A decreasing vanadium footprint of bunker fuel emissions

Sep 11, 2018 - ... Workers and Local Residents to Short- and Medium-Chain Chlorinated Paraffins in a Mega E-waste Recycling Industrial Park in South C...
0 downloads 0 Views 2MB Size
Subscriber access provided by Kaohsiung Medical University

Characterization of Natural and Affected Environments

A decreasing vanadium footprint of bunker fuel emissions Nicholas James Spada, Xiaoya Cheng, Warren H. White, and Nicole Pauly Hyslop Environ. Sci. Technol., Just Accepted Manuscript • DOI: 10.1021/acs.est.8b02942 • Publication Date (Web): 11 Sep 2018 Downloaded from http://pubs.acs.org on September 12, 2018

Just Accepted “Just Accepted” manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides “Just Accepted” as a service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. “Just Accepted” manuscripts appear in full in PDF format accompanied by an HTML abstract. “Just Accepted” manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are citable by the Digital Object Identifier (DOI®). “Just Accepted” is an optional service offered to authors. Therefore, the “Just Accepted” Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the “Just Accepted” Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these “Just Accepted” manuscripts.

is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Published by American Chemical Society. Copyright © American Chemical Society. However, no copyright claim is made to original U.S. Government works, or works produced by employees of any Commonwealth realm Crown government in the course of their duties.

Page 1 of 19

Environmental Science & Technology

1

A decreasing vanadium footprint of bunker fuel emissions

2

Nicholas J. Spada*, Xiaoya Cheng, Warren H. White, Nicole P. Hyslop

3

Air Quality Research Center, University of California-Davis, One Shields Ave, Davis, CA

4

95616, USA

5

*Corresponding Author: Crocker Nuclear Lab / Jungerman Hall, University of California, Davis,

6

1 Shields Ave, Davis, California, 95616. [email protected]

7

Abstract

8

The Interagency Monitoring of Protected Visual Environments (IMPROVE) network measures

9

the chemical composition of atmospheric particulate matter at over 160 locations throughout the

10

United States. As part of the routine quality control process, we noted decreases in the network-

11

wide vanadium (V) and nickel (Ni) concentrations in 2015 relative to the previous years.

12

Enriched V and Ni with respect to soil is indicative of heavy fuel oil burning and are often used

13

as tracers for emissions from marine vessels. Multiple regulations on the fuel used by marine

14

vessels were implemented in North America since 2010, and the most sweeping regulation was

15

implemented at the start of 2015. The 2015 regulations reduced the allowable fuel oil sulfur

16

concentrations within the North America Emissions Control Area from 1.0% to 0.1% to reduce

17

the environmental and human health impacts of sulfates. As a side effect, these requirements

18

economically favored fuels with lower V and Ni concentrations. The atmospheric concentrations

19

of V and Ni decreased markedly at many IMPROVE monitoring sites, particularly sites near

20

major ports. Between 2011 and 2015, annual mean V concentrations measured on IMPROVE 1 ACS Paragon Plus Environment

Environmental Science & Technology

21

samples collected near the ports of Seattle, Washington and New Orleans, Louisiana decreased

22

by 35% and 85%, respectively. These decreases have brought the coastal V and Ni

23

concentrations much closer to those measured far inland.

24

TOC Art

25

26

Introduction

27

Oceanic transport is a critical component of international trade. Approximately 93,000 vessels

28

carried 10.3 billion metric tons globally in 2016.1 As such, marine shipping is a significant

29

contributor to anthropogenic emissions. Studies in the early 2000s have estimated global

30

contributions of shipping emissions of 15% for nitric oxides (NOx), 5-8% of sulfur oxides (SOx),

31

and 1.2-1.6 million metric tons of particulate matter (PM) with aerodynamic diameter of 10 um

32

or less (PM10).2 Environmentally, NOx is a precursor for tropospheric ozone formation, SOx

33

contributes to acidification of the oceans and acid rain, while PM induces both positive and

34

negative radiative forcings depending on particle morphology and composition.3, 4 Human health

35

effects were estimated using emissions inventories with cardiopulmonary and lung cancer

36

concentration-risk functions, which estimated 60,000 excess deaths per year due to marine vessel

37

emissions prior to regulatory changes.2 To address air quality concerns, the International 2 ACS Paragon Plus Environment

Page 2 of 19

Page 3 of 19

Environmental Science & Technology

38

Maritime Organization (IMO) has implemented restrictions on the fuel compositions used by this

39

international fleet.

40

Changes in marine fuel oil (MFO, or “bunker fuel”) composition resulted from IMO regulations

41

limiting sulfur (S) content in MFO. The United States and Canada established the North

42

American Emissions Control Area (ECA) around their borders in 2010, and the ECA became

43

enforceable in August 2012.5 The regulations governing vessels within an ECA limited the sulfur

44

content in MFO to below 1.0% in 2010 and below 0.1% in 2015, as shown in Figure 1. On a

45

slightly accelerated schedule, the California Air Resources Board (CARB) enacted similar

46

regulations on ships traveling within 24 nautical miles of the California coastline, also shown in

47

Figure 1, specifying sulfur restrictions of 0.1% starting January 1, 2014.6 None of these

48

regulations specified reductions in vanadium (V) or nickel (Ni) explicitly, but the low-sulfur fuel

49

used to meet the regulations also contained lower levels of V and Ni due to the fuel oil

50

refinement process. V is soluble in all crude oils and is of particular interest to ship owners as it

51

causes fouling and high temperature corrosion of exhaust components.7 Industry specifications

52

limit V levels in various fuel grades to the 100s of mg/kg7 while Ni levels are approximately

53

one-tenth the concentration of V8.

54 55 56 57

Figure 1. International Maritime Organization (IMO) and California Air Resources Board (ARB) fuel regulations on sulfur (S) content. The California regulations differentiate marine gas oil (DMA) and marine diesel oil (DMB).

3 ACS Paragon Plus Environment

Environmental Science & Technology

Page 4 of 19

58

Anthropogenic sources of atmospheric V and Ni include oil refineries, oil-fired power plants,

59

and oil-fired home heating systems.9-12 Where contributions from these land-based sources can

60

be discounted, atmospheric particulate V is widely utilized as a tracer of marine diesel emissions.

61

Recent studies have reported on the decline in detectable emissions from marine vessels. On-

62

board measurements in the Baltic Sea by Zetterdahl, et al.

63

mass concentrations and 80% for SO2 concentrations after the IMO 2015 regulation took effect.

64

Tao, et al.

65

between 2008 and 2010 during Phase I of the CARB regulations. Kotchenruther employed

66

positive matrix factorization (PMF) on IMPROVE PM2.5 (PM with aerodynamic diameter of 2.5

67

um or less) speciation data to estimate effects of the regulations along the west coast of the

68

U.S.15 and at coastal and near coastal monitoring sites of the contiguous U.S.16; both studies

69

found significant reductions in V and Ni signatures related to fuel oil combustion before and

70

after regulations were enacted, with decreases of 30-52% along the western U.S. coast

71

specifically, and 29-65% along the entire contiguous U.S. coasts.

72

The present study expands on the previous work by considering all IMPROVE sites, including

73

non-coastal sites and sites in Hawai’i, Alaska, and the U.S. Virgin Islands. Examining the

74

IMPROVE network as a whole provides a striking perspective on the impact of shipping

75

emissions in general and the ECA regulations in particular. Our before-and-after maps of

76

IMPROVE concentrations

77

regulations' impact. Concentrations at any one location can vary from year to year for any

78

number of reasons, ranging from real shifts in weather patterns or real changes in economic

79

activity and emissions, to measurement artifacts potentially introduced by new filter media,

80

measurement protocols, or instrument systems.

14

13

found a decrease of 67% for PM

observed V decreases ranging from 28 to 64% in the Bay Area of California

reveal

a

clear geographic

footprint

of

the

The fact that sharply lower vanadium

4 ACS Paragon Plus Environment

Page 5 of 19

Environmental Science & Technology

81

concentrations were

observed

only

at

near-coastal

sites

effectively

excludes generic

82

measurement issues as possible explanations, due to IMPROVE's centralized analysis and

83

standardized sampling. Moreover the difference between this behavior and that of chlorine,

84

which showed no such change, argues against a shift in atmospheric transport patterns as an

85

explanation. We are left, then, with the observation that regulatory restrictions on marine bunker

86

fuel emissions coincided with distinct reductions in vanadium, more or less exactly when and

87

where they were expected. This distinct spatio-temporal signature provides an independent

88

source of confidence in the specificity of our attribution of previously elevated vanadium

89

concentrations to marine bunker fuel emissions.

90

91

Materials and Methods

92

The Interagency Monitoring of Protected Visual Environments (IMPROVE) network

93

characterizes atmospheric particulate matter (PM) at over 160 locations throughout the United

94

States, primarily in remote locations.17, 18 IMPROVE collects samples of PM over 24 hours every

95

3 days at each site. Three filter samples of fine particles (Dap ≤ 2.5 µm PM2.5) and one filter

96

sample of PM10 (Dap ≤ 10 µm) are collected during each sample period. The three PM2.5 samples

97

are collected on three different filter substrates: polytetrafluoroethylene (PTFE), nylon, and

98

quartz. Multiple analyses are performed on the filters to determine the bulk chemical and optical

99

properties of the PM: mass by gravimetry, elements by energy-dispersive X-ray fluorescence

100

(ED-XRF), light absorption by a hybrid integrating plate and sphere system (HIPS), carbon

101

fractions by thermal-optical reflectance (TOR), and anions by ion chromatography (IC). The data

102

can be downloaded from http://views.cira.colostate.edu/fed/. All valid data (no null code) were 5 ACS Paragon Plus Environment

Environmental Science & Technology

103

included in this study. A total of 154 sites met the requirement that all parameters included in

104

this study were at least 75% complete (number of valid measurements / total number of

105

scheduled measurements) for each year of the study, 2011 through 2016. Values below the

106

reported minimum detectable limit were included in the averaging so that the results were not

107

skewed in the positive direction.

108

V, Cl, and Ni are measured by ED-XRF on the PM2.5 PTFE samples. The same analytical

109

instrumentation (PANalytical, Netherlands) was used throughout the years included in this

110

analysis, avoiding changes in analytical technique that might otherwise introduce artificial

111

discontinuities or trends.19 Limits of detection vary per batch of filters and ranged from 0.10 to

112

0.22 ng m-3 for both V and Ni during the years of interest. Prior to the ECA regulations, V and

113

Ni concentrations at coastal sites are highly variable but often an order of magnitude or two

114

above these limits of detection. Recently, the quoted or reference values for the V calibration

115

standards used to calibrate the XRF instruments were found to be incorrect, causing a

116

multiplicative bias in all V concentrations reported from January 2011 through October 201720;

117

all the V concentrations used in this study have been corrected as advised by Trzepla. The

118

calibration and its bias were both consistent throughout the years under study, so this correction

119

has no effect on the relative changes observed over time.

120

The influence of natural marine emissions within the U.S. is illustrated by a map of elemental

121

chlorine (Cl) concentrations; Figure 3 shows a bubble map of the annual average Cl

122

concentrations measured at individual IMPROVE sites in 2011 and 2015. The year 2011 was

123

chosen because it was the earliest year that IMPROVE samples were analyzed with new ED-

124

XRF instruments, and 2015 offered the first available complete year of data since the

6 ACS Paragon Plus Environment

Page 6 of 19

Page 7 of 19

Environmental Science & Technology

125

implementation of the most recent ECA regulation. The circle diameters correspond to the

126

magnitude of the Cl concentrations, with consistent scales used for 2011 and 2015, including all

127

insets. The coastal sites stand out prominently on this map. The 2015 Cl concentrations measured

128

were generally consistent with the 2011 measurements, which helps alleviate concerns that

129

atmospheric conditions may have been dramatically different during these two years or that the

130

analytical measurements were not stable since Cl is also measured by ED-XRF on the PTFE

131

filter. Cl concentrations are consistent at most sites (bubbles are similarly sized) between 2011

132

and 2015, suggesting natural marine emissions affected the sites similarly in the two years and

133

the analytical measurements were stable.

7 ACS Paragon Plus Environment

Environmental Science & Technology

134 135 136 137 138

Figure 2. Annual average Cl concentrations measured during 2011 and 2015. The Emissions Control Area (ECA) border is shown in green asterisks. Sites in Table 1 are labeled and identified by a black dot. The 2011 values (in blue) are shown in the inset maps but are eclipsed by the 2015 concentrations (in red), reinforcing the consistent measurements at these sites.

139

Results and Discussion

140

The annual mean V concentrations for years 2011 and 2015 are shown in Figure 3. Again, the

141

coastal sites stand out on this map, particularly those near major shipping ports, and there are

142

substantial decreases in the V concentrations between 2011 and 2015 at many of those coastal

143

sites. Note that most IMPROVE sites are located in rural areas far away from shipping ports. It is 8 ACS Paragon Plus Environment

Page 8 of 19

Page 9 of 19

Environmental Science & Technology

144

interesting that the Cl concentrations decrease far more rapidly moving inland from the

145

coastlines than V concentrations, The first explanation for this is that there are other sources of

146

Ni and V at inland locations (e.g., oil refining), whereas inland sources of Cl are rare. In

147

addition, dry deposition and dechlorination effectively eliminate natural marine aerosols from

148

penetrating inland.21 Emissions from marine vessels, on the other hand, may have longer

149

atmospheric lifetimes due to hydrophobic organic coatings of fluorene, fluoranthene, and

150

phenanthrene acquired during initial particle formation and condensation in the effluent gases

151

(22), and thus transport further inland. Attesting to the stability of the analytical measurements,

152

many sites measured consistent annual mean V concentrations between 2011 and 2015,

153

particularly interior sites and coastal sites close to the ECA border.

154

Many of the largest V decreases were observed in the northeastern U.S. along with Washington

155

State near Tacoma/Seattle and downwind of the Los Angeles/Long Beach ports. In the northeast,

156

decreases ranged from 62% (observed at PACK1, New Hampshire) to 90% (at BRIG1, New

157

Jersey) in annual average V concentrations between 2011 and 2015. The Washington State sites

158

decreased between 50% (WHPA1) and 89% (MAKA2) while southern California sites decreased

159

between 46% (SAGA1) and 80% (AGTI1). Complementary information about these select sites

160

is listed in Table 1. An interactive IMPROVE site browser is available on the Federal Land

161

Manager Environmental Database website, at http://views.cira.colostate.edu/fed/SiteBrowser/.

162

The 2015 V concentrations for most of these affected sites dropped to levels near the reported

163

detection limit. It is important to note that fuel oils, which also contain V, are used for home

164

heating in the northeastern U.S.; this study did not attempt to differentiate between marine vessel

165

and home heating signatures, but the temporal and geospatial profiles suggest the V decline

166

results from the ECA regulations. 9 ACS Paragon Plus Environment

Environmental Science & Technology

Page 10 of 19

167

168 169 170 171

Figure 3. Annual average vanadium concentrations measured before and after fuel regulation regimes. Note that the Cl concentrations shown in Figure 2 were very low in the areas north of Texas and Louisiana whereas the V concentrations were elevated and did not change from 2011 to 2015. Sites in Table 1 are labeled and identified by a black dot.

172 Site Code ACAD1 AGTI1 BRIG1 BRIS1 MAKA2 MAVI1 NEBR1 OLYM1

State Maine California New Jersey Louisiana Washington Massachusetts Nebraska Washington

Elevation, m Nearest Seaport 157 Bar Harbor 508 Long Beach 5 Cape May -7 New Orleans 480 Victoria 2 New Bedford 883 Houston 600 Seattle 10 ACS Paragon Plus Environment

Distance to Seaport, km 4 120 70 31 92 36 1,434 64

Page 11 of 19

Environmental Science & Technology

ORPI1 PACK1 PUSO1 SAGA1 VIIS1 WHPA1 WIMO1

Arizona Massachusetts Washington California US Virgin Islands Washington Oklahoma

504 695 98 1791 51 1827 509

San Diego Boston Harbor Seattle Long Beach Cruz Bay Foss Waterway Houston

415 90 5 60 1 110 654

173

Table 1. Additional location details for IMPROVE sampling locations included in the discussion.

174

An advantage of including non-coastal sites in the analysis was finding V decreases in

175

unexpected locations. Organ Pipe National Park, Arizona (ORPI1), located near the terminus of

176

the Gulf of California, along with other non-coastal sites in Arizona, show elevated V and Cl

177

signatures relative to the network average along with a significant decline in V concentrations

178

between 2011 and 2015. Although there are no major ports or shipping lanes in the northern

179

portion of the Gulf of California as of 2018, air mass trajectories predicted by HYSPLIT23

180

indicate the Arizona sites were influenced by a combination of transport from the southern coast

181

of Mexico as well as the Los Angeles and Long Beach ports. Another interesting find was a

182

cluster of IMPROVE sites located in Oklahoma, Kansas, Arkansas, and Missouri, where the

183

topography is relatively flat with little to impede the PM transported by the prevailing Gulf of

184

Mexico breeze. V concentrations in this area remained elevated above other inland sites,

185

suggesting these sites may be affected by the vast oil refining activities and large shipping ports

186

along the U.S. gulf coast. HYSPLIT trajectories for these locations supported this hypothesis and

187

were included in the supporting information.

188

Sites in Hawai’i, Alaska, and those near the Caribbean showed little or no decrease in V

189

concentrations between 2011 and 2015. The HAVO1 site is located at Hawai’i Volcanoes

190

National Park at an elevation of 1.3 km and is influenced by the nearby Kīlauea volcano, which

191

is reflected in the low V/Ni ratio (higher Ni concentrations relative to V from volcanism). The 11 ACS Paragon Plus Environment

Environmental Science & Technology

192

HACR1 site is a free tropospheric monitoring station located at Haleakalā National Park at an

193

elevation of 2.2 km, and similar to the Mauna Loa Observatory, this site experiences local PM

194

influences only during the daytime upslope flow regime.24, 25 In Alaska, the SIME1 site is close

195

to sea level (57 m) and very close to the island’s fishing port (~1 km) to the northeast; however,

196

V and Ni measurements are rarely above the detection limits (19 and 14% above detection limits

197

for the entire study period, respectively). This is likely due to local wind patterns from the south

198

that supply this site with clean marine air, as confirmed by back trajectories and indicated by the

199

Cl concentrations shown in Figure 2. Finally, IMPROVE sites in Florida and the U.S. Virgin

200

Islands did not decrease significantly in 2015 with respect to 2011. The Florida sites may have

201

been impacted by other sources of V and Ni sources such as oil refining along the Gulf Coast or

202

transport from the relatively nearby ECA border, as proposed in previous assessments of this

203

area16. The Virgin Islands site, VIIS1, presents V concentrations higher than the network average

204

in 2015 (1.1 ng m-3 annual mean) and only a slight decrease in V after the IMO regulations were

205

enacted (0.9 ng m-3 2016 annual mean). The site is less than 6 km from the ECA border. These

206

findings suggest that vessels operating in the Caribbean continued using the lower grade fuel oils

207

since this area does not require fuel oil-based home heating, is mostly outside the boundaries of

208

the ECA, and the large oil refinery on St. Croix was not operating between 2012 and 2017.

209

The Ni concentration patterns in 2011 and 2015 are very similar to those of V shown in Figure 3

210

(see Figure S1 in the Supporting Information), decreasing at the same sites as V concentrations.

211

Since the concentration of Ni in MFO is much lower than that of V, the absolute decreases in Ni

212

concentrations were not as large as those observed in V. Other measured parameters, including

213

soil elements, carbon, and ions, were compared between the two years of interest, 2011 and

214

2015, to determine if concentrations of other species related to shipping emissions decreased; 12 ACS Paragon Plus Environment

Page 12 of 19

Page 13 of 19

Environmental Science & Technology

215

Figure 4 shows the concentration distributions of daily measurements at select sites for 2011

216

(blue) and 2015 (red). The distributions for all parameters in Figure 4 excluding V and Ni were

217

very similar between the two years. Despite the ECA regulations targeting sulfur reductions in

218

MFO, S did not show dramatic decreases at the coastal sites, although Figure 4 shows the S and

219

sulfate distributions in 2015 were slightly lower than in 2011. On land, marine shipping is a

220

minor source of S compared to other sources.26-29

221 222 223

Figure 4. Empirical cumulative distribution functions for representative measurement parameters (columns) and sampling sites (rows). Parameter TC (total carbon) is the sum of the elemental and

13 ACS Paragon Plus Environment

Environmental Science & Technology

224 225

organic carbon (EC and OC, respectively) as reported by the thermal optical reflectance (TOR) method.

226

Statistical analyses were explored to quantify the observed differences, as has been performed in

227

previous studies.14 Since the PM data sets were not normally distributed, parametric statistical

228

tests were not appropriate. Additionally, the national data set is large, so the prediction errors

229

were artificially small, leading to potentially over-confident results. The Mood’s median test was

230

performed to compare changes over each pair of years included in this study (i.e., 2011-2012,

231

2012-2013, etc.). With a conservative alpha level of 0.001, the results matched the visual

232

observations of the maps. Linear trend analyses were explored but were not found to be useful as

233

the decrease in V and Ni concentrations presented as a step in the data rather than a gradual

234

decrease. The results of these analyses are included in the supporting information.

235

Daily V profiles for individual IMPROVE sites offer complementary views of the atmospheric

236

response to the ECA regulations. Time-series plots for selected sites are shown in Figure 5 from

237

2011 through 2016. The daily V concentrations at the coastal sites were normalized by the

238

average of two inland sites (NEBR1 and WIMO1) aggregated over the entire study period

239

(January 1, 2011 through December 31, 2016). The daily concentrations were normalized so that

240

the progression towards rural inland levels is more clearly visible. Coastal sites were chosen by

241

proximity to major shipping ports and high concentrations in 2011 while inland sites were

242

chosen by proximity to the geographic center of the contiguous US. The vertical black line on

243

January 1, 2012 indicates the shift from 4.5 to 3.5% sulfur content in fuel oils used outside an

244

ECA while the vertical black line on January 1, 2015 indicates the shift from 3.5 to 0.1% sulfur

245

content inside an ECA. The horizontal red line indicates a ratio of one between the coastal

246

measurement and the average inland concentration. The summer V peaks are consistent with

247

seasonal shipping trends, which also peak during the summer. The lingering high V 14 ACS Paragon Plus Environment

Page 14 of 19

Page 15 of 19

Environmental Science & Technology

248

concentrations at the Seattle, Washington (PUSO1) IMPROVE site in 2015 suggest that

249

compliance in the Seattle/Tacoma harbors may have taken longer than along the east coast of the

250

U.S., possibly due to differences in original source of fuel oil, vessel/engine types, low sulfur

251

fuel availability, or enforcement practices. V concentrations at PUSO1 were lower in 2016 (3.1

252

ng m-3 maximum daily value) than in 2015 (9.7 ng m-3 maximum daily value).

253 254 255 256 257 258 259

Figure 5. Daily V concentrations at coastal sites were normalized by the average of V concentrations at two inland sites (NEBR1 and WIMO1, listed in Table 1) from January 1, 2011 through December 31, 2016. Sites in the top row (BRIS1, MAVI1, and SWAN1) are located on the eastern coast of the US while the sites in the bottom row (AGTI1, MAKA2, and PUSO1) are located on the western coast. The vertical black lines indicate significant IMO regulation start dates. The horizontal red line represents a ratio of one.

260

Acknowledgements

261

This work was supported by the National Park Service (National Park Service cooperative

262

agreement P11AC91045). The assumptions, findings, conclusions, judgements, and views

263

presented herein are those of the authors and should not be interpreted as necessarily

15 ACS Paragon Plus Environment

Environmental Science & Technology

264

representing the National Park Service policies. IMPROVE is a collaborative association of

265

state, tribal, and federal agencies, and international partners. US Environmental Protection

266

Agency is the primary funding source, with contracting and research support from the National

267

Park Service. The Air Quality Research Center at the University of California, Davis is the

268

central analytical laboratory, with ion analysis provided by Research Triangle Institute, and

269

carbon analysis provided by Desert Research Institute.

270

Supporting Information.

271



Map of nickel concentrations similar to Figures 2 and 3

272



Example HYSPLIT trajectories from inland areas of interest, specifically Arizona and

273 274

Oklahoma •

275 276

The percent of measured values above the minimum detection limit for each IMPROVE site and measurement parameter included in this study



Step-by-step description of statistical analysis performed

277

References

278 279 280 281 282 283 284 285 286 287 288 289 290 291

1. UNCTAD 2017 Handbook of Statistics; United Nations: 2017. 2. Corbett, J. J.; Winebrake, J. J.; Green, E. H.; Kasibhatla, P.; Eyring, V.; Lauer, A., Mortality from ship emissions: A global assessment. Environ. Sci. Technol. 2007, 41, (24), 8512-8518. 3. IPCC Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of theIntergovernmental Panel on Climate Change; Geneva, Switzerland, 2014. 4. Seinfeld, J. H.; Carmichael, G. R.; Arimoto, R.; Conant, W. C.; Brechtel, F. J.; Bates, T. S.; Cahill, T. A.; Clarke, A. D.; Doherty, S. J.; Flatau, P. J.; Huebert, B. J.; Kim, J.; Markowicz, K. M.; Quinn, P. K.; Russell, L. M.; Russell, P. B.; Shimizu, A.; Shinozuka, Y.; Song, C. H.; Tang, Y. H.; Uno, I.; Vogelmann, A. M.; Weber, R. J.; Woo, J. H.; Zhang, X. Y., ACE-ASIA - Regional climatic and atmospheric chemical effects of Asian dust and pollution. Bull. Amer. Meteorol. Soc. 2004, 85, (3), 367-380. 5. EPA, Designation of North American Emission Control Area to Reduce Emissions from Ships. In Office of Transportation and Air Quality, Ed. 2010. 16 ACS Paragon Plus Environment

Page 16 of 19

Page 17 of 19

292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336

Environmental Science & Technology

6. CARB Ocean Going Vessels Fuel Rule. https://www.arb.ca.gov/ports/marinevess/ogv.htm (November 22, 2016), 7. IBIA VANADIUM AND SULPHUR IN MARINE FUELS; The International Bunker Industry Association: 1998; http://ibia.net/wp-content/uploads/2014/06/Vanadium-Sulphur-in-MarineFuels.pdf. 8. Agrawal, H.; Malloy, Q. G. J.; Welch, W. A.; Miller, J. W.; Cocker, D. R., In-use gaseous and particulate matter emissions from a modern ocean going container vessel. Atmos. Environ. 2008, 42, (21), 5504-5510. 9. Kulkarni, P.; Chellam, S.; Fraser, M. P., Tracking petroleum refinery emission events using lanthanum and lanthanides as elemental markers for PM2.5. Environ. Sci. Technol. 2007, 41, (19), 6748-6754. 10. Moreno, T.; Querol, X.; Alastuey, A.; de la Rosa, J.; de la Campa, A. M. S.; Minguillon, M.; Pandolfi, M.; Gonzalez-Castanedo, Y.; Monfort, E.; Gibbons, W., Variations in vanadium, nickel and lanthanoid element concentrations in urban air. Sci. Total Environ. 2010, 408, (20), 4569-4579. 11. Reff, A.; Bhave, P. V.; Simon, H.; Pace, T. G.; Pouliot, G. A.; Mobley, J. D.; Houyoux, M., Emissions Inventory of PM2.5 Trace Elements across the United States. Environ. Sci. Technol. 2009, 43, (15), 5790-5796. 12. Peltier, R. E.; Lippmann, M., Residual oil combustion: 2. Distributions of airborne nickel and vanadium within New York City. J. Expo. Sci. Environ. Epidemiol. 2010, 20, (4), 342-350. 13. Zetterdahl, M.; Moldanová, J.; Pei, X.; Pathak, R. K.; Demirdjian, B., Impact of the 0.1% fuel sulfur content limit in SECA on particle and gaseous emissions from marine vessels. Atmos. Environ. 2016, 145, 338-345. 14. Tao, L.; Fairley, D.; Kleeman, M. J.; Harley, R. A., Effects of Switching to Lower Sulfur Marine Fuel Oil on Air Quality in the San Francisco Bay Area. Environ. Sci. Technol. 2013, 47, (18), 10171-10178. 15. Kotchenruther, R. A., The effects of marine vessel fuel sulfur regulations on ambient PM2.5 along the west coast of the US. Atmos. Environ. 2015, 103, 121-128. 16. Kotchenruther, R. A., The effects of marine vessel fuel sulfur regulations on ambient PM2.5 at coastal and near coastal monitoring sites in the U.S. Atmos. Environ. 2017, 151, 52-61. 17. Malm, W. C.; Hand, J. L., An examination of the physical and optical properties of aerosols collected in the IMPROVE program. Atmos. Environ. 2007, 41, (16), 3407-3427. 18. Solomon, P. A.; Crumpler, D.; Flanagan, J. B.; Jayanty, R. K. M.; Rickman, E. E.; McDade, C. E., US National PM2.5 Chemical Speciation Monitoring Networks-CSN and IMPROVE: Description of networks. J. Air Waste Manage. Assoc. 2014, 64, (12), 1410-1438. 19. Hyslop, N. P.; Trzepla, K.; White, W. H., Assessing the Suitability of Historical PM2.5 Element Measurements for Trend Analysis. Environ. Sci. Technol. 2015, 49, (15), 92479255. 20. Trzepla, K. Calibration bias in reported Vanadium concentration; 2018; http://vista.cira.colostate.edu/improve/Data/QA_QC/Advisory/da0038/da0038_V_advisory.p df. 21. Laskin, A.; Moffet, R. C.; Gilles, M. K.; Fast, J. D.; Zaveri, R. A.; Wang, B. B.; Nigge, P.; Shutthanandan, J., Tropospheric chemistry of internally mixed sea salt and organic particles: Surprising reactivity of NaCl with weak organic acids. J. Geophys. Res.-Atmos. 2012, 117, 12.

17 ACS Paragon Plus Environment

Environmental Science & Technology

337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361

22. Contini, D.; Gambaro, A.; Belosi, F.; De Pieri, S.; Cairns, W. R. L.; Donateo, A.; Zanotto, E.; Citron, M., The direct influence of ship traffic on atmospheric PM2.5, PM10 and PAH in Venice. J. Environ. Manage. 2011, 92, (9), 2119-2129. 23. Draxler, R. R.; Rolph, G. D. HYSPLIT (HYbrid Single-Particle Lagrangian Integrated Trajectory). 24. Hyslop, N. P.; Trzepla, K.; Wallis, C. D.; Matzoll, A. K.; White, W. H., Technical note: A 23-year record of twice-weekly aerosol composition measurements at Mauna Loa Observatory. Atmos. Environ. 2013, 80, 259-263. 25. Sharma, N. C. P.; Barnes, J. E., Boundary Layer Characteristics over a High Altitude Station, Mauna Loa Observatory. Aerosol Air Qual. Res. 2016, 16, (3), 729-737. 26. Corbett, J. J.; Fischbeck, P. S., Emissions from waterborne commerce vessels in United States continental and inland waterways. Environ. Sci. Technol. 2000, 34, (15), 3254-3260. 27. Hand, J. L.; Schichtel, B. A.; Malm, W. C.; Pitchford, M. L., Particulate sulfate ion concentration and SO2 emission trends in the United States from the early 1990s through 2010. Atmos. Chem. Phys. 2012, 12, (21), 10353-10365. 28. Hand, J. L.; Schichtel, B. A.; Pitchford, M.; Malm, W. C.; Frank, N. H., Seasonal composition of remote and urban fine particulate matter in the United States. J. Geophys. Res.-Atmos. 2012, 117, 22. 29. Bond, T. C.; Doherty, S. J.; Fahey, D. W.; Forster, P. M.; Berntsen, T.; DeAngelo, B. J.; Flanner, M. G.; Ghan, S.; Karcher, B.; Koch, D.; Kinne, S.; Kondo, Y.; Quinn, P. K.; Sarofim, M. C.; Schultz, M. G.; Schulz, M.; Venkataraman, C.; Zhang, H.; Zhang, S.; Bellouin, N.; Guttikunda, S. K.; Hopke, P. K.; Jacobson, M. Z.; Kaiser, J. W.; Klimont, Z.; Lohmann, U.; Schwarz, J. P.; Shindell, D.; Storelvmo, T.; Warren, S. G.; Zender, C. S., Bounding the role of black carbon in the climate system: A scientific assessment. J. Geophys. Res.-Atmos. 2013, 118, (11), 5380-5552.

362

18 ACS Paragon Plus Environment

Page 18 of 19

PageEnvironmental 19 of 19 Science & Technology

ACS Paragon Plus Environment