Publications by authors named "Manmohan M Sarin"
Anthropogenic emissions to the atmosphere have increased the flux of nutrients, especially nitrogen, to the ocean, but they have also altered the acidity of aerosol, cloud water, and precipitation over much of the marine atmosphere. For nitrogen, acidity-driven changes in chemical speciation result in altered partitioning between the gas and particulate phases that subsequently affect long-range transport. Other important nutrients, notably iron and phosphorus, are affected, because their soluble fractions increase upon exposure to acidic environments during atmospheric transport.
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- Anthropogenic nitrogen emissions have significantly increased nitrate and ammonium deposition in ocean waters, impacting marine productivity and global carbon cycles.
- Over 2900 aerosol concentration observations collected between 1995 and 2012 were analyzed to evaluate nitrogen concentration and deposition models in three ocean regions with sufficient data.
- The research highlights the challenge of validating atmospheric nitrogen deposition models due to the inability to measure deposition fluxes directly over the ocean, underscoring the importance of using observational data to improve these models.