Tag Archives: Northern Hemisphere

Claim: Solar activity not a key cause of climate change, study shows

From the University of Edinburgh , another one-paper syndrome in the making funded by an NGO research council with a political mission to grab a headline. And, another poorly written press release where they don’t even cite the name of … Continue reading

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Posted in Modeling, Science, Solar | Tagged , , , , , , , | 182 Comments

Climate, Stadium Waves, and Traffic Waves

In a recent paper, Marcia Wyatt and Judith Curry posited about “Stadium Waves” and climate, suggesting that the ‘stadium-wave’ signal propagates like the cheer known as “the wave” at sporting events whereby sections of sports fans seated in a circular or … Continue reading

Posted in Curious things, Hiatus in Global Warming | Tagged , , , , , , , , , | 71 Comments

Methane estimates from the Arctic double, but there’s no cause for alarm

From the University of Alaska, Fairbanks Study: Arctic seafloor methane releases double previous estimates The seafloor off the coast of Northern Siberia is releasing more than twice the amount of methane as previously estimated, according to new research results published … Continue reading

Posted in Methane | Tagged , , , , , , , | 79 Comments

A link between the solar magnetic field and weather patterns on Earth may explain our lower than normal severe weather in 2013

From the “science is settled” department comes this new paper that points out a correlation between the Interplanetary Magnetic Field (IMF) and polar jet streams, which drive weather events on Earth. This new paper shows that the effects extend even … Continue reading

Posted in hurricanes, Solar, thunderstorms, tornadoes, Weather | Tagged , , , | 86 Comments

NSF says biosphere is breathing in CO2 more deeply

Press Release 13-139 Seasonal carbon dioxide range expanding as more is added to Earth’s atmosphere Northern Hemisphere land-based ecosystems “taking deeper breaths,” scientists find Levels of carbon dioxide in the atmosphere rise and fall each year as plants, through photosynthesis … Continue reading

Posted in Carbon dioxide | Tagged , , , , , , , | 89 Comments

Great News from Greenland

Guest essay by Dr. Patrick J. Michaels I recently returned from a trip to Greenland’s Jokabshavn Glacier, which discharges more ice than any other in the Northern Hemisphere. Our route of flight from Reykjavik traversed the ice cap from about … Continue reading

Posted in Glaciers, Greenland ice sheet | Tagged , , , , , , , | 65 Comments

Paper: ‘Summer temperatures were about 10°C warmer than today, even though the concentration of atmospheric CO2 was similar’

From AAAS: From Russia with Lovely Data Climate and the atmospheric concentration of CO2 are closely linked. Brigham-Grette et al. (p. 1421, published online 9 May) present data from Lake El’gygytgyn, in northeast Arctic Russia, that shows how climate varied … Continue reading

Posted in Paleoclimatology | Tagged , , , , , , , | 56 Comments

Pollution in Northern Hemisphere helped cause 1980s African drought

From the University of Washington: Decades of drought in central Africa reached their worst point in the 1980s, causing Lake Chad, a shallow lake used to water crops in neighboring countries, to almost dry out completely. The shrinking lake and … Continue reading

Posted in Drought | Tagged , , , , , , , | 69 Comments

Last three years prove AGW is not responsible for tornadoes

By Joseph D’Aleo, CCM Tuesday was an active severe weather day with 29 reported tornadoes (preliminary). Enlarged But for the season thus far, we are at the bottom end of the frequency as of the date. When it was active … Continue reading

Posted in tornadoes, Weather | Tagged , , , , , , , | 36 Comments

Mauna Loa hits 400 PPM of CO2, alarmists wail and gnash teeth, Earth survives

Source: http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html Al Gore calls for a day of prayer and reflection, and bothering your neighbor: So please, take this day and the milestone it represents to reflect on the fragility of our civilization and and the planetary ecosystem on … Continue reading

Posted in Carbon dioxide | Tagged , , , , , , , | 292 Comments

New NSF paleo research claiming Arctic was warmer fails to take major ocean circulation changes 3 million years ago into account

I covered this story earlier today, and it was presented much differently in that press release. This press release takes a different tack. IMHO, it looks like a big “ooops” from the National Science Foundation. See what I found after … Continue reading

Posted in Arctic, Paleoclimatology | Tagged , , , , , , , | 49 Comments

More ‘ice free Arctic’ claims – we’ve heard it all before

From the University of Massachusetts at Amherst, something we’ve heard before. For example this claim from 2008. Gotta love the use of props to show how climate tipping points work: NASA: Arctic Ocean Could be Mostly Ice Free in 2013 … Continue reading

Posted in Arctic, Sea ice | Tagged , , , , , , , | 71 Comments

The curious case of rising CO2 and falling temperatures

Guest essay by Tony Brown Some readers might recall my recent article ‘The Long Slow Thaw?’ In this I reconstructed Central England temperature to 1538 from its current instrumental date of 1659. I was surprised by two notable periods of … Continue reading

Posted in Uncategorized | Tagged , , , , , | 140 Comments

Another amplification mechanism discovered by which the Sun affects Earth’s climate

From The Hockey Schtick A paper published Tuesday in the Journal of Climate finds tiny variations in solar activity over 11-year solar cycles have greatly amplified effects upon climate via changes in the Arctic Oscillation, North Pacific sea surface temperatures … Continue reading

Posted in Cosmic rays | Tagged , , , , , , , | 72 Comments

Temperature change in perspective

Guest post by Ed Hoskins The UK Met Office long term Central England Temperature record[1] has kept a continuous and consistent data set since the 1660s. It appears to be reliable and to have maintained its quality. It has not … Continue reading

Posted in Temperature | Tagged , , , , , , , | 49 Comments

Future shifts in rainfall

From UC Berkeley: Rising temperature difference between hemispheres could dramatically shift rainfall patterns in tropics By Robert Sanders, Media Relations  BERKELEY — One often ignored consequence of global climate change is that the Northern Hemisphere is becoming warmer than the … Continue reading

Posted in Global warming, Rainfall | Tagged , , | 93 Comments

Study: Black carbon aerosol forcing may be an important factor affecting the snow & ice cover in the Northern Hemisphere

We’ve had several essays here at WUWT  on the role of Black Carbon soot and its role in affecting surface albedo. Anyone who has ever witnessed “dirty snow” knows that it tends to melt faster than white snow under sunlight … Continue reading

Posted in Aerosols, Carbon soot | Tagged , | 58 Comments

From UAH – Global Temperature Report: January 2013

Second warmest January in past 35 Global climate trend since Nov. 16, 1978: +0.14 C per decade January temperatures (preliminary) Global composite temp.: +0.51 C (about 0.92 degrees Fahrenheit) above 30-year average for January. Northern Hemisphere: +0.55 C (about 0.99 … Continue reading

Posted in Climate data | Tagged , , , , , , , | 55 Comments

Waste heat – a bigger climate effect than once thought

Dr. Roy Spencer recently opined about this issue (which is different from UHI) in: Waste Heat as a Contributor to Observed Warming If we divide that by the surface area of the U.S. in meters, we get 0.33 watts per sq. … Continue reading

Posted in Energy, Waste heat | Tagged , , , , , , , , | 138 Comments

Global Temperature Updates – 2012

By Paul Homewood While Obama is imploring us to stop the global warming that is bringing us “the devastating impact of raging fires, and crippling drought, and more powerful storms”, it would seem to be a good idea to see … Continue reading

Posted in Climate data | Tagged , , , , , , , | 23 Comments