Global Nutrient Export from WaterSheds 2 (NEWS 2): Model development and implementation

被引：411

作者：

Mayorga, Emilio ^{[1
]}

Seitzinger, Sybil P. ^{[1
]}

Harrison, John A. ^{[2
]}

Dumont, Egon ^{[3
]}

Beusen, Arthur H. W.

Bouwman, A. F. ^{[4
]}

Fekete, Balazs M. ^{[5
]}

Kroeze, Carolien ^{[6
,7
]}

Van Drecht, Gerard ^{[4
]}

机构：

[1] Rutgers State Univ, Rutgers NOAA CMER Program, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA

[2] Washington State Univ, Sch Earth & Environm Sci, Vancouver, WA 98686 USA

[3] Ctr Ecol & Hydrol, Wallingford OX10 8BB, Oxon, England

[4] Netherlands Environm Assessment Agcy PBL, NL-3720 AH Bilthoven, Netherlands

[5] CUNY City Coll, CUNY Environm Cross Rd Initiat, Global Water Ctr, New York, NY 10031 USA

[6] Open Univ Netherlands, Sch Sci, NL-6401 DL Heerlen, Netherlands

[7] Wageningen Univ, Environm Syst Anal Grp, NL-6700 AA Wageningen, Netherlands

来源：

ENVIRONMENTAL MODELLING & SOFTWARE | 2010年 / 25卷 / 07期

关键词：

Global NEWS; Nutrients; Millennium ecosystem assessment scenarios; Basin models; Global river exports; Coastal inputs; LAND-USE CHANGE; RIVER DISCHARGE; NITROGEN; IMPACT; OCEAN; TRANSPORT; SEDIMENT; CLIMATE; FLUXES; BIOGEOCHEMISTRY;

D O I：

10.1016/j.envsoft.2010.01.007

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Global NEWS is a global, spatially explicit, multi-element and multi-form model of nutrient exports by rivers. Here we present NEWS 2, the new version of Global NEWS developed as part of a Millennium Ecosystem Assessment scenario implementation from hindcast (1970) to contemporary (2000) and future scenario trajectories (2030 & 2050). We provide a detailed model description and present an overview of enhancements to input datasets, emphasizing an integrated view of nutrient form sub-models and contrasts with previous NEWS models (NEWS 1). An important difference with NEWS 1 is our unified model framework (multi-element, multi-form) that facilitates detailed watershed comparisons regionally and by element or form. NEWS 2 performs approximately as well as NEWS 1 while incorporating previously uncharacterized factors. Although contemporary global river export estimates for dissolved inorganic nitrogen (DIN) and particulates show notable reductions, they are within the range of previous studies: global exports for other nutrient forms are comparable to NEWS 1. NEWS 2 can be used as an effective tool to examine the impact of polices to reduce coastal eutrophication at regional to global scales. Continued enhancements will focus on the incorporation of other forms and sub-basin spatial variability in drivers and retention processes. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：837 / 853

页数：17

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