Abstract This study investigates the complex interactions between aerosol absorption properties and maximum temperature during pre‐monsoon seasons (2005–2023) across Indo‐Gangetic Plains and Central India (21.5°–28.5° N, 69.5°–88.5° E). Utilising satellite‐derived aerosol measurements from the Ozone Monitoring Instrument ( OMI ) and maximum surface temperature data from the India Meteorological Department ( IMD ), both spatial patterns and temporal evolution of aerosol‐temperature coupling were analysed through correlation studies and vector autoregression ( VAR ) modelling. Our findings reveal distinct spatial gradients in aerosol distribution, with Aerosol Optical Depth (AOD) increasing west‐to‐east (0.35–0.93) and stronger absorption patterns in the eastern sector (Aerosol Absorption Optical Depth (AAOD): 0.037–0.092). Post‐2018, the region experienced intensified Ultraviolet Aerosol Index (UVAI) and increased frequency of temperature extremes exceeding 40°C, with 2021 marking a peak of 162 high UVAI (>2) events. To investigate UVAI‐temperature interactions, relative humidity and wind components were included in the VAR model with a consistent 2‐day lag relationship. Our analysis revealed regionally distinct response patterns: the Primary Region (eastern Chhattisgarh‐western Odisha) exhibits oscillatory temperature responses to UVAI shocks with multiple fluctuations persisting through day 10, with relative humidity functioning as a critical mediating factor and wind patterns establishing feedback mechanisms with aerosols. In contrast, the Secondary Region (eastern Uttar Pradesh) shows a smoother, monotonic temperature response with a more straightforward pathway from aerosol forcing to temperature response. Fire events are associated with only 6.1% of UVAI events (1.0–5.0), with declining fire association as UVAI intensity increases indicating substantial contributions from other sources, including industrial emissions and desert dust. These findings highlight the region‐specific nature of aerosol‐temperature coupling and its recent intensification, with important implications for understanding regional climate dynamics and air quality management strategies in South Asia.
Janmaijaya et al. (Wed,) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: