Sentences with phrase «of seasonal precipitation»

The verification of seasonal precipitation forecasts for early warning in Zambia and Malawi.

Controlling for observed conditions, beliefs about global climate change had a large effect on perceptions of seasonal temperature, and smaller effects on perceptions of seasonal precipitation.»

Animation of seasonal precipitation forecast by CFS.

Assessing the quality of seasonal precipitation forecasts in Malawi and Zambia is challenging but necessary

Assessing the quality of seasonal precipitation forecasts in Malawi and Zambia is challenging but necessary

Not exact matches

«This is one of the most representative records of precipitation changes in the eastern Pacific, and it goes a good way toward explaining seasonal tropical rain band and El Niño dynamics,» said first author Daniel Nelson, who did the research for his UW doctorate in oceanography.

For example, the isotopic signatures of ice cores depend on the seasonal distribution of precipitation.

Seasonal changes in precipitation and water storage make it difficult for modelers to estimate water availability and impacts of interventions, and the effects of climate change can be difficult to tease out from other impacts like human activities.

«Hotspots show that vegetation alters climate by up to 30 percent: Engineers find strong feedbacks between the atmosphere and vegetation that explain up to 30 % of precipitation and surface radiation variance; study reveals large potential for improving seasonal weather predictions.»

«Looking at changes in the number of dry days per year is a new way of understanding how climate change will affect us that goes beyond just annual or seasonal mean precipitation changes, and allows us to better adapt to and mitigate the impacts of local hydrological changes,» said Polade, a postdoctoral researcher who works with Scripps climate scientists Dan Cayan, David Pierce, Alexander Gershunov, and Michael Dettinger, who are co-authors of the study.

While the majority of climate change scientists focus on the «direct» threats of changing temperatures and precipitation after 2031, far fewer researchers are studying how short - term human adaptation responses to seasonal changes and extreme weather events may threaten the survival of wildlife and ecosystems much sooner.

If there's a big volcanic eruption tomorrow, Robock said he could make predictions for seasonal temperatures, precipitation and the appearance of El Niño next winter.

Natural variation in precipitation influences snowmelt timing and the seasonal distribution of streamflow.

On a statewide and seasonal level, 2015 was a year of temperature and precipitation extremes.

Seasonal decreases in land precipitation since the 1950s are the main cause for some of the drying trends, although large surface warming during the last two to three decades has also likely contributed to the drying.

Broadly, seasonal average temperature and precipitation patterns limit both the length of the fire season and environmental conditions during the fire season.

Seasonal patterns of temperature and precipitation may be altered by climate change where you live.

Data analyses have found an increase of drought intensity at many locations [130]--[131] The magnitude of change depends on the drought index employed [132], but soil moisture provides a good means to separate the effect of shifting seasonal precipitation and confirms an overall drought intensification [37].

doi: 10.1130 / G23261A.1 v. 35 no. 3 p. 215 - 218 Abrupt increase in seasonal extreme precipitation at the Paleocene - Eocene boundary B Schmitz, V Pujalte — Geology, 2007 — geology.gsapubs.org A prominent increase in atmospheric CO2 at the Paleocene - Eocene boundary, ca. 55 Ma, led to the warmest Earth of the Cenozoic for ∼ 100 ky High - resolution studies of continental flood - plain sediment records across this boundary....

«During November 2011 - January 2012, there is an increased chance of above - average temperatures across the south - central U.S. with the odds favoring below - average temperatures over the north - central U.S.. Also, above - average precipitation is favored across the northern tier of states, excluding New England, and drier - than - average conditions are more probable across the southern tier of the U.S. (see 3 - month seasonal outlook released on 20 October 2011).»

This time, partially because of the impact of El Niño on precipitation and thus plant growth, the scientists foresee an accelerated rise, but an insufficient seasonal surge of photosynthesis to draw levels lower.

At the end of February, seasonal precipitation for the 2008 Water Year, which began on October 1, 2007, was well above average over much of the West.

Seasonal changes in precipitation need special attention in the mid latitudes because of the importance to the growing season and the portion of precipitation which runs off.

These shape the 4 - dimensional pattern of temperature and other changes — the patterns of circulation, latent heating, and precipitation will shift, as can the cycles driven the imposed diurnal and seasonal cycles in incident solar radiation; the texture of internal variability can also shift.

How are soil moisture, surface fluxes, and aerosol properties altered by deep convective precipitation events and seasonal accumulation of precipitation?

This study investigates the variability of convective and stratiform rainfall from 8 yr (1998â $ «2005) of Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR) and TRMM Microwave Imager (TMI) measurements, focusing on seasonal diurnal variability.

For the entire Northern Hemisphere, there is evidence of an increase in both storm frequency and intensity during the cold season since 1950,1 with storm tracks having shifted slightly towards the poles.2, 3 Extremely heavy snowstorms increased in number during the last century in northern and eastern parts of the United States, but have been less frequent since 2000.11,15 Total seasonal snowfall has generally decreased in southern and some western areas, 16 increased in the northern Great Plains and Great Lakes region, 16,17 and not changed in other areas, such as the Sierra Nevada, although snow is melting earlier in the year and more precipitation is falling as rain versus snow.18 Very snowy winters have generally been decreasing in frequency in most regions over the last 10 to 20 years, although the Northeast has been seeing a normal number of such winters.19 Heavier - than - normal snowfalls recently observed in the Midwest and Northeast U.S. in some years, with little snow in other years, are consistent with indications of increased blocking (a large scale pressure pattern with little or no movement) of the wintertime circulation of the Northern Hemisphere.5 However, conclusions about trends in blocking have been found to depend on the method of analysis, 6 so the assessment and attribution of trends in blocking remains an active research area.

As noted by Reager (2016) in A Decade of Sea Level Rise Slowed by Climate - Driven Hydrology, researchers had determined the seasonal delay in the return of precipitation to the oceans causes sea levels to oscillate by 17 ± 4 mm [~ 0.7 inches] per year.

Following the seasonal evolution of the precipitation climatology, increased precipitation extremes shift from the Central Great Plains in early summer to the Southwest in late summer.

Since essentially the entire geographic region experiences a qualitatively Mediterranean climate — with strongly seasonal precipitation and a very distinct (but globally uncommon) summer dry season — most of California's annual precipitation derives from a relatively small handful of major cool - season precipitation events.

Seasonal decreases in land precipitation since the 1950s are the main cause for some of the drying trends, although large surface warming during the last two to three decades has also likely contributed to the drying.

Using an ensemble of four high resolution (~ 25 km) regional climate models, this study analyses the future (2021 - 2050) spatial distribution of seasonal temperature and precipitation extremes in the Ganges river basin based on the SRES A1B emissions scenario.

Using modern spatiotemporal records of oxygen production and oxygen isotopes in terrestrial precipitation, the authors demonstrate that their proposed relationship is robust over the modern seasonal cycle.

Even where increases are projected, there can be short - term shortages due to more variable streamflow (because of greater variability of precipitation), and seasonal reductions of water supply due to reduced snow and ice storage.

There is no clear trend in seasonal precipitation when averaging over the whole of the European domain.

With this tool, you can compare changes in monthly, seasonal, and annual variability of parameters such as temperature, precipitation, and a variety of drought indices.

Vector wind analyses were computed to explain the composite seasonal precipitation anomaly results in terms of different circulation patterns associated with these two wet groups.

CAS = Commission for Atmospheric Sciences CMDP = Climate Metrics and Diagnostic Panel CMIP = Coupled Model Intercomparison Project DAOS = Working Group on Data Assimilation and Observing Systems GASS = Global Atmospheric System Studies panel GEWEX = Global Energy and Water Cycle Experiment GLASS = Global Land - Atmosphere System Studies panel GOV = Global Ocean Data Assimilation Experiment (GODAE) Ocean View JWGFVR = Joint Working Group on Forecast Verification Research MJO - TF = Madden - Julian Oscillation Task Force PDEF = Working Group on Predictability, Dynamics and Ensemble Forecasting PPP = Polar Prediction Project QPF = Quantitative precipitation forecast S2S = Subseasonal to Seasonal Prediction Project SPARC = Stratospheric Processes and their Role in Climate TC = Tropical cyclone WCRP = World Climate Research Programme WCRP Grand Science Challenges • Climate Extremes • Clouds, Circulation and Climate Sensitivity • Melting Ice and Global Consequences • Regional Sea - Ice Change and Coastal Impacts • Water Availability WCRP JSC = Joint Scientific Committee WGCM = Working Group on Coupled Modelling WGSIP = Working Group on Subseasonal to Interdecadal Prediction WWRP = World Weather Research Programme YOPP = Year of Polar Prediction

Data analyses have found an increase of drought intensity at many locations [130]--[131] The magnitude of change depends on the drought index employed [132], but soil moisture provides a good means to separate the effect of shifting seasonal precipitation and confirms an overall drought intensification [37].

It may happen that one of the models hind - casts correctly one of the parameters of interest for one the seasons, but never all significant parameters like the min and max temperatures and the seasonal precipitations for all seasons.

Causes of Robust Seasonal Land Precipitation Changes.

We are beginning to sound like a broken record here, but again, it is impossible to present reliable future projections for precipitations changes across the U.S. (seasonal or annual) from a collection of climate models which largely can not even get the sign (much less the magnitude) of the observed changes correct.

A set of long, nearly complete daily precipitation series for Alaska spanning the latter half of the 20th century has been analyzed for seasonal relationships between variations in mean, heavy, and extreme precipitation and large - scale atmospheric circulation variations at interannual, decadal, and secular timescales.

One sentence summary: A strengthened subtropical jet stream — which is the primary means by which El Niño brings increased precipitation to California — is unlikely to occur prior to winter due to the intrinsic seasonal cycle of temperature variations across the Pacific Basin.

The Aleppo pine (Pinus halepensis Miller) forest in Yatir, Israel, is such an extreme case, with a mean annual precipitation of 285 mm and 6 — 8 months of continuous seasonal drought (Grünzweig et al. 2003, Rotenberg and Yakir 2010).

This low precipitation period, on top of the steady seasonal drought, permitted an extreme drought stress study that acknowledges the important role of climate extremes (rather than changes in the mean) in tree function (Reyer et al. 2012).

As a result of soil and atmosphere feedbacks (Beljaars et al. 1996; Seneviratne et al. 2010), seasonal predictions of soil moisture content over the US can further increase the predictability of precipitation and atmospheric temperature variations for up to several months (Zeng et al. 1999; Kanamitsu et al. 2003; Koster and Suarez 2003; Yang et al. 2004; Dirmeyer et al. 2013).

(D) The unconditional probability of a — 1.5 SD seasonal precipitation anomaly (blue curve) and the conditional probability that a — 1.5 SD seasonal precipitation anomaly occurs in conjunction with a 1.5 SD seasonal temperature anomaly (red curve), for each of the four 3 - mo seasons.

This doesn't provide enough information for a continent where the seasonal cycle of precipitation has such socio - economic importance.

L'Heureux, M.L., Mann, M.E., Cook B.I., Gleason, B.E., Vose, R.S., Atmospheric Circulation Influences on Seasonal Precipitation Patterns in Alaska during the latter 20th Century, Journal of Geophysical Research, 109, D06106, doi: 10.1029 / 2003JD003845, 2004.