Sentences with phrase «increases in global temperatures during»

The studies involved conclude that the minor increases in global temperatures during this period can be entirely explained using natural factors.

That increase is comparable to the increase in global temperature during the 20th century of about 0.6 °C.

There, to Nicol's amazement he found nothing apart from the oft quoted: «We believe that most of the increase in global temperatures during the second half of the 20th century was very likely due to increases in the concentration of atmospheric carbon dioxide».

Not exact matches

There are three main time scales to consider when it comes to warming: annual temperature variation from factors like warming in the Pacific Ocean during El Niño years, decadal temperature swings and long - term temperature increases from global warming.

A recent report by two leading nonprofits, the Rocky Mountain Climate Organization and the Natural Resources Defense Council, details how the 11 U.S. western states together have experienced an increase in average temperature during the last five years some 70 percent greater than the global average rise.

The increase in carbon dioxide levels recorded so far has played the most important role in pushing average global temperatures up by 1 °C (1.8 °F) during the last 200 years.

Global warming is desiccating the region in two ways: higher temperatures that increase evaporation in already parched soils, and weaker winds that bring less rain from the Mediterranean Sea during the wet season (November to April).

The agency last week warned in a report that more people will die during heat waves, freshwater supplies will shrink, and diseases will spread in coming years, among other impacts of increasing global temperatures.

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.

As a consequence, their results are strongly influenced by the low increase in observed warming during the past decade (about 0.05 °C / decade in the 1998 — 2012 period compared to about 0.12 °C / decade from 1951 to 2012, see IPCC 2013), and therewith possibly also by the incomplete coverage of global temperature observations (Cowtan and Way 2013).

The researchers analysed resting and active jumping oxygen consumption rates in snails exposed to seawater at the normal temperature of 29 °C and at the increased temperature of 34 °C, projected to be reached during the next 100 years due to global warming.

In the central United States, for example, observational data indicate that rainfall increased, surface air temperature decreased, and surface humidity increased during the summer over the course of the 20th century concurrently with increases in both agricultural production and global GHG emissionIn the central United States, for example, observational data indicate that rainfall increased, surface air temperature decreased, and surface humidity increased during the summer over the course of the 20th century concurrently with increases in both agricultural production and global GHG emissionin both agricultural production and global GHG emissions.

Terrell Johnson, reporting on a recent NASA publication concluding that deep ocean temperatures have not increased since 2005 (http://www.weather.com/science/environment/news/deep-ocean-hasnt-warmed-nasa-20141007): «While the report's authors say the findings do not question the overall science of climate change, it is the latest in a series of findings that show global warming to have slowed considerably during the 21st century, despite continued rapid growth in human - produced greenhouse gas emissions during the same time.»

«We also present a set of global vulnerability drivers that are known with high confidence: (1) droughts eventually occur everywhere; (2) warming produces hotter droughts; (3) atmospheric moisture demand increases nonlinearly with temperature during drought; (4) mortality can occur faster in hotter drought, consistent with fundamental physiology; (5) shorter droughts occur more frequently than longer droughts and can become lethal under warming, increasing the frequency of lethal drought nonlinearly; and (6) mortality happens rapidly relative to growth intervals needed for forest recovery.

Increases in Asian aerosol emissions have been suggested as one possible reason for the hiatus in global temperature increase during the past 15 years.

Had climate skeptics been editorializing about global climate in 1974 they would have taken every opportunity to point out to Plass that global temperature had not increased during the 18 years since Plass's 1956 paper.

Even as shorter trends, CO2 content in atmosphere follow global temperature trends and not visa versa, for instance during glasials and interglasial, including even the current interglasial Holocene, as I already in my comment above stated concerning the recent increase of CO2 content in atmosphere.

On balance the evidence shows that solar and oceanic variations are more likely the cause of recent observations of warming in the air than increasing CO2 in the air but the issue can soon be resolved by observing the global air temperature changes that occur during and after the extended cycle 23 and the probable weak cycle 24.

Also recognizable are numerous apparently natural climate variations, for example, strong temporary cooling in the North Atlantic from the 1950s through the 1970s, which contributed to the lack of global - mean temperature increase during that time.

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

3) In my comment https://judithcurry.com/2011/08/04/carbon-cycle-questions/#comment-198992 I have explained that during recent three decades the increase of CO2 content in atmosphere is controlled by the rising temperature of global sea surfacIn my comment https://judithcurry.com/2011/08/04/carbon-cycle-questions/#comment-198992 I have explained that during recent three decades the increase of CO2 content in atmosphere is controlled by the rising temperature of global sea surfacin atmosphere is controlled by the rising temperature of global sea surface.

«A peer - reviewed paper [Krivova et al.] published in the Journal of Geophysical Research finds that reconstructions of total solar irradiance (TSI) show a significant increase since the Maunder minimum in the 1600's during the Little Ice Age and shows further increases over the 19th and 20th centuries... Use of the Stefan - Boltzmann equation indicates that a 1.25 W / m2 increase in solar activity could account for an approximate.44 C global temperature increase... A significant new finding is that portions of the more energetic ultraviolet region of the solar spectrum increased by almost 50 % over the 400 years since the Maunder minimum... This is highly significant because the UV portion of the solar spectrum is the most important for heating of the oceans due to the greatest penetration beyond the surface and highest energy levels.

published in the Journal of Geophysical Research finds that reconstructions of total solar irradiance (TSI) show a significant increase since the Maunder minimum in the 1600's during the Little Ice Age and shows further increases over the 19th and 20th centuries... Use of the Stefan - Boltzmann equation indicates that a 1.25 W / m2 increase in solar activity could account for an approximate.44 C global temperature increase... A significant new finding is that portions of the more energetic ultraviolet region of the solar spectrum increased by almost 50 % over the 400 years since the Maunder minimum... This is highly significant because the UV portion of the solar spectrum is the most important for heating of the oceans due to the greatest penetration beyond the surface and highest energy levels.

Editors of the study conclude anthropogenic (manmade) greenhouse gases (GHG) «are not playing a substantial role» in global temperature increases during the past century, contrary to IPCC claims that human activities are to blame.

If this happens during northern winter, surface pressure falls in the Arctic (rising AO) the night jet stalls, NOx injection falls away, stratospheric ozone levels increase, the coupled circulation is invigorated and pressure falls at 50 - 60 ° north and this is associated with cloud loss (when global cloud cover is at its maximum value) and a strong rise in global sea surface temperature.

https://www.ncdc.noaa.gov/global-warming/temperature-change «CO2 - forced climate thresholds during the Phanerozoic» «Climate Sensitivity in the Geologic Past» «Synchronous Change of Atmospheric CO2 and Antarctic Temperature During the Last Deglacial Warming» «Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation&during the Phanerozoic» «Climate Sensitivity in the Geologic Past» «Synchronous Change of Atmospheric CO2 and Antarctic Temperature During the Last Deglacial Warming» «Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation&During the Last Deglacial Warming» «Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation&during the last deglaciation»

The surface air temperature increase in the southwestern United States was much larger during the last few decades than the increase in the global mean.

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).

Despite these reclassifications, the general conclusions are similar from previous work: (1) global temperature anomalies for each phase (El Niño, La Niña, and neutral) have been increasing over time and (2) on average, global temperatures during El Niño years are higher than neutral years, which in turn, are higher than La Niña years.

But this was during a time of comparatively slow global temperature increase at the rate of about 0.05 C per Century — not the current rate in the range of 1.5 to 2 C per Century, which is 30 to 40 times faster.

Paleoclimatological Context and Reference Level of the 2 °C and 1.5 °C Paris Agreement Long - Term Temperature Limits The Paris Agreement adopted in December 2015 during the COP21 conference stipulates that the increase in the global average temperature is to be kept well below 2 °C above «pre-industrial levels» and that efforts are pursued to limit the temperature increase to 1.5 °C above «pre-industrial levTemperature Limits The Paris Agreement adopted in December 2015 during the COP21 conference stipulates that the increase in the global average temperature is to be kept well below 2 °C above «pre-industrial levels» and that efforts are pursued to limit the temperature increase to 1.5 °C above «pre-industrial levtemperature is to be kept well below 2 °C above «pre-industrial levels» and that efforts are pursued to limit the temperature increase to 1.5 °C above «pre-industrial levtemperature increase to 1.5 °C above «pre-industrial levels.»

And so, over the decade, alarmist climate scientists tried to fool the public by stonewalling («it's the warmest decade on record,» which doesn't mean the decade was warming), denying the facts («the allegation that annual global mean temperatures stopped increasing during the past decade has no basis in reality»), or outright lying («the world is warming even more quickly than we had thought»).

``... results cast some doubts in the use of homogenization procedures and tend to indicate that the global temperature increase during the last century is between 0.4 °C and 0.7 °C...»

«bserved increases in ocean heat content (OHC) and temperature are robust indicators of global warming during the past several decades.

During the 1950s and 1960s, average global temperatures levelled off, as increases in aerosols from fossil fuels and other sources cooled the planet.

The confusion resulting from skewing trends is summarized in a recent study that concluded their «results cast some doubts in the use of homogenization procedures and tend to indicate that the global temperature increase during the last century is between 0.4 °C and 0.7 °C, where these two values are the estimates derived from raw and adjusted data, respectively.»

So the climatologists are not crazy to say that the positive feedback in the global - warming dynamic can lead to a factor of 3 in the final increase of temperature: That can be true, even though this feedback wasn't able to cook the Earth during previous periods of high CO2.

As expected, global temperatures have been increasing in a sporadic fashion since the end of the Little Ice Age during the 1800's.

So, based on these peer reviewed and generally accepted numbers, 20th century sea levels rose at a 25 % slower rate in the second half of the century than the first which, on any reasonable interpretation, contradicts the notion that global temperature increases during the last 50 years contributed to any sea level rise!»

And seems to me that this large increase of 2 C in global temperatures would probably include arctic polar ice melting in summer, so as to allow ice free travel in arctic during most summers.

«Working with data pertaining to 7450 cardiovascular - related deaths that occurred within Budapest, Hungary, between 1995 and 2004 — where the deceased were «medico - legally autopsied» — Toro et al. looked for potential relationships between daily maximum, minimum and mean temperature, air humidity, air pressure, wind speed, global radiation and daily numbers of the heart - related deaths... scientists report and restate their primary finding numerous times throughout their paper, writing that (1) «both the maximum and the minimum daily temperatures tend to be lower when more death cases occur in a day,» (2) «on the days with four or more death cases, the daily maximum and minimum temperatures tend to be lower than on days without any cardiovascular death events,» (3) «the largest frequency of cardiovascular death cases was detected in cold and cooling weather conditions,» (4) «we found a significant negative relationship between temperature and cardiovascular mortality,» (5) «the analysis of 6 - hour change of air pressure suggests that more acute or chronic vascular death cases occur during increasing air pressure conditions (implying cold weather fronts),» (6) «we found a high frequency of cardiovascular death in cold weather,» (7) «a significant negative relationship was detected between daily maximum [and] minimum temperature [s] and the number of sudden cardiovascular death cases,» and (8) «a significant negative correlation was detected between daily mean temperature and cardiovascular mortality.»

In a paper «Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation», Shakun et al. (Nature 2012) contend that rising temperature at the end of the last Pleistocene glaciation were preceded by increasing atmospheric CO2.

(Its most recent report, in 2007, concluded that most of the twentieth - century increase in global average temperatures was «very likely» due to human activities, and that world temperatures could rise between 1.1 and 6.4 °C during the twenty - first century.)

Scientific evidence strongly indicates that natural influences can not explain the rapid increase in global near - surface temperatures observed during the second half of the 20th 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.»

However, the available evidence does not indicate pronounced long - term changes in the Sun's output over the past century, during which time human - induced increases in CO2 concentrations have been the dominant influence on the long - term global surface temperature increase.

A key example of this balancing process concerns the best value of what is known as the climate sensitivity, that is the increase in global average temperature associated with a doubling of atmospheric carbon dioxide that, unless severe mitigating action is taken, is likely to occur during the second half of the 21st century.

During the late 20th century, a scientific consensus evolved that increasing concentrations of greenhouse gases in the atmosphere cause a substantial rise in global temperatures and changes to other parts of the climate system, [149] with consequences for the environment and for human health.

Couple that CO2 reduction with a possible drop of some 0.7 C in temperatures (assuming for the sake of argument that all temperature increase during the 20th century was caused by CO2), and the resulting picture in terms of global destruction of life might be rather huge.