文献类型：期刊文献

英文题名：Anthropogenic Perturbations to the Atmospheric Molybdenum Cycle

作者：Wong, Michelle Y.[1,2] Rathod, Sagar D.[3] Marino, Roxanne[2] Li, Longlei[4] Howarth, Robert W.[2] Alastuey, Andres[5] Alaimo, Maria Grazia[6] Barraza, Francisco[7] Carneiro, Manuel Castro[8] Chellam, Shankararaman[9] Chen, Yu-Cheng[10] Cohen, David D.[11] Connelly, David[12] Dongarra, Gaetano[6] Gomez, Dario[13] Hand, Jenny[14] Harrison, R. M.[15,16] Hopke, Philip K.[17,18] Hueglin, Christoph[19] Kuang, Yuan-wen[20] Lambert, Fabrice[21,22] Liang, James[17] Losno, Remi[23] Maenhaut, Willy[24] Milando, Chad[25] Monteiro, Maria Ines Couto[8] Morera-Gomez, Yasser[26] Querol, Xavier[5] Rodriguez, Sergio[27,28,29] Smichowski, Patricia[13,30] Varrica, Daniela[6] Xiao, Yi-hua[31] Xu, Yangjunjie[23] Mahowald, Natalie M.[4,32]

第一作者：Wong, Michelle Y.

通信作者：Wong, MY[1];Wong, MY[2]

机构：[1]Cary Inst Ecosyst Studies, Millbrook, NY 12545 USA;[2]Cornell Univ, Dept Ecol & Evolutionary Biol, Ithaca, NY 14850 USA;[3]Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA;[4]Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY USA;[5]CSIC, Inst Environm Assessment & Water Res, IDEA, Barcelona, Spain;[6]Univ Palermo, Dipartimento Sci Terra & Mare, Sicily, Italy;[7]Univ Otago, Sch Geog, Dunedin, New Zealand;[8]Ctr Tecnol Mineral CETEM, Coordenacao Anal Minerais, Rio De Janeiro, RJ, Brazil;[9]Texas A&M Univ, Dept Civil & Environm Engn, College Stn, TX USA;[10]Natl Inst Environm Hlth Sci, Natl Hlth Res Inst, Miaoli, Taiwan;[11]Australian Nucl Sci & Technol Org, Lucas Heights, NSW, Australia;[12]Cornell Univ, Dept Math, Ithaca, NY USA;[13]Gerencia Quim, Comis Nacl Energia Atom, Buenos Aires, Argentina;[14]Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA;[15]Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, W Midlands, England;[16]King Abdulaziz Univ, Ctr Excellence Environm Studies, Dept Environm Sci, Jeddah, Saudi Arabia;[17]Clarkson Univ, Potsdam, NY USA;[18]Univ Rochester, Dept Publ Hlth Sci, Sch Med & Dent, Rochester, NY USA;[19]Swiss Fed Labs Mat Sci & Technol EMPA, Dubendorf, Switzerland;[20]Chinese Acad Sci, South China Bot Garden, 0Key Lab Vegetat Restorat & Management Degraded E, Guangzhou, Peoples R China;[21]Pontificia Univ Catolica Chile, Dept Phys Geog, Santiago, Chile;[22]Univ Chile, Ctr Climate & Resilience Res, Santiago, Chile;[23]Univ Paris, Institut Phys Globe Paris, Paris, France;[24]Univ Ghent, Dept Chem, Ghent, Belgium;[25]Boston Univ, Sch Publ Hlth, Boston, MA 02215 USA;[26]Ctr Estudios Ambientales Cienfuegos, Cienfuegos, Cuba;[27]AEMET, Izana Atmospher Res Ctr, Santa Cruz De Tenerife, Spain;[28]CSIC, Estn Expt Zonas Aridas, Almeria, Spain;[29]IPNA, CS, Tenerife, Spain;[30]Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina;[31]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou, Peoples R China;[32]Cornell Univ, Cornell Atkinson Ctr Sustainabil, Ithaca, NY USA

年份：2021

卷号：35

期号：2

外文期刊名：GLOBAL BIOGEOCHEMICAL CYCLES

收录：;Scopus(收录号：2-s2.0-85101506426);WOS:【SCI-EXPANDED(收录号:WOS:000623814300005)】；

基金：We acknowledge the Atkinson Center for a Sustainable Future at Cornell University for funding for this project, and thank Adina Paytan for comments on an earlier version of this manuscript. Simulations were undertaken at the NCAR facility (National Center for Atmospheric Research, 2019). We acknowledge many observational networks and sites that were used in this study, including, but not limited to APAD and ASFID: Airborne Particulate Matter Databases Related to the Asia-Pacific Region (http://www.ansto.gov.au/aspdatabases), DEFRA (https://uk-air.defra.gov.uk), the European Monitoring and Evaluation Programme (https://www.emep.int/), the Ministerio del Medio Ambiente de Chile (https://mma.gob.cl), and the Research State Agency of Spain. Houston area measurements were made possible by funding from the Texas Air Research Center and the Texas Commission on Environmental Quality to S. Chellam. F. Lambert acknowledges support from projects ANID/Fondecyt 1191223, ANID/Fondap 15110009, and ANID/Millennium Science Initiative/Millennium Nucleus Paleoclimate NCN17_079. N. M. Mahowald acknowledges support from NSF CCF-1522054 and DESC0006791, and S. D. Rathod acknowledges support from DE-SS0016362.

语种：英文

外文关键词：aerosol deposition; nitrogenase; nitrogen fixation; nutrient limitation; particulate matter

摘要：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 (<10 mu m in diameter) to be 23 Gg Mo yr(-1), with 40%-75% from anthropogenic sources. We approximated that for the top meter of soil, Mo turnover times range between 1,000 and 1,000,000 years. In some industrialized regions, anthropogenic inputs have enhanced Mo deposition 100-fold, lowering the soil Mo turnover time considerably. Our synthesis of global observational data, modeling, and a mass balance comparison with riverine Mo exports suggest that anthropogenic activity has greatly accelerated the Mo cycle, with potential to influence N-limited ecosystems.