Water Adroit Forum

Publications => Publications from the member of forum => Topic started by: Sonali on March 20, 2019, 12:56:21 PM

Title: Quantifying the shifts and intensification in the annual cycles of diurnal temperature extremes for
Post by: Sonali on March 20, 2019, 12:56:21 PM
Quantifying the shifts and intensification in the annual cycles of diurnal temperature extremes for human comfort and crop production

Work is carried out by
Vinnarasi Rajendran and Prof. Dhanya C T  from IIT Delhi

https://iopscience.iop.org/article/10.1088/1748-9326/ab0fe5


Abstract

Any significant change in climate is known to have a significant impact on crop production and human resources, which are generally difficult to quantify. In the present study, two indices are defined: (i) refined growing season (GS) characteristics and (ii) transition period, based on the annual cycles of diurnal temperature extremes, to unravel any possible impact on these productive elements. Multi-dimensional Ensemble Empirical Mode Decomposition, a non-linear, non-stationary approach is used to extract the annual cycles of diurnal temperature extremes. Since the adverse impact is reportedly more critical over tropical regions, the Indian region is chosen as the study area, and 11 gridded daily minimum and daily maximum temperature data are used. Results reveal earlier onset and lengthening of GS, with notable spatial variations. Further, a drastic reduction in the transition (i.e., comfortable) period is observed over the warm humid regions, majorly due to the encroachment by summer days. On the contrary, over semi-arid regions, the transition period is found to be increasing, majorly due to the shortening of winter. The quantification of these changes may aid in implementing regional adaptation strategies related to the two productive elements.