Recent changes in temperature extremes in subtropical climate region and the role of large-scale atmospheric oscillation patterns

Understanding the recent variations in temperature extremes is crucial to anticipate forthcoming incidences of extreme phenomena. However, knowledge extremes’ spatial and temporal patterns, as well their links atmospheric oscillation topography, scarce Bangladesh. To this end, research intends analyze trends temperatures relationships with indices topography Daily data obtained from 20 meteorological stations for 1980–2017 were employed purpose. Results revealed increasing summer days (SU25), tropical nights (TR20), warm (TX90p), warmest (TXx), (TN90p), while decline coldest (TNn), cold (TX10p), (TN10p) was observed Spatial distribution an increase SU25 TN90p by 1.9–2.38, 2.33–2.90 days/decade, a decrease TX10p TN10p 1.7–3.3 days/decade most regions. Besides, TR20 showed 3.22–4.17 all sub-regions. The Bangladesh significant connection multivariate ENSO index (MEI) Sea Surface Temperature (SST). regions country Southern Oscillation Index (SOI) Indian Ocean Dipole (IOD). influence more evident on days/nights than days/nights. also correlation elevation, which suggests night day elevation Large-scale climate mode reanalysis that strong (weak) wind speed, enhancing (decreasing) geopotential height, fast warming (cooling) over northwestern (southeast) region have attributed several extents. These findings will assist policymakers disaster mitigation change adaptation