Sentences with phrase «of global atmospheric temperatures»

The international agreements forming the IPCC and the UNFCCC were designed to prevent greenhouse gas warming of the atmosphere, and as those agreements were hammered out, two American scientists, Roy Spencer and John Christy, developed a method that uses data collected from weather satellites to produce science's first comprehensive measure of global atmospheric temperatures.

Water takes longer to heat up and cool down than does the air or land, so ocean warming is considered to be a better indicator of global warming than measurements of global atmospheric temperatures at the Earth's surface.

But the pause has persisted, sparking a minor crisis of confidence in the field... On a chart of global atmospheric temperatures, the hiatus stands in stark contrast to the rapid warming of the two decades that preceded it.

The research, by Chris de Freitas, a climate scientist at the University of Auckland in New Zealand, John McLean (Melbourne) and Bob Carter (James Cook University), finds that the El Niño - Southern Oscillation (ENSO) is a key indicator of global atmospheric temperatures seven months later.

Perhaps more telling is the fact that the JMA measure reveals no hiatus in the pace of global atmospheric temperature increase with all years since 1998 at or above the trend line.

It would have to be shown that the recent temperature record can be statistically significantly distinguished from the statistically significant warming signal, which can be detected when performing an analysis that uses data over multiple decades, from the mid-1970ies to present, or from the mid-1970ies up to the time, when the alleged change in the behavior of the global atmospheric temperature is supposed to have occurred.

The time constant of global atmospheric temperature change is about one month.

As a result, the maintenance of global atmospheric temperature is dependent upon the heat released from the oceans approximately matching any deficit of heat lost by the whole atmosphere to space daily.

Not exact matches

This «would create a persistent layer of black carbon particles in the northern stratosphere that could cause potentially significant changes in the global atmospheric circulation and distributions of ozone and temperature,» they concluded.

«People have thought about how forest loss matters for an ecosystem, and maybe for local temperatures, but they haven't thought about how that interacts with the global climate,» said co-author Abigail Swann, a UW assistant professor of atmospheric sciences and of biology.

Our record is also of interest to climate policy developments, because it opens the door to detailed comparisons between past atmospheric CO2 concentrations, global temperatures, and sea levels, which has enormous value to long - term future climate projections.»

Indeed, the team estimates that this cooling effect could reduce by two - thirds the predicted increase in global temperatures initiated by a doubling of atmospheric carbon dioxide.

Despite its smaller ash cloud, El Chichn emitted more than 40 times the volume of sulfur - rich gases produced by Mt. St. Helens, which revealed that the formation of atmospheric sulfur aerosols has a more substantial effect on global temperatures than simply the volume of ash produced during an eruption.

Now a group of American and British scientists have used a new chemical technique to measure the change in terrestrial temperature associated with this shift in global atmospheric CO2 concentrations.

Because air temperature significantly alters atmospheric dynamics, which in turn affects moisture transport, scientists speculate that this increase of high altitude moisture may be tied to global warming.

However, this has to a large extent not led to immediate action to address the severity of the imminent crisis of rising global temperatures and associated problems due to the increase in atmospheric carbon dioxide concentrations due to human activity.

Photosynthesis — the process green plants use to convert energy from the sun that plants use to grow — from tropical forests, plays a huge role in determining global atmospheric CO2 concentration, which is closely linked the global temperature and rate of climate change.

These little organisms are central to the global carbon cycle, a role that could be disrupted if rising levels of atmospheric carbon dioxide and warming temperatures interfere with their ability to grow their calcified shells.

The second simulation overlaid that same weather data with a «pseudo global warming» technique using an accepted scenario that assumes a 2 - to 3 - degree increase in average temperature, and a doubling of atmospheric carbon dioxide.

Their findings, based on output from four global climate models of varying ocean and atmospheric resolution, indicate that ocean temperature in the U.S. Northeast Shelf is projected to warm twice as fast as previously projected and almost three times faster than the global average.

«This emphasizes the importance of large - scale energy transport and atmospheric circulation changes in restoring Earth's global temperature equilibrium after a natural, unforced warming event,» Li said.

Yet there is no doubt that research into atmospheric aerosols is becoming increasingly important due to the effects that they can have on the global temperature of Earth, given that solar radiation is the main source of energy for Earth - Atmosphere system.

New measurements by NASA's Goddard Institute for Space Studies indicate that 2012 was the ninth warmest year since 1880, and that the past decade or so has seen some of the warmest years in the last 132 years.One way to illustrate changes in global atmospheric temperatures is by looking at how far temperatures stray from «normal», or a baseline.

Because of those uncertainties, researchers can estimate only that doubling atmospheric carbon dioxide from preindustrial levels would increase global temperature between 1 °C and 5 °C.

Turning up the heat seems to increase the rate at which the plants produce methane, Keppler says, which could explain why atmospheric levels of methane were high hundreds of thousands of years ago when global temperatures were balmy.

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

It is well - established in the scientific community that increases in atmospheric CO2 levels result in global warming, but the magnitude of the effect may vary depending on average global temperature.

By analyzing global water vapor and temperature satellite data for the lower atmosphere, Texas A&M University atmospheric scientist Andrew Dessler and his colleagues found that warming driven by carbon dioxide and other gases allowed the air to hold more moisture, increasing the amount of water vapor in the atmosphere.

Even if we could determine a «safe» level of interference in the climate system, the sensitivity of global mean temperature to increasing atmospheric CO2 is known perhaps only to a factor of three or less.

For example, he said, most participants recognized that carbon dioxide increases global temperatures, yet mistakenly indicated that rising levels of atmospheric CO2 are expected to «reduce photosynthesis in plants.»

The climate sensitivity classically defined is the response of global mean temperature to a forcing once all the «fast feedbacks» have occurred (atmospheric temperatures, clouds, water vapour, winds, snow, sea ice etc.), but before any of the «slow» feedbacks have kicked in (ice sheets, vegetation, carbon cycle etc.).

More than 90 % of global warming heat goes into warming the oceans, while less than 3 % goes into increasing the atmospheric and surface air temperature.

«The consensus is that a doubling of atmospheric CO2 from its pre-industrial revolution value would result in an average global temperature rise of (3.0 ± 1.5) °C.»

While ECS is the equilibrium global mean temperature change that eventually results from atmospheric CO2 doubling, the smaller TCR refers to the global mean temperature change that is realised at the time of CO2 doubling under an idealised scenario in which CO2 concentrations increase by 1 % yr — 1 (Cubasch et al., 2001; see also Section 8.6.2.1).

For as much as atmospheric temperatures are rising, the amount of energy being absorbed by the planet is even more striking when one looks into the deep oceans and the change in the global heat content (Figure 4).

These rising atmospheric greenhouse gas concentrations have led to an increase in global average temperatures of ~ 0.2 °C decade — 1, much of which has been absorbed by the oceans, whilst the oceanic uptake of atmospheric CO2 has led to major changes in surface ocean pH (Levitus et al., 2000, 2005; Feely et al., 2008; Hoegh - Guldberg and Bruno, 2010; Mora et al., 2013; Roemmich et al., 2015).

Not surprisingly, given that the surface ocean is responsible for much of atmospheric warming, ocean warming and global surface air temperatures vary largely in phase with one another.

Trenberth et al (2002) Evolution of El Nino — Southern Oscillation and global atmospheric surface temperatures (See note 1)

Polar amplification, in which temperatures at the poles rise more rapidly than temperatures at the equator (due to factors like the global atmospheric and oceanic circulation of heat from the equator to the poles), plays a major role in the rate of ice sheet retreat.

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?

Global positioning satellites (GPS); remote sensing for water, minerals, and crop and land management; weather satellites, arms treaty verifications; high - temperature, light - weight materials; revolutionary medical procedures and equipment; pagers, beepers, and television and internet to remote areas of the world; geographic information systems (GIS) and algorithms used to handle huge, complex data sets; physiologic monitoring and miniaturization; atmospheric and ecological monitoring; and insight into our planet's geological history and future — the list goes on and on.

Some global warming «skeptics» argue that the Earth's climate sensitivity is so low that a doubling of atmospheric CO2 will result in a surface temperature change on the order of 1 °C or less, and that therefore global warming is nothing to worry about.

If greenhouse gases were responsible for global temperature increases in recent decades, atmospheric physics require that higher levels of our atmosphere would show greater warming than lower levels.

Regarding your second comment, in point of fact temperature increase is linear with logarithmically increasing CO2: climate sensitivity, you may recall, measures global mean surface temperature increase per doubling of atmospheric concentration of CO2.

The CDR potential and possible environmental side effects are estimated for various COA deployment scenarios, assuming olivine as the alkalinity source in ice ‐ free coastal waters (about 8.6 % of the global ocean's surface area), with dissolution rates being a function of grain size, ambient seawater temperature, and pH. Our results indicate that for a large ‐ enough olivine deployment of small ‐ enough grain sizes (10 µm), atmospheric CO2 could be reduced by more than 800 GtC by the year 2100.

In other research around atmospheric dynamics of tidally locked exoplanets, there could be a situation where the world has efficient «air conditioning» — hot air from one hemisphere is distributed about the planet in such a way to balance global temperatures.

We use measured global temperature and Earth's measured energy imbalance to determine the atmospheric CO2 level required to stabilize climate at today's global temperature, which is near the upper end of the global temperature range in the current interglacial period (the Holocene).

First let's define the «equilibrium climate sensitivity» as the «equilibrium change in global mean surface temperature following a doubling of the atmospheric (equivalent) CO2 concentration.

Res — math.ku.dk ``... Evidence is mounting that changes in global surface temperature can be attributed to human activities that increase the atmospheric concentration of greenhouse gases and tropospheric sulfates [Sanier et al, 1996a, 1996b].

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...»