A novel hybrid approach for estimating total deposition in the United States
A novel hybrid approach for estimating total deposition in the United States
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一种估算美国总沉积量的新型混合方法
DOI：
10.1016/j.atmosenv.2014.04.008
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发表时间：
2014
影响因子：
5
通讯作者：
G. Lear
中科院分区：
文献类型：
--
作者：
D. Schwede;G. Lear
大气中氮和硫的沉积对生态系统造成了许多有害影响，包括酸化和过度富营养化。为支持制定减轻这些影响的战略而进行的评估需要在空间和时间上连续的氮和硫沉降值。在美国，国家监测网络可以提供不同地点的干湿沉降值。虽然湿沉降可以在监测地点之间进行内插，但干沉降不能。此外，监测网络并不测量导致总硫和氮沉积的整套化学物质。区域空气质量模式提供了监测物种和重要的未测量物种在空间上连续的沉积值。然而，空气质量模型值通常不适用于较长的连续时间段。对于某些化学物质，空气质量模拟结果也可能存在偏差。我们开发了一种新的方法，利用来自清洁空气状况和趋势网络(CASTNET)、国家大气沉积计划(NADP)氨监测网络(AMON)和东南部气溶胶研究和表征(SEARCH)网络等监测网络的数据和来自社区多尺度空气质量(CMAQ)模式的模拟数据来估计干沉降。然后，将这些干沉降值估计值与NADP国家趋势网络(NTN)的湿沉降值相结合，得出硫和氮的总沉降值。使用这种方法编制的数据可通过CASTNET网站获得。
Atmospheric deposition of nitrogen and sulfur causes many deleterious effects on ecosystems including acidification and excess eutrophication. Assessments to support development of strategies to mitigate these effects require spatially and temporally continuous values of nitrogen and sulfur deposition. In the U.S., national monitoring networks exist that provide values of wet and dry deposition at discrete locations. While wet deposition can be interpolated between the monitoring locations, dry deposition cannot. Additionally, monitoring networks do not measure the complete suite of chemicals that contribute to total sulfur and nitrogen deposition. Regional air quality models provide spatially continuous values of deposition of monitored species as well as important unmeasured species. However, air quality modeling values are not generally available for an extended continuous time period. Air quality modeling results may also be biased for some chemical species. We developed a novel approach for estimating dry deposition using data from monitoring networks such as the Clean Air Status and Trends Network (CASTNET), the National Atmospheric Deposition Program (NADP) Ammonia Monitoring Network (AMoN), and the Southeastern Aerosol Research and Characterization (SEARCH) network and modeled data from the Community Multiscale Air Quality (CMAQ) model. These dry deposition values estimates are then combined with wet deposition values from the NADP National Trends Network (NTN) to develop values of total deposition of sulfur and nitrogen. Data developed using this method are made available via the CASTNET website.
影响因子：
6.6
作者：
Heisler J;Glibert P;Burkholder J;Anderson D;Cochlan W;Dennison W;Gobler C;Dortch Q;Heil C;Humphries E;Lewitus A;Magnien R;Marshall H;Sellner K;Stockwell D;Stoecker D;Suddleson M
通讯作者：
Suddleson M
影响因子：
6.6
作者：
Anderson DM;Burkholder JM;Cochlan WP;Glibert PM;Gobler CJ;Heil CA;Kudela R;Parsons ML;Rensel JE;Townsend DW;Trainer VL;Vargo GA
通讯作者：
Vargo GA