Leveraging a spatio-temporal drought severity and coverage index with crop yield modelled as a stochastic process
by Navaratnam Leelaruban; Peter G. Oduor; Adnan Akyuz; Saleem Shaik; G. Padmanabhan
International Journal of Hydrology Science and Technology (IJHST), Vol. 2, No. 3, 2012

Abstract: An analysis of spatial and temporal variation of drought impact may offer an unbiased glimpse into factors that may dictate drought severity at an apt local scale. In this study drought indices, for example, drought severity and coverage index, ISC, and, a derived crop-based drought severity and coverage index, ISC,AG, were scaled down to county levels. Drought frequency analyses showed clear demarcation of counties in an observable dichotomy. This demarcation has significant implications on crop yield. This impact was analysed using USDA National Agricultural Statistics Service (NASS): a) county level yield; b) developed ISC values; c) Markovian process on transition of crop yield categories. From this study the immediate observation was: a) southwest counties, for example, are also susceptible to secondary effects due to drought; b) crops like corn are more susceptible to periodic wetness disturbance.

Online publication date: Sat, 16-Aug-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Hydrology Science and Technology (IJHST):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?


Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com