis,” says Göran Strand, who took this picture last night from Östersund, Sweden: Eric Schandall of Oslo, Norway, … Continue reading →

Posted in clouds, Optical phenonmena | Tagged , , , , , , , | 71 Comments

Earth versus the flying saucers

Posted on October 9, 2011 by

I’m sure many of you remember this campy scifi film from 1956. Roswell on steroids. But did you know that there is a natural phenomenon on Earth that gives rise to reports of flying saucers on a regular basis? In … Continue reading →

Posted in clouds, Curious things | Tagged , , , , | 129 Comments

High level clouds and surface temperature

Posted on October 6, 2011 by

Guest post by Erl Happ The orbit of the Earth’s around the sun is slightly eccentric. The closest point is called the perihelion. On January 4th the Earth is just 147,098,291 km away from the sun. Aphelion occurs July 4th … Continue reading →

Posted in clouds | Tagged , , | 138 Comments

Cloud cools

Posted on September 28, 2011 by

Guest post by Erl Happ This post was generated in response to the Christopher Monkton thread. It is not a criticism of Christopher Monkton but of our tendency to imagine that artful mathematicians (I am not one) are sufficiently sophisticated … Continue reading →

Posted in Climate sensitivity, clouds | Tagged | 113 Comments

New peer reviewed paper: clouds have large negative cooling effect on Earth’s radiation budget

Posted on September 20, 2011 by

Oh dear, now we have three peer reviewed papers (Lindzen and Choi, Spencer and Braswell, and now Richard P. Allan) based on observations that show a net negative feedback for clouds, and a strong one at that. What will Trenberth … Continue reading →

Posted in clouds, Spencer-Braswell and Dessler | Tagged , , , , , , , , | 315 Comments

Prey and predator model of clouds

Posted on July 25, 2011 by

From the Weizmann Institute of Science – Eat, Prey, Rain Photo: Tamar Deutsch What do a herd of gazelles and a fluffy mass of clouds have in common? A mathematical formula that describes the population dynamics of such prey animals … Continue reading →

Posted in Aerosols, clouds | Tagged , , , , | 29 Comments

While the Sun’s in a funk, no hint of resumed ocean warming

Posted on July 9, 2011 by

Global SST Update: Still No Sign of Resumed Warming by Roy W. Spencer, Ph. D. Here’s the global average sea surface temperature (SST) update from AMSR-E on NASA’s Aqua satellite, updated through yesterday, July 7, 2011: The anomalies are relative … Continue reading →

Posted in Climate data, clouds, ENSO, Sea Surface Temperature | 64 Comments

World War II bombing raids offer new insight into the effects of aviation on weather

Posted on July 8, 2011 by

From Wiley-Blackwell via Eurekalert Wartime weather records reveal impact of contrails caused by USAAF raids Climate researchers have turned to the Allied bombing raids of the Second World War for a unique opportunity to study the effect thousands of aircraft … Continue reading →

Posted in clouds, Weather | 77 Comments

Contrails – itty bitty icy forcing

Posted on June 23, 2011 by

From the American Geophysical Union weekly highlights: Estimating climate effects of contrails Condensation trails, or so-called contrails, formed by freezing of ice crystals in the exhaust from aircraft jet engines could affect climate. Like natural cirrus clouds, contrails change atmospheric … Continue reading →

Posted in clouds, Weather | Tagged , , | 110 Comments

Uncertain Climate Risks (Nature Climate Change)

Posted on April 28, 2011 by

Guest Post by Ira Glickstein As I continue to plow through Vol 1 Issue 1 of the new Journal Nature Climate Change, I came to the following amazing statement: Communicating the value of climate modelling … requires confronting such apparent … Continue reading →

Posted in Climate_change, clouds, feedbacks, IPCC, Modeling, Politics, Science, Uncategorized | Tagged , , , , | 153 Comments

Clouds, radiative forcing, and climate models – still tweaking

Posted on April 23, 2011 by

As most readers know, clouds are still poorly understood and under-represented in climate models. This new research may help. From: DOE/Pacific Northwest National Laboratory Effect of cloud-scattered sunlight on earth’s energy balance depends on wavelength of light Accounting for wavelength … Continue reading →

Posted in clouds, Modeling | Tagged , , , | 70 Comments