نتایج جستجو برای: droughts

تعداد نتایج: 12187  

2004
Celine Herweijer Richard Seager Edward R. Cook

Unlike the major droughts of the twentieth century that are readily identified in the instrumental record, similar events in the nineteenth century have to be identified using a combination of proxy data, historical accounts and a sparse collection of early instrumental records. In the USA, three distinct periods of widespread and persistent drought stand out in these records for the latter hal...

2011
Corey Garriott

This paper studies a financial exchange in which liquidity may “dry up” endogenously. The drought is generated on a model of a limit order book under conditions of asymmetric information and an evolving fundamental. The book exhibits an equilibrium spread that is in steady state when it balances the rate that traders acquire information with the rate at which their stock of information decays. ...

Journal: :Remote Sensing 2017
Xun Jiang Angela Kao Abigail Corbett Edward Olsen Thomas S. Pagano Albert Zhai Sally Newman Liming Li Yuk Yung

Using CO2 data from the Atmospheric Infrared Sounder (AIRS), it is found for the first time that the mid-tropospheric CO2 concentration is ~1 part per million by volume higher during dry years than wet years over the southwestern USA from June to September. The mid-tropospheric CO2 differences between dry and wet years are related to circulation and CO2 surface fluxes. During drought conditions...

Journal: :Monthly Weather Review 1916

Journal: :Geophysical Research Letters 1996

A Malekian, M Kazemzadeh

In this paper, we analyzed the streamflow droughts based on the Percent of Normal Index (PNI) and clustering approaches in the Kurdistan Province, Iran, over the 1981-2010. The Kolmogorov-Smirnov (K-S) test was considered for streamflow time series and the results of K-S test indicated that streamflow time series did follow the normal distribution at the 0.05 significance level. Generally, the ...

2013
Kollukuduru Sravanthi

Increasingly in the recent past, the focus on climate change is moving towards the understanding of the occurrence, both in magnitude and frequency, of extreme climatic events like droughts and floods. In this work, an effort has been made towards identification of spatial co-occurrence of droughts across various subdivisions of India, based on the historical climatological data of the past cen...

Journal: :Science 2004
Siegfried D Schubert Max J Suarez Philip J Pegion Randal D Koster Julio T Bacmeister

During the 1930s, the United States experienced one of the most devastating droughts of the past century. The drought affected almost two-thirds of the country and parts of Mexico and Canada and was infamous for the numerous dust storms that occurred in the southern Great Plains. In this study, we present model results that indicate that the drought was caused by anomalous tropical sea surface ...

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