by Kenneth Richard, September 7, 2017 in NoTricksZone
This modern rate – just 0.17-0.18 of a meter per century – has remained relatively unchanged from the overall 20th century average, and there has been no statistically significant acceleration in the sea level rise rate (just 0.0042 mm/yr-²) since 1900.
by Paul Homewood, September 7, 2017 in ClimateChangeDispatch
(…)
In other words, there have now been four hurricanes as strong or stronger since 1980, about one every decade, and certainly nothing like the “unprecedented” impression left by the headlines.
And as we know, prior to Allen in 1980, we had very little in the way of measurements in mid-ocean.
A closer look at the Labor Day Hurricane of 1935, widely acknowledged to be by far the most powerful storm to hit the US, emphasizes this fact.
by Ross McKitrick, September 9, 2017 in GWPF
Don’t hold your breath: Even the best meteorologists in the world weren’t able to predict the development and track of Hurricane Harvey until a few days before it hit. (…)
by P. Gosselin, August 16, 2017 in NoTricksZone
Weather and climate analyst Schneefan here writes of “early frost” in the Arctic and how Greenland snow and ice have grown after being hit by a “snow bomb”. This contradicts the expectations of global warming alarmists.
The polar summer this year appears to have ended prematurely. The mean temperature of the central Arctic above 80°N has remained under the long-term average over the entire summer and even dipped below the freezing point about a week earlier than normal (1958-2002 mean).
by Uzbek, 7 février 2017, in ClimatoRéalistes
Il se produit en moyenne 300 catastrophes naturelles par an, soit presque une par jour ; nous en sommes informés en temps réel et la responsabilité du réchauffement est presque systématiquement invoquée. Il se diffuse ainsi dans l’opinion l’idée d’un dérèglement climatique qui irait en s’accentuant sous l’effet du réchauffement. Les différentes sources de données exploitées dans cet article sont convergentes : il n’y a pas d’augmentation de la fréquence , de l’intensité et de la durée des événements extrêmes depuis le début de l’ère industrielle, qu’il s’agisse des cyclones et des tempêtes, des inondations, des sécheresses et des vagues de chaleur . Cela est d’ailleurs admis par le GIEC dans son rapport spécial sur les événements extrêmes de 2012, et dans son 5ème rapport d’évaluation de 2013.
by Ph.D. Roy Spencer, August 29th, 2017 in GlobalWarming
As the Houston flood disaster is unfolding, there is considerable debate about whether Hurricane Harvey was influenced by “global warming”. While such an issue matters little to the people of Houston, it does matter for our future infrastructure planning and energy policy.
Let’s review the two basic reasons why the Houston area is experiencing what now looks like a new record amount of total rainfall, at least for a 2-3 day period over an area of tens of thousands of square miles.
by Michel de Rougemont, September 4, 2017 in WUWT
Various sources, scientists publishing their opinion in the media, claim that Tropical Storm Harvey, recently landed in Texas, is one more signal of the influence of global warming on such catastrophic events. These claims are based on model calculations. Let’s examine the facts.
by Kenneth Richard, August 31, 2017 in NoTricksZone
In the press release for a newly published and controversial peer-reviewed scientific paper, Australian scientist Dr. Jennifer Marohasy unveiled one of climate science’s better-kept secrets.
She and her colleagues are well aware that the post-1940s Northern Hemisphere (NH) proxy evidence from tree-rings, bore holes, pollen, etc., consistently fails to affirm sharply rising temperatures from the late 20th century onwards.
by P. Gosselin, September 1, 2017 in NoTricksZone
Way back in February, Global Weather Oscillations (GWO) veteran meteorologist David Dilley predicted that the 2017 Atlantic hurricane season would be “the most dangerous and costliest in 12 years for the United States.” (…)
by Paul Homewood, September 2, 207 in NotaLotofPeopleKnowThat
Indeed, it could be that the last 20-years of temperature recordings by the Bureau will be found not fit for purpose, and will eventually need to be discarded. This would make for a rather large hole in the calculation of global warming – given the size of Australia.
by UC Santa Cruz Newscenter, August 31, 2017 in WUWT
Changes in the sources of nitrogen and the composition of the phytoplankton community are more likely to account for the differences seen in the isotope data, Huckstadt said. “It looks more like a shift at the base of the food web, probably related to the transition from the Little Ice Age to current conditions, causing changes in the phytoplankton community,” he said.
See also: “Here we present new data from the Ross Sea, Antarctica, that indicates surface temperatures were ~ 2 °C colder during the LIA, with colder sea surface temperatures in the Southern Ocean and/or increased sea-ice extent, stronger katabatic winds, and decreased snow accumulation.”
by Paul Homewood, August 31,2017 in NotaLotofPeopleKnowThat
Greenland’s melt season ended a month ago, and since last September the ice sheet has grown at close to record rate.
Graph from here
by J. Sanderman et al., July 2017 in PNAS
Human appropriation of land for agriculture has greatly altered the terrestrial carbon balance, creating a large but uncertain car- bon debt in soils. Estimating the size and spatial distribution of soil organic carbon (SOC) loss due to land use and land cover change has been difficult but is a critical step in understand- ing whether SOC sequestration can be an effective climate mitigation strategy.
See also here
by Glenn A. Hodgkins et al., September 2017 in Journal of Hydrology
Trends in major-floods from 1204 sites in North America and Europe are assessed.
Trends based on counting exceedances of flood thresholds for groups of gauges.
The number of significant trends was about the number expected due to chance alone.
Changes in the frequency of major floods are dominated by multidecadal variability.
See also here
by P. Gosselin, August 29, 2017 in NoTricksZone
Here’s another blow to the global warming alarmist scientists, who have been claiming that the Medieval Warm Period was a local, North Atlantic phenomenon, and did not really exist globally. What follows is a report on yet another paper contradicting this now worn out claim.
See also here
by Ph.D. Roy Spencer, August 29, 2017 in GlobalWarming
As the Houston flood disaster is unfolding, there is considerable debate about whether Hurricane Harvey was influenced by “global warming”. While such an issue matters little to the people of Houston, it does matter for our future infrastructure planning and energy policy.
Let’s review the two basic reasons why the Houston area is experiencing what now looks like a new record amount of total rainfall, at least for a 2-3 day period over an area of tens of thousands of square miles.
by Tony Heller, August 28, 2017 in ClimateChangeDispatch
Summer isn’t quite over yet, but it was another cool summer in the US with afternoon temperatures continuing a 125-year cooling trend.
by Roger H. Bezdek, August 2017 in SciRes
Our findings indicate that the water intrusion problems in the region are due not to “sea level rise”, but primarily to land subsidence due to groundwater depletion and, to a lesser extent, subsidence from glacial isostatic adjustment. We conclude that water intrusion will thus continue even if sea levels decline. These findings are critical because the water intrusion problems in the Chesapeake Bay—and elsewhere—cannot be successfully solved unless their causes are correctly identified and appropriate remedies are devised.
by Roger Andrews, August 23, 2017 in Energy Matters (blog)
Between 2007 and 2015 total annual US CO2 emissions decreased by 740 million tons (12%). An updated analysis shows that 35% of this decrease was caused by natural gas replacing coal in electricity generation, 30% by lower fuel consumption in the transportation sector, 28% by renewables replacing
by Indiana University, August 17, 2017 in AAAS
There are models that predict that the interior of the East Antarctic ice sheet wouldn’t change very much, even if the West Antarctic ice sheet was taken away,” Licht said. According to these models, even if the ice sheet’s perimeter retreats, its core remains stable.
by J. Li, J. Dodson et al., March 1, 2017 in QuaternSciReviews
We suggest that solar activity may play a key role in driving the climatic fluctuations in North China during the last 22 centuries, with its quasi ∼100, 50, 23, or 22-year periodicity clearly identified in our climatic reconstructions.
We quantitatively illustrate that precipitation (67.4%) may have been more important than temperature (32.5%)…
by Anthony Watts, August 25, 2017, in WUWT
Harvey made landfall as a Category 4 ending the “major hurricane drought” we have been experiencing in the USA.
by Anthony Watts, August 25, 2017 in WUWT
(…) Maximum sustained winds are near 110 mph (175 km/h) with higher gusts. Some strengthening is possible, and Harvey is forecast to become a major hurricane before it reaches the middle Texas coast (…)
by Ron Clutz, August 25, 2017 in ClimateChangeDispatch
The animated image shown after the jump shows ice extents for day 233 from 2007 to 2017. Particularly interesting is the variation in the CAA (Canadian Arctic Archipelago), crucial for the Northwest Passage
by Susan Crockford, Polar Bear Science, 23 August 2017
What is causing the death of the polar bear as a climate change icon? Fat bears are part of it, but mostly it’s the fact that polar bear numbers haven’t declined as predicted.
