Estimation of Reconnaissance Drought Index (RDI) for Bhavnagar District, Gujarat, India

Authors: Ravi Shah, V. L. Manekar, R. A. Christian, N. J. Mistry

Abstract:

There are two types of drought as conceptual drought and operational drought. The three parameters as the beginning, the end and the degree of severity of the drought can be identifying in operational drought by average precipitation in the whole region. One of the methods classified to measure drought is Reconnaissance Drought Index (RDI). Evapotranspiration is calculated using Penman-Monteith method by analyzing thirty nine years prolong climatic data. The evapotranspiration is then utilized in RDI to classify normalized and standardized RDI. These RDI classifications led to what kind of drought faced in Bhavnagar region on 12 month time scale basis. The comparison between actual drought conditions and RDI method used to find out drought are also illustrated. It can be concluded that the index results of drought in a particular year are same in both methods but having different index values where as severity remain same.

Keywords: Drought, Drought index, Reconnaissance Drought Index (RDI), Precipitation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1087518

References:

[1] Tsakiris and H.Vangelis, “Establishing a Drought Index incorporating evatranspiration,” in vol. 9, E.W.Publication, pp. 3–11.
[2] Khilili et al., “Comparability Analyses of the SPI and RDI Meteorological Drought Indices in different climatic zones,” in Water Resour Manage. Vol.-25. P: 1737-1757.
[3] Britannica book of the year (University of Chicago, 1975). P: 381.
[4] Loukas et.al., “Drought characterization” in Option mediterraneennes, seriesB. Vol. - 58. P: 85-102.
[5] S.pashiardis and S.Michaelides, “Implementation of the standardized precipitation index and the reconnaissance drought index for regional drought assessment: A case study for Cyprus,” in European water, E.W.Publication. Vol. - 23/24. P: 57-65.
[6] Dastorani et. al., “Assessment of potential climate change impacts on drought indicators (case study: Yazd station, Central Iran),” in Desert. Vol.- 16 (2011). P: 159-167.
[7] S.D.Attri and Ajit Tyagi, “Climate profile of India,” in Government of India, Ministry of Earth Sciences, Indian Meteorological Department (IMD). Vol.-1. P: 10.
[8] Abdulla et. al., “Estimating Reference Evapotranspiration Using CROPWAT model at Guixi Jiangxi Province”. (http://www.paper.edu.cn).
[9] The manual for drought management (2009), Department of Agriculture and co-operation, Ministry of agriculture, Govt. Of India, New Delhi.
[10] Bonsal et. al., “Drought research in Canada: A review.” Canadian Meteorological and Oceanographic Society. Vol. - 49 (4). P: 303-319.