Sentences with phrase «evapotranspiration estimates»

Not exact matches

The laser equipment will eventually estimate daily evapotranspiration rates on a regional scale.

Researchers used two methods to track groundwater levels, traditional water balance estimates — which take into account surface water inflow like rainfall and snow melt, soil moisture capacity and evapotranspiration — and data from NASA's twin satellite system called GRACE (Gravity Recovery and Climate Experiment).

We estimate that removing 1 Pg C y − 1 via tropical afforestation would require at least 7 × 106 ha y − 1 of land, 0.09 Tg y − 1 of nitrogen, and 0.2 Tg y − 1 of phosphorous, and would increase evapotranspiration from those lands by almost 50 %.

I'm thinking for example of how we modeled a basic estimate of evapotranspiration using the temperature gradient derived from a surface and 1.5 meter temperature reading.

To overcome this problem, Karnauskas et al. adapted an engineering method for estimating the potential evapotranspiration to GCM output, enabling them to calculate an aridity change index (ACI) for 80 globally distributed island groups.

Islands smaller than the spatial resolution used in global climate models (GCMs)-- including French Polynesia, the Marshall Islands, and the Lesser Antilles — are difficult to assess because GCMs can only provide estimates of precipitation there, not potential evapotranspiration.

Gornitz et al. (1997) estimate that evapotranspiration of water from irrigated land leads to an increase in atmospheric water content and hence a fall in sea level of 0.14 to 0.15 mm / yr.

Sahagian et al. (1994) and Sahagian (2000) estimate that the reduced volumes of the Caspian and Aral Seas (and associated ground water) contribute 0.03 and 0.18 mm / year to sea level rise, on the assumption that the extracted water reaches the world ocean by evapotranspiration.