The role of atmospheric instability, expressed by Convective Available Potential Energy (CAPE), in determining raindrop size distribution (DSD) parameters have been investigated over an urban tropical location, Kolkata (22.57°N and 88.37°E), India, near the land‐sea boundary. DSD measurements obtained from a ground‐based disdrometer during both pre‐monsoon (March‐May) and monsoon periods (June‐September) have been used in conjunction with CAPE from ERA‐5 data from 2014 to 2018. Based on collocated observations from a K‐band Doppler micro rain radar, rain events are classified as convective or stratiform. The study has shown that enhanced CAPE values significantly influence DSD parameters by increasing mass‐weighted mean diameter (Dm) during convective rain, but it does not impact directly during stratiform rain. For stratiform rain events, the melting layer becomes a significant factor in determining Dm, which decreases with increasing melting layer height. Convective rain exhibits a bimodal DSD pattern for higher CAPE values, while stratiform rain shows a unimodal DSD feature. The present study location provides a unique opportunity to study the combined influences of air mass flows from the hot land region in Chotanagpur plateau and from the sea region of the Bay of Bengal on precipitation features. The investigation reveals the dominance of continental activities during convective precipitation and of maritime airflows on stratiform rain events, which is more visible during the pre‐monsoon season compared to the monsoon period. For the first time, the dual control of CAPE and melting layer on drop size distributions has been demonstrated for convective and stratiform rain events.

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The present study assesses the association of different socio-economic variables with children’s BMI-for-age z-scores (BAZ) and influence of children’s height on BAZ, a proxy index of nutritional status. The study was undertaken among 322 girls belonging to the Bengali Hindu Caste Population (BHCP) aged 5–13 years. These girls were the students of two schools located in Siliguri town of West Bengal, India. The prevalence of short stature, underweight and overweight was assessed using the World Health Organization’s ( WHO, 2007 , Growth Reference Data for 5–19 years) references. The statistical analyses used were St. Nicolas House Analysis (SNHA), analysis of variance (ANOVA), linear and logistic regression. The prevalence of underweight, overweight and obesity was 19.3%, 17.8% and 5.9%, respectively. The prevalence of short stature (−2.0 HAZ) was 8.7%. The range of BAZ was from −5.69 to 4.15. The variation of BAZ explained by height-for-age z-scores (HAZ) was 11.4%. The BAZ was observed to be associated with mothers’ occupation as revealed by 2% variation through SNHA analysis. The present study observed the usefulness of SNHA for non-parametric data with unequal sub-sample or categories. However, SNHA was not devised to assess the direction and magnitude of variables of interest. The finding of the present study supports the use of BAZ as a proxy adiposity measure among the overweight/obese populations and populations with normal growth in height. The study further supports the recommendations that mother empowerment can help improve nutritional status of a girl child.

Measurements of the production of electrons from heavy-flavour hadron decays in pp collisions at $$ \sqrt{s} $$ s = 13 TeV at midrapidity with the ALICE detector are presented down to a transverse momentum (pT) of 0.2 GeV/c and up to pT = 35 GeV/c, which is the largest momentum range probed for inclusive electron measurements in ALICE. In p-Pb collisions, the production cross section and the nuclear modification factor of electrons from heavy-flavour hadron decays are measured in the pT range 0.5 < pT< 26 GeV/c at $$ \sqrt{s_{\textrm{NN}}} $$ s NN = 8.16 TeV. The nuclear modification factor is found to be consistent with unity within the statistical and systematic uncertainties. In both collision systems, first measurements of the yields of electrons from heavy-flavour hadron decays in different multiplicity intervals normalised to the multiplicity-integrated yield (self-normalised yield) at midrapidity are reported as a function of the self-normalised charged-particle multiplicity estimated at midrapidity. The self-normalised yields in pp and p-Pb collisions grow faster than linear with the self-normalised multiplicity. A strong pT dependence is observed in pp collisions, where the yield of high-pT electrons increases faster as a function of multiplicity than the one of low-pT electrons. The measurement in p-Pb collisions shows no pT dependence within uncertainties. The self-normalised yields in pp and p-Pb collisions are compared with measurements of other heavy-flavour, light-flavour, and strange particles, and with Monte Carlo simulations.