Sentences with phrase «specific humidity levels»
Well, orchids are notoriously difficult to raise — they require very specific humidity levels, fertilization, and light (as I can attest to firsthand).
http://www.scienceofrelationships.com/ 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.
I think you now are trying to prove something that (as Ten Hoeve et al say) is quite «understandable» and something that at a basic level nobody would disagree with (certainly while relative / specific humidity remains outwith the discussion).
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).
Q = specific humidity (at surface or on one or more atmospheric levels).
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.
Here, here, and here are specific humidity time plots for the tropics (25N to 25S, globally) for the 700mb, 500mb and 400mb levels, respectively.
Problem number two is the specific humidity of the 300mb level, shown here.
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)?
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.
Daily mean NCEP / NCAR reanalysis data are used as atmospheric forcing, i.e., 10 - m surface winds, 2 - m surface air temperature (SAT), specific humidity, precipitation, evaporation, downwelling longwave radiation, sea level pressure, and cloud fraction.
The decreasing specific humidity (especially at 300 and 400 mb levels) almost totally offsets the GHE of increasing CO2 content.
It's worth noting that specific humidity at the tropopause follows solar activity levels, not the rise of co2.
The latter effect acts to reduce CO2 sensitivity by increasing the aerosol - sensitive SW tau, increasing both cloud density and cover, decreasing upper tropospheric specific humidity and INCREASING SW albedo and will increasingly do so as the atmospheric level of CO2 rises!
The latter effect acts to reduce CO2 sensitivity by increasing the aerosol - sensitive SW tau, increasing both cloud density and cover, decreasing upper tropospheric specific humidity and SW albedo and will increasingly do so as the atmospheric level of CO2 rises!
There is increasing specific humidity at the lower levels, some decline in higher levels but the weighted average is constant.
It is also not surprising that the Tibetan plateau specific humidity at this pressure level is considerably higher than the zonal mean (3.5 - 4 times larger during the summer).
library (ncdf) ncep500 = open.ncdf («NCEP.nc») ncep500 [1] «file NCEP.nc has 4 dimensions:» [1] «lat Size: 73» [1] «level Size: 1» [1] «lon Size: 144» [1] «time Size: 361» [1] «----------------» [1] «file NCEP.nc has 1 variables:» [1] «short shum [lon, lat, level, time] Longname: Monthly Mean of Specific Humidity Missval: 32766 ″ nc500 = get.var.ncdf (ncep500) dim (nc500)[1] 144 73 361 nc25SN = nc500 -LSB-, mean (c (27:47)-RRB-,] dim (nc25SN)[1] 144 361 SN25 = colMeans (nc25SN) x = 1:361 lmSN25 = lm (SN25 ~ x) summary (lmSN25) acf (residuals (lmSN25)-RRB- $ acf [2][1] 0.5715495 plot (x, SN25, type =» b», main =» Specific Humidity 25S to 25N from 01/1979 to 01/2009 ″, xlab = «Months Starting at 01/1979 ″, ylab =» Secific Humidity», col =» dark red»)