Pallav Ray results 13
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The simultaneous occurrence of heatwaves and droughts is becoming more frequent and intense under climate change, particularly affecting vulnerable regions like Northeast Brazil (NEB). This study presents a comprehensive assessment of these compound extremes using long‐term in situ observations and ERA5 reanalysis. Heatwaves were defined by daily temperatures exceeding the 90th percentile, and droughts by the standardised prec...
Improvements in the Seasonal Prediction of the Mid‐Summer Drought Based on the North American Multimodel EnsembleNARA Subscribed
Skillful prediction of the Mid‐Summer Drought (MSD) is important for various socioeconomic sectors in southern Mexico, Central America and the Caribbean. However, operational forecasting errors of the MSD have rarely been evaluated systematically. In this study, we address this research gap by examining operational forecasts of the MSD derived from the North American Multimodel Ensemble (NMME; 1991–2020). We assess these forec...
Analysis of localized features during wet and dry rainfall episodes over southern tip of IndiaNARA Subscribed
The large spatial and temporal variability of wet and dry spells of the Indian Summer Monsoon (ISM) poses the great challenge in understanding and predicting monsoonal rainfall. This challenge is further exacerbated over smaller regions, such as the southern tip of India, which receives the first spell of ISM rainfall. In this study, the characteristic features and possible precursors for wet and dry spells of rainfall over th...
Estimates of the sensible heat of rainfall in the tropics from reanalysis and observationsNARA Subscribed
Precipitation cools the surface because the temperature of raindrops is typically lower than the temperature of the surface. This precipitation‐induced sensible heat flux ( Q P ) due to the temperature difference between the surface and raindrops is thought to be small and is typically ignored in weather and climate models. However, there are many instances in which instantaneous values in Q P can be large, especially in extre...
Active and weakening MJO events in the Maritime ContinentNARA Subscribed
To better understand the Madden–Julian Oscillation (MJO) in the Maritime Continent (MC), events from 1980 to 2019 were classified as active or weakening according to propagation characteristics and amplitude changes in two leading indices, the Real-time Multivariate MJO (RMM) index and Outgoing Longwave Radiation (OLR) MJO Index (OMI). Active MJO events had larger index amplitudes than weakening events, and those amplitude dif...
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