Atmospheric Mercury Deposition to the Great Lakes

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Atmospheric Mercury Deposition to the Great Lakes A Multi-Year Study Supported by the Great Lakes Restoration Initia Principal Investigator: Dr. Mark Cohen, NOAA Air Resources Laboratory FY10 GLRI funding: Baseline analysis for 2005 Used “EDAS” meteorological data One set of model parameters and emissions data Summary: http://www.arl.noaa.gov/documents/reports/GLRI_Atmos_Mercury_Summary.pdf Final Report: http://www.arl.noaa.gov/documents/reports/GLRI_FY2010_Atmospheric_Mercury_Final_Report_2011_Dec_16.pdf Recent Presentations: http://www.arl.noaa.gov/documents/reports/Cohen_ARL_Seminar_Feb_7_2013.pptx http://www.arl.noaa.gov/documents/reports/ICMGP_2013_Edinburgh_Cohen_Presentation.pptx FY11 GLRI funding: Sensitivity analysis Used “NARR” meteorological data Numerous variations of model parameters and emissions data Overall results – even for largest variations found – not changed dramatically Conclusion: results are robust Final Report: http://www.arl.noaa.gov/documents/reports/GLRI_FY2011_Atmospheric_Mercury_Final_Report_2013_June_30.pdf FY12 GLRI funding: Analysis of alternative future emissions scenar Work is beginning on this policy-relevant analysis FY13 GLRI funding (and beyond): Updates to more recent years

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Atmospheric Mercury Deposition to the Great Lakes A Multi-Year Study Supported by the Great Lakes Restoration Initiative Principal Investigator: Dr. Mark Cohen, NOAA Air Resources Laboratory. FY10 GLRI funding: Baseline analysis for 2005 Used “EDAS” meteorological data - PowerPoint PPT Presentation

Transcript of Atmospheric Mercury Deposition to the Great Lakes

Page 1: Atmospheric Mercury Deposition to the Great Lakes

Atmospheric Mercury Deposition to the Great LakesA Multi-Year Study Supported by the Great Lakes Restoration Initiative

Principal Investigator: Dr. Mark Cohen, NOAA Air Resources Laboratory

FY10 GLRI funding: Baseline analysis for 2005 Used “EDAS” meteorological data

One set of model parameters and emissions data

Summary: http://www.arl.noaa.gov/documents/reports/GLRI_Atmos_Mercury_Summary.pdf

Final Report: http://www.arl.noaa.gov/documents/reports/GLRI_FY2010_Atmospheric_Mercury_Final_Report_2011_Dec_16.pdf

Recent Presentations: http://www.arl.noaa.gov/documents/reports/Cohen_ARL_Seminar_Feb_7_2013.pptxhttp://www.arl.noaa.gov/documents/reports/ICMGP_2013_Edinburgh_Cohen_Presentation.pptx

FY11 GLRI funding: Sensitivity analysis Used “NARR” meteorological data

Numerous variations of model parameters and emissions data

Overall results – even for largest variations found – not changed dramatically

Conclusion: results are robust

Final Report: http://www.arl.noaa.gov/documents/reports/GLRI_FY2011_Atmospheric_Mercury_Final_Report_2013_June_30.pdf

FY12 GLRI funding: Analysis of alternative future emissions scenarios Work is beginning on this policy-relevant analysis

FY13 GLRI funding (and beyond): Updates to more recent years

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Natural23%

Ocean Re-emission

14%

U.S.32%

China14%

Canada3%

India2%

Other Countries12%

Sources of Mercury Deposition to the Great Lakes Basin2005 Baseline Analysis

Total = 11,300 kg/yr

Natural16%

Ocean Re-emission

10%

U.S.49%

China10%

Canada4%

India1%

Other Countries9%

Sources of Mercury Deposition to the Lake Erie Basin

2005 Baseline Analysis

Total = 2,300 kg/yr

2

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Comparison of precipitation measured by rain gauges at Mercury Deposition Network sites with that in the EDAS and NARR

meteorological datasets used to drive the HYSPLIT-Hg model

EDAS used in Phase 1 baseline analysis

NARR used in Phase 2 sensitivity analysis

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U.S, 45%

China, 11%

Canada, 4%

Mexico, 1%

India, 1%

other countries,

9%

ocean re-emit, 11%

natural, 18%

Contributions to 2005 Atmospheric Mercury Deposition to Lake Erie

(EDAS met data)

U.S, 39%

China, 13%

Canada, 3%Mexico, 1%

India, 2%

other countries,

10%

ocean re-emit, 12%

natural, 20%

Contributions to 2005 Atmospheric Mercury Deposition to Lake Erie

(NARR met data)

U.S, 34%

China, 16%

Canada, 3%Mexico, 1%India, 2%

other countries,

12%

ocean re-emit, 16%

natural, 16%

Contributions to 2005 Atmospheric Mercury Deposition to Lake Erie

(NARR met data + "high-range" re-emissions)

U.S, 32%

China, 14%

Canada, 3%Mexico, 1%India, 2%

other countries,

11%

ocean re-emit, 14%

natural, 23%

Contributions to 2005 Atmospheric Mercury Deposition to the Great Lakes Basin

(EDAS met data)

U.S, 23%

China, 17%

Canada, 2%

Mexico, 1%India, 2%

other countries,

13%

ocean re-emit, 16%

natural, 26%

Contributions to 2005 Atmospheric Mercury Deposition to the Great Lakes Basin

(NARR met data)

Overall source attribution results not changed dramatically for Lake Erie (top) or the Great Lakes Basin (bottom) for largest variations in modeling

methodology; 2005 baseline (left); variations (center & right)

U.S, 19%

China, 20%

Canada, 1%Mexico, 1%

India, 3%

other countries,

16%

ocean re-emit, 20%

natural, 20%

Contributions to 2005 Atmospheric Mercury Deposition to the Great Lakes Basin

(NARR met data + "high range" re-emissions)

U.S, 45%

China, 11%

Canada, 4%

Mexico, 1%

India, 1%

other countries,

9%

ocean re-emit, 11%

natural, 18%

Contributions to 2005 Atmospheric Mercury Deposition to Lake Erie

(EDAS met data)

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2005 Atmospheric Mercury Emissions from Large Point Sources

Type of Emissions Sourcecoal-fired power plantsother fuel combustionwaste incinerationmetallurgicalmanufacturing & other

Emissions (kg/yr)

10-50

50-100

100–300

5-10

300–500

500–1000

1000–3000

NOAA Air Resources Laboratory 5

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2005 Atmospheric Mercury Emissions (Direct Anthropogenic + Re-emit + Natural)

Policy-Relevant Scenario Analysis

NOAA Air Resources Laboratory 6

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Geographical Distribution of 2005 Atmospheric Mercury Deposition Contributions to Lake Erie

Policy-Relevant Scenario Analysis

Here’s where the mercury came from that was deposited to Lake Erie

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-500

1,000 1,500 2,000 2,500 3,000 3,500 4,000

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Mer

cury

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Distance of Emissions Source from the Center of Lake Erie

Emissions from Natural Sources

Emissions from Re-Emissions

Emissions from Anthropogenic Sources

A tiny fraction of 2005 global mercury emissions within 500 km of Lake Erie

-

50

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Contributions from Natural Sources

Contributions from Re-Emissions

Contributions from Anthropogenic Sources

Modeling results show that these “regional” emissions are responsible for a large fraction of the modeled 2005 atmospheric deposition

Important policy implications!

Results can be shown in many ways…

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Rank of Source's Atmospheric Mercury Deposition Contribution to Lake Erie

Top 50 Atmospheric Deposition Contributors to Lake Erie

coal fired power plants

other fuel combustion

waste incineration

metallurgical

manufacturing and other

Based on estimated 2005 mercury emissions, e.g., from the 2005 USEPA National Emissions Inventory, and atmospheric fate and transport simulations with the NOAA HYSPLIT-Hg model