Table of Contents
International Journal of Atmospheric Sciences
Volume 2014 (2014), Article ID 512925, 8 pages
http://dx.doi.org/10.1155/2014/512925
Research Article

Modelling Agro-Met Station Observations Using Genetic Algorithm

1Atmospheric and Oceanic Sciences Group, Space Applications Centre (ISRO), Ahmedabad 380015, India
2Crop Inventory and Agro-Ecosystems Division (CAD), ABHG, Space Applications Centre (ISRO), Ahmedabad 380015, India

Received 5 June 2014; Revised 25 August 2014; Accepted 10 September 2014; Published 23 September 2014

Academic Editor: Hui Wang

Copyright © 2014 Prashant Kumar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present work discusses the development of a nonlinear data-fitting technique based on genetic algorithm (GA) for the prediction of routine weather parameters using observations from Agro-Met Stations (AMS). The algorithm produces the equations that best describe the temporal evolutions of daily minimum and maximum near-surface (at 2.5-meter height) air temperature and relative humidity and daily averaged wind speed (at 10-meter height) at selected AMS locations. These enable the forecasts of these weather parameters, which could have possible use in crop forecast models. The forecast equations developed in the present study use only the past observations of the above-mentioned parameters. This approach, unlike other prediction methods, provides explicit analytical forecast equation for each parameter. The predictions up to 3 days in advance have been validated using independent datasets, unknown to the training algorithm, with impressive results. The power of the algorithm has also been demonstrated by its superiority over persistence forecast used as a benchmark.