Weather Elements and Frost Occurrence in Arid Zone of Haryana

Satyawan Satyawan; Ram Niwas; M L Khichar

doi:10.56093/aaz.v47i2.64849

Authors

Satyawan Satyawan Department of Agricultural Meteorology, CCS Haryana Agricultural University, Hisar 125 004, India
Ram Niwas Department of Agricultural Meteorology, CCS Haryana Agricultural University, Hisar 125 004, India
M L Khichar Department of Agricultural Meteorology, CCS Haryana Agricultural University, Hisar 125 004, India

https://doi.org/10.56093/aaz.v47i2.64849

Abstract

The study was conducted at CCS Haryana Agricultural University Hisar.
The daily meteorological data of winter seasons (December to February) of past
20 years from 1982 to 2002 were used. Mean frosty days were maximum in January
(12.7) followed by December (8.5) and February (5.7). The CV was less in January
as compared to December and February. Maximum probability of frost occurrence
was 0.70 on 24th January. Grass minimum temperature was correlated with weather
parameters of two preceding days. Grass minimum temperature was significantly
correlated with minimum temperature; morning and. evening actual vapor pressure
and morning and evening relative humidity. Minimum temperature and morning
actual vapor pressure of previous day (logarithmic relationship) individually explained
the variability in grass minimum temperature of next day up to 76%.
Key words: Frost, grass minimum temperature.