scholarly journals Identification of Hydrological Drought in Eastern China Using a Time-Dependent Drought Index

Water ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 315 ◽  
Author(s):  
Lei Zou ◽  
Jun Xia ◽  
Like Ning ◽  
Dunxian She ◽  
Chesheng Zhan
Keyword(s):  
Drought Index ◽  
Eastern China ◽  
Hydrological Drought ◽  
Time Dependent

scholarly journals Drought assessment using a multivariate drought index in the Huaihe River basin of Eastern China

2015 ◽  
Vol 369 ◽  
pp. 61-67
Author(s):  
Q. Li ◽  
M. Zeng ◽  
H. Wang ◽  
P. Li ◽  
K. Wang ◽  
...  
Keyword(s):  
River Basin ◽  
Drought Index ◽  
Eastern China ◽  
Standardized Precipitation Index ◽  
Cumulative Distribution ◽  
Huaihe River Basin ◽  
Huaihe River ◽  
Drought Assessment ◽  
The Huaihe River ◽  
Multivariate Drought Index

Abstract. The Huaihe River Basin having China's highest population density (662 persons per km2) lies in a transition zone between the climates of North and South China, and is thus prone to drought. Therefore, the paper aims to develop an appropriate drought assessment approach for drought assessment in the Huaihe River basin, China. Based on the Principal Component Analysis of precipitation, evapotranspiration, soil moisture and runoff, the three latter variables of which were obtained by use of the Xin'anjiang model, a new multivariate drought index (MDI) was formulated, and its thresholds were determined by use of cumulative distribution function. The MDI, the Standardized Precipitation Index (SPI) and the self-calibrating Palmer Drought Severity Index (sc-PDSI) time series on a monthly scale were computed and compared during 1988, 1999/2000 and 2001 drought events. The results show that the MDI exhibited certain advantages over the sc-PDSI and the SPI in monitoring drought evolution. The MDI formulated by this paper could provide a scientific basis for drought mitigation and management, and references for drought assessment elsewhere in China.

A copula-based joint meteorological–hydrological drought index in a humid region (Kasilian basin, North Iran)

2018 ◽  
Vol 11 (12) ◽  
Author(s):  
Majid Cheraghalizadeh ◽  
Arezoo N. Ghameshlou ◽  
Javad Bazrafshan ◽  
Ommolbanin Bazrafshan
Keyword(s):  
Drought Index ◽  
Hydrological Drought ◽  
Humid Region ◽  
Hydrological Drought Index

scholarly journals Hydrological drought index insurance for irrigation districts in Spain

2016 ◽  
Vol 14 (3) ◽  
pp. e0105 ◽  
Author(s):  
Teresa Maestro ◽  
Maria Bielza ◽  
Alberto Garrido
Keyword(s):  
Drought Index ◽  
Expert Panel ◽  
Crop Insurance ◽  
Hydrological Drought ◽  
Irrigated Agriculture ◽  
Index Insurance ◽  
Insurance Scheme ◽  
Insurance System ◽  
Irrigation Districts ◽  
Hydrological Drought Index

Hydrological droughts are a major risk for irrigated agriculture in many regions of the world. The aim of this article is to propose an insurance tool to help irrigators manage the risk of water scarcity in the framework of the Spanish Crop Insurance System (SCIS). Only the United States Insurance System provides this type of coverage, but has very restrictive conditions. To determine the type of insurance scheme that better fits with the SCIS and to the Spanish irrigated agriculture, an expert panel was held with the participation of all stakeholders involved in crop insurance. Following the expert panel conclusions, an hydrological drought index insurance (HDII) addressed to irrigation districts (ID) is proposed. It would compensate water deficits suffered in the whole ID. We detail the conditions that the ID should fulfill to be eligible for HDII. HDII is applied to the Bardenas Irrigation District V (ID-V) in Spain, and the hedging effectiveness of the instrument is analyzed comparing ID-V’s gross margins with and without the insurance contract. Results suggest that the proposed insurance scheme could provide an effective means of reducing farmers’ vulnerability to water shortages and there is no major impediment for it to be included as a new line in the SCIS. This type of insurance can be generalized to any ID fulfilling the conditions mentioned in this paper.

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