Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1906091116 |
African biomass burning is a substantial source of phosphorus deposition to the Amazon, Tropical Atlantic Ocean, and Southern Ocean | |
Barkley, Anne E.1; Prospero, Joseph M.1; Mahowald, Natalie2; Hamilton, Douglas S.2; Popendorf, Kimberly J.1; Oehlert, Amanda M.1; Pourmand, Ali1; Gatineau, Alexandre3; Panechou-Pulcherie, Kathy3; Blackwelder, Patricia1,4; Gaston, Cassandra J.1 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:33页码:16216-16221 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France |
英文摘要 | The deposition of phosphorus (P) from African dust is believed to play an important role in bolstering primary productivity in the Amazon Basin and Tropical Atlantic Ocean (TAO), leading to sequestration of carbon dioxide. However, there are few measurements of African dust in South America that can robustly test this hypothesis and even fewer measurements of soluble P, which is readily available for stimulating primary production in the ocean. To test this hypothesis, we measured total and soluble P in long-range transported aerosols collected in Cayenne, French Guiana, a TAO coastal site located at the northeastern edge of the Amazon. Our measurements confirm that in boreal spring when African dust transport is greatest, dust supplies the majority of P, of which 5% is soluble. In boreal fall, when dust transport is at an annual minimum, we measured unexpectedly high concentrations of soluble P, which we show is associated with the transport of biomass burning (BB) from southern Africa. Integrating our results into a chemical transport model, we show that African BB supplies up to half of the P deposited annually to the Amazon from transported African aerosol. This observational study links P-rich BB aerosols from Africa to enhanced P deposition in the Amazon. Contrary to current thought, we also show that African BB is a more important source of soluble P than dust to the TAO and oceans in the Southern Hemisphere and may be more important for marine productivity, particularly in boreal summer and fall. |
英文关键词 | dust biomass burning phosphorus Atlantic Ocean Amazon Basin |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481404300017 |
WOS关键词 | LONG-RANGE TRANSPORT ; BIOAVAILABLE PHOSPHORUS ; AEROSOL REANALYSIS ; MINERAL DUST ; SAHARAN DUST ; GLOBAL OCEAN ; IMPACT ; AIR ; BASIN ; IRON |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205157 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA; 2.Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY 14853 USA; 3.ATMO Guyane, F-97343 Guyane, French Guiana, France; 4.Univ Miami, Dept Chem, Ctr Adv Microscopy, Coral Gables, FL 33146 USA |
推荐引用方式 GB/T 7714 | Barkley, Anne E.,Prospero, Joseph M.,Mahowald, Natalie,et al. African biomass burning is a substantial source of phosphorus deposition to the Amazon, Tropical Atlantic Ocean, and Southern Ocean[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(33):16216-16221. |
APA | Barkley, Anne E..,Prospero, Joseph M..,Mahowald, Natalie.,Hamilton, Douglas S..,Popendorf, Kimberly J..,...&Gaston, Cassandra J..(2019).African biomass burning is a substantial source of phosphorus deposition to the Amazon, Tropical Atlantic Ocean, and Southern Ocean.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(33),16216-16221. |
MLA | Barkley, Anne E.,et al."African biomass burning is a substantial source of phosphorus deposition to the Amazon, Tropical Atlantic Ocean, and Southern Ocean".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.33(2019):16216-16221. |
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