A comparison between thermal tropopauses derived from mandatory and significant levels for the Indian subcontinent upper‐air network

Abstract

Differences between lapse rate tropopauses (LRTs) and LRT-like tropopauses retrieved from mandatory levels (LRTMs) were studied for height, pressure and temperature at 37 locations of the Indian subcontinent on a long-term annual, summer and winter basis covering the period 1973-2015. LRTM is usually found below LRT and statistical distinctions hinder the use of the former tropopause as a replacement for the latter one, yet significant positive Spearman's correlations show a relationship through a monotonic increasing function that enable the estimation of LRT variables from the corresponding LRTM ones. The slope and the intercept for a linear function relating corresponding variables were obtained at each location.

Indian summer monsoon onset signatures on the tropical tropopause layer

“…The tropopause itself varies temporally as well as spatially and its variability over Gadanki has been well reported (Mehta et al ., ; RavindraBabu et al ., ; Venkat Ratnam et al ., ). Recently, Yuchechen and Canziani () reported the differences between lapse rate tropopauses (LRTs) and LRT‐like tropopauses calculated from mandatory levels (LRTMs) by using 37 upper air stations data over India (1973–2015). Sunilkumar et al .…”