Sentences with phrase «specific air humidity»

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.

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.

Not exact matches

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.

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.

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.»

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.

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

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.

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

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

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

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.

We know R1 + R2 = R = εσT ^ 4 We could use a «bulk equation» for L if we knew the air temperature & specific humidity + wind speed at reference heights.

Specific Humidity: Ratio of the mass or weight of water vapor in the air to a unit of air including the water vapor — grams of water vapor per kilogram of wet air.

Water vapor is thereafter transported by the large - scale circulation, which conserves the specific humidity (the ratio of the mass of water vapor to the total mass in a unit volume of air), except during subsequent saturation events, when loss of water occurs instantaneously to prevent supersaturation [Ed: that would be a fancy way of saying it rains?].

In poorly sampled regions random sampling errors amount to 2.5 ° — 3 °C for air temperature, 3 m s 1 for the wind speed, 2 — 2.5 g kg 1 for specific humidity, and 15 % — 20 % of the total cloud cover.

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.