Sentences with phrase «global atmospheric patterns»

Not exact matches

The US and global transportation systems rely on a deep understanding of atmospheric conditions and long - term weather patterns.

The timing of such uplift is important in helping scientists to understand how mountains form, how they erode and what impact this may have on global atmospheric circulation patterns and climate.

World weather patterns will also start to change, as a frigid Antarctic continent and the icy ocean currents that surround it play an important role in global atmospheric and oceanic circulation.

Climate models show the absence of a global atmospheric circulation pattern which bolsters high ocean temperatures key to coral bleaching

Weather patterns are generally described in regional terms but they do not occur in isolation because they are part of the global atmospheric system.

Global warming had increased the amount of atmospheric moisture available to condense into rain, and La Niña, a circulation pattern that can produce heavy rains in Pakistan, was in progress.

Much study has focused on the effects these rising carbon dioxide levels could have on weather patterns and global temperatures, but could elevated atmospheric CO2 levels negatively affect the nutritional value of the food we grow?

A water based system doesn't achieve much, as the oceans participate in weather and climate, but aren't the primary driving forces, which are global atmospheric circulation patterns and greenhouse gases etc..

Includes detailed information on the characteristics of the atmosphere, factors affecting wind, global atmospheric circulation systems, global pressure patterns and Hadley, Ferrel and Polar cells.

The abstract of the Ainsworth et al seems to provide some support for both TC and BPL: «Rising atmospheric [CO2] is altering global temperature and precipitation patterns, which challenges agricultural productivity,» yet «rising [CO2] provides a unique opportunity to increase the productivity of C3 crops...»

In sensitivity experiments the influence of removed orography of Greenland on the Arctic flow patterns and cyclone tracks during winter have been determined using a global coupled model and a dynamical downscaling with the regional atmospheric model HIRHAM.

However, if the loss of Arctic Sea ice has significantly changed global atmospheric circulation patterns, then we are dealing with a different system that has only been in existence since 2007, and we do not know how often to expect crop failures.

Mike's work, like that of previous award winners, is diverse, and includes pioneering and highly cited work in time series analysis (an elegant use of Thomson's multitaper spectral analysis approach to detect spatiotemporal oscillations in the climate record and methods for smoothing temporal data), decadal climate variability (the term «Atlantic Multidecadal Oscillation» or «AMO» was coined by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measurements).

A water based system doesn't achieve much, as the oceans participate in weather and climate, but aren't the primary driving forces, which are global atmospheric circulation patterns and greenhouse gases etc..

We need to be cognizant of everything from local - scale stable boundary layer micrometeorolgy and ocean unstable boundary layer turbulent processes to global oceanic and atmospheric circulation patterns such as the Arctic Oscillation and the Gulf Stream's seasonal evolution.

What's important here, and remains important, scientists say, is how the patterns of atmospheric and climatic change reveal the most about the involvement of greenhouse gases, not simply the change in global temperature.

Climate alarm depends on several gloomy assumptions — about how fast emissions will increase, how fast atmospheric concentrations will rise, how much global temperatures will rise, how warming will affect ice sheet dynamics and sea - level rise, how warming will affect weather patterns, how the latter will affect agriculture and other economic activities, and how all climate change impacts will affect public health and welfare.

That, combined with the change in location of the convection, cause drastic changes in global atmospheric circulation patterns.

The global atmospheric circulation has a number of preferred patterns of variability, all of which have expressions in surface climate.

Trenberth et al. (2005b) analysed global atmospheric mass and found four key rotated EOF patterns: the two annular modes (SAM and NAM), a global ENSO - related pattern and a fourth closely related to the North Pacific Index and the PDO, which in turn is closely related to ENSO and the PNA pattern.

When we talk about climate change, we're talking about the scientifically observable — and increasingly severe — changes in global climate patterns that became apparent in the mid-to-late twentieth century and can be attributed to the rising levels of atmospheric greenhouse gases (carbon dioxide, in particular) produced by human activities like burning fossil fuels.

E. Even the official «global temperature» record, which has been adjusted to promote global warming hysteria, has not followed the pattern of increased atmospheric concentrations of CO2, but rather has followed the pattern of natural causes, primarily solar activity and ocean cycles.

«The authors write that «the El Niño - Southern Oscillation (ENSO) is a naturally occurring fluctuation,» whereby «on a timescale of two to seven years, the eastern equatorial Pacific climate varies between anomalously cold (La Niña) and warm (El Niño) conditions,» and that «these swings in temperature are accompanied by changes in the structure of the subsurface ocean, variability in the strength of the equatorial easterly trade winds, shifts in the position of atmospheric convection, and global teleconnection patterns associated with these changes that lead to variations in rainfall and weather patterns in many parts of the world,» which end up affecting «ecosystems, agriculture, freshwater supplies, hurricanes and other severe weather events worldwide.»»

Working with a total of 2,196 globally - distributed databases containing observations of NPP, as well as the five environmental variables thought to most impact NPP trends (precipitation, air temperature, leaf area index, fraction of photosynthetically active radiation, and atmospheric CO2 concentration), Li et al. analyzed the spatiotemporal patterns of global NPP over the past half century (1961 — 2010).

By examining the spatial pattern of both types of climate variation, the scientists found that the anthropogenic global warming signal was relatively spatially uniform over the tropical oceans and thus would not have a large effect on the atmospheric circulation, whereas the PDO shift in the 1990s consisted of warming in the tropical west Pacific and cooling in the subtropical and east tropical Pacific, which would enhance the existing sea surface temperature difference and thus intensify the circulation.

Recent global climate change is also likely to affect large - scale atmospheric circulation patterns, with strong nonlinear feedbacks between thermodynamic and dynamic components of the climate system (10, 11).

We analyze spatial patterns of precipitation globally associated with forest loss by calculating shifts in the global tropical precipitation band, the Inter-Tropical Convergence Zone (ITCZ), associated with changes in cross-equatorial atmospheric heat transport using equation 2.21 from [33].

Forests can affect the global climate system by altering large - scale patterns in atmospheric waves and jet streams, a mechanism termed «teleconnection patterns» (e.g., [12, 15 — 19]-RRB-.

I was flattered when he asked me to review one of his early papers on the historic pattern of atmospheric CO2 and its relationship to global warming.

«The authors write that North Pacific Decadal Variability (NPDV) «is a key component in predictability studies of both regional and global climate change,»... they emphasize that given the links between both the PDO and the NPGO with global climate, the accurate characterization and the degree of predictability of these two modes in coupled climate models is an important «open question in climate dynamics» that needs to be addressed... report that model - derived «temporal and spatial statistics of the North Pacific Ocean modes exhibit significant discrepancies from observations in their twentieth - century climate... conclude that «for implications on future climate change, the coupled climate models show no consensus on projected future changes in frequency of either the first or second leading pattern of North Pacific SST anomalies,» and they say that «the lack of a consensus in changes in either mode also affects confidence in projected changes in the overlying atmospheric circulation.»»

As I have also noted in recent public comments, additional mechanisms have been identified by which changes in atmospheric circulation patterns that may be a result of global warming could be affecting droughts in the American West.

This change also shifts global atmospheric circulation patterns, causing rises in surface temperatures outside of the tropical Pacific.

I have compared it to water vapor levels, OLR, precipitation, rotation of the Earth, SOI, Pacific subsurface temperatures, Trade Winds, cloud patterns, precipitation, atmospheric angular momentum, the AMO, tropical / global temperatures, and the spatial distribution of those temperature changes.

In a paper on the Energy & Environmental Science web site (17/7/12), meteorologist John Ten Hoeve and environmental engineer Mark Jacobson, both at Stanford University in California have calculated that, based on estimates of the radioactive nuclides released at Fukuhima, a three - dimensional global atmospheric model for radioactive fallout patterns and the linear no - threshold (LNT) model for resultant cancers, there would be between 15 and 1100 linked cancer deaths, with their best estimate being 130 deaths.

The global pattern of atmospheric circulation on Mars shows many superficial similarities to that of Earth, but the root causes are very different.

The most likely candidate for that climatic variable force that comes to mind is solar variability (because I can think of no other force that can change or reverse in a different trend often enough, and quick enough to account for the historical climatic record) and the primary and secondary effects associated with this solar variability which I feel are a significant player in glacial / inter-glacial cycles, counter climatic trends when taken into consideration with these factors which are, land / ocean arrangements, mean land elevation, mean magnetic field strength of the earth (magnetic excursions), the mean state of the climate (average global temperature), the initial state of the earth's climate (how close to interglacial - glacial threshold condition it is) the state of random terrestrial (violent volcanic eruption, or a random atmospheric circulation / oceanic pattern that feeds upon itself possibly) / extra terrestrial events (super-nova in vicinity of earth or a random impact) along with Milankovitch Cycles.

Still no tropospheric hot spot near the equator, still no pronounced stratospheric cooling especially near the poles both of which are cornerstones of the global waming models, along with the more zonal (+ ao) atmospheric circulation pattern.

In fact, I conclude that we have inadequate observations of ocean or atmospheric circulation patterns until after the development of global satellite converge (~ 1979).

In general, the pattern of change in return values for 20 - year extreme temperature events from an equilibrium simulation for doubled CO2 with a global atmospheric model coupled to a non-dynamic slab ocean shows moderate increases over oceans and larger increases over land masses (Zwiers and Kharin, 1998; Figure 9.29).

Using a state - of - the - art data assimilation system and surface pressure observations, the Twentieth Century Reanalysis Project is generating a six - hourly, four - dimensional global atmospheric dataset spanning 1851 to 2014 to place current atmospheric circulation patterns into a historical perspective.

More heat in the Earth's system due to global warming is felt everywhere, and that includes the massive - scale patterns of atmospheric circulation that give us our weather.

Advance research on the interactions between arctic sea ice and global physical systems such snow cover extent, ocean and atmospheric circulation patterns, and mid-latitude effects.

That there seems to be a global pattern of variability in ocean and atmospheric indices — and biologies — with a similar temporal signature suggests the existence of a black swan.

While on first thought this might seem undesirable because we are looking for a global number, it might make sense to separate them due to the large difference in land / ocean ratio and the fact that atmospheric circulation patterns isolate them WRT shorter term changes.

Even seemingly small changes in global temperature have far - reaching effects on sea level, atmospheric circulation, and weather patterns around the globe.

Anthropogenic influences have contributed to observed increases in atmospheric moisture content in the atmosphere (medium confidence), to global - scale changes in precipitation patterns over land (medium confidence), to intensification of heavy precipitation over land regions where data are sufficient (medium confidence), and to changes in surface and subsurface ocean salinity (very likely).

Once North and South American continents walled off eastern from western hemispheres, global atmospheric - ocean circulation patterns apparently lent themselves to regularly recurring chill phases.

Climate scientists Charles Greene and Bruce Monger of Cornell University, writing earlier this year in Oceanography, provided evidence that Arctic icemelts linked to global warming contribute to the very atmospheric pattern that sent the frigid burst down across Canada and the eastern U.S.

According to the NOAA Climate Prediction Center, the U.S. government agency tasked with monitoring, assessing and predicting the El Niño Southern Oscillation, or ENSO, cycle (El Niño and La Niña), current global atmospheric circulation and precipitation patterns are consistent with ENSO - neutral conditions in the tropical Pacific.

In association with El Niño, the heat redistribution in the ocean creates a major reorganization of atmospheric convection, severely disrupting global weather patterns from Australia to India and from South Africa to Brazil.