Characterization of tropospheric aerosols over the oceans with the NOAA advanced very high resolution radiometer optical thickness operational product

Journal of Geophysical Research Atmospheres

Volumn 102, Issue 14, 1997, Pages 16889-16909

  Husar, Rudolf B ^a   Prospero, Joseph M ^b   Stowe, Larry L ^c  

^a WASHINGTON UNIVERSITY   (United States)

^b UNIVERSITY OF MIAMI   (United States)

^c OFFICE OF RESEARCH AND APPLICATIONS   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 3643136427     PISSN: 01480227     EISSN: None     Source Type: Journal    
DOI: 10.1029/96jd04009     Document Type: Article

References (131)

1. Ackerman, S. A., and S. K. Cox, Surface weather observations of atmospheric dust over the southeast summer monsoon region, Meteorol. Atmos. Phys., 41, 19-349 1989.
2. Andreae, M. O., Global distribution of fires seen from space, EoS Trans. AGU, 74, 129,135-136, 1993.
3. Andreae, M. O., Climatic effects of changing atmospheric aerosol levels, in World Survey of Climatology, vol. 16, Future Climates of the World, edited by A.. Henderson-Sellers, pp. 341-392, Elsevier, New York, 1995.
4. Andreae, M. O., Raising dust in the greenhouse, Nature, 380, 389-390, 1996.
5. Andreae, M. et al., Biomass burning in the global environment: First results from the IGAC-BIBEX field campaign STARE/TRACE A/SAFARI 92, in Global Atmospheric-Biospheric Chemistry, edited by R. G. Prinn, pp. 83-101, Plenum, New York, 1994.
6. Arimoto, R., B. J. Ray , R. A. Duce, A. D. Hewitt, R. Boldi, and A. Hudson. Concentrations, sources, and fluxes of trace elements in the atmosphere of New Zealand, J. Geophys. Res., 95, 22,389-22,405, 1990.
7. Arimoto, R., R. A. Duce, D. L. Savoie, and J. M. Prospero, Trace elements in aerosol particles from Bermuda and Barbados: Concentrations, sources and relationships to aerosol sulfate, J. Atmos. Chem., 14, 439-457, 1992.
8. Arimoto, R., R. A. Duce, B. J. Ray, W. G. Ellis Jr., J. D. Cullen, and J. T. Merrill, Trace elements in the atmosphere over the North Atlantic, J. Geophys. Res. 100, 1199-1213, 1995.
9. Arimoto, R., R. A. Duce, D. L. Savoie, J. M. Prospero, R. Talbot, J. D. Cullen, U. Tomza, N. F. Lewis, and B. J. Ray, Relationships among aerosol constituents from Asia and the North Pacific during PEM-West A, J. Geophys. Res., 101, 2011-2024, 1996.
10. Artaxo, P., F. Gerab, M. A. Yamasoe, and J. V. Martins, Fine mode aerosol composition at three long-term atmospheric monitoring sites in the Amazon Basin, J. Geophys. Res., 99, 22,857-22,868, 1994.
11. Ayers, G. P., J. P. Ivey, and R. W. Gillett, Coherence between seasonal cycles of dimethyl sulphide, methanesulphonate and sulphate in marine air, Nature, 349, 404-406, 1991.
12. 2) in the equatorial Pacific during the SAGA 3 experiment, J. Geophys. Res., 98, 16,969-16,978, 1993.
13. Benkovitz, C. M., M.T. Scholtz, J. Pacyna, L. Tarrasón, J. Dignon, E. C. Voldner, P. A. Spiro, J. A. Logan, and T. E. Graedel, Global gridded inventories of anthropogenic emissions of sulfur and nitrogen, J. Geophys. Res., 101, 29,239-29,253, 1996.
14. Bergametti, G., A.-L. Dutot, P. Buat-Menard, R. Losno, and E. Remoudaki, Seasonal variability of the elemental composition of atmospheric aerosol particles over the northwestern Mediterranean, Tellus, Ser. B., 41, 353-361, 1989a.
15. Bergametti, G., L. Gomes, E. Remoudaki, M. Desbois, D. Martin, and P. Buat-Menard, Present transport and deposition patterns of African dusts to the North Western Mediterranean, in Paleoclimatology and Paleometeorology: Modern and Past Patterns of Global Atmospheric Transport, pp. 227-252, Kluwer Acad., Norwell, Mass., 1989b.
16. Brustet, J. M., J. B. Vickos, J. Fontan, K. Manissadjan, A. Podaire, and F. Lavenu, Remote sensing of biomass burning in West Africa with NOAA-AVHRR in Global Biomass Burning, edited by J. S. Levine, pp. 47-52, MIT Press, Cambridge, Mass., 1991.
17. Cahoon, D. R., J. S Levine, W. R. Cofer III, J. E. Miller, P. Minnis, G. M. Tennille, T. W. Yip, B. J. Stocks, P. W. Heck, The great Chinese fire of 1987: A view from space, in Global Biomass Burning, edited by J. S. Levine, pp. 61-66, MIT Press, Cambridge, Mass., 1991.
18. Carlson, T. N., and S. G. Benjamin, Radiative heating rates for Saharan dust, J. Atmos. Sci., 37, 193-213, 1980.
19. Carlson, T. N., and J. M. Prospero, The large-scale movement of Saharan air outbreaks over the northern equatorial Atlantic, J. Appl. Meteorol., 11, 283-297, 1972.
20. Charlson, R. J., J. E. Lovelock, M. O. Andreae, and S. G. Warren, Oceanic phytoplankton, atmospheric sulphur, cloud albedo, and climate, Nature, 326, 655-61, 1987.
21. Charlson, R. J., S. E. Schwartz, J. M. Hales, R. D. Cess, J. A. Coakley Jr., J. E. Hansen, and D. J. Hofmann, Climate forcing by anthropogenic aerosols, Science, 255, 423-430, 1992.
22. Chin, M., D. J. Jacob, G. M. Gardner, M. S. Foreman-Fowler, P. A. Spiro, and D. L. Savoie, A global three-dimensional model of tropospheric sulfate, J. Geophys. Res, 101, 18,667-18,690, 1996.
23. Covert, D. S., V. N. Kapustin, P. K. Quinn, and T. S. Bates, New particle formation in the marine boundary layer, J. Geophys. Res., 97, 20,581-20,589, 1992.
24. Delmas, R. A., P. Loudjani, A. Podaire, and J-C. Menaut, Biomass burning in Africa: An assessment of annually burned biomass, in Global Biomass Burning: Atmospheric, Climatic, and Biospheric Implications, edited by J. S. Levine, pp. 126-132. MIT Press, Cambridge, Mass., 1991.
25. Doddridge, B. G., P. A. Dirmeyer, J. T. Merrill, S. J. Oltmans, and R. R. Dickerson, Interannual variability over the eastern North Atlantic Ocean: Chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics, J. Geophys. Res., 99, 22,923-22,948, 1994.
26. Duce, R. A., Sources, distributions, and fluxes of mineral aerosols and their relationship to climate, in, Dahlem Workshop on Aerosol Forcing of Climate, Environmental Sciences Research Report 17, edited by R. J. Charlson and J. Heintzenberg, pp. 43-72, John Wiley, U.K., 1995.
27. Durkee, P. A., F. Pfeil, E. Frost., and R. Shema, Global analysis of aerosol particle characteristics, Atmos. Environ., 25A,. 2457-2471, 1991.
28. Dutton, E. G., P. Reddy, S. Ryan, and J. J. DeLuisi, Features and effects of aerosol optical depth observed at Mauna Loa, Hawaii: 1982-1992, J. Geophys. Res., 99, 8295-8306, 1994.
29. Ellis, W. G., Jr., R. Arimoto, D. L. Savoie, J. T. Merrill, R. A. Duce, and J. M. Prospero, Aerosol selenium at Bermuda and Barbados, J. Geophys. Res., 98, 12,673-12,685, 1993.
30. Erickson, D. J. III, J. T. Merrill, and R. A. Duce, Seasonal estimates of global atmospheric sea-salt distributions, J. Geophys. Res., 91, 1067-1072, 1986.
31. Ferrare, R. A., R. S. Fraser, and Y. J. Kaufman, Satellite measurements of large-scale air pollution: Measurements of forest fire smoke, J. Geophys. Res. 95, 9911-9925, 1990.
32. Galloway, J. N., and D. M. Whelpdale, WATOX-86 overview and western North Atlantic Ocean S and N atmospheric budgets, Global Biogeochem.. Cycles, 1, 261-281, 1987.
33. Galloway, J. N., H. Levy, and P. S. Kasibhatia, Year 2020: Consequences of population growth and development on deposition of oxidized nitrogen, Ambio, 23, 120-123, 1994.
34. Gao, Y., R. Arimoto, M. Y. Zhou, J. T. Merrill, and R. A. Duce, Relationships between the dust concentrations over eastern Asia and the remote North Pacific, J. Geophys. Res., 97, 9867-9872, 1992.
35. Gao, Y., R. Arimoto, R. A. Duce, L. Q. Chen, M. Y. Zhou, and D. Y. Gu, Atmospheric non-sea-salt sulfate, nitrate and methanesulfonate over the China Sea, J. Geophys. Res., 101, 12,601-12,611, 1996.
36. Goudie, A. S., and N. J. Middleton, The changing frequency of dust storms through time, Clim. Change, 20, 197-225, 1992.
37. Gras, J. L., CN, CCN and particle size in southern ocean air at Cape Grim, Atmos. Res., 35, 233-251, 1995.
38. Hao, W. M., and M-H. Liu, Spatial and temporal distribution of tropical biomass burning. Global Biogeochem. Cycles, 8, 495-503, 1994.
39. Hameed, S., and J. Dignon, Global emissions of nitrogen and sulfur oxides in fossil fuel combustion 1970-1986, J. Air Waste Manage. Assoc., 42, 159-163, 1992.
40. Herman, J. R., P. K. Bhartia, O. Torres, C. Hsu, C. Seftor, and E. Celarier, Global distribution of UV-absorbing aerosols from Nimbus 7/TOMS data, J. Geophys. Res., this issue.
41. Holmes, J., and W. Zoller, The elemental signature of transported Asian dust at Mauna Loa Observatory, Tellus, Ser. B., 48, 83-92, 1996.
42. Hsu, N. C., J. R. Herman, P. K. Bhartia, C. J. Seftor, O. Torres, A. M. Thompson, J. F. Gleason, T. F. Eck, and B. N. Holben, Detection of biomass burning smoke from TOMS measurements, Geophys. Res. Lett., 23 (7), 745-748, 1996.
43. Huebert, B. J., T. S. Bates, and N. W. Tindale, Marine aerosol and gas exchange and global atmospheric effects, in Global Atmospheric-Biospheric Chemistry, edited by R. G. Prinn, pp. 39-55, Plenum, New York, 1994.
44. Husar, R. B., and J. D. Husar, Sulphur, in The Earth as Transformed by Human Action, edited by B. L. Turner et al., pp. 409-421, Cambridge Univ. Press, New York, Clark Univ., Cambridge, Mass., 1990.
45. Husar, R. B., and W. E. Wilson, Haze and sulfur emission trends in the Eastern United States, Environ. Sci. Technol., 27, 12-16, 1993.
46. Husar, R. B., J. M. Holloway, D. E. Patterson, and W. E. Wilson, Spatial and temporal pattern of Eastern U.S. haziness, A summary, Atmos. Environ., 15, 1919-1928, 1981.
47. Iacobellis, S. F., R. Frouin, H. Razaflinpanilo, R. C. J. Somerville, and S. C. Piper, North African savanna fires and atmospheric carbon dioxide, J. Geophys. Res., 99, 8321-8334, 1994.
48. Ignatov, A. M., L. L. Stowe, S. M. Sakerin, and G. K. Korotaev, Validation of the NOAA/NESDIS satellite aerosol product over the North Atlantic in 1989, J. Geophys. Res., 100, 5123-5132, 1995.
49. Jennings, S. G., C. D. O'Dowd, T. C. O'Connor, and F. M. McGovern, Physical characteristics of the ambient aerosols at Mace Head, Atmos. Environ., 25A, 557-562, 1991.
50. Karl, T. R., R. W. Knight, G. Kukla, and J. Gavin, Evidence for radiative effects of anthropogenic sulfate aerosols in the observed climate record, in Aerosol Forcing of Climate, Environmental Sciences Research Report 17, edited by R. Charlson and J. Heintzenberg, pp. 363-382, John Wiley, U.K., 1995.
51. Karyampudi, V. M., and T. N. Carlson, Analysis and numerical simulations of the Saharan air layer and its effects on easterly wave disturbances, J. Atmos. Sci., 45, 3102-3136, 1988.
52. y) J. Geophys. Res., 98, 7165-7180, 1993.
53. Kaufman, Y. J., Remote sensing of direct and indirect aerosol forcing, in Aerosol Forcing of Climate Environmental Sciences Research Report 17, edited by R. Charlson and J. Heintzenberg, pp. 297-332, John Wiley, U.K., 1995.
54. Kaufman, Y. J., R. S. Fraser, and R. A. Ferrare, Satellite measurements of large-scale air pollution: Methods, J. Geophys. Res., 95, 9895-9909, 1990.
55. Kiehl, J. T., and B. P. Briegleb, The relative role of sulfate aerosols and greenhouse gases in climate forcing, Science, 260, 311-314, 1993.
56. King, M. D., Y. J. Kaufman, W. P Menzel, and D. Tanre, Determination of cloud, aerosol and water vapor properties from Moderate Resolution Imaging Spectrometer (MODIS), IEEE Trans. Geosci. Remote Sens., 30, 2-27, 1992.
57. Koepke, P., Effective reflectance of oceanic whitecaps, Appl. Opt., 23, 1816-1824, 1984.
58. Koepke, P., and H. Quenzel, Turbidity of the atmosphere determined from satellite: Calculation of optimum viewing geometry, J. Geophys. Res., 84, 7847-7856, 1979.
59. Lacis, A. A., and M. I. Mishchenko, Climate forcing, climate sensitivity, and climate response: A radiative modeling perspective on atmospheric aerosols, in Dahlem Workshop on Aerosol Forcing of Climate, Environmental Sciences an Research Report 17, pp. 11-42, edited by R. J. Charlson and J. Heintzenberg, John Wiley, U.K., 1995.
60. Lee, G., J. T. Merrill, and B. J. Huebert, Variation of free tropospheric total nitrate at Mauna Loa Observatory, Hawaii, J. Geophys. Res., 99, 12,821-12,831, 1994.
61. Levine J. S., Global Biomass Burning, pp. 47-52, MIT Press, Cambridge, Mass., 1991.
62. Levy, H., and W. J. Moxim, Simulated global distribution and deposition of reactive nitrogen emitted by fossil fuel consumption, Tellus, Ser. B., 41, 256-271, 1989.
63. Li, X., H. Maring, D. Savoie, K. Voss, and J. M. Prospero, Dominance of mineral dust in aerosol light scattering in the North Atlantic trade winds, Nature, 380, 416-419, 1996.
64. Littmann, T., Dust storm frequency in Asia: Climatic control and variability, Int. J. Climatol., 11, 393-412, 1991.
65. Long, C. S., and L. L. Stowe, Using the NOAA/AVHRR to study stratospheric aerosol optical thickness following the Mt. Pinatubo eruption, Geophys. Res. Lett., 21(20), 2215-2218, 1994.
66. MacDonald, W. F., Atlas of Climatic Charts of the Oceans, 60 pp., Weather Bur., Dep. of Agric., Washington, D. C., 1938.
67. Malingreau J. P., G. Stephens, and L. Fellows, Remote sensing of forest fires: Kalimantan and North Borneo in 1982-83, Ambio, 14, 314, 1985.
68. Malm, W. C., J. F. Sisler, D. Huffman, R. A. Eldred, and T. A. Cahill, Spatial and seasonal trends in particle concentration and optical extinction in the United States, J. Geophys. Res., 99, 1347-1370, 1994.
69. McArdle, N. C., and P. S. Liss, Isotopes and atmospheric sulphur, Atmos. Environ., 29, 2553-2556, 1995.
70. McClain, P., Global sea surface temperature and cloud clearing for aerosol optical depth estimates, Int. J. Remote Sens., 10, 763-769, 1989.
71. Merrill, J. T., Atmospheric long-range transport to the Pacific Ocean, in Chemical Oceanography, vol. 10, edited by J. P. Riley, R. Chester, and R. A. Duce, pp. 15-50., Academic, San Diego, Calif., 1989.
72. Middleton, N. J., Dust storms in the Mongolian People's Republic, J. Arid Environ., 20, 287-297, 1991.
73. Mishchenko, M. I., and L. D. Travis, Nonsphericity of dust-like tropospheric aerosols: Implications for aerosol remote sensing and climate modeling, Geophvs. Res. Let., 22, 1077-1080, 1995.
74. Monahan, E. C., and I. O'Muircheartaigh, Optimal power law description of oceanic whitecap coverage dependence on wind speed, J. Phys. Oceanogr., 10, 2094-2099, 1980.
75. Moody, J. L., S. J. Oltmans, H. Levy II, and J. T. Merrill, Transport climatology of tropospheric ozone: Bermuda, 1988-1991 J. Geophys. Res., 100, 7179-7194, 1995.
76. Morales, C., (Ed.), Saharan Dust: Mobilization, Transport, Deposition, John Wiley, New York, 1979.
77. Morel, A., In-water and remote measurements of ocean color Boundary Layer Meteorol., 18, 177-201, 1980.
78. Mukai, H., Y. Ambe, and K. Shibata, Long-term variation of chemical composition of atmospheric aerosol of the Oki Islands in the Sea of Japan, Atmos. Environ., 24(A), 1379-1390, 1990.
79. O'Dowd, C. D., M. H. Smith, and S. G. Jennings, Submicron particle, radon, and soot carbon characteristics over the Northeast Atlantic, J. Geophys. Res., 98, 1123-1135, 1993.
80. Olson, J. S., J. A. Watts, and L. J. Allison, Major World Ecosystem Complexes Ranked by Carbon in Live Vegetation: A Database NDP017, Carbon Dioxide Info. Analy. Cent., Oak Ridge Nat. Lab., Oak Ridge, Tenn., 1985.
81. Ott, S.-T., A. Ott, D. W. Martin, and J. A. Young, Analysis of a trans-Atlantic Saharan dust outbreak based on satellite and GATE data, Mon. Weather Rev., 119, 1832-1850, 1991.
82. Penner, J. E., Carbonaceous aerosols influencing atmospheric radiation: Black and organic carbon, in Aerosol Forcing of Climate, Environmental Sciences Research Report 17, edited by R. Charlson and J. Heintzenberg, pp. 91-108, John Wiley, U.K., 1995.
83. Penner, J. E., R. J. Charlson, J. M. Hales, N. Laulainen, R. Leifer, T. Novakov, J. Ogren, L. F. Radke, S. E. Schwartz, and L. Travis. Quantifying and minimizing uncertainty of climate forcing by anthropogenic aerosols, Bull. Am. Meteorol. Soc., 75, 375-400, 1994.
84. Pham, M., J.-F. M. Muller, G. P. Brasseur, C. Granier, and G. M. Megie, A three-dimensional study of the tropospheric sulfur cycle, J. Geophys. Res., 100, 26,061-26,092, 1995.
85. Prodi, F., G. Santachiara, and F. Olioski, Characterization of aerosols in marine environments (Mediterranean, Red Sea, and Indian Ocean), J. Geophys. Res., 88, 10,957-10,968, 1983.
86. Prospero, J. M., Aeolian transport to the World Ocean, in The Sea, vol. 7, The Oceanic Lithosphere, edited by C. Emiliani, pp. 801-974, Wiley Intersci., New York, 1981.
87. Prospero, J. M., Records of past climates in deep sea sediments, Nature, 315, 279-280, 1985.
88. Prospero, J. M., The atmospheric transport of particles to the ocean, in Particle Flux in the Ocean, SCOPE 57, edited by V. Ittekkot, P. Schäfer, S. Honjo, and P. J. Depetris, pp. 19-52, John Wiley, New York, 1996a.
89. Prospero, J. M., Saharan dust transport over the North Atlantic Ocean and Mediterranean, in, The Impact of African Dust Across the Mediterranean, edited by S. Guerzoni and R. Chester, pp. 123-132, Kluwer Academic., Norwell, Mass., 1996b.
90. Prospero, J. M., and T. N. Carlson, Vertical and areal distribution of Saharan dust over the western equatorial North Atlantic Ocean, J. Geophys. Res., 77, 5255-5265, 1972.
91. Prospero, J. M., and R. T. Nees, Impact of the North African drought and El Niño on mineral dust in the Barbados trade wind, Nature, 320, 735-738, 1986.
92. Prospero, J. M., D. L. Savoie, T. N. Carlson, and R. T. Nees, Monitoring Saharan aerosol transport by means of atmospheric turbidity measurements, in Saharan Dust: Mobilization, Transport, Deposition, edited by C. Morales, pp. 171-186, John Wiley, San Diego, Calif., 1979.
93. Prospero, J. M., R. A. Glaccum, and R. T. Nees, Atmospheric transport of soil dust from Africa to South America, Nature, 289, 570-572, 1981.
94. Prospero, J. M., R. T. Nees, and M. Uematsu, Deposition rate of particulate and dissolved aluminum derived from Saharan dust in precipitation at Miami, Florida, J. Geophys. Res., 92, 14,723-14,731, 1987.
95. Prospero, J. M., M. Uematsu, and D. L. Savoie, Mineral aerosol transport to the Pacific Ocean, in Chemical Oceanography, vol. 10, edited by J. P. Riley, R. Chester, and R. A. Duce, pp. 188-218, Academic, San Diego, Calif., 1989.
96. Prospero, J. M., D. L. Savoie, R. Arimoto, and F. Huang, Long-term trends in African mineral dust concentrations over the western North Atlantic: Relationship to North African rainfall, EoS Trans. AGU, 74(43), Fall Meet. Suppl., 146, 1993.
97. Prospero, J. M., R. Schmitt, E. Cuevas, D. L. Savoie, W. C. Graustein, K. K. Turekian, A. Volz-Thomas, A. D. Diaz, S. J. Oltmans, and H. Levy II, Temporal variability of summertime ozone and aerosols in the free troposphere over the eastern North Atlantic, Geophys. Res. Lett., 22(21), 2925-2928, 1995a.
98. Prospero, J. M., D. L. Savoie, R. Arimoto, H. Olafsson, and H. Hjartarson, Sources of aerosol nitrate and non-sea-salt (nss) sulfate in the Iceland region, Sci. Total Environ., 160/161, 181-191, 1995b.
99. Pye, K , Aeolian Dust and Dust Deposits, 334 pp., Academic, San Diego, Calif, 1987.
100. Pye, K., Processes of fine particle formation, dust source regions, and climatic changes, in Paleoclimatology and Paleometeorology: Modem and Past Patterns of Global Atmospheric Transport, edited by M. Leinen and M. Sarnthein, pp. 3-30, Kluwer Academic., Norwell, Mass., 1989.
101. Saltzman, E. S., D. L. Savoie, J. M. Prospero, R. G. Zika, and B. Mosher, Elevated atmospheric sulfur levels off the Peruvian coast, J. Geophys. Res., 91, 7913-7918, 1986.
102. Savoie, D. L., and J. M. Prospero, Particle size distribution of nitrate and sulfate in the marine atmosphere, Geophys. Res. Lett., 9, 1207-1210, 1982.
103. Savoie, D. L., J. M. Prospero, and R. T. Nees, Nitrate, non-sea-salt sulfate, and mineral aerosol over the northwestern Indian Ocean, J. Geophys. Res., 92, 933-942, 1987.
104. Savoie, D. L., J. M. Prospero, and E. S. Saltzman, Non-sea-salt sulfate and nitrate in trade wind aerosols at Barbados: Evidence for long-range transport, J. Geophys. Res., 94, 5069-5080, 1989a.
105. Savoie, D. L., J. M. Prospero, and E. S. Saltzman, Nitrate, non-seasalt sulfate and methanesulfonate over the Pacific Ocean, in Chemical Oceanography, vol. 10, edited by J. P. Riley, R. Chester, and R. A. Duce, pp. 219-250, Academic, San Diego, Calif., 1989b.
106. Savoie, D. L., J. M. Prospero, S. J. Oltmans, W. C. Graustein, K. K. Turekian, J. T. Merrill, and H. Levy II, Sources of nitrate and ozone in the marine boundary layer of the tropical North Atlantic, J. Geophys. Res., 97, 11,575-11,589, 1992.
107. Savoie, D. L., J. M. Prospero, R. J. Larsen, F. Huang, M. A. Izaguirre, T. Huang, T. H. Snowdon, L. Custals, and C. G. Sanderson, Nitrogen and sulfur species in Antarctic aerosols at Mawson, Palmer Station, and Marsh (King George Island), J. Atmos. Chem., 17, 95-122, 1993.
108. Scott, W. D., B. W. Forgan, and J. M. Prospero, Atmospheric turbidity measurements at Broome in western Australia, 1979-1984. J. R. Soc. West. Austr., 75, 111-118, 1992.
109. Shaw, G. E., Aerosols as climate regulators: A climate-biosphere linkage?, Atmos. Environ., 21, 985-986, 1987.
110. Simkin, T., and L. Siebert, Volcanoes of the World Atlas, Smithson. Global Volcanism Network, Washington, D. C., 1995.
111. Sirocko, F., and M. Sarnthein, Wind-borne deposits in the Northwestern Indian Ocean: Record of Holocene sediments versus modern satellite data, in Paleoclimatology and Paleometeorology: Modern and Past Patterns of Global Atmospheric Transport, edited by M. Leinen and M. Sarnthein, pp. 401-433, Kluwer Academic., Norwell, Mass., 1989.
112. Sokolik, I. N., and O. B. Toon, Direct radiative forcing by anthropogenic airborne mineral aerosols, Nature 381, 681-683, 1996.
113. Stowe, L. L., R. Hitzenberger, and A. Deepak, Experts meeting on space observations of tropospheric aerosols and complementary measurements, WCRP-48, WMO/TD-389, World Meteorol. Organ., Geneva, 1990.
114. Stowe, L. L., R. M. Cavoy, and P. P. Pelliguino, Monitoring the Mt. Pinatubo aerosol layer with NOAA/II AVHRR data, Geophys. Res. Lett, 19, 159-162, 1992.
115. Stowe, L. L., A. A. Ignatov, and R. R. Singh, Development, validation and potential enhancements to the second generation operational aerosol product at NOAA/NESDIS, J. Geophys, Res., this issue.
116. Swap, R., M. Garstang, S. Greco, R. Talbot, and P. Kallberg, Saharan dust in the Amazon basin, Tellus, Ser. B., 44, 133-149, 1992.
117. Takayama, Y., and T. Takashima, Aerosol optical thickness of yellow sand over the Yellow Sea derived from NOAA satellite data, Atmos. Environ., 20, 631-638, 1986.
118. Talbot, R. W., R. C. Harriss, E. V. Browe, G. L. Gregory, D. I. Sebacher, and S. M. Beck, Distribution and geochemistry of aerosols in the tropical North Atlantic troposphere: Relationship to Saharan dust, J. Geophys. Res., 91, 5173-5182, 1986.
119. Taylor, K. E., and J. E. Penner, Response of the climate system to atmospheric aerosols and greenhouse gases, Nature, 369, 734-737, 1994.
120. Tegen, I., and I. Fung, Modeling of mineral dust in the atmosphere: Sources, transport, and optical thickness, J. Geophys. Res., 99, 22,897-22,914, 1994.
121. Tegen, I., and I. Fung, Contribution to the atmospheric mineral aerosol load from land surface modification, J. Geophys. Res., 100, 18,707-18,726, 1995.
122. Tegen, I., A. A. Lacis, and I. Fung, The influence of mineral aerosols from disturbed soils on the global radiation budget, Nature, 380, 419-422, 1996.
123. Trijonis, J., R. C. Charlson, R. Husar, W. Malrn, M. Pitchford, and W. White, Visibility: Existing and historical conditions - Causes and effects, in State-of-Science Technology Report 24, Natl. Acid Precip. Assess., Washington, D. C., 1990.
124. Tsunogai, S., T. Suzuki, T. Kurata, and M. Uematsu, Seasonal and areal variation of continental aerosol in the surface air over the western North Pacific region, J. Oceanogr. Soc. Jpn., 41, 427-434, 1985.
125. University Corporation for Atmospheric Research (UCAR), The NOAA-NASA Pathfinder Program, 22 pp., Boulder, Colo., 1994.
126. Uematsu, M., T. Sugita, V. V. Anikiev, and A. N. Medvedev, Large-scale transport of pollution aerosol over the east coast of Asia, Geophys. Res. Lett., 19, 2219-2221, 1992.
127. Villevalde, Y. V., A. V. Smirnov, N. T. O'Neill, S. P. Smyshlyaev, and V. V. Yakovlev, Measurement of aerosol optical depth in the Pacific Ocean and the North Atlantic, J. Geophys. Res., 99, 20,983-20,988, 1994.
128. Westphal, D. L., O. B. Toon, and T. N. Carlson, A two-dimensional numerical investigation of the dynamics and microphysics of Saharan dust storms, J. Geophys. Res., 92, 3027-3049, 1987.
129. Westphal, D. L., O. B. Toon, and T. N. Carlson, A case study of mobilization and transport of Saharan dust, J. Atmos. Sci., 45, 2145-2175, 1988.
130. Williams, M. A. J., and R. C. Balling, Jr., Interactions of Desertification and Climate, 270 pp., World Meteorol. Organ., United Nations Environ. Programme, Arnold, London, 1996.
131. Wylie, D. P., W. P. Menzel, H. M. Woolf, and K. I. Strabala, Four years of global cirrus cloud statistics using HIRS, J. Clim., 7(12), 1972-1986, 1994.