Search Results - "Lam, Phoebe J."

Cycling of lithogenic marine particles in the US GEOTRACES North Atlantic transect by Ohnemus, Daniel C., Lam, Phoebe J.

“…In this paper, we present, describe, and model the first size-fractionated (0.8–51µm; >51µm) water-column particulate trace metal results from the US GEOTRACES…”
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Size-fractionated major particle composition and concentrations from the US GEOTRACES North Atlantic Zonal Transect by Lam, Phoebe J., Ohnemus, Daniel C., Auro, Maureen E.

“…The concentration and the major phase composition (particulate organic matter, CaCO3, opal, lithogenic matter, and iron and manganese oxyhydroxides) of marine…”
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Trace Metal Substitution in Marine Phytoplankton by Morel, François M.M, Lam, Phoebe J, Saito, Mak A

“…The sinking of organic matter to the deep ocean leaves extremely low concentrations of major and trace nutrients for photosynthetic organisms at the sunlit…”
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A global ocean inventory of anthropogenic mercury based on water column measurements by Lamborg, Carl H., Hammerschmidt, Chad R., Bowman, Katlin L., Swarr, Gretchen J., Munson, Kathleen M., Ohnemus, Daniel C., Lam, Phoebe J., Heimbürger, Lars-Eric, Rijkenberg, Micha J. A., Saito, Mak A.

“…GEOTRACES sampling of deep water from the Atlantic, Pacific and Southern oceans allows an estimate of the amount (tripled in surface waters) and distribution…”
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Size‐Fractionated Compositions of Marine Suspended Particles in the Western Arctic Ocean: Lateral and Vertical Sources by Xiang, Yang, Lam, Phoebe J.

“…We present full water depth sections of size‐fractionated (1–51 μm; >51 μm) concentrations of suspended particulate matter and major particle phase composition…”
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The continental margin is a key source of iron to the HNLC North Pacific Ocean by Lam, Phoebe J., Bishop, James K. B.

“…Here we show that labile particulate iron and manganese concentrations in the upper 500 m of the Western Subarctic Pacific, an iron‐limited High Nutrient Low…”
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Geographic and Oceanographic Influences on Ferromanganese Crust Composition Along a Pacific Ocean Meridional Transect, 14 N to 14S by Kira Mizell, James R. Hein, Phoebe J. Lam, Anthony A. P. Koppers, Hubert Staudigel

“…Abstract The major controls on the variability of ferromanganese (FeMn) crust composition have been generally described over the past 40 years; however, most…”
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Shallow particulate organic carbon regeneration in the South Pacific Ocean by Pavia, Frank J., Anderson, Robert F., Lam, Phoebe J., Cael, B. B., Vivancos, Sebastian M., Fleisher, Martin Q., Lu, Yanbin, Zhang, Pu, Cheng, Hai, Edwards, R. Lawrence

“…Particulate organic carbon (POC) produced in the surface ocean sinks through the water column and is respired at depth, acting as a primary vector sequestering…”
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Coastal sources, sinks and strong organic complexation of dissolved cobalt within the US North Atlantic GEOTRACES transect GA03 by Noble, Abigail E, Ohnemus, Daniel C, Hawco, Nicholas J, Lam, Phoebe J, Saito, Mak A

“…Cobalt is the scarcest of metallic micronutrients and displays a complex biogeochemical cycle. This study examines the distribution, chemical speciation, and…”
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Dynamic variability of dissolved Pb and Pb isotope composition from the U.S. North Atlantic GEOTRACES transect by Noble, Abigail E., Echegoyen-Sanz, Yolanda, Boyle, Edward A., Ohnemus, Daniel C., Lam, Phoebe J., Kayser, Rick, Reuer, Matt, Wu, Jingfeng, Smethie, William

“…This study presents dissolved Pb concentration and isotopic composition distributions from GEOTRACES GA03, the U.S. North Atlantic Transect. Pb in the ocean is…”
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Coastal ocean and shelf-sea biogeochemical cycling of trace elements and isotopes: lessons learned from GEOTRACES by Charette, Matthew A., Lam, Phoebe J., Lohan, Maeve C., Kwon, Eun Young, Hatje, Vanessa, Jeandel, Catherine, Shiller, Alan M., Cutter, Gregory A., Thomas, Alex, Boyd, Philip W., Homoky, William B., Milne, Angela, Thomas, Helmuth, Andersson, Per S., Porcelli, Don, Tanaka, Takahiro, Geibert, Walter, Dehairs, Frank, Garcia-Orellana, Jordi

“…Continental shelves and shelf seas play a central role in the global carbon cycle. However, their importance with respect to trace element and isotope (TEI)…”
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Basin-scale inputs of cobalt, iron, and manganese from the Benguela-Angola front to the South Atlantic Ocean by Noble, Abigail E., Lamborg, Carl H., Ohnemus, Dan C., Lam, Phoebe J., Goepfert, Tyler J., Measures, Chris I., Frame, Caitlin H., Casciotti, Karen L., DiTullio, Giacomo R., Jennings, Joe, Saito, Mak A.

“…We present full-depth zonal sections of total dissolved cobalt, iron, manganese, and labile cobalt from the South Atlantic Ocean. A basin-scale plume from the…”
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Revisiting Carbon Flux through the Ocean's Twilight Zone by Buesseler, Ken O., Lamborg, Carl H., Boyd, Philip W., Lam, Phoebe J., Trull, Thomas W., Bidigare, Robert R., Bishop, James K. B., Casciotti, Karen L., Dehairs, Frank, Elskens, Marc, Honda, Makio, Karl, David M., Siegel, David A., Silver, Mary W., Steinberg, Deborah K., Valdes, Jim, Van Mooy, Benjamin, Wilson, Stephanie

“…The oceanic biological pump drives sequestration of carbon dioxide in the deep sea via sinking particles. Rapid biological consumption and remineralization of…”
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Small phytoplankton drive high summertime carbon and nutrient export in the Gulf of California and Eastern Tropical North Pacific by Puigcorbé, Viena, Benitez-Nelson, Claudia R., Masqué, Pere, Verdeny, Elisabet, White, Angelicque E., Popp, Brian N., Prahl, Fredrick G., Lam, Phoebe J.

“…Summertime carbon, nitrogen, and biogenic silica export was examined using 234Th:238U disequilibria combined with free floating sediment traps and fine scale…”
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Flux of Particulate Elements in the North Atlantic Ocean Constrained by Multiple Radionuclides by Hayes, Christopher T., Black, Erin E., Anderson, Robert F., Baskaran, Mark, Buesseler, Ken O., Charette, Matthew A., Cheng, Hai, Cochran, J. Kirk, Edwards, R. Lawrence, Fitzgerald, Patrick, Lam, Phoebe J., Lu, Yanbin, Morris, Stephanie O., Ohnemus, Daniel C., Pavia, Frank J., Stewart, Gillian, Tang, Yi

“…Sinking particles strongly regulate the distribution of reactive chemical substances in the ocean, including particulate organic carbon and other elements…”
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Biogeochemical iron budgets of the Southern Ocean south of Australia: Decoupling of iron and nutrient cycles in the subantarctic zone by the summertime supply by Bowie, Andrew R., Lannuzel, Delphine, Remenyi, Tomas A., Wagener, Thibaut, Lam, Phoebe J., Boyd, Philip W., Guieu, Cécile, Townsend, Ashley T., Trull, Thomas W.

“…Climate change is projected to significantly alter the delivery (stratification, boundary currents, aridification of landmasses, glacial melt) of iron to the…”
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Intensity of Th and Pa scavenging partitioned by particle chemistry in the North Atlantic Ocean by Hayes, Christopher T., Anderson, Robert F., Fleisher, Martin Q., Vivancos, Sebastian M., Lam, Phoebe J., Ohnemus, Daniel C., Huang, Kuo-Fang, Robinson, Laura F., Lu, Yanbin, Cheng, Hai, Edwards, R. Lawrence, Moran, S. Bradley

“…The natural radionuclides 231Pa and 230Th are incorporated into the marine sediment record by scavenging, or adsorption to various particle types, via chemical…”
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What can paired measurements of Th isotope activity and particle concentration tell us about particle cycling in the ocean? by Marchal, Olivier, Lam, Phoebe J.

“…The ability of paired measurements of thorium isotope activity and particle concentration to constrain rate constants of sorption reactions and particle…”
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The speciation of marine particulate iron adjacent to active and passive continental margins by Lam, Phoebe J., Ohnemus, Daniel C., Marcus, Matthew A.

“…We use synchrotron-based chemical-species mapping techniques to compare the speciation of suspended (1–51μm) marine particulate iron collected in two open…”
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The oceanographic toolbox for the collection of sinking and suspended marine particles by McDonnell, Andrew M.P., Lam, Phoebe J., Lamborg, Carl H., Buesseler, Ken O., Sanders, Richard, Riley, Jennifer S., Marsay, Chris, Smith, Helen E.K., Sargent, Elizabeth C., Lampitt, Richard S., Bishop, James K.B.

“…•Reviews particle collection techniques with focus on GEOTRACES-relevant methods.•Collection methods for sinking and suspended particles…”
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