Sentences with phrase «mean precipitation over»

Druyan, L.M., M. Fulakeza, and P. Lonergan, 2007: The spatial variability of regional model simulated June - September mean precipitation over West Africa.

Not exact matches

The mean precipitation total is 5.3 mm, spread over an average of 2.5 wet days per month.

I understand this to mean that over time, there is a tendency to move upwards (to the right) along the cumulative probability curve, let's say, for annual extreme 1 - day precipitation.

The mean precipitation taken over area with precipitation for any given day can be considered as the wet - day mean precipitation and provides an indicator for the mean precipitation intensity.

The differences in the area of evaporation and precipitation has a similar effect as a funnel: if the mean evaporation over a large area is returned a smaller, then the mean intensity is amplified by the factor of.

Because latent heat release in the course of precipitation must be balanced in the global mean by infrared radiative cooling of the troposphere (over time scales at which the atmosphere is approximately in equilibrium), it is sometimes argued that radiative constraints limit the rate at which precipitation can increase in response to increasing CO2.

Further, precipitation over land is a small fraction of the total, so there's a lot of room for changes in precip there without altering the result on the global mean.

Now of course increased evaporation also means increased precipitation, but this tends to fall prematurely over the source of the evaporation — the oceans.

Decreases in precipitation over many subtropical areas are evident in the multi-model ensemble mean, and consistency in the sign of change among the models is often high (Wang, 2005), particularly in some regions like the tropical Central American - Caribbean (Neelin et al., 2006).

The net change over land accounts for 24 % of the global mean increase in precipitation, a little less than the areal proportion of land (29 %).

This criterion may not be satisfied if observations are available only over a short time period (as is the case for the vertical structure of clouds), or if the predictor is defined through low - frequency variability (trends, decadal variability), or if there is a lack of consistency among available datasets (as in the case for global - mean precipitation and surface fluxes).

At the same time, precipitation patterns are also changing all over the planet; in the Arctic, that means more erratic snowfall.

One year (August 1998ï ¿ 1/2 July 1999) of tropical rainfall estimates from the Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN) system were used to produce monthly means of rainfall diurnal cycles at hourly and 1ï ¿ 1/2 ï ¿ 1/2 1ï ¿ 1/2 scales over a domain (30ï ¿ 1/2 Sï ¿ 1/2 30ï ¿ 1/2 N, 80ï ¿ 1/2 Eï ¿ 1/2 10ï ¿ 1/2 W) from the Americas across the Pacific Ocean to Australia and eastern Asia.

Last year, the paper by Wentz et al. showed that over several parts of the world, mean annual precipitation has been on the rise with increasing temperature.

Depending on winter precipitation and the forest treatment schedule, mean annual increases in runoff from thinning of ponderosa forests across the Salt - Verde watersheds ranged from 4.76 to 15.0 million m3 (3,860 — 12,200 acre - feet) over a 35 - year treatment period, 6.18 to 23.4 million m3 (5,010 to 19,000 acre - feet) over 25 years, and 9.23 to 42.8 million m3 (7,480 to 34,700 acre - feet) over 15 years (Table 2).

Twelve - month running means of precipitation rate (mm / day) from January 1979 to May 2017 evaluated over NW, NE, SW and SE Europe for ERA - Interim, part of ERA5, JRA - 55, GPCC and (to March 2017) GPCP.

These twelve - month running - mean time series of precipitation amounts averaged over continental land areas and the European sub-regions include values from JRA - 55 and values available to date from ERA5, the reanalysis currently in production to supersede ERA - Interim.

Twelve - month running means of precipitation rate (mm / day) from 1979 to 2017 evaluated over NW, NE, SW and SE Europe for ERA - Interim, part of ERA5, JRA - 55, GPCC and (to March 2017) GPCP.

Winter precipitation (mean and extreme) variability and trends along the south coast and interior of Alaska appear to be closely related to variations in the PNA pattern over this timeframe, while El Nino / Southern Oscillation (ENSO) influences, through the Nino3 index, appear to be significant along the south coast alone.

Site environmental variables in 2007 — 13: daily precipitation (annual amounts noted); daily mean soil water content at 30 cm below surface (SWC); daily maximum vapor pressure deficit (VPD); daily mean air temperature over the forest canopy (Ta).

Monthly temperature, precipitation, 500hPa geopotential height, mean sea - level pressure and soil moisture over the entire globe are also output to assess larger scale weather systems.

Total seasonal precipitation and mean seasonal temperature averaged over Colorado, Utah, New Mexico, and Arizona (17); five - year running means, 1900 — 2008.

Over West Africa, AOGCM - simulated changes in annual mean precipitation are about 5 to 10 % larger than for atmosphere - only simulations, and in better agreement with data reconstructions (Braconnot et al., 2004).

«Indeed it is estimated that annual mean temperature has increased by over 2 °C during the last 70 years and precipitation has decreased in most regions, except the western part of the country, indicating that Mongolia is among the most vulnerable nations in the world to global warming.»

The areas with enhanced warming over the USA may also be caused by drier soils from reduced precipitation, although the poor model agreement in precipitation changes for this region means this conclusion is uncertain.

Climate, sometimes understood as the «average weather,» is defined as the measurement of the mean and variability of relevant quantities of certain variables (such as temperature, precipitation or wind) over a period of time, ranging from months to thousands or millions of years.