<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Moore, J. K.</style></author><author><style face="normal" font="default" size="100%">Doney, S. C.</style></author><author><style face="normal" font="default" size="100%">Lindsay, K.</style></author><author><style face="normal" font="default" size="100%">Mahowald, N. M.</style></author><author><style face="normal" font="default" size="100%">Michaels, A. F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nitrogen fixation amplifies the ocean biogeochemical response to decadal timescale variations in mineral dust deposition</style></title><secondary-title><style face="normal" font="default" size="100%">Tellus Series B-Chemical and Physical Meteorology</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Tellus Ser. B-Chem. Phys. Meteorol.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">carbon-cycle</style></keyword><keyword><style  face="normal" font="default" size="100%">climate-change</style></keyword><keyword><style  face="normal" font="default" size="100%">ecosystem model</style></keyword><keyword><style  face="normal" font="default" size="100%">future</style></keyword><keyword><style  face="normal" font="default" size="100%">iron fertilization</style></keyword><keyword><style  face="normal" font="default" size="100%">last glacial maximum</style></keyword><keyword><style  face="normal" font="default" size="100%">model version-3 ccsm3</style></keyword><keyword><style  face="normal" font="default" size="100%">pacific</style></keyword><keyword><style  face="normal" font="default" size="100%">phytoplankton bloom</style></keyword><keyword><style  face="normal" font="default" size="100%">southern-ocean</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2006</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">pub/681</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">5</style></number><volume><style face="normal" font="default" size="100%">58</style></volume><pages><style face="normal" font="default" size="100%">560-572</style></pages><isbn><style face="normal" font="default" size="100%">0280-6509</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;A global ocean biogeochemical model is used to quantify the sensitivity of marine biogeochemistry and air-sea CO2 exchange to variations in dust deposition over decadal timescales. Estimates of dust deposition generated under four climate states provide a large range in total deposition with spatially realistic patterns; transient ocean model experiments are conducted by applying a step-function change in deposition from a current climate control. Relative to current conditions, higher dust deposition increases diatom and export production, nitrogen fixation and oceanic net CO2 uptake from the atmosphere, while reduced dust deposition has the opposite effects. Over timescales less than a decade, dust modulation of marine productivity and export is dominated by direct effects in high-nutrient, low-chlorophyll regions, where iron is the primary limiting nutrient. On longer timescales, an indirect nitrogen fixation pathway has increased importance, significantly amplifying the ocean biogeochemical response. Because dust iron input decouples carbon cycling from subsurface macronutrient supply, the ratio of the change in net ocean CO2 uptake to change in export flux is large, 0.45-0.6. Decreasing dust deposition and reduced oceanic CO2 uptake over the next century could provide a positive feedback to global warming, distinct from feedbacks associated with changes in stratification and circulation.&lt;/p&gt;</style></abstract><work-type><style face="normal" font="default" size="100%">Proceedings Paper</style></work-type><accession-num><style face="normal" font="default" size="100%">ISI:000241347500021</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;ISI Document Delivery No.: 095ZTTimes Cited: 31Cited Reference Count: 63Cited References:      ARMSTRONG RA, 2002, DEEP-SEA RES PT II, V49, P219     AUMONT O, 2003, GLOBAL BIOGEOCHEM CY, V17, ARTN 1060     BERMANFRANK I, 2001, LIMNOL OCEANOGR, V46, P1249     BOPP L, 2001, GLOBAL BIOGEOCHEM CY, V15, P81     BOPP L, 2003, PALEOCEANOGRAPHY, V18, ARTN 1046     BOYD PW, 2000, NATURE, V407, P695     BOYD PW, 2002, GEOPHYS RES LETT, V29, ARTN 1806     CHASE Z, 2003, DEEP-SEA RES PT II, V50, P799     COALE KH, 1996, NATURE, V383, P495     COALE KH, 2004, SCIENCE, V304, P408     COLLINS WD, 2006, J CLIMATE, V19, P2122     CONKRIGHT ME, 1998, 14 NAT OC DAT CENT     DEBAAR HJW, 2001, IUPAC BOOK SERIES AN, V7, P123     DEBAAR HJW, 2005, J GEOPHYS RES-OCEANS, V110, ARTN C09S16     DONEY SC, 2004, GLOBAL BIOGEOCHEM CY, V18, ARTN GB3017     DONEY SC, 2006, J CLIMATE, V19, P3033     FALKOWSKI PG, 1997, NATURE, V387, P272     FRIEDLINGSTEIN P, 2003, TELLUS B, V55, P692     FUNG IY, 2000, GLOBAL BIOGEOCHEM CY, V14, P281     FUNG IY, 2005, P NATL ACAD SCI USA, V102, P11201, DOI     10.1073/pnas.0504949102     GALLOWAY JN, 2004, BIOGEOCHEMISTRY, V70, P153     GLIBERT PM, 1994, APPL ENVIRON MICROB, V60, P3996     GRINI A, 2004, J GEOPHYS RES-ATMOS, V109, ARTN D07202     GRUBER N, 2004, OCEAN CARBON CYCLE C, P97     HANSELL DA, 2000, GEOPHYS RES LETT, V27, P1013     HAXELTINE A, 1996, GLOBAL BIOGEOCHEM CY, V10, P693     JICKELLS TD, 2005, SCIENCE, V308, P67     KARL D, 2002, BIOGEOCHEMISTRY, V57, P47     KEY RM, 2004, GLOBAL BIOGEOCHEM CY, V18, ARTN GB4031     KIEHL JT, 2006, J CLIMATE, V19, P2584     KOHFELD KE, 2001, EARTH-SCI REV, V54, P81     KOHFELD KE, 2005, SCIENCE, V308, P74, DOI 10.1126/science.1105375     KUSTKA A, 2002, RES MICROBIOL, V153, P255     KUSTKA A, 2003, J PHYCOL, V39, P12     LARGE WG, 2004, NCARTN460STR     LEQUERE C, 2003, TELLUS B, V55, P647     LEQUERE C, 2005, GLOBAL CHANGE BIOL, V11, P2016, DOI     10.1111/j.1365-2468.2005.01004.x     LUO C, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 4447     MAHAFFEY C, 2005, AM J SCI, V305, P546     MAHOWALD N, 1999, J GEOPHYS RES-ATMOS, V104, P15895     MAHOWALD NM, 2003, GEOPHYS RES LETT, V30, ARTN 1903     MAHOWALD NM, 2004, GEOPHYS RES LETT, V31, ARTN L24105     MAHOWALD NM, 2005, GLOBAL BIOGEOCHEM CY, V19, ARTN GB4025     MAHOWALD NM, 2006, J GEOPHYS RES-ATMOS, V111, ARTN D10202     MARTIN JH, 1987, DEEP-SEA RES, V34, P267     MARTIN JH, 1991, LIMNOL OCEANOGR, V36, P1793     MICHAELS AF, 2001, OCEANOGRAPHY, V14, P68     MOORE JK, 2002, DEEP-SEA RES PT II, V49, P403     MOORE JK, 2002, DEEP-SEA RES PT II, V49, P463     MOORE JK, 2004, GLOBAL BIOGEOCHEM CY, V18, ARTN GB4028     OTTOBLIESNER BL, 2006, J CLIMATE, V19, P2526     PETIT JR, 1990, NATURE, V343, P56     RASCH PJ, 2001, J GEOPHYS RES-ATMOS, V106, P7337     SARMIENTO JL, 1998, NATURE, V393, P245     SARMIENTO JL, 2004, GLOBAL BIOGEOCHEM CY, V18, ARTN GB3003     SARMIENTO JL, 2004, NATURE, V427, P56, DOI 10.1038/nature02127     TEGEN I, 2004, GEOPHYS RES LETT, V31, ARTN L05105     TSUDA A, 2003, SCIENCE, V300, P958     WERNER M, 2002, J GEOPHYS RES-ATMOS, V107, ARTN 4744     YEAGER SG, 2006, J CLIMATE, V19, P2545     ZARATE MA, 2003, QUATERNARY SCI REV, V22, P1987, DOI     10.1016/S0277-3791(03)00165-3     ZENDER CS, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 4416     ZENDER CS, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 4416Moore, J. Keith Doney, Scott C. Lindsay, Keith Mahowald, Natalie Michaels, Anthony F.Blackwell publishingOxford&lt;/p&gt;</style></notes><auth-address><style face="normal" font="default" size="100%">&lt;p&gt;Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA. Woods Hole Oceanog Inst, Dept Marine Chem &amp;amp; Geochem, Woods Hole, MA 02543 USA. Natl Ctr Atmospher Res, Boulder, CO 80307 USA. Univ So Calif, Dept Biol, Los Angeles, CA 90089 USA.Moore, JK, Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA.jkmoore@uci.edu&lt;/p&gt;</style></auth-address></record></records></xml>