Sentences with phrase «surface warming factors»

Dr. Kevin E. Trenberth 11 July 2014 Abstract Seasonal aspects of the recent pause in surface warming Factors involved in the recent pause in the rise of global mean temperatures are examined seasonally.

Not exact matches

While it is still possible that other factors, such as heat storage in other oceans or an increase in aerosols, have led to cooling at the Earth's surface, this research is yet another piece of evidence that strongly points to the Pacific Ocean as the reason behind a slowdown in warming.

Gerald Meehl, a climate scientist at the National Center for Atmospheric Research who was also an author on the paper, said this research expanded on past work, including his own research, that pointed to the Interdecadal Pacific Oscillation as a factor in a warming slowdown by finding a mechanism behind how the Pacific Ocean was able to store enough heat to produce a pause in surface warming.

Unusually warm surface water in the Gulf of Mexico — about 2 degrees Fahrenheit warmer than normal — may be a factor, he said.

And a third found that climate - induced sea - surface temperature anomalies over the northeast Pacific were driving storms (and moisture) away from California, but the warming also caused increased humidity — two competing factors that may produce no net effect.

A study examined three different factors: warmer - than - usual surface atmosphere conditions (related to global warming); sea - ice thinning prior to the melting season (also related to global warming); and an August storm that passed over the Arctic, stirring up the ocean, fracturing the sea ice and sending it southward to warmer climes.

As a general matter, yes, but AIUI the increasing height (depth) of the ice face is the key factor for accelerating retreat of these glaciers since it creates more surface area for the warm water to work on.

The gasses, released by burning of fossil fuels and land clearing among other factors, trap heat in the atmosphere and warm Earth's surface.

The first is to emphasize your point that degassing of CO2 from the oceans is not simply a matter of warmer water reducing CO2 solubility, and that important additional factors include changes in wind patterns, reduction in sea ice cover to reveal a larger surface for gas escape, and upwelling of CO2 from depths consequent to the changing climate patterns.

Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean currents -LRB-?)

... The research showed that somewhere around one - half of the warming in the U.N. surface record was explained by economic factors, which can be changes in land use, quality of instrumentation, or upkeep of records.

On the global warming context, it's worth noting that while sea surface temperatures are hot, a more important factor for hurricane intensification (among many) is «tropical cyclone heat potential» (which includes the temperature of deeper layers of seawater that get churned up as a tropical storm passes).

What the global change community (through the NRC and CCSP reports) always asserted and then used to discount the radiosonde and UAH satellite trends was that the deep troposphere should not warm less than the surface and in fact based on models globally the troposphere should warm 1.2 more (the amplification factor).

Although there have been many suggestions for possible contributions to the slowdown of the recent warming rate, a reduced warming rate of the Pacific sea surface temperature seems to be a significant factor.

However, to support the assertion that global warming is responsible for a great deal of damage from such events, it is sufficient to show that such events have the «signature» of global warming — for example, that specific global warming - related factors such as abnormally high sea surface temperatures, elevated water vapor levels, and altered jet stream patterns contributed to making Hurricane Sandy what it was — even if those factors can not be precisely quantified.

In the standards for middle school, for example, one of the core ideas is that «human activities, such as the release of greenhouse gases from burning fossil fuels, are major factors in the current rise in Earth's mean surface temperature («global warming»).»

National Center for Atmospheric Research and UCAR Office of Programs, «Drought's Growing Reach: NCAR Study Points to Global Warming as Key Factor,» press release (Boulder, CO: 10 January 2005); Aiguo Dai, Kevin E. Trenberth, and Taotao Qian, «A Global Dataset of Palmer Drought Severity Index for 1870 — 2002: Relationship with Soil Moisture and Effects of Surface Warming,» Journal of Hydrometeorology, vol.

The downwelling radiation from GHG's is a major factor in preventing the surface of the skin layer from cooling and this keeps the ocean warmer.

The question remains how much other factors have contributed to the surface warming slowdown.

However, Watanabe et al. (2013) suggests that these factors can't explain most of the slowed surface warming, which his study attributes to a more efficient transfer of heat to the deep oceans.

The warmth is eventually diluted into the frigid (3C) abyss by a factor of 10 to 1 (the ratio of cold abyssal water to warm surface water).

Other experts point out one of the biggest natural factors behind the plateau is the fact that in 2008 the temperature cycle in the Pacific flipped from «warm mode», in which it had been locked for the previous 40 years, to «cold mode», meaning surface water temperatures fell.

A new study published in Nature Climate Change found that by taking into account the short - term changes caused by factors like El Niño and La Niña cycles, they could accurately forecast the slowed warming at the surface several years in advance.

Surely this is a major factor in some surface temperature warming, plus massive sequestration of CO2 which eventually ends up on the ocean floor after the various food chain inhabitants have had their feed.

In short, the TCR is an estimate of how much global surface temperatures will warm immediately, without needing to consider factors like the thermal inertia of the oceans.

«This is ongoing research and bears watching as other factors as still under investigation, such as changes in the time - of - day readings were taken, but at this point it helps explain why the surface measurements appear to be warming more than the deep atmosphere (where the greenhouse effect should appear.)»

Surface warming from natural and anthropogenic factors may increase or decrease the rate of sea level rising, but only slightly.

External factors, like decreased solar and increased volcanic activity, have also played a role in the slowed surface warming, but internal variability due to ocean cycles appears to be the main culprit.

''... the world today is on the verge of a level of global warming for which the equilibrium surface air temperature response on the ice sheets will exceed the global mean temperature increase by much more than a factor of two.»

Internal variability has always been superimposed on top of global surface temperature trends, but the magnitude - as well as the fingerprints - of current warming clearly indicates that anthropogenic greenhouse gases are the dominant factor.

According to Klotzbach et al. (2010), which the Watts paper references, there should be an amplification factor of ~ 1.1 between surface and lower troposphere temperatures over land (greater atmospheric warming having to do with water vapor amplification).

The widespread mainstream media focus on the slowed global surface warming has led some climate scientists like Trenberth and Fasullo to investigate its causes and how much various factors have contributed to the so - called «pause» or «hiatus.»

A major factor that the «skeptics» are missing is the massive amount of heat which is going into the oceans, which is slowing the warming of the surface air, for the time being.

Thus it's not unexpected that surface temperature warming has slowed, and when we account for these factors, we see that the underlying long - term warming trend continues.

geometry: affects radiative, convective evaporative, and conductive heat transfer; urban geometries tend to selectively block or intensify winds, tend to impact the extent of greenspace, increase exposed surface area, change the sky view factor, add overall heat capacity when compared to rural areas; example — «The canyon structure that tall buildings create enhances the warming.

This factor more than increased sunlight will cause oceans to get warmer at surface.

Factor in the fact that soils amd water are at least ~ 1000 times more dense than air and the idea that gases can heat warmer surfaces like soils and especially water whilst most of the atmosphere is actually much colder just seems - well — ludicrous.

And your «Earth atmosphere is substantially warmed the same way» could allow for this - meaning earth is much same as venus other than a factor earth having surface warming.

When other factors are the same, it's likely that the surface is warmer in case of the dry column than in case of the moist column.

Any of these factors may contribute to a slowdown in surface warming over the past 16 years.

The consistent covariance of TLC reflection with surface temperature on timescales from seasonal to interannual and under global warming in climate simulations indicates that temperature is a key factor controlling TLC cover, and that similar processes likely govern the TLC response to warming across the timescales.

«For the doubled CO2 and the 2 % solar irradiance forcings, for which the direct no - feedback responses of the global surface temperature are 1.2 ° and 1.3 °C, respectively, the ~ 4 °C surface warming implies respective feedback factors of 3.3 and 3.0 (5).»

Long term conditions such as warmer - than - average sea - surface temperatures and low wind shear in the upper atmosphere are among the factors expected to fuel activity in coming years, forecasters say.

Since the scaling factor used is based purely on simulations by CMIP5 models, rather than on observations, the estimate is only valid if those simulations realistically reproduce the spatiotemporal pattern of actual warming for both SST and near - surface air temperature (tas), and changes in sea - ice cover.

However, Watanabe's research suggests that these factors can't explain most of the slowed surface warming, which his study attributes mainly to a more efficient transfer of heat to the deep oceans.

The results of this analysis indicate that observed temperature after 1998 is consistent with the current understanding of the relationship among global surface temperature, internal variability, and radiative forcing, which includes anthropogenic factors that have well known warming and cooling effects.

According to Gerry Bell, Ph.D., NOAA's lead seasonal hurricane forecaster, the major climate factors expected to influence this year's activity are the ongoing multi-decadal signal, which produces wind and atmospheric pressure patterns favorable for hurricane formation, along with ongoing warmer - than - normal sea surface temperatures.

Cooling 1950 - 80: US, Europe, Russia, NH No warming after 2000: China Smooth trend: South America, SH Although many more factors play a vital role (see Paul S» reply), one can clearly identify the aerosol effects in the surface temperature data.

I've seen lots of people make comments attributing 100 + % of the observed warming to humans, and they've pretty much all done so while claiming the «pause» is artificial — that the true amount of warming is being concealed by various factors (such as natural cycles or surface temperatures being a poor proxy for global warming).

Human activities, such as the release of greenhouse gases from burning fossil fuels, are major factors in the current rise in Earth's mean surface temperature (global warming).