Sentences with phrase «specific humidity of»

If the relative humidity is held fixed as the air is warmed, the implied increase in specific humidity of the air will further increase the downward infrared flux, though it might somewhat decrease the latent flux.

As the ocean warms, more H2O (and CO2) will outgas, which will raise the specific humidity of the air thus leading to amplification of the GHG effect, and then spreading to land areas.

Problem number two is the specific humidity of the 300mb level, shown here.

Comparison shows a specific humidity of at least 1 g / Kg, ie, 1000 ppm by mass, through out the surface troposphere.

Not exact matches

Still, Hess cautioned, some exotics require special care: Reptiles need certain levels of temperature and humidity that vary according to the animal, and birds require specially - formulated diets specific to the type of bird.

Each shape forms under a specific set of temperature and humidity conditions.

In reality, there are many different types of snowflakes (as in the clich that «no two snowflakes are alike»); this differentiation occurs because each snowflake is a separate crystal that is subject to the specific atmospheric conditions, notably temperature and humidity, under which it is formed.

Namely these factors are CAPE, which is Convective Available Potential Energy, which is the maximum amount of energy that a rising parcel (which [is] an arbitrary amount of mass) can have as it's rising through the atmosphere; wind shear, which is the difference in wind [vectors] at the top and bottom of the atmosphere; and specific humidity, which is the ratio of water to the total mass of a moist system.

In order to do this, they preserved them for thirty months under specific conditions of room temperature and humidity.

These specific definitions of danger days and extreme caution days are part of the National Weather Service's Heat Index, which measures both temperature and relative humidity.

This clearly confuses relative humidity in the boundary layer (which determines evaporation) and specific humidity throughout the troposphere (which determines the strength of the water vapor feedback).

Six - hourly data fields for 2 m maximum temperature, minimum temperature, specific humidity, surface pressure, precipitation rate, water equivalent of actual snow depth and 10 m U and V wind components were summarized to daily data (Supplementary Table 2).

Herptiles most often inhabit microhabitats, areas of very specific biological components (temperature, humidity, lighting and decor).

Thus it is a measure of specific humidity (the total amount of water vapour in the parcel).

Specific humidity content of the air has increased, as expected as part of the conventional water vapor feedback, but in fact relative humidity also increased between 1950 and 1990, indicating a stronger water vapor feedback than given by the conventional assumption of fixed relative humidity.

In models it varies by a couple of percent over temperature changes that lead to specific humidity (the total amount of water) changing by much larger amounts.

And specific humidity has been increasing at all levels of the troposphere (IPCC AR4 3.4)(the stratosphere too, but that is a somewhat separate issue).

There is an observed trend of increasing specific humidity.

We expect, through the Clausius - Clapeyron equation, that the specific humidity will increase roughly 20 % in response to 3 degrees of warming provided the temperature and humidity vary in such a way as to keep the global relative humidity roughly constant.

The specific humidity (i.e. «concentration» of water) is proportional to the ratio of partial pressure of water vapor to total atmospheric pressure.

Clear sky recent observations suggest a positive feedback, that is an increase of specific humidity in upper troposphere (recent works of Allan, Soden, Wong, etc.) and a consequent diminution of OLR.

``... Using radiative kernels (43, 44) and the changes in specific humidity in the CMIP5 4 × CO2 forcing experiments, we calculate an SW water vapor feedback of +0.3 ± 0.1 W m − 2 K − 1.

Global rainfall increases typically cause an overall reduction of specific humidity (q) and relative humidity (RH) in the upper tropospheric levels of the broader scale surrounding convection subsidence regions.

The long - term NOAA record of tropospheric humidity from radiosondes and satellites shows that water vapor content (specific humidity) has decreased with warming.

So what if you calculate specific humidity based on 1940 instead of 1950 to 1981?

However, the critical threshold R C is independent of ɛ, and thus the calculation depends only on relatively robust averaged values of precipitation, net radiation, average temperature difference between land and ocean, specific humidity over ocean, and the natural constants ρ, L, and C p.

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.

Does anyone know why the only surface humidity field from the ERA - Interim dataset is 2m dew point and not the more commonly used fields of specific humidity and / or relative humidity (which are also available as pressure level fields)?

Consistent with reanalysis data (Fig. 4) and theoretical considerations (36, 39), continental rainfall is assumed to be proportional to the mean specific humidity within the atmospheric column The effect of an offset between these quantities does not change the model behavior qualitatively (see SI Appendix).

As a simple test for the model, we calculate the remaining quantity that is not used for the computation of α (t) and β (t), the specific humidity over land The resulting model estimate of the specific humidity q ′ L compares reasonably well (Fig.

where Cp is the specific heat of air at constant pressure, T is the air temperature, L is the latent heat of vaporization, and q is the specific humidity [Haltiner and Williams, 1980].

«Height - resolved measurements of specific humidity (q) and relative humidity (RH) are obtained from NASA's satellite - borne Atmospheric Infrared Sounder (AIRS)... The water - vapor feedback implied by these observations is strongly positive, with an average magnitude of λ q = 2.04 W / m2 / K, similar to that simulated by climate models.»

Most of the decrease is caused by a decrease in the specific humidity in the upper troposphere but hey... why mention that when you can scare the beeJesus out of people with pseudo-science.

We know that specific aspects of indoor air quality — such as the amount of CO2, VOCs, particulates and humidity in the air — have demonstrable impacts on student learning and human health more generally.7, 8

Therefore, we would assume that the relative humidity would be high and the specific humidity (the amount of water vapor) would be strongly dependent on temperature (see Part Two).

However, the strength of the correlation between specific humidity variations and the temperature variations at the same level appears to be strongly height dependent.

Overall, the variations of specific humidity correlate positively at all levels with the temperature variations at the same level.

As a consequence, any sea ice coverage ensemble forecast that uses the 2007 temperature and specific humidity fields as part of the input surface BCs will approximately have the 2007 sea ice minimum as the lower end estimate of the ensemble.

On earth our atmosphere nearly always has more than enough excess energy in the atmosphere to push it from 9.8 to 6.5 °C / km and most of that is due to the always - present specific humidity which merely altering the Cp which alters the instantaneous lapse rate.

With a couple of years of low sea surface temperature at the equator (where the bulk of the evaporation occurs) specific humidity has fallen strongly.

Specific humidity is the total mass of water vapor in a parcel of air divided by the mass of the moist air.

Hoskins: If the tropical near surface specific humidity over tropical land has not gone up (Fig 5) presumably that could explain why the expected amplification of the warming in the tropics with height has not really been detected.

«[T] he CMIP5 [climate model] results instead show an increase in temperature and a much subdued increase in specific humidity, which may be due to GHG - induced warming and subsequent increases in the water vapor holding capacity of the atmosphere, respectively.

The decreasing specific humidity (especially at 300 and 400 mb levels) almost totally offsets the GHE of increasing CO2 content.

tasmax — Maximum daily temperature near surface tasmin — Minimum daily temperature near surface rhsmax — Maximum daily relative humidity near surface rhsmin — Minimum daily relative humdity near surface huss — Average daily specific humidity near surface pr — Average daily precipitation amount at surface rsds - Average daily downward shortwave radiation at surface was — Average daily wind speed near surface uas — Average daily eastward component of wind near surface vas — Average daily northward component of wind near surface

A slight change of ocean temperature (after a delay caused by the high specific heat of water, the annual mixing of thermocline waters with deeper waters in storms) ensures that rising CO2 reduces infrared absorbing H2O vapour while slightly increasing cloud cover (thus Earth's albedo), as evidenced by the fact that the NOAA data from 1948 - 2008 shows a fall in global humidity (not the positive feedback rise presumed by NASA's models!)

With that caveat, the face - value 35 - year trend in zonal - average annual - average specific humidity q is significantly negative at all altitudes above 850 hPa (roughly the top of the convective boundary layer) in the tropics and southern midlatitudes and at altitudes above 600 hPa in the northern midlatitudes.

The main improvements with respect to V2 version flux products (Bentamy et al, 2008) are related to the improvements of the specific air humidity estimation from radiometer measurements, to the assessment of the surface winds retrieved from QuikSCAT scatterometers, and to the use of the new objective method allowing the calculation of flux analyses over the global oceans.

The averages of these seasonal trends are 0.20 C / decade and 0.07 hPa / decade which correspond to a specific humidity increase of 0.04 g / kg per decade and a relative humidity reduction of 0.5 % / decade.

BTW, the graph is of * specific * humidity (the actual moisture content of the air), not relative humidity.