Sentences with phrase «about precipitation change»

Glacier movement is used as a measure of temperature change, but it is also about precipitation change.

Not exact matches

It turns out that the steady dripping of water deep underground can reveal a surprising amount of information about the constantly changing cycles of heat and cold, precipitation and drought in the turbulent atmosphere above.

To see how increased temperatures might contribute to the reductions in the river's flow that have been observed since 2000, Udall and Overpeck reviewed and synthesized 25 years of research about how climate and climate change have and will affect the region and how temperature and precipitation affect the river's flows.

Uncertainty about rain, little uncertainty about sea level rise Climate change could also affect precipitation in California, though the two models USGS used in its research produced different results.

Sea surface temperatures are higher because of climate change, he said, adding about 5 to 10 percent to precipitation levels.

The westerlies in the Northern Hemisphere, which increased from the 1960s to the 1990s but which have since returned to about normal as part of NAO and NAM changes, alter the flow from oceans to continents and are a major cause of the observed changes in winter storm tracks and related patterns of precipitation and temperature anomalies, especially over Europe.

There is other evidence that changes in the Asian monsoon occurred about the time of the 1976 — 1977 climate shift (Wang, 2001) along with changes in ENSO (Huang et al., 2003; Qian et al., 2003), and declines in land precipitation are evident in southern Asia and, to some extent, in Southeast Asia (see Figure 3.14).

In 2012, a controversial study challenged previously accepted ideas about the mechanisms through which climate change will affect our weather: Warmer temperatures will result in more heat waves, hotter summers will bring worse droughts, the warmer atmosphere will hold more water, resulting in heavier precipitation and flooding.

This study advances understanding of the ice nucleation processes, especially under the presence of pollution emissions, which ultimately will contribute to knowledge about global changes in precipitation.

The same change, if driven by winter precipitation, would require about a 25 % decrease in local precipitation at this site.

The situation regarding glaciers on Mt. Kenya is probably more complicated than just a question about temperature — changes in precipitation pattern will also affect their mass balance.

R.E. Benestad (2002), Empirically downscaled multi-model ensemble temperature and precipitation scenarios for Norway, Journal of Climate Vol 51, No. 21, 3008 - 3027 R.E. Benestad (2003) What can present climate models tell us about climate change?

But changes in precipitation in the region — brought about by a combination of deforestation and warmer temperatures — are making things difficult to follow their traditional ways.

Chamovitz says that in our modern environment — with its global warming, changes in precipitation, and shifting populations — we need to learn from plants about how they respond to their environment and then adapt.

I have not read the paper, however there continues to be confusion about changes in monsoons (in this case), or ENSO [the El Niño - Southern Oscillation], etc. and the effects of those changes in terms of precipitation and other effects.

The increased temperatures and precipitation brought about by climate change have made it possible for beech trees to thrive in the northeastern U.S. and Southern Canada, and researchers say this is not a good thing.

Accordingly, there is less certainty about the changes in frequency and intensity of tropical cyclones on a regional basis than for temperature and precipitation changes.

For the entire Northern Hemisphere, there is evidence of an increase in both storm frequency and intensity during the cold season since 1950,1 with storm tracks having shifted slightly towards the poles.2, 3 Extremely heavy snowstorms increased in number during the last century in northern and eastern parts of the United States, but have been less frequent since 2000.11,15 Total seasonal snowfall has generally decreased in southern and some western areas, 16 increased in the northern Great Plains and Great Lakes region, 16,17 and not changed in other areas, such as the Sierra Nevada, although snow is melting earlier in the year and more precipitation is falling as rain versus snow.18 Very snowy winters have generally been decreasing in frequency in most regions over the last 10 to 20 years, although the Northeast has been seeing a normal number of such winters.19 Heavier - than - normal snowfalls recently observed in the Midwest and Northeast U.S. in some years, with little snow in other years, are consistent with indications of increased blocking (a large scale pressure pattern with little or no movement) of the wintertime circulation of the Northern Hemisphere.5 However, conclusions about trends in blocking have been found to depend on the method of analysis, 6 so the assessment and attribution of trends in blocking remains an active research area.

2: Our Changing Climate, Key Message 5).2 Regional climate models (RCMs) using the same emissions scenario also project increased spring precipitation (9 % in 2041 - 2062 relative to 1979 - 2000) and decreased summer precipitation (by an average of about 8 % in 2041 - 2062 relative to 1979 - 2000) particularly in the southern portions of the Midwest.12 Increases in the frequency and intensity of extreme precipitation are projected across the entire region in both GCM and RCM simulations (Figure 18.6), and these increases are generally larger than the projected changes in average precipitation.12, 2

Peer - reviewed literature about the effects of climate change are in broad agreement that air and surface water temperatures are rising and will continue to do so, that ice cover is declining steadily, and that precipitation and extreme events are on the rise.

For instance, Milly et al., 2003 (Open access) used computer simulations and results from the CMAP reanalysis of precipitation levels to calculate that climate - related changes in water storage on land were causing a sea - level rise of about 0.12 mm / year in the period 1981 - 1998 (although, they admitted they couldn't calculate an error bar for that estimate).

If somebody has actually directly shown to high precision how much evaporation and precipitation changes as a result of CO2 forcing then I think we all would have heard about it and the sensitivity debate would be over.

Finally, while economics may be critical to your definition of «catastrophic» anthropogenic global warming, economics says nothing about the science underlying the projections of sea level rise, the physics of Arctic amplification, changes to albedo that lead to greater warming that may lead to significant releases of methane clathrate deposits, regional projections of reduce (or enhanced) precipitation, and so on.

Your political views have nothing whatsoever to do with the physical facts of increasing CO2 due to our emissions, the warming that will cause (~ 1.1 C / doubling), the feedbacks that will occur (to a total of about 3C / doubling), crop movements, sea level rise, ocean acidification, precipitation changes, etc..

Changes in sea - surface temperatures (SSTs) also have an effect by bringing about associated changes in atmospheric circulation and precipiChanges in sea - surface temperatures (SSTs) also have an effect by bringing about associated changes in atmospheric circulation and precipichanges in atmospheric circulation and precipitation.

When I found that changes in observed precipitation were largest in autumn, and did not find the same patterns of precipitation in climate models outputs, I really became skeptical about the use of climate models.

The models are in better agreement when projecting changes in hurricane precipitation — almost all existing studies project greater rainfall rates in hurricanes in a warmer climate, with projected increases of about 20 % averaged near the center of hurricanes.

2: Our Changing Climate, Key Messages 5 and 6).4, 10 A range of model projections for the end of this century under a higher emissions scenario (A2), averaged over the region, suggests about 5 % to 20 % (25th to 75th percentile of model projections) increases in winter precipitation.

What the report says about precipitation, floods, and climate change: Detectable changes in flood frequency have occurred in parts of the United States, with a mix of increases and decreases in different regions.

In this article, we discuss what is known and not known about how climate change will alter extreme weather events beyond just the precipitation that they produce.

All three methods agreed that the effect of climate change was positive, making precipitation events like this about 40 % more likely, with a provisional 2.5 - 97.5 % confidence interval of 5 - 80 %.

Although, in the tropics, glacier mass balance responds sensitively to changes in precipitation and humidity (see Lemke et al., 2007, Section 4.5.3), the fast glacier shrinkage of Chacaltaya is consistent with an ascent of the 0 °C isotherm of about 50 m / decade in the tropical Andes since the 1980s (Vuille et al., 2003), resulting in a corresponding rise in the equilibrium line of glaciers in the region (Coudrain et al., 2005).

What about earthquake - induced elevation change, coastal erosion change following a cliff fall, temperature and precipitation change from variation in ocean currents, effects of ENSO, PDO and AMO, etc..?

Temperature is the sole focus in the debate about changing size of a glacier but precipitation is equally important.

But you can be surer about climate change than you can be sure about increased precipitation.

Over West Africa, AOGCM - simulated changes in annual mean precipitation are about 5 to 10 % larger than for atmosphere - only simulations, and in better agreement with data reconstructions (Braconnot et al., 2004).

... «reasonable to conclude that some caution is warranted about claiming that large changes to global precipitation have occurred during the last 150 years.»

To me, none of the Tiljander records seem to say much about climate changes (eg temperature or precipitation) going into the LIA.

Metro Vancouver's ability to adapt to climate change requires specific information on how changes in temperature and precipitation will play out locally, how expected changes may vary throughout the seasons, and about new climate extremes.

For instance, a precipitation record that is influenced by ENSO contains information about ENSO and hence regional temperatures, even if it is not locally reflecting temperature changes.

Controlling for observed conditions, beliefs about global climate change had a large effect on perceptions of seasonal temperature, and smaller effects on perceptions of seasonal precipitation.»

With regard to proxy studies, same basic questions, are these direct or passive correlations, what evidence that tree ring core thickness depends only on temperature (what about precipitation, cloud cover, volcanic activity, sea surface temperatue changes, sea current changes, solar irradiance changes, cloud cover, etc.) How are these variables accounted for when analysis of ice cores is completed, or for that matter when computer models, and / or proxy studies are completed.

It seems clear to me that the sentence is about responses to a shift from one climate regime, the recent past and present day, to another, with less precipitation, in the future (it is the IPCC climate change impacts report after all, and they do say `... not necessarily producing gradual changes between the current and the future situation»).