Trends in precipitation and streamflow in the eastern U.S.: Paradox or perception?

Small, David; Islam, Shafiqul; Vogel, Richard M.

doi:10.1029/2005gl024995

Cited by 146 publications

(146 citation statements)

References 9 publications

(20 reference statements)

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“…In addition to binomial test, the quantile-quantile plot (qq plot) of the uniform distribution of signs is also presented in Figure 8. Departures from the uniform distribution indicate that the null hypothesis of no trend must be rejected (Small et al, 2006). It is clear that the AMDSL and ANDSP do not deviate from linearity, but the departure is clearly larger for ANDSP.…”

Section: Test For Regional Trendmentioning

confidence: 99%

Dry spell trend analysis of Isfahan Province, Iran

Nasri

Modarres

2008

Intl Journal of Climatology

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ABSTRACT:In the present study the spatiotemporal trend analysis of the annual maximum dry spell length (AMDSL) and the annual number of dry spell periods (ANDSPs) of Isfahan Province in the center of Iran has been conducted based on daily rainfall records taken from 17 rain gauge stations. The autocorrelation functions (ACFs) of dry spell time series showed the randomness of dry spells. The use of Mann-Kendall test for trend revealed two stations with significant negative trend of the AMDSL located in east and west of the province. The trend analysis of the ANDSP showed three stations with significant upward trend in east and one station with significant negative trend in the west of the province. The sequential Mann-Kendall test showed an evidence of an individual abrupt change in the magnitudes of dry spells from 1980s, especially in eastern arid and semi-arid regions of the province. However, the binomial and uniform distribution of Mann-Kendall statistics reveals that individual trend in a region is not strong enough to conclude the large-scale regional climatic effects on dry spell characteristics in the entire Isfahan Province.

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Section: Test For Regional Trendmentioning

confidence: 99%

Dry spell trend analysis of Isfahan Province, Iran

Nasri

Modarres

2008

Intl Journal of Climatology

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“…Lins and Slack 1999, McCabe and Wolock 2002, Krakauer and Fung 2008 and regional (e.g. Regonda et al 2004, Small et al 2006, Brutsaert 2010) scales, as well as international ones (e.g. Stewart et al 2005, Hodgkins andDudley 2006).…”

Section: United States Reference Networkmentioning

confidence: 99%

Reference hydrologic networks I. The status and potential future directions of national reference hydrologic networks for detecting trends

Whitfield

Burn

Hannaford

et al. 2012

Hydrological Sciences Journal

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Identifying climate-driven trends in river flows on a global basis is hampered by a lack of long, quality time series data for rivers with relatively undisturbed regimes. This is a global problem compounded by the lack of support for essential long-term monitoring. Experience demonstrates that, with clear strategic objectives, and the support of sponsoring organizations, reference hydrologic networks can constitute an exceptionally valuable data source to effectively identify, quantify and interpret hydrological change-the speed and magnitude of which is expected to a be a primary driver of water management and flood alleviation strategies through the future-and for additional applications. Reference hydrologic networks have been developed in many countries in the past few decades. These collections of streamflow gauging stations, that are maintained and operated with the intention of observing how the hydrology of watersheds responds to variations in climate, are described. The status of networks under development is summarized. We suggest a plan of actions to make more effective use of this collection of networks.Key words reference networks; hydrometric data; hydrological change Les réseaux hydrologiques de référence I. Le statut et les orientations futures possibles des réseaux hydrologiques nationaux de référence pour détecter les tendancesRésumé L'identification de tendances induites par le climat dans le débit des rivières est entravée par le manque de longues séries chronologiques de qualité provenant de rivières dont le régime est peu altéré. Ce problème global est aggravé par le manque de soutien aux initiatives de suivi à long terme. L'expérience démontre qu'avec des objectifs stratégiques clairs ainsi qu'avec le soutien d'organismes de parrainage, les réseaux de référence hydrologiques peuvent s'avérer une précieuse source de données pour l'identification, la quantification et l'interprétation des changements hydrologiques. La vitesse et l'ampleur de ces derniers seront probablement à l'avenir des éléments importants pour la gestion de l'eau et la lutte contre les inondations. C'est pourquoi, d'autres applications étant sans doute à prévoir, des réseaux hydrologiques de référence ont été établis dans plusieurs pays au cours des dernières décennies. On décrit ces ensembles de stations de suivi hydrométrique, maintenues et exploitées dans l'intention d'observer comment l'hydrologie des bassins versants répond aux variations climatiques, ainsi que l'état actuel de développement de ces réseaux. Nous suggérons un plan d'action visant une utilisation plus efficace de ces réseaux.Mots clefs réseaux de référence; données hydrométriques; changement hydrologique

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“…Lettenmaier et al, 1994;Rose, 1. Introduction 2009;Lins and Slack , 1999;Small et al, 2006;Regonda et al, 2005;Khaliq et al, 2008].…”

Section: Trendsmentioning

confidence: 99%

“…Krakauer and Fung, 2008;Small et al, 2006;Tootle and Piechota, 2006] and large scale atmospheric circulation patterns [e.g. Barlow et al, 2001;Rajagopalan et al, 2000;Tootle and Piechota, 2006;Tootle et al, 2005].…”

Section: Principles Of Large-scale Hydrological Modellingmentioning

confidence: 99%

Spatial cross‐correlation patterns of European low, mean and high flows

Gudmundsson¹,

Tallaksen²,

Stahl³

2011

Hydrological Processes

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Low and high flows are associated with different hydrological processes. High flows correspond to the direct response of catchments to water input, whereas low flows occur in pronged dry periods and are governed by depleting storages. Therefore, the inter‐annual dynamics of high and low flows are often considered to be independent. To shed light on this assumption, we analysed a pan‐European dataset of 615 streamflow records, summarized as time series of annual streamflow percentiles (5th, 10th, …, 95th). The analysis was based on comparing the spatial cross‐correlation patterns derived from the different percentile series. Their interrelation was visualized by projecting them into a low‐dimensional space. We found that large parts of the cross‐correlations of the percentile series can be summarized by one dominating component. This component represents geographical continuous regions in Europe of correlated streamflow. Departures from this mean pattern occurred for low and high flows and were characterized by the corresponding spatial correlation functions. Generally, spatial correlations appear to be stronger for high flows than for mean flows, particularly for short distances (<400 km). Low flows, on the other hand, have the lowest spatial correlations for short distances. For longer distances (>800 km), this pattern reverses and the spatial correlation of low flows become largest. This discrepancy between low and high flows suggests that hydrological systems are more homogeneously linked to climatic fluctuations under wet conditions. Under dry conditions, local catchment properties appear to play a larger role in translating climatic fluctuations into hydrological response. Copyright © 2010 John Wiley & Sons, Ltd.

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Trends in precipitation and streamflow in the eastern U.S.: Paradox or perception?

Cited by 146 publications

References 9 publications

Dry spell trend analysis of Isfahan Province, Iran

Dry spell trend analysis of Isfahan Province, Iran

Reference hydrologic networks I. The status and potential future directions of national reference hydrologic networks for detecting trends

Spatial cross‐correlation patterns of European low, mean and high flows

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