نتایج جستجو برای: widespread droughts and etc
تعداد نتایج: 16834645 فیلتر نتایج به سال:
Pancontinental droughts in North America, or droughts that simultaneously affect a large percentage of the geographically and climatically distinct regions of the continent, present significant on-the-ground management challenges and, as such, are an important target for scientific research. The methodology of paleoclimate-model data comparisons is used herein to provide a more comprehensive un...
Extreme droughts, heat waves, frosts, precipitation, wind storms and other climate extremes may impact the structure, composition and functioning of terrestrial ecosystems, and thus carbon cycling and its feedbacks to the climate system. Yet, the interconnected avenues through which climate extremes drive ecological and physiological processes and alter the carbon balance are poorly understood....
The monthly summer monsoon rainfall over the Homogeneous Indian Monsoon region (HI) that represents most of the variance of all-India monsoon rainfall is investigated using observational data from 1880 to 2002. Severe droughts in July occur mostly during El Niño events of the boreal summer monsoon season. They occurred frequently in the late 19th to early 20th century, rarely in the middle of t...
Atmospheric rivers (ARs) have, in recent years, been recognized as the cause of the largemajority of major floods in rivers all along the U.S. West Coast and as the source of 30%–50% of all precipitation in the same region. The present study surveys the frequencywith whichARs have played a critical role as a common cause of the end of droughts on the West Coast. This question was based on the o...
The causes of persistent droughts and wet periods, or pluvials, over western North America are examined in model simulations of the period from 1856 to 2000. The simulations used either (i) global sea surface temperature data as a lower boundary condition or (ii) observed data in just the tropical Pacific and computed the surface ocean temperature elsewhere with a simple ocean model. With both ...
Despite presenting approximately 26 examples for "Kawthar" in various interpretations, Seyyed Mohammad Hossein Tabatabai has considered the multiplicity of descendants of the Holy Prophet (PBUH) as the exclusive example of this verse. A review of the evidence shows that this view, despite its many positive points, suffers some ambiguities. Therefore, the scientific importance of Al-Mizan interp...
Since Bolinger’s [1] discovery that pitch cues accentual prominence in English, a tension has arisen between two strategies: equating accent with pitch excursions and relying on perception for identifying accented words. This paper investigates the relation between prominence judgments from untrained listeners and accentual labels produced by trained transcribers. Naïve speakers of English, Spa...
We performed a cognitive experiment in order to obtain evidence that prosody is used for the segmentation of continuous speech for understanding in real time. We assume that the cognitive unit in Japanese speech is the accentual phrase (AP) which is represented by low and high pitch patterns according to the Japanese accent rule. Meaningless speech which consisted of two APs was used as the exp...
[1] Severe droughts developed in theWest and Southeast of the U.S. starting early in 2007. The development of the droughts is well monitored and predicted by our model-based Drought Monitoring and Prediction System (DMAPS). Using the North America Land Data Assimilation System (NLDAS) realtime meteorological forcing and the Variable Infiltration Capacity (VIC) land surface model, DMAPS is capab...
Geophysical and sedimentary records from five lakes in Massachusetts reveal regionally coherent hydrologic variability during the Holocene. All of the lakes have risen since ~9.0 ka, but multicentury droughts after 5.6 ka repeatedly lowered their water levels. Quantified water level histories from the three best-studied lakes share >70% of their reconstructed variance. Four prominent low-water ...
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