What do three CET reference weather stations used by the Met Office have in common?

Guest essay by Tom Barr Central England Temperature stations, long considered a benchmark, have been affected by land use change and urbanisation The answer is blindingly obvious, from above: they are all subject to considerable modern local urbanisation immediately to the North, including heated greenhouses designed to replicate a Mediterranean climate. The Met Office relies…

Claim: Due to landscape fragmentation, Brazil’s rainforests are releasing more carbon dioxide than previously thought

Effect has so far been missing in reports of the Intergovernmental Panel on Climate Change (IPCC) Because of the deforestation of tropical rainforests in Brazil, significantly more carbon has been lost than was previously assumed. As scientists of the Hemholtz Centre for Environmental Research (UFZ) write in the scientific journal Nature Communications, the effect of…

NOAA: Lots of land cover change in coastal areas seen

From NOAA: NOAA analysis reveals significant land cover changes in US coastal regions Land Cover Atlas helps communities ‘see’ vulnerabilities and craft stronger resilience plans A new NOAA nationwide analysis shows that between 1996 and 2011, 64,975 square miles in coastal regions–an area larger than the state of Wisconsin–experienced changes in land cover, including a…

Is Fighting Global Warming the Solution to Water Shortages in Malawi (or Elsewhere)?

Guest essay by E. Calvin Beisner In late May two evangelical environmentalists, recently returned from visiting Malawi, published articles in which they said poor Malawians are suffering from reduced rainfall caused by manmade global warming. Jonathan Merritt wrote for Religion News Service, “In America, climate change is a matter of debate, but in places like…

The Chinese demonstrate that UHI has a real and essential effect on regional climate change

Study finds that urbanization has considerable influence on the regional climate change, they even blame proximity to air-conditioning as a factor. Press release from Science China Press (full paper follows) Urbanization and surface warming in eastern China A recent study indicated that the urbanization in eastern China has significant impact on the observed surface warming…

More modeling madness: increased temperature ‘may’ cause more violent thunderstorms – but other studies show what they missed

From Tel Aviv University, another science press release with “could and may” qualifiers:  Climate Change May Lead to Fewer — But More Violent — Thunderstorms Number of flash floods and forest fires could increase with temperature, says TAU researcher Researchers are working to identify exactly how a changing climate will impact specific elements of weather,…

CO2 Is Greening The Planet: African Savannahs Getting a Makeover to Forests

I’ve covered this before, such as when NASA posted satellite data showing that the biosphere is booming thanks to CO2 fertilization. This new study from Goethe University in Frankfurt, Germany suggests that the Umbrella Thorn Acacia trees will make a comeback. Tree trumps grass to rule the savannas A new study published today in “Nature”…

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

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 and January 21st, 2012, I have been compiling a summary of all potential climatic variables…

Study: ‘green’ biofuels could be costing the earth

From the University of Leicester  department of inconvenient truths: New study suggests EU biofuels are as carbon intensive as petrol University of Leicester research into greenhouse gas emissions from oil palm plantations provides robust measures now being used to inform international policies on greenhouse gas emissions A new study on greenhouse gas emissions from oil…

More on land use change affecting temperatures

Pursuant to the story on sugarcane cooling the local climate, here are two posts from Dr. Roger Pielke Senior that show the effects of land use change in other venues. ============================================================== Excellent Presentation Of Land Use/Land Cover Effects On Climate By Dev Niyogi Of Purdue There is an excellent powerpoint presentation by Dev Niyogi of Purdue University at…

Bangladesh, the Poster Child

Guest post by: B.Quartero Bangladesh, the largest Delta in the world, has been the poster child of a scary sea level rise story ever since “An Inconvenient Truth”. There is much to be concerned about in Bangladesh, and flooding is most certainly one of the seasonal hardships Bangladesh has to put up with. Sea level…

UAH and UHI

Note: clearly satellites can see urban heat, as demonstrated by this recent paper unveiled at the 2010 AGU meeting by NASA. See: Satellites Image the Urban Heat Islands in the Northeast. It can also be demonstrated that the UHI biases the thermometers upwards. As cities grow, so does the increased bias. In that paper NASA says:…

NYT’s sort-of-clarity on Norfolk sinking aka “sea level rise” and an inconvenient map

This is a map and photo of Sharp’s Island and its sinking lighthouse in Chesapeake Bay, we’ll get back to that after the main article about Norfolk. GreenHell Blog writes: In an above-the-fold, front-page story, the Times’ Leslie Kaufman tried to tell a sad tale about global warming-induced sea-level rise wreaking havoc in Norfolk, VA.…

Christy on irrigation and regional temperature effects

In this recent post I discussed a paper on regional temperature divergence issues related to irrigation from Dr. John Christy saying: New irrigation effects study counter to what Christy discovered This press release below from Columbia University shown below suggests that irrigation cools the region undergoing irrigation. However, a study published three years ago of California’s…

New Study Examines Effects of Drought in the Amazon

From Woods Hole Research Institute: Click on image for larger view. (Left) Average dry-season enchanced vegetation index (EVI) across central South America for the period 2000–2008. Overlaid circles represent average vapor pressure deficit (VPD), a measure of the drying power of air, at 280 meteorological stations across the region for the period 1996–2005. (Right) Coefficient…

Georgia Tech: “50 percent of the [USA] warming that has occurred since 1950 is due to land use changes rather than greenhouse gases”

From a Georgia Tech Press Release: Reducing Greenhouse Gases May Not Be Enough to Slow Climate Change Georgia Tech City and Regional Planning Professor Brian Stone publishes a paper in the December edition of Environmental Science and Technology that suggests policymakers need to address the influence of global deforestation and urbanization on climate change, in…