Temporal Relationships Between African Dust and Chlorophyll-α in the Eastern Caribbean Basin

Gomez-Andujar, N. X.; Mayol-Bracero, O. L.; Torres-Delgado, E.

doi:10.1002/essoar.a3f464f8e944e8b9.e8a16f871a074053.1

Cited by 2 publications

(1 citation statement)

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“…For this, a severe dust storm event that occurred over Northern India in the year 2018, during the pre-monsoon season is selected, and comprehensively analyzed against the non-dust storm period i.e., considered as a reference background. Aside from particulate matter (PM) data, we incorporate dust column mass density (DCMD) in our study, a parameter that has not yet been used in any dust storm study over the IGP or over northern India, and is found only in a handful of recent studies in the world Gómez-Andújar et al, 2018;Sabetghadam et al, 2018;Hamidi, 2020;Yao et al, 2021).Due to many of the physical processes, atmospheric dynamics, and land-air interactions play an important role at local and regional scales. Thus, it is di cult to nd signi cant linear statistical correlations, at each point, in the meteorological parameters associated with the dust storm event.…”

Section: Introductionmentioning

confidence: 99%

Characteristics, Dynamics, and Impact of the Thar Desert Dust Storms on Air Quality over Northern India

Jain,

Saxena,

Sonwani

2024

Preprint

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In the present study, a pre-monsoon dust storm event (14 May 2018 ± 2 days), originating from Thar Desert (Rajasthan state), spread to north Indian states- Haryana, Delhi, and Uttar Pradesh is selected. Satellite observations, climate model reanalysis datasets, and ground monitoring station and meteorological parameters were used to study the dust storm event and its impact on air quality of the northern region of India against a non-dust storm background reference (viz., 25 May 2018 ± 1 day). We include dust column mass density (DCMD total and DCMD PM2.5), and find 3-5 times higher air column dust loading (maximum 3.9 g/m2) during the event, against dust levels (~0.2-0.6 g/m2) during the background non-dust storm period. NOAA HYSPLIT 72-hour forward trajectories show air-mass transport from the Thar Desert towards IGP. Aerosol Optical Depth (AOD)> 2 in the affected region indicates a high residence time of dust aerosols. DCMD is used to show the 3-hourly progression of the dust storm (initiation, spread, and gradual dissipation). Moreover, hourly dust loading in the air (DCMD) and particulate matter (PM10 and PM2.5) ground-based observations over Jodhpur (Rajasthan), Rohtak (Haryana), Delhi (NCT of Delhi), and Lucknow (Uttar Pradesh) cities, show severe worsening of the already poor air quality of the region. Lastly, local spatial correlations are plotted to understand the spatial associations, variabilities, and local feedback between the variables- DCMD, AOD, 2m air temperature, precipitation, and wind speed.

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Section: Introductionmentioning

confidence: 99%