Sentences with phrase «warming during the last decade»

May be this partly explains the slight slowdown in warming during the last decade, this is however uncertain because the sulfur dioxide emission for the last 5 years are not available.

I believe that locally climate has warmed during the last decade.

Not exact matches

Each of these phases lasted for decades, even as temperatures warmed overall during the course of the century.

In response, lakebed temperatures of Arctic lakes less than 1 meter (3 feet) deep have warmed by 2.4 degrees Celsius (4.3 degrees Fahrenheit) during the past three decades, and during five of the last seven years, the mean annual lakebed temperature has been above freezing.

Seasonal decreases in land precipitation since the 1950s are the main cause for some of the drying trends, although large surface warming during the last two to three decades has also likely contributed to the drying.

However, one of the panel's reservations was that ``... a statistical method used in the 1999 study was not the best and that some uncertainties in the work «have been underestimated,»...» The panel concluded «Based on the analyses presented in the original papers by Mann et al. and this newer supporting evidence, the committee finds it plausible that the Northern Hemisphere was warmer during the last few decades of the 20th century than during any comparable period over the preceding millennium.

... and there is a second impossibility compounding the first one: during the last few decades of accelerating global warming, the Sun has been very precisely monitored from space, and its brightness hasn't shown any discernable trend.

Thus it appears that, provided further satellite cloud data confirms the cosmic ray flux low cloud seeding hypothesis, and no other factors were involved over the past 150 years (e.g., variability of other cloud layers) then there is a potential for solar activity induced changes in cloudiness and irradiance to account for a significant part of the global warming experienced during the 20th century, with the possible exception of the last two decades.

# 46 ZH I am merely pointing out that your commentary on the temperature record points out that 2010 is not significantly warmer and is not an unamgiguous new record in the last decade, whereas the Foster and Rahmstorf while admitting their analysis shows «no sign of a change in the warming rate during the period of common coverage»

In the next 50 years, even the lower limit of impending climate change — an additional global mean warming of 1 degree Celsius above the last decade — is far beyond the range of climate variability experienced during the past thousand years and poses global problems in planning for and adapting to it.

However, they go out of their way to note that «we stress that solar variability is unlikely to be the prime cause of the strong warming during the last three decades».

Observations show a general increase in permafrost temperatures during the last several decades in Alaska, northwest Canada, Siberia and Northern Europe, with a significant acceleration in the warming of permafrost at many Arctic coastal locations during the last five years.

Solar activity has been the highest in the previous 4 centuries: http://www.climate4you.com/images/SolarIrradianceReconstructedSince1610%20LeanUntil2000%20From2001dataFromPMOD.gif The empirical data from peer reviewed science, Hatzianastassiou (2005), Goode (2007), Pinker (2005), Herman (2013), McLean (2014), shows that during the last 2 decades of the 20th century when most of the late 20th century warming occurred, the amount of solar radiation reaching the earth's surface increased by 2.7 W / m ² to 6.8 W / m ².

You write that Dr. Chu «admitted» that warming had plateaued during the last decade.

And warming of 4 C (7.2 F) would lead to far warmer summers; about nine out of 10 summers would be warmer than the warmest ever experienced during the last decades of the 20th century over nearly all land areas.

Yet last week in Geneva, at the UN's World Climate Conference — an annual gathering of the so - called «scientific consensus» on man - made climate change — Prof. Latif conceded the Earth has not warmed for nearly a decade and that we are likely entering «one or even two decades during which temperatures cool.»

Indeed, the last decade was the warmest on record, even though temperatures didn't keep climbing during that period.

For instance, during the last, nearly two decades the climate has no more been warming, even though the CO2 content in atmosphere has been increasing like earlier.

From approximately 1926 on though, NOAA's warming and cooling adjustments give all appearances of not being the least bit random, but specifically designed to make historically documented warming periods cooler (such as the extreme warming of 1930s) and the more recent warming of the last two decades - made to appear even greater than reported during real - time.

Methane Hydrates» Melt - was first observed to be accelerating during the last decade, with sufficient ocean warming reaching the hydrates in the sea bed of continental shelves off Norway and eastern Canada, where the hydrate stocks are vulnerable to newly warmed currents.

The 25 D - O events during the last glacial, where temperatures rose and fell by 5 to 10 degrees C (10 - 15 degrees C for Greenland) within a span of decades that were «explained by internal variability of the climate system alone ``, deemed global in scale, and they occurred without any changes in CO2 concentrations, which stayed steady at about 180 ppm throughout the warming and cooling.

Seasonal decreases in land precipitation since the 1950s are the main cause for some of the drying trends, although large surface warming during the last two to three decades has also likely contributed to the drying.

Increases in GrIS melt and runoff during this past century warm period must have been significant and were probably even larger than that of the most recent last decade (1995 - 2006).»

''... worked with two sediment cores they extracted from the seabed of the eastern Norwegian Sea, developing a 1000 - year proxy temperature record «based on measurements of δ18O in Neogloboquadrina pachyderma, a planktonic foraminifer that calcifies at relatively shallow depths within the Atlantic waters of the eastern Norwegian Sea during late summer,» which they compared with the temporal histories of various proxies of concomitant solar activity... This work revealed, as the seven scientists describe it, that «the lowest isotope values (highest temperatures) of the last millennium are seen ~ 1100 - 1300 A.D., during the Medieval Climate Anomaly, and again after ~ 1950 A.D.» In between these two warm intervals, of course, were the colder temperatures of the Little Ice Age, when oscillatory thermal minima occurred at the times of the Dalton, Maunder, Sporer and Wolf solar minima, such that the δ18O proxy record of near - surface water temperature was found to be «robustly and near - synchronously correlated with various proxies of solar variability spanning the last millennium,» with decade - to century - scale temperature variability of 1 to 2 °C magnitude.»

Most of this rise comes from warming of the world's oceans and melting of mountain glaciers, which have receded dramatically in many places especially during the last few decades.

Doe this mean that the National Research Council should / will revisit their conclusion: «Based on the analyses presented in the original papers by Mann et al. and this newer supporting evidence, the committee finds it plausible that the Northern Hemisphere was warmer during the last few decades of the 20th century than during any comparable period over the preceding millennium»???

Since 1980, global temperature has warmed 0.175 Celsius per decade, which is 35 times as fast as the climate warmed during the fastest part of the last deglaciation.

The new analysis reveals that global trends in recent decades are higher than reported in the IPCC Fifth Assessment Report, and the central estimate for the rate of warming during the first 15 years of the 21st century is at least as great as the last half of the 20th century.

To point out just a couple of things: — oceans warming slower (or cooling slower) than lands on long - time trends is absolutely normal, because water is more difficult both to warm or to cool (I mean, we require both a bigger heat flow and more time); at the contrary, I see as a non-sense theory (made by some serrist, but don't know who) that oceans are storing up heat, and that suddenly they will release such heat as a positive feedback: or the water warms than no heat can be considered ad «stored» (we have no phase change inside oceans, so no latent heat) or oceans begin to release heat but in the same time they have to cool (because they are losing heat); so, I don't feel strange that in last years land temperatures for some series (NCDC and GISS) can be heating up while oceans are slightly cooling, but I feel strange that they are heating up so much to reverse global trend from slightly negative / stable to slightly positive; but, in the end, all this is not an evidence that lands» warming is led by UHI (but, this effect, I would not exclude it from having a small part in temperature trends for some regional area, but just small); both because, as writtend, it is normal to have waters warming slower than lands, and because lands» temperatures are often measured in a not so precise way (despite they continue to give us a global uncertainity in TT values which is barely the instrumental's one)-- but, to point out, HadCRU and MSU of last years (I mean always 2002 - 2006) follow much better waters» temperatures trend; — metropolis and larger cities temperature trends actually show an increase in UHI effect, but I think the sites are few, and the covered area is very small worldwide, so the global effect is very poor (but it still can be sensible for regional effects); but I would not run out a small warming trend for airport measurements due mainly to three things: increasing jet planes traffic, enlarging airports (then more buildings and more asphalt — if you follow motor sports, or simply live in a town / city, you will know how easy they get very warmer than air during day, and how much it can slow night - time cooling) and overall having airports nearer to cities (if not becoming an area inside the city after some decade of hurban growth, e.g. Milan - Linate); — I found no point about UHI in towns and villages; you will tell me they are not large cities; but, in comparison with 20-40-60 years ago when they were «countryside», many small towns and villages have become part of larger hurban areas (at least in Europe and Asia) so examining just larger cities would not be enough in my opinion to get a full view of UHI effect (still remembering that it has a small global effect: we can say many matters are due to UHI instead of GW, maybe even that a small part of measured GW is due to UHI, and that GW measurements are not so precise to make us able to make good analisyses and predictions, but not that GW is due to UHI).

Both wetland drying and the increased frequency of warm dry summers and associated thunderstorms have led to more large fires in the last ten years than in any decade since record - keeping began in the 1940s.9 In Alaskan tundra, which was too cold and wet to support extensive fires for approximately the last 5,000 years, 105 a single large fire in 2007 released as much carbon to the atmosphere as had been absorbed by the entire circumpolar Arctic tundra during the previous quarter - century.106 Even if climate warming were curtailed by reducing heat - trapping gas (also known as greenhouse gas) emissions (as in the B1 scenario), the annual area burned in Alaska is projected to double by mid-century and to triple by the end of the century, 107 thus fostering increased emissions of heat - trapping gases, higher temperatures, and increased fires.

Ok, so then are you saying that if we follow my rule for picking decades of only allowing years that are multiples of ten when specifying ranges, the last decade warmed almost as fast as the previous one, but if we follow your rule of only allowing years that are congruent to 1 mod 10, per the fencepost error that makes the year 1990 part of the 1980's, then the warming paused during the last decade?

Strong evidence suggests that crops are easily damaged by high temperatures during their germination season, and that warming over the last three decades has already reduced crop yields.

Responding to and in the manner of KK Tung's UPDATE (and, you can quote me): globally speaking the slowing of the rapidity of the warming, were it absent an enhanced hiatus compared to prior hiatuses, must at the least be interpreted as nothing more than a slowdown of the positive trend of uninterrupted global warming coming out of the Little Ice Age that has been «juiced» by AGW as evidenced by rapid warming during the last three decades of the 20th Century, irrespective of the fact that, «the modern Grand maximum (which occurred during solar cycles 19 — 23, i.e., 1950 - 2009),» according to Ilya Usoskin, «was a rare or even unique event, in both magnitude and duration, in the past three millennia [that's, 3,000 years].»

«The strong warming effect that we experienced during the last decades will be interrupted.

Assuming the rate of forced warming has not changed during the period concerned, then the two combined must be roughly twice the forced warming during the last two and half decades of the 20th century.

However, the Prudent Path authors fail to reference a recent paper (Kaufmann et al. 2009) which analyzed Arctic temperature changes over a 2000 year period (0 to 1999 AD) and concluded that «the most recent 10 - year interval (1999 - 2008) was the warmest of the past 200 decades» and that «4/5 of the warmest decades occurred during the last century».

2 degrees Celsius per decade recorded by satellites during the late 20th century falls within known natural rates of warming and cooling over the last 10,000 years.

During the talk, I showed the following graph of the Earth's total heat content, demonstrating that even over the last decade when surface temperature warming has slowed somewhat, the planet continues to build up heat at a rate of 4 Hiroshima bomb detonations worth of heat every second.

The divergence observed during the last decades is likely due to (1) an additional anthropogenic warming component, which was quite significant during the last decades, and (2) to the necessity of using a more advanced model to obtain the temperature signature of the solar variability.

«When the fluctuations in temperature over the last 32 years (which tend to obscure the continuation of the global warming trend) are accounted for, it becomes obvious that there has not been any cessation, or even any slowing, of global warming over the last decade (or at any time during this time span).

The thermometers showed cooling over the last decade not a period during which «warming was not very large».]

These cold winters we have been having lately might stop them spreading, and in fact will benefit our native British species as several invasives have spread due to the warmer winters we experienced during the last decade.

Only one (Meehl) voluntarily mentioned the pause, calling it a «hiatus» during which «warming was not very large over last decade or so».

The reason they can't do 1 year is ENSO, add to the problem El Nino warms the climate, an above average number of El Niño's during the last several decades, is it any wonder that climate models fail to address an alternative cause for global warming?

Honorable scientists with respect for the principles of the scientific method admit that even on a human scale the Earth has not warmed to any significant degree at over the last seventeen years going on two decades, during which time CO2 increased.

Indeed, the model suggests aerosols likely account for 45 percent or more of the warming that has occurred in the Arctic during the last three decades.

In this paper, Broecker correctly predicted «that the present cooling trend will, within a decade or so, give way to a pronounced warming induced by carbon dioxide», and that «by early in the next century [carbon dioxide] will have driven the mean planetary temperature beyond the limits experienced during the last 1000 years».

These authors conclude «While satellite MSU / AMSU observations generally support GCM results with tropical deep ‐ layer tropospheric warming faster than surface, it is evident that the AR4 GCMs exaggerate the increase in static stability between tropical middle and upper troposphere during the last three decades.»