The Influence of Atlantic Tropical Cyclones on Drought over the Eastern United States (1980–2007)

Kam, Jonghun; Sheffield, Justin; Yuan, Xing; Wood, Eric F.

doi:10.1175/jcli-d-12-00244.1

Cited by 67 publications

(64 citation statements)

References 72 publications

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“…The approach adopted in this study could be extended to groundwater level records as a further line of research. Similar variability in drought terminations was reported by Bonsal et al (2011), and was attributed by Kam et al (2013) to differences in rainfall intensity determined by the synoptic conditions (e.g. tropical cyclones).…”

Section: Drought Termination Rate For 2009-2012 In a Historical Contextsupporting

confidence: 78%

“…Mo, 2011;Kam et al, 2013;Maxwell et al, 2013;Patterson et al, 2013) have typically considered drought termination to be instantaneous. There are two notable exceptions: Bonsal et al (2011) subdivided drought into six stages, one of which is the concept of drought termination as a phase considered herein, and Nkemdirim and Weber (1999) expressed the concept of a rate of drought termination using Palmer Drought Severity Index units over time.…”

Section: Introductionmentioning

confidence: 99%

“…The approach adopted in these studies differs from others (e.g. Kam et al, 2013;Patterson et al, 2013) by considering drought termination to be a period of a drought event with its own start, end and duration between these points.…”

Section: Introductionmentioning

confidence: 99%

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A systematic assessment of drought termination in the United Kingdom

Parry

Wilby

Prudhomme

et al. 2016

Hydrol. Earth Syst. Sci.

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Abstract. Drought termination can be associated with dramatic transitions from drought to flooding. Greater attention may be given to these newsworthy and memorable events, but drought terminations that proceed gradually also pose challenges for water resource managers. This paper defines drought termination as a distinctive phase of the event. Using observed river flow records for 52 UK catchments, a more systematic and objective approach for detecting drought terminations is demonstrated. The parameters of the approach are informed by a sensitivity analysis that ensures a focus on terminations of multi-season to multi-year droughts. The resulting inventory of 467 drought terminations provides an unprecedented historical perspective on this phenomenon in the UK. Nationally and regionally coherent drought termination events are identifiable, although their characteristics vary both between and within major episodes. Contrasting drought termination events in 1995-1998 and 2009-2012 are examined in greater depth. The data are also used to assess potential linkages between metrics of drought termination and catchment properties. The duration of drought termination is moderately negatively correlated with elevation (r s = −0.47) and catchment average rainfall (r s = −0.42), suggesting that wetter catchments in upland areas of the UK tend to experience shorter drought terminations. More urbanized catchments tend to have gradual drought terminations (contrary to expectations of flashy hydrological response in such areas), although this may also reflect the type of catchments typical of lowland England. Significant correlations are found between the duration of the drought development phase and both the duration (r s = −0.29) and rate (r s = 0.28) of drought termination. This suggests that prolonged drought development phases tend to be followed by shorter and more abrupt drought terminations. The inventory helps to place individual events within a long-term context. The drought termination phase in 2009-2012 was, at the time, regarded as exceptional in terms of magnitude and spatial footprint, but the Thames river flow record identifies several comparable events before 1930. The chronology could, in due course, provide a basis for exploring the complex drivers, long-term variability, and impacts of drought termination events.

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Section: Drought Termination Rate For 2009-2012 In a Historical Contextsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A systematic assessment of drought termination in the United Kingdom

Parry

Wilby

Prudhomme

et al. 2016

Hydrol. Earth Syst. Sci.

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“…Kam et al, 2013]. Europe and Australia experience the highest proportion of cluster displacement (76% and 58%, respectively); North America and Asia the highest proportion of asymmetric growth (23% and 22%, respectively); and North America, South America, and Africa of asymmetric shrinkage (25%, 25%, and 32%, respectively).…”

Section: Spatial Patterns Of Drought Displacementmentioning

confidence: 98%

Spatiotemporal dynamics of global drought

Herrera-Estrada

Satoh

Sheffield

2017

Geophysical Research Letters

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161

112

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Understanding the evolution and physical drivers of drought is critical to informing forecasting efforts. One aspect that has seldom been explored is the joint evolution of droughts in space and time. Most studies fix the reference area and focus on their temporal variability or study their spatial heterogeneity over fixed durations. This work implements a Lagrangian approach by aggregating contiguous areas under drought into clusters. These clusters become the frame of reference and are tracked as they evolve through space and time. Clusters were identified from soil moisture data from the Climate Forecast System Reanalysis (1979–2009). Evapotranspiration, moisture fluxes, and precipitation were used to explore the relevance of possible mechanisms of drought propagation. While most droughts remain near their origin, the centroid of 10% of clusters traveled at least 1400–3100 km, depending on the continent. This approach also revealed that large‐scale droughts often lock into further growth and intensification.

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“…Kam et al 2013) or atmospheric rivers (e.g. Dettinger 2013) terminating drought in the United States (US).…”

Section: Introductionmentioning

confidence: 99%