Sentences with phrase «surface specific humidity»

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

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

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.

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

Not exact matches

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).

Q = specific humidity (at surface or on one or more atmospheric levels).

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

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)?

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.

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.

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.

Agreement among the relative - humidity datasets is quite reasonable, though not as good as for surface air temperature or specific humidity.

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

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 required bulk variables such as surface wind speed (W10) and specific air humidity (Qa10) at 10m height are both estimated from remotely sensed measurements.

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?

where L = latent heat of vaporization, ρ = density of air, qs = specific humidity at the surface, qr = specific humidity at a reference height, usually 10m, CDE = empirically measured aerodynamic humidity transfer coefficient (typically around 10 ^ -3 over the ocean), Ur = wind speed at the reference height.

Wind speed, cloud cover, and the gradient of specific humidity are the three most important meteorological parameters in determining surface flux.

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

But let's look at the long - term NOAA record of tropospheric specific humidity and compare this with the HadCRUT globally and annually averaged land and sea surface temperature anomaly over the same period:

The certification criteria include climate - specific values for the internal surface temperature factor (fRsi) which ensures the relative humidity is acceptable.