1. Anthropogenic Perturbations to the Atmospheric Molybdenum Cycle
- Author
-
Daniela Varrica, Robert W. Howarth, Yasser Morera-Gómez, Manuel Castro Carneiro, Maria Inês Couto Monteiro, Xavier Querol, Fabrice Lambert, David D. Cohen, Rémi Losno, Maria Grazia Alaimo, Y. Xu, Patricia Smichowski, Philip K. Hopke, Jenny L. Hand, Roxanne Marino, Christoph Hueglin, Sergio Rodríguez, Longlei Li, Willy Maenhaut, Michelle Y. Wong, Chad W. Milando, Gaetano Dongarra, D. S. Connelly, Yuanwen Kuang, Francisco Barraza, Roy M. Harrison, Yi hua Xiao, Sagar D. Rathod, Darío Gómez, Shankararaman Chellam, Andrés Alastuey, James Liang, Natalie M. Mahowald, Yu Cheng Chen, Cornell University, Texas Air Research Center, Texas Commission on Environmental Quality, Agencia Nacional de Investigación y Desarrollo (Chile), National Science Foundation (US), Wong M.Y., Rathod S.D., Marino R., Li L., Howarth R.W., Alastuey A., Alaimo M.G., Barraza F., Carneiro M.C., Chellam S., Chen Y.-C., Cohen D.D., Connelly D., Dongarra G., Gomez D., Hand J., Harrison R.M., Hopke P.K., Hueglin C., Kuang Y.-W., Lambert F., Liang J., Losno R., Maenhaut W., Milando C., Monteiro M.I.C., Morera-Gomez Y., Querol X., Rodriguez S., Smichowski P., Varrica D., Xiao Y.-H., Xu Y., and Mahowald N.M.
- Subjects
Atmospheric Science ,Global and Planetary Change ,Nitrogenase ,chemistry.chemical_element ,Particulates ,Aerosol deposition ,chemistry ,Nitrogen fixation ,Molybdenum ,Environmental chemistry ,Nutrient limitation ,Environmental Chemistry ,Environmental science ,Particulate matter ,General Environmental Science - Abstract
Molybdenum (Mo) is a key cofactor in enzymes used for nitrogen (N) fixation and nitrate reduction, and the low availability of Mo can constrain N inputs, affecting ecosystem productivity. Natural atmospheric Mo aerosolization and deposition from sources such as desert dust, sea‐salt spray, and volcanoes can affect ecosystem function across long timescales, but anthropogenic activities such as combustion, motor vehicles, and agricultural dust have accelerated the natural Mo cycle. Here we combined a synthesis of global atmospheric concentration observations and modeling to identify and estimate anthropogenic sources of atmospheric Mo. To project the impact of atmospheric Mo on terrestrial ecosystems, we synthesized soil Mo data and estimated the global distribution of soil Mo using two approaches to calculate turnover times. We estimated global emissions of atmospheric Mo in aerosols (
- Published
- 2021