Extended Data Fig. 8: Correlations between surface PM2.5 and meteorological variables.
From: Recent PM2.5 air quality improvements in India benefited from meteorological variation
Correlation coefficient r between detrended daily surface PM2.5 and meteorological variables for daily, 3-day, 5-day and 7-day averages in December–February during 2017–2022. From left to right: surface temperature (T2m), precipitation (Precip), relative humidity (RH), boundary layer height (BLH), surface pressure (Pressure), surface wind speed (WS-10m), temperature inversion between 925hPa and 2m (INV925-2m), temperature inversion between 850hPa and 2m (INV850-2m), 850hPa wind speed (WS-850), 500hPa wind speed (WS-500). Dots indicate statistical significance at 95 percentile confidence intervals.
