by Univ. of California – Berkeley, February 21, 2019 in ScienceDaily
Based on new data published today in the journal Science, it seems increasingly likely that an asteroid or comet impact 66 million years ago reignited massive volcanic eruptions in India, half a world away from the impact site in the Caribbean Sea.
But it leaves unclear to what degree the two catastrophes contributed to the near-simultaneous mass extinction that killed off the dinosaurs and many other forms of life.
The research sheds light on huge lava flows that have erupted periodically over Earth’s history, and how they have affected the atmosphere and altered the course of life on the planet.
by JC Maurin, 22 février 2019 in ScienceCimatEnergie
Afin d’élaborer les indicateurs de température, on utilise des radiomètres MSU, AMSU ou ATMS embarqués sur des satellites, puis on construit l’indicateur à partir des mesures et de diverses corrections. On obtient ainsi un indicateur qui concerne la quasi-totalité du globe, contrairement aux indicateurs terrestres basés essentiellement (avant 1980) sur quelques milliers de stations américaines et européennes. Au sujet des mesures par satellites, et sans être spécialiste dans ce domaine, un physicien peut néanmoins donner quelques éléments d’appréciation qu’ignore parfois un lecteur intéressé par la climatologie. Le but de la seconde partie de l’article sera atteint si ce lecteur a appris des éléments nouveaux, il pourra ensuite approfondir la question par lui-même.
by Anthony Watts, February 21, 2019 in WUWT
NWS Las Vegas writes:
The Las Vegas Valley Snow Event: What happened? Did we see this coming? Yes and no. We had been seeing very small chances for snow in the valley for a few days, but it wasn’t until Sunday afternoon that the hi-resolution models were consistently indicating that western parts of the valley could see up to 3 inches and up to an inch elsewhere. That’s when the decision was made to issue the Winter Weather Advisory.
by K. Richard, February 21, 2019 in NoTricksZone
“Between 1900 and 2016, climatic trends were characterized by significant reductions in the maximum temperatures (−0.78°C/century; p = 0.001), significant increases in minimum temperatures (0.44 °C/century; p = 0.017) [overall -0.34°C/century], and increased annual precipitation (25.4 mm/century) indicative of a wetter and more temperate WV climate. Despite increasing trends of growing degree days during the first (p ≤ 0.015) and second half of the period of record, the long-term trend indicated a decrease in GDD [warm growing degree days] of approximately 100 °C/days.”
by Anthony Watts, February 19, 2019 in WUWT
That’s direct quote from Scott Adams in this video he posted yesterday. Well worth your time.
by P. Homewood, February 21, 2019 NotaLotofPeopleKnowThat
Surveys identified 25 coral species in West Hawaiʻi. Lobe coral (Porites lobata), one of the area’s most dominant species, proved to be the most resilient—with only 50% bleaching in 2015. Cauliflower corals (Pocillopora meandrina) were hardest hit—with 98% bleaching—but recent surveys show that they are beginning to recover.
by Don J. Easterbrook, 2011 in ScienceDirect
The Medieval Warm Period (MWP) was a time of warm climate from about 900 A.D. to 1300 A.D. when global temperatures were apparently somewhat warmer than at present. Its effects were evident in Europe where grain crops flourished, alpine tree lines rose, many new cities arose, and the population more than doubled. The Vikings took advantage of the climatic amelioration to colonize Greenland, and wine grapes were grown as far north as England where growing grapes is now not feasible and about 500 km north of present vineyards in France and Germany. Grapes are presently grown in Germany up to elevations of about 560 m, but from about 1100 A.D. to 1300 A.D., vineyards extended up to 780 m, implying temperatures warmer by about 1.0–1.4 °C (Oliver, 1973).
by P. Gosselin , February 19, 2019 in NoTricksZone
Readers should note that among climate modelers volcanoes and atmospheric aerosols have been a favorite way of fudging climate models to explain away inconvenient cooling periods that weren’t supposed to happen in a system that is supposed to be dominated by trace gas CO2.
Extratropical volcanoes influence climate more than assumed
Study shows surprisingly strong cooling after volcanic eruptions in mid and high latitudes
by P. Homewood, February 18, 2019 i
Here’s the text from the original page (my bolding).
The Sun is the primary forcing of Earth’s climate system. Sunlight warms our world. Sunlight drives atmospheric and oceanic circulation patterns. Sunlight powers the process of photosynthesis that plants need to grow. Sunlight causes convection which carries warmth and water vapor up into the sky where clouds form and bring rain. In short, the Sun drives almost every aspect of our world’s climate system and makes possible life as we know it.
Earth’s orbit around and orientation toward the Sun change over spans of many thousands of years. In turn, these changing “orbital mechanics” force climate to change because they change where and how much sunlight reaches Earth. (Please see for more details.) Thus, changing Earth’s exposure to sunlight forces climate to change. According to scientists’ models of Earth’s orbit and orientation toward the Sun indicate that our world should be just beginning to enter a new period of cooling — perhaps the next ice age.
Repost from JoNova
by Rod Liddle, February 17, 2019 in GWPF/SundaTimes
Such a hectic life these kids lead. On Friday, my lovely 13-year-old daughter was out on the streets of Canterbury with her schoolmates demanding something be done, right now, about climate change, because adults are letting us down and it’s our future and it isn’t fair that horrid right-wing old white men are deliberately destroying the planet.
The next day she was at Gatwick with her mum, off for a half-term ski trip to Norway. I hope she got the irony: all those emissions, just so she could have a chance to snap her femur in half. Still, at least she wasn’t going to the Alps, where the wilderness has been murdered by skiers, the mountains stripped of forest and festooned with lifts and blue runs created by snow machines. Is there a more environmentally ruinous pastime than skiing?
by Charles the moderator, February 16, 2019 in WUWT
Thomas Crowther identifies long-disappeared forests available for restoration across the world. He will describe how there is room for an additional 1.2 trillion new trees around the world that could absorb more carbon than human emissions each year. Crowther also describes data from thousands of soil samples collected by local scientists that reveal the world’s Arctic and sub-Arctic regions store most of the world’s carbon. But the warming of these ecosystems is causing the release of this soil carbon, a process that could accelerate climate change by 17%. This research is revealing that the restoration of vegetation and soil carbon is by far our best weapon in the fight against climate change.
The living parts of the planet make it unique from all other parts of the solar system, and they drive every aspect of biogeochemical cycling. It is essential that we represent these living processes into our understanding of current and future biogeochemical cycles in order to understand and predict climate change.
by P. Homewood, February 15, 2019
This story could very well be headlined: «When internet came to Novaya Zemlya».
Locals started to post photos and video of the more than 50 polar bears in their neighborhood. Over the last week, social media as well as online newspapers globally have gone mad over the news coming out from one of the remotest towns on the planet, the closed military settlement of Belushaya Guba.
The little-known town on the Russian Arctic archipelago have since last autumn been struggling with polar bears walking the streets and around the corners of apartment- and office buildings. Even walking by a baby-stroller inside an entrance, one of the video-recordings show.
Regional authorities have declared a state of emergency after the bears no longer react to noice- and light signals from guards trying to scare them off.
Belushaya Guba, like the entire Novaya Zemlya, is closed off military area. The newly upgraded air base Rogachevo is just a few kilometers outside of town.
by P. Gosselin, February 17, 2019 in NoTricksZone
Today any warming found anywhere almost always gets blamed on heat supposedly getting trapped by rising atmospheric CO2 concentrations. Moreover, activist scientists insist we ignore all other powerful factors such as solar and oceanic cycles.
In fact these activists have become so extreme that they insist that record cold today is caused by warming.
But as people learned already in the first grade, the earth’s surface warms when the sun shines on it, and tends to cool when clouds obstruct the sun.
Solar radiation at the surface has risen over the past decades
In Japan, the Japanese Meteorology Agency (JMA) has 8 stations that measure solar radiation reaching the surface, and many other for recording temperature.
Data from the 8 stations recording solar radiation are plotted since 1999 (i.e. 20 years) as follows:
Data source: JMA
by P. Gosselin, February 15, 2019 in NoTricksZone
A significant number of scientists say that the Earth’s climate is in large part impacted by solar activity, and less so by trace gas CO2 concentration. German scientists present new findings showing a link between solar activity and precipitation in Europe.
How Changes on the Sun Influences Rain
A balanced level of precipitation provides the basis for a wide range of economic and social activities in Europe. Particularly agriculture, drinking water supply and inland waterway transport are directly affected. However, the amount of rain fluctuates strongly from year to year. While it may pour torrentially in one year, rain may remain absent for weeks in other year. The population is used to this variability and usually knows how to deal with it.
But what is behind the strong changes? A system, or pure atmospheric noise?
by A. Watts, February 15, 2019 in WUWT
A provocative hypothetical question: What if the Moon was not there? Video follows.
This giant rock lights up the night and can even change colors. So what would we do without it? Would we all need night vision goggles? How would it affect the ocean tides? Our seasons? Or our sleep cycles? Or would the consequences be far more drastic?
As the closest celestial body to our planet, the moon exerts a gravitational pull that governs much of what happens here on Earth Take the sea, for example. If you like surfing, you can thank the moon when the moon’s gravitational pull tugs on our spinning Earth, the oceans respond, giving us high tides in some parts of the world, and low tides elsewhere.