Sentences with phrase «surface humidity increased»

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 emissions.

Not exact matches

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.

Surface specific humidity has generally increased after 1976 in close association with higher temperatures over both land and ocean.

A compilation of surface measurements of downward longwave radiation from 1973 to 2008 find an increasing trend of more longwave radiation returning to earth, attributed to increases in air temperature, humidity and atmospheric carbon dioxide (Wang 2009).

The layer will also gradually increase its humidity by evaporation of the ocean or lake surface, as well as by the effect of cooling itself.

First of all it is important to note that even pure greenhouse gas forcing will lead to a slight decrease in surface solar radiation (due to the concurrent increased humidity) and potential cloud feedbacks.

Now since relative humidity remains roughly constant at the ocean surface and the air's capacity to hold water increases with temperature, relative humidity will actually decrease over land, particularly as one enters the continental interiors.

CO2's effect of stimulating plant growth and increasing plant tolerance of aridity contributed to revegetating large areas of land that were desert at the LGM, compounding the effects of an increase in atmospheric humidity, reduced land / ocean surface ocean ration, and increased warmth, all of which combined caused the reduction of airborne dust and atmosperic albedo.

There will be Regionally / locally and temporal variations; increased temperature and backradiation tend to reduce the diurnal temperature cycle on land, though regional variations in cloud feedbacks and water vapor could cause some regions to have the opposite effect; changes in surface moisture and humidity also changes the amount of convective cooling that can occur for the same temperature distribution.

The 2009 State of the Climate Report of the US National Oceanic and Atmospheric Administration (NOAA) tells us that climate change is real because of rising surface air temperatures since 1880 over land and the ocean, ocean acidification, sea level rise, glaciers melting, rising specific humidity, ocean heat content increasing, sea ice retreating, glaciers diminishing, Northern Hemisphere snow cover decreasing, and so many other lines of evidence.

Even in areas where precipitation does not decrease, these increases in surface evaporation and loss of water from plants lead to more rapid drying of soils if the effects of higher temperatures are not offset by other changes (such as reduced wind speed or increased humidity).5 As soil dries out, a larger proportion of the incoming heat from the sun goes into heating the soil and adjacent air rather than evaporating its moisture, resulting in hotter summers under drier climatic conditions.6

Evaporation increases with rising surface temperature, decreasing relative humidity, and increasing surface wind speed.

Surface measurements of downward longwave radiation A compilation of surface measurements of downward longwave radiation from 1973 to 2008 find an increasing trend of more longwave radiation returning to earth, attributed to increases in air temperature, humidity and atmospheric carbon dioxide (WangSurface measurements of downward longwave radiation A compilation of surface measurements of downward longwave radiation from 1973 to 2008 find an increasing trend of more longwave radiation returning to earth, attributed to increases in air temperature, humidity and atmospheric carbon dioxide (Wangsurface measurements of downward longwave radiation from 1973 to 2008 find an increasing trend of more longwave radiation returning to earth, attributed to increases in air temperature, humidity and atmospheric carbon dioxide (Wang 2009).

Increasing the surface temperature over the ocean by 1 °C should increase the humidity of saturation and thus the absolute humidity by 8 percent.

A compilation of surface measurements of downward longwave radiation from 1973 to 2008 find an increasing trend of more longwave radiation returning to earth, attributed to increases in air temperature, humidity and atmospheric carbon dioxide (Wang 2009).

But, just in case you were semi-serious: With oceans covering 70 % of the earth's surface, you could never change atmospheric humidity — water vapor pressure is a function of atmospheric temperature, increasing as temperature rises.

Sufficient glacial expansion will reduce lower atmospheric humidity, reduce kinetic induction within the lower atmosphere and hence increase the «thermal gap» tween lower atmosphere and Surface.

«Trends in U.S. Surface Humidity, 1930 — 2010 -LSB-...] Increasing evidence from observations and climate models indicates that anthropogenic activity is increasing atmospheric moisture (Boucher et al. 2004; Willett et al. 2007; Santer et al. 2007; Min et Increasing evidence from observations and climate models indicates that anthropogenic activity is increasing atmospheric moisture (Boucher et al. 2004; Willett et al. 2007; Santer et al. 2007; Min et increasing atmospheric moisture (Boucher et al. 2004; Willett et al. 2007; Santer et al. 2007; Min et al. 2008).

The increase in relative humidity is due to warmer surface sea temperatures allowing greater evaporation and warmer polar conditions causing less condensation.

WebHubTelescope Bottom line is that the SURFACE specific humidity increased while the relative humidity decreased.

Typically, the risk of surface condensation and mould growth increases with internal humidity loads in buildings and / or reduced quality of the thermal envelope.

Air in clouds and immediately next to the ocean surface is at or near 100 % relative humidity, so as temperatures increase the absolute humidity there also increases.

Is this point only about the radiative characteristics of the H2O vapour, and the assumption that relative and / or specific humidity should rise thanks to CO2 - induced increased evaporation, which in turn would increase downwelling heat radiation — or just the part that slightly hotter surface (due to CO2) also emits more heat to be trapped by the vater vapour?

The average absolute humidity also increases between the clouds and the ocean surface with increasing temperatures.

Increasing humidity decreases the lapse rate (lapse rate feedback), allowing the upper atmosphere to warm more rapidly than the surface and more OLR to escape for a given rise in surface temperature.

It has increased the humidity of the atmosphere, altered the atmospheric vertical motion and associated cloud fields, and perturbed the longwave and shortwave radiative fluxes at the continental surface.

Therefore, assuming that the relative humidity remains about constant, the strength of the greenhouse effect will increase with surface temperature.

That is what happens when oceans naturally increase their emission of energy and the response of the air is exactly the same whether the warmer ocean surface is a result of enhanced energy emission from the ocean or enhanced energy in the air from another cause such as more humidity or more CO2.

That mechanism is missing in the GCMs, which increase specific humidity with surface temperature but keep cloud cover parameterized and constant.

Over the ocean, the observed surface specific humidity increases at 5.7 % per 1ºC warming, which is consistent with a constant relative humidity.

Climate models (for various obscure reasons) tend to maintain constant relative humidity at each atmospheric level, and therefore have an increasing absolute humidity at each level as the surface and atmospheric temperatures increase.

Philipona et al. (2004) measured the changes and trends of radiative fluxes at the surface and their relation to greenhouse gas increases and temperature and humidity changes measured from 1995 to 2002 at eight stations of the Alpine Surface Radiation Budget (ASRB) nsurface and their relation to greenhouse gas increases and temperature and humidity changes measured from 1995 to 2002 at eight stations of the Alpine Surface Radiation Budget (ASRB) nSurface Radiation Budget (ASRB) network.

The relative humidity increases as the surface temperature goes down, so it is directly related to the window staying warm.

During a dry winter, the reduction of aerosol concentrations in weekend days may overwhelmingly impact on the DTR through a direct effect, i.e. by increasing total solar irradiance near the surface and raising the daytime temperature and maximum temperature, and lowering relative humidity.

In the lower atmosphere, the available data points to increasing water vapor content, but because of large variations in local humidity from day to night, from day to day, and from season to season, no - one currently knows exactly how much more water vapor is going into the air (IPCC Working Group 1 Assessment Report 4, Chapter 3, «Observations: Surface and Atmospheric Climate Change», page 273).

And yes, greenhouse warming could be due to increased humidity, which in turn could be due to normal variability in the ocean surface temperature.

Eventually the surface will cool sufficiently to produce an observed reversion of the warming trend that increased the level of «humidity».

According to Isaac Held, climate models predict that the relative humidity over oceans will have to rise about 1 % (a 5 % increase in 1 — RH) to suppress surface evaporation which would otherwise rise at 7 % / degC and create a surface energy imbalance (because DLR increases with warming nearly as fast as OLR).

One study, published in today's edition of the journal Nature, found that the overall increase in worldwide surface humidity from 1973 - 99 was 2.2 %, which is due «primarily to human - caused global warming,» according to study co-author Nathan Gillett of the University of East Anglia, in Norwich, U.K.

Irrigation also leads to boreal winter (December - February) warming over parts of North America and Asia in the latter part of the century, due to enhanced downward longwave fluxes from increased near surface humidity.