Sentences with phrase «increase in a warming western»

Climate change and the eco-hydrology of fire: will area burned increase in a warming western US?

Not exact matches

Overall, aquatic ecosystems in western North America are predicted to experience increasingly earlier snowmelt in the spring, reduced late spring and summer flows, warmer and drier summers, and increased water temperatures — all of which spell increased hybridization between these species.

While the pattern for Central and Western Europe was one of a consistent increase in flood risk, the study also found that flood risk may actually decrease with warmer temperatures in some countries in Eastern Europe, but those results also show a high degree of uncertainty.

A study assesses flood impacts for three scenarios — of 1.5 °C, 2 °C and 3 °C warming — and finds that most of Central and Western Europe will experience substantial increase in flood risk at all warming levels, and the higher the warming, the higher the risk.

Three of the four warmest years since 1900 have been years with El Niño — the phenomenon in which warm water from the western side of the equatorial Pacific sloshes east, increasing global temperatures.

As the climate has warmed, western forests have suffered both an increase in stress and increased beetle overwintering survival, which gives advantage to the bark beetles.

This shift from cool to warm in the North Atlantic has already had an impact; this past year at least 89,000 individual fires burned 9.5 million acres in the western U.S. Worse yet, forest management practices that have increased the number of trees in western woods — as well as relatively wet preceding decades — have put in place an abundance of fuel for future fires.

«There are characteristic patterns of increase and decrease, for example, in response to an El Nino event,» which is a cyclical climate event marked by warming waters in the western Pacific Ocean that has global impacts, Zwiers says.

«It confirms that the during the Medieval Warm Period between 1080 and 1430 the oscillation index was in an unusually prolonged positive phase, which brings increased rain to Scotland and drier conditions in the western Mediterranean,» says Baker, of the UNSW Connected Waters Initiative Research Centre.

Abstract — James L. Crowley — 12 November 2010 Effects of Rapid Global Warming at the Paleocene - Eocene Boundary on Neotropical Vegetation Temperatures in tropical regions are estimated to have increased by 3 ° to 5 °C, compared with Late Paleocene values, during the Paleocene - Eocene Thermal Maximum (PETM, 56.3 million years ago)......... eastern Colombia and western Venezuela.

MHW intensity between 1982 — 1998 and 2000 — 2016 increased in over 65 % of the global ocean, most notably in all five western boundary current regions, where the mean warming has been considerably faster than the global average39, and most mid-latitude ocean basins (Fig. 1e).

You can read a more recent discussion of the role the bark beetle and climate change are playing in burning down and reshaping the West in this National Wildlife Federation report, «Increased Risk of CatastrophicWildfires: Global Warming's Wake - Up Call for the Western United States.»

Hence, the projected regional warming and consequent increase in wildfire activity in the western United States is likely to magnify the threats to human communities and ecosystems, and substantially increase the management challenges in restoring forests and reducing greenhouse gas emissions.

In Relationships between Water Vapor Path and Precipitation over the Tropical Oceans, Bretherton et al showed that although the Western Pacific warmer surface waters increased the water in the atmosphere compared to the Eastern Pacific, rainfall was lower in the Western Pacific compared to the Eastern Pacific for equal amounts of water vapor in the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amountIn Relationships between Water Vapor Path and Precipitation over the Tropical Oceans, Bretherton et al showed that although the Western Pacific warmer surface waters increased the water in the atmosphere compared to the Eastern Pacific, rainfall was lower in the Western Pacific compared to the Eastern Pacific for equal amounts of water vapor in the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amountin the atmosphere compared to the Eastern Pacific, rainfall was lower in the Western Pacific compared to the Eastern Pacific for equal amounts of water vapor in the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amountin the Western Pacific compared to the Eastern Pacific for equal amounts of water vapor in the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amountin the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amountin the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amountin the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amounts.

Sea surface temperatures in the Western Pacific are well above climatology, and it has been argued that the warmth in the Western Pacific along with the lack of an equivalent long - term warming trend in the Eastern Pacific, increase the chances of a «super El Niño,» comparable to the two strongest El Niños of the past century, which occurred in 1998 and 1983.

«While La Niña [conditions in 2011] had a large role to play in the failure of the rains in East Africa, there is evidence that warming in the western Pacific — Indian Ocean warm pool has contributed to an increased frequency of droughts in this region,» the researchers note.

That being said, I recently critiqued a forestry paper that claimed global warming is responsible for increasing forest fire acreage in the Western U.S. here:

The AMV warming also leads to reduced rainfall over the western part of the US and Mexico and to a weak increase in rainfall over Europe during boreal winter (see figure).

Hence, the projected regional warming and consequent increase in wildfire activity in the western United States is likely to magnify the threats to human communities and ecosystems, and substantially increase the management challenges in restoring forests and reducing greenhouse gas emissions.

They reported that «no catastrophic hurricane of category 4 or 5 intensity has made landfall in the Western Lake [northern Florida] area during the last 130 year documentary record» but «If future climatic changes, whether or not related to the anticipated greenhouse warming, lead to a return of a «hyperactive» hurricane regime characteristic of the first millennium A.D., then the northeastern Gulf Coast is expected to experience a dramatic increase in the frequency of strikes by catastrophic hurricanes.»

For warming levels of 1 °C to 2 °C, the area burned by wildfire in parts of western North America is expected to increase by 2 to 4 times for each degree (°C) of global warming.»

With increasing drought and higher temperatures in the western U.S. climate scientists worry about increasing fire frequency by drying and warming landscapes.

Indeed, the map at which JAXA spokesman Sasano was pointing (see photo above) had been expected by most experts to show that western nations are to blame for substantial increases in atmospheric levels of carbon dioxide, causing global warming.

There may be as well a modest increase of thermal energy in the western Pacific warm pool.

During that same period, average annual rainfall in New South Wales declined by 3.6 inches (92 millimeters).3 Scientists think the decline in autumn rainfall in southeast Australia since the late 1950s may be partly due to increases in heat - trapping gases in Earth's atmosphere.3, 14 Major bushfires over southeast Australia are linked to the positive phase of an ocean cycle called the «Indian Ocean Dipole» — when sea surface temperatures are warmer than average in the western Indian Ocean, likely in response to global warming.15, 16

(5) explains the cause of the slowdown in global warming after around 2000 — cooling from increased Eastern SO2 emissions offset the warming caused by Western Clean Air efforts, resulting in a net slowdown in the rate of decreasing global SO2 emissions.

See how global warming increases the risk of forest fires in western Siberia — and find other hot spots threatened by higher air temperature on the Climate Hot Map.

In regards to the first question, J. Stroeve (personal communication) notes that in the present warmer climate state, the tendency for a negative AO winter pattern to promote increased transport of ice into the western Beaufort / Chukchi seas — a pattern that historically has helped to reduce summer ice loss — actually enhances summer ice losIn regards to the first question, J. Stroeve (personal communication) notes that in the present warmer climate state, the tendency for a negative AO winter pattern to promote increased transport of ice into the western Beaufort / Chukchi seas — a pattern that historically has helped to reduce summer ice loss — actually enhances summer ice losin the present warmer climate state, the tendency for a negative AO winter pattern to promote increased transport of ice into the western Beaufort / Chukchi seas — a pattern that historically has helped to reduce summer ice loss — actually enhances summer ice loss.

But many scientists believe the increase in wildfires in the Western United States is partly the result of tinder - dry forests parched by warming temperatures.

For example, mechanisms evaluated in this work revealed a cooling trend in Eurasia due to forest loss in western North America; this finding, however, contrasts with evidence of a warming trend in the Northern Hemisphere high latitudes with increased CO2 concentrations [45] that result in shifts in boreal forest range and disturbance regime [46].

While we can not assert with confidence whether this ongoing shift is part of natural ENSO variability or a manifestation of GHG - induced climate change [68], this increase in variance coincides with rising temperatures in the Western Pacific Warm Pool [23,69 — 71].

Recent years have seen a dramatic increase in the simultaneous occurrence of extremely cold winter days in the Eastern United States and extremely warm winter days in the Western U.S., according to a new study.

Increasing drought frequency and warming temperatures (fuel moisture) have also been positively associated with increased wildfire activity, particularly in Western North America [39,80 — 84].

Furthermore, with the recent increases of late season hurricanes reaching the northeastern region of the United States, Irene in 2011 and Sandy's recent landfall in New Jersey on October 29, 2012 and the record breaking temperatures we are now seeing in the western United States where temperatures are reaching within a few degrees of the hottest recorded temperature on earth, 134 degrees Fahrenheit, are more evidence that the global climate is changing possibly due to global warming.

Several studies focused on the Colorado River basin showed that annual runoff reductions in a warmer western U.S. climate occur through a combination of evapotranspiration increases and precipitation decreases, with the overall reduction in river flow exacerbated by human demands on the water supply.

What the report says about wildfires and climate change: The incidence of large forest fires in the western United States and Alaska has increased since the early 1980s and is projected to further increase as the climate warms, with profound changes to certain ecosystems.

Since 1970, average annual temperatures in the Western U.S. have increased by 1.9 ° F, about twice the pace of the global average warming.

The warming in Western Europe since about 1995 can be related to an increase of about +1 °C of the surface temperature of the North Atlantic — following an equivalent cooling over 1970 - 1995 - and an increase of the insolation with less aerosols.

As the climate changes in response to global warming, longer and more severe droughts are projected for the western US The resulting dry conditions will increase the pressure on groundwater supplies as more is pumped to meet demand even as less precipitation falls to replenish it.

http://www.sciencedaily.com/releases/2014/02/140202111055.htm «The satellite observations have shown that warming of the tropical Indian Ocean and tropical Western Pacific Ocean — with resulting increased precipitation and water vapor there — causes the opposite effect of cooling in the TTL region above the warming sea surface.

As temperatures have warmed, the prevalence and duration of drought has increased in the western U.S. and climate models unanimously project increased drought in the American Southwest.

The studies indicate that the observed pattern of mid-tropospheric warming in recent decades over west central Asia led to an increase in instability of the western winds thereby increasing WDs leading to a higher propensity for heavy precipitation over the western Himalayas.

Scientists at IITM's Centre for Climate Change and Research R K Madhura, R Krishnan, Jayashree Revadekar, M Mujumdar and B N Goswami published their paper, «Changes in western disturbances over western Himalayas in a warming environment» which talks of the increasing frequency of WDs — a low pressure system originating over the eastern Mediterranean sea and moves eastward.

The increased mid-Holocene solar heating in boreal summer leads to more warming in the western than in the eastern Pacific, which strengthens the trade winds and inhibits the development of ENSO (Clement et al., 2000, 2004).

Trying to figure out the increasing frequency of heavy precipitation over western Himalayas, the scientists said their analysis suggested that pronounced warming over the Tibetan plateau in recent decades due to elevation dependency of climatic warming signal favoured enhancement of meridianal temperature gradients.

Whether Global Warming is real or not, it is clear that current Western attempts to reduce CO2 emissions have achieved nothing but 1) Export their industry and jobs to India and China, 2) Increase the CO2 emissions there above what they were in Europe, Australia and North America, so that total emissions increase, and 3) Massively increase domestic electricity prices while enriching Chinese Solar Panel and Wind Turbine manufaIncrease the CO2 emissions there above what they were in Europe, Australia and North America, so that total emissions increase, and 3) Massively increase domestic electricity prices while enriching Chinese Solar Panel and Wind Turbine manufaincrease, and 3) Massively increase domestic electricity prices while enriching Chinese Solar Panel and Wind Turbine manufaincrease domestic electricity prices while enriching Chinese Solar Panel and Wind Turbine manufacturers.

Global warming may increase the frequency of intense hurricanes in the western Atlantic region during the 21st century.

«Indeed it is estimated that annual mean temperature has increased by over 2 °C during the last 70 years and precipitation has decreased in most regions, except the western part of the country, indicating that Mongolia is among the most vulnerable nations in the world to global warming.»