Search

Your search keyword '"Pacific warm pool"' showing total 5 results
Start Over Descriptor "Pacific warm pool" Topic 13. climate action
5 results on '"Pacific warm pool"'

1. Unraveling glacial hydroclimate in the Indo‐Pacific Warm Pool: perspectives from water isotopes

Author

Jessica E. Tierney, Grace Windler, Christopher J. Poulsen, and Jiang Zhu

Subjects
Atmospheric Science, 010504 meteorology & atmospheric sciences, Pleistocene, water isotopes, Indo&#8208, proxy&#8208, Paleontology, 010502 geochemistry & geophysics, Oceanography, leaf wax, 01 natural sciences, 13. Climate action, model comparison, Environmental science, Pacific Warm Pool, Glacial period, Indo-Pacific, 0105 earth and related environmental sciences
Abstract

The Indo‐Pacific Warm Pool (IPWP) is home to the warmest sea surface temperatures in the world oceans, favoring strong tropospheric convection and heavy rainfall. The mechanisms controlling long‐term change in the region’s hydroclimate are still uncertain. Here, we present a 450,000‐year record of precipitation δD from southern Sumatra that records a consistent pattern of glacial isotopic enrichment and interglacial depletion. We synthesize existing paleo‐indicators of precipitation δD and δ18O in the IPWP and compare results with water isotope‐enabled climate simulations of the Last Glacial Maximum (LGM). The simulations show glacial isotopic enrichment over the eastern Indian Ocean extending into the southern IPWP and isotopic depletion over southeast Asia, the west Pacific, and Australia. The pattern of simulated LGM isotopic change agrees generally well with our proxy synthesis. We conclude that reorganization of regional circulation under glacial conditions controls precipitation isotope variability in the IPWP: low‐level tropospheric convergence dominates the signal in the north/east, whereas divergence controls the response in the south/west. Additional sensitivity simulations suggest that the LGM ice sheets and the associated lowering in sea level, rather than decreased greenhouse gases, are responsible for the distinctive spatial pattern in glacial changes of precipitation isotopes and hydroclimate across the IPWP.

Published
2020

2. Surpact: A SMOS Surface Wave Rider for Air-Sea Interaction

Author

Jacqueline Boutin, Joaquín Salvador, Simon Morisset, Gilles Reverdin, Antonio Lourenço, Nicolas Martin, Jordi Font, Denis Bourras, Christophe Caudoux, Échanges dans la couche de surface : des pôles aux tropiques (SURF), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), ESTER - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Développement Instrumental et Techniques Marines (DITM), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] (ICM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636))

Subjects
Salinity measurements, 010504 meteorology & atmospheric sciences, Meteorology, Temperature salinity diagrams, SSMIS, Wind stress, Sea state, Oceanography, 7. Clean energy, 01 natural sciences, Wind speed, lcsh:Oceanography, Wind shear, lcsh:GC1-1581, wave rider, Pacific warm pool, 0105 earth and related environmental sciences, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], 010505 oceanography, drifter, Mooring, Surpact, Drifter, 13. Climate action, Environmental science, sea state, atmospheric sea level pressure
Abstract

10 pages, 4 figures, A new small wave rider called Surpact was developed for air-sea investigations. It was designed to attach to a drifter or a mooring and to float upon the surface waves in order to measure sea state and atmospheric sea level pressure as well as temperature and salinity at a small fixed depth from the surface. Wind speed is derived from Surpact sea state measurements, and the data are calibrated with colocated Special Sensor Microwave Imager Sounder (SSMIS) wind retrievals during a four-month deployment in the North Atlantic subtropics. Individual 15-minute wind estimates present a root mean square difference on the order of 15% with the SSMIS wind retrievals for wind speeds less than 12 m s-1. The wind retrievals might lag the actual wind changes for moderate to strong winds by an hour. This article discusses the accuracy of these wind retrievals based on in situ data collected during the Strasse cruise in August and September 2012. Temperature and salinity data are also examined. The authors find, under some sunny conditions, radiative warming of the temperature probe reduces the accuracy of some of the daytime temperature data and also affects corresponding salinity estimates. Nonetheless, small realistic daily cycles of near-surface salinity (0.01 psu amplitude) were observed. Also, examples of wind time series collected during salinity drops caused by rainfall during late 2012 in the North Atlantic subtropics indicate no intensification of wind during these rain events, This effort is part of ESA SMOS cal-val projects, and is supported nationally in France by CNES/TOSCA with the Gloscal project, and in Spain at ICM/CSIC by the Spanish national R+D plan (project AYA2010-22062-C05)

Published
2013
Full Text
View/download PDF

3. Satellite and In Situ Salinity: Understanding Near-Surface Stratification and Subfootprint Variability

Author

Ludovic Brucker, Andrea Santos-Garcia, Tong Lee, Jacqueline Boutin, Alexander Soloviev, Emmanuel P. Dinnat, Brian Ward, Wenqing Tang, Nicolas Reul, William E. Asher, Nadya T. Vinogradova, Nicolas Kolodziejczyk, Julian Schanze, Kyla Drushka, Jessica Anderson, Thomas Meissner, Yi Chao, Christophe Maes, Thierry Delcroix, W.L. Jones, R. Drucker, Lisan Yu, Gilles Reverdin, Interactions et Processus au sein de la couche de Surface Océanique (IPSO), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), UCLA Joint Institute for Regional Earth System Science and Engineering (JIFRESSE), University of California [Los Angeles] (UCLA), University of California-University of California-NASA, Remote Sensing Solutions, University of Washington [Seattle], Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), School of Oceanography [Seattle], Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Ifremer, Centre de Toulon, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Earth and Space Research Institute [Seattle] (ESR), Nova Southeastern University (NSU), Woods Hole Oceanographic Institution (WHOI), Universities Space Research Association (USRA), GSFC Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center (GSFC), Electrical and Computer Engineering Department [Orlando], University of Central Florida [Orlando] (UCF), Laboratoire de physique des océans (LPO), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), Remote Sensing Systems [Santa Rosa] (RSS), Atmospheric and Environmental Research, Inc. (AER), National University of Ireland [Galway] (NUI Galway), CNES, Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), University of California (UC)-University of California (UC)-NASA, Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)

Subjects
Atmospheric Science, 010504 meteorology & atmospheric sciences, 0211 other engineering and technologies, Mesoscale meteorology, Stratification (water), 02 engineering and technology, [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology, Atmospheric sciences, 01 natural sciences, western equatorial pacific, barrier layer, tropical oceans, north-atlantic, ocean salinity, 14. Life underwater, Water cycle, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography, 021101 geological & geomatics engineering, 0105 earth and related environmental sciences, Remote sensing, Radiometer, boundary-layer, pacific warm pool, Salinity, Ocean dynamics, band radiometer/scatterometer observations, 13. Climate action, polar-regions, air-sea interaction, Environmental science, Satellite, Microwave
Abstract

Remote sensing of salinity using satellite-mounted microwave radiometers provides new perspectives for studying ocean dynamics and the global hydrological cycle. Calibration and validation of these measurements is challenging because satellite and in situ methods measure salinity differently. Microwave radiometers measure the salinity in the top few centimeters of the ocean, whereas most in situ observations are reported below a depth of a few meters. Additionally, satellites measure salinity as a spatial average over an area of about 100 × 100 km2. In contrast, in situ sensors provide pointwise measurements at the location of the sensor. Thus, the presence of vertical gradients in, and horizontal variability of, sea surface salinity complicates comparison of satellite and in situ measurements. This paper synthesizes present knowledge of the magnitude and the processes that contribute to the formation and evolution of vertical and horizontal variability in near-surface salinity. Rainfall, freshwater plumes, and evaporation can generate vertical gradients of salinity, and in some cases these gradients can be large enough to affect validation of satellite measurements. Similarly, mesoscale to submesoscale processes can lead to horizontal variability that can also affect comparisons of satellite data to in situ data. Comparisons between satellite and in situ salinity measurements must take into account both vertical stratification and horizontal variability.

Published
2016
Full Text
View/download PDF

4. A one-dimensional modeling study of the diurnal cycle in the equatorial Atlantic at the PIRATA buoys during the EGEE-3 campaign

Author

Rebecca Hummels, Malick Wade, Marcus Dengler, Yves duPenhoat, Guy Caniaux, Hervé Giordani, Echanges Côte-Large (ECOLA), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Convection, ATLANTIC, Buoyancy, 010504 meteorology & atmospheric sciences, LAYER HEAT-BUDGET, Mixed layer, TROPICAL, Wind stress, cold tongue, engineering.material, Oceanography, 01 natural sciences, PACIFIC WARM POOL, TURBULENCE MARINE, Diurnal cycle, PIRATA buoys, 14. Life underwater, WIND STRESS, 0105 earth and related environmental sciences, TEMPERATURE DE SURFACE, Equatorial Atlantic, Buoy, 010505 oceanography, Oceanic mixed-layer processes, COURANT DE CONVECTION, UPPER OCEAN, Western Hemisphere Warm Pool, One-dimensional model, Turbulence, Sea surface temperature, CIRCULATION OCEANIQUE, 13. Climate action, Climatology, FACTEUR CLIMATIQUE, SEA-SURFACE TEMPERATURE, engineering, CYCLE DIURNE, Environmental science, SHEAR-FLOW, INTRASEASONAL VARIABILITY, ENERGIE CINETIQUE, VARIATION JOURNALIERE, MIXED-LAYER, KINETIC-ENERGY
Abstract

ISI Document Delivery No.: 708HP Times Cited: 8 Cited Reference Count: 77 Cited References: ADAMEC D, 1978, J PHYS OCEANOGR, V8, P1050, DOI 10.1175/1520-0485(1978)0082.0.CO;2 ANDERSON RJ, 1993, J PHYS OCEANOGR, V23, P2153, DOI 10.1175/1520-0485(1993)0232.0.CO;2 Bellanger H., 2007, THESIS ECOLE POLYTEC Bernie DJ, 2005, J CLIMATE, V18, P1190, DOI 10.1175/JCLI3319.1 Bernie DJ, 2007, CLIM DYNAM, V29, P575, DOI 10.1007/s00382-007-0249-6 Bernie DJ, 2008, CLIM DYNAM, V31, P909, DOI 10.1007/s00382-008-0429-z BOUGEAULT P, 1989, MON WEATHER REV, V117, P1872, DOI 10.1175/1520-0493(1989)1172.0.CO;2 Bourles B, 2008, B AM METEOROL SOC, V89, P1111, DOI 10.1175/2008BAMS2462.1 Bourles B, 2002, GEOPHYS RES LETT, V29, DOI 10.1029/2002GL015098 Bourles B, 1999, J GEOPHYS RES-OCEANS, V104, P21151, DOI 10.1029/1999JC900058 Bourles B., 2007, CLIVAR NEWSLETTER EX, V41, P7 Bourras D, 2009, J GEOPHYS RES-OCEANS, V114, DOI 10.1029/2008JC004951 Bunge L, 2007, J GEOPHYS RES-OCEANS, V112, DOI 10.1029/2006JC003704 Caniaux G, 1998, J GEOPHYS RES-OCEANS, V103, P25081, DOI 10.1029/98JC00452 CANIAUX G, 2010, JGR UNPUB Carton JA, 1997, J GEOPHYS RES-OCEANS, V102, P27813, DOI 10.1029/97JC02197 Chen SS, 1997, Q J ROY METEOR SOC, V123, P357, DOI 10.1002/qj.49712353806 Clayson CA, 1999, J PHYS OCEANOGR, V29, P2146, DOI 10.1175/1520-0485(1999)0292.0.CO;2 Clayson CA, 2002, J CLIMATE, V15, P1805, DOI 10.1175/1520-0442(2002)0152.0.CO;2 CRAWFORD WR, 1979, DEEP SEA RES 2, V6, P285 Cronin MF, 1997, J GEOPHYS RES-OCEANS, V102, P8533, DOI 10.1029/97JC00020 Cronin MF, 2009, J PHYS OCEANOGR, V39, P1200, DOI 10.1175/2008JPO4064.1 Dai A, 2004, J CLIMATE, V17, P930, DOI 10.1175/1520-0442(2004)0172.0.CO;2 Danabasoglu G, 2006, J CLIMATE, V19, P2347, DOI 10.1175/JCLI3739.1 DeCosmo J, 1996, J GEOPHYS RES-OCEANS, V101, P12001, DOI 10.1029/95JC03796 DENGLER M, 2010, GEOPHYS RES IN PRESS DOURADO MS, 2004, REV BRASILIERIA METE, V19, P217 Fairall CW, 1996, J GEOPHYS RES-OCEANS, V101, P1295, DOI 10.1029/95JC03190 Fairall CW, 2003, J CLIMATE, V16, P571, DOI 10.1175/1520-0442(2003)0162.0.CO;2 Foltz GR, 2003, J GEOPHYS RES-OCEANS, V108, DOI 10.1029/2002JC001584 GASPAR P, 1990, J GEOPHYS RES-OCEANS, V95, P16179, DOI 10.1029/JC095iC09p16179 GIORDANI H, 2010, JGR UNPUB GREGG MC, 1985, NATURE, V318, P140, DOI 10.1038/318140a0 HEBERT D, 1991, J PHYS OCEANOGR, V21, P1690, DOI 10.1175/1520-0485(1991)0212.0.CO;2 Hormann V, 2007, J GEOPHYS RES-OCEANS, V112, DOI 10.1029/2006JC003931 JANICOT A, 2008, ANN GEOPHYS, V26, P2569 Jerlov NG, 1968, OPTICAL OCEANOGRAPHY Josse P., 1999, THESIS U P SABATIER KANTHA LH, 1994, J GEOPHYS RES-OCEANS, V99, P25235, DOI 10.1029/94JC02257 Kolmogorov A.N., 1942, IZV AN SSSR FIZ, V1-2, P56 Kolodziejczyk N, 2009, J GEOPHYS RES-OCEANS, V114, DOI 10.1029/2008JC004976 LARGE WG, 1994, REV GEOPHYS, V32, P363, DOI 10.1029/94RG01872 LEDUCLEBALLEUR M, 2010, QJRMS UNPUB Lefevre N, 2008, J GEOPHYS RES-OCEANS, V113, DOI 10.1029/2007JC004146 Marin F, 2009, J PHYS OCEANOGR, V39, P1416, DOI 10.1175/2008JPO4030.1 MCCREARY J, 1984, J MAR RES, V42, P81 Merle J., 1980, DEEP SEA RES S2, V26, P77 Mignot J, 2007, J GEOPHYS RES-OCEANS, V112, DOI 10.1029/2006JC003954 MOORE DW, 1978, GEOPHYS RES LETT, V5, P311 MOUM JN, 1985, SCIENCE, V230, P315, DOI 10.1126/science.230.4723.315 MOUM JN, 1992, J PHYS OCEANOGR, V22, P1330, DOI 10.1175/1520-0485(1992)0222.0.CO;2 Pailler K, 1999, GEOPHYS RES LETT, V26, P2069, DOI 10.1029/1999GL900492 PAULSON CA, 1977, J PHYS OCEANOGR, V7, P952, DOI 10.1175/1520-0485(1977)0072.0.CO;2 Persson POG, 2005, Q J ROY METEOR SOC, V131, P877, DOI [10.1256/qj.03.181, 10.1256/jq.03.181] Peter AC, 2006, J GEOPHYS RES-OCEANS, V111, DOI 10.1029/2005JC003157 Philander S., 1990, NINO NINA SO OSCILLA PHILANDER SGH, 1986, J GEOPHYS RES-OCEANS, V91, P14192, DOI 10.1029/JC091iC12p14192 PICAUT J, 1983, J PHYS OCEANOGR, V13, P18, DOI 10.1175/1520-0485(1983)0132.0.CO;2 Prandke H, 1998, AQUAT SCI, V60, P191, DOI 10.1007/s000270050036 Provost C, 2006, ADV SPACE RES, V37, P823, DOI 10.1016/j.asr.2005.06.018 Redelsperger JL, 2006, B AM METEOROL SOC, V87, P1739, DOI 10.1175/BAMS-87-12-1739 Schmitt RW, 2005, SCIENCE, V308, P685, DOI 10.1126/science.1108678 SCHUDLICH RR, 1992, J GEOPHYS RES-OCEANS, V97, P5409, DOI 10.1029/91JC01918 Shinoda T, 2005, J CLIMATE, V18, P2628, DOI 10.1175/JCLI3432.1 Shinoda T, 1998, J CLIMATE, V11, P2668, DOI 10.1175/1520-0442(1998)0112.0.CO;2 SMITH SD, 1980, J PHYS OCEANOGR, V10, P709, DOI 10.1175/1520-0485(1980)0102.0.CO;2 SPRINTALL J, 1994, J GEOPHYS RES-OCEANS, V99, P963, DOI 10.1029/93JC02809 STRAMMA L, 1999, DEEP SEA RES 2, V4, P279 Stramma L, 2003, ELSEV OCEANOGR SERIE, V68, P1 TAKAHASHI T, 2009, DEEP SEA RES PT II, V0056 Taylor KE, 2001, J GEOPHYS RES-ATMOS, V106, P7183, DOI 10.1029/2000JD900719 VOITURIEZ B, 1977, CAH ORSTOM OCEANOGR, V15, P313 Ward B, 2006, J GEOPHYS RES-OCEANS, V111, DOI 10.1029/2004JC002689 Weill A, 2003, J CLIMATE, V16, P600, DOI 10.1175/1520-0442(2003)0162.0.CO;2 Woolnough SJ, 2007, Q J ROY METEOR SOC, V133, P117, DOI 10.1002/qj.4 Woolnough SJ, 2000, J CLIMATE, V13, P2086, DOI 10.1175/1520-0442(2000)0132.0.CO;2 Yu LS, 2006, J CLIMATE, V19, P6153, DOI 10.1175/JCLI3970.1 Wade, Malick Caniaux, Guy duPenhoat, Yves Dengler, Marcus Giordani, Herve Hummels, Rebecca Dengler, Marcus/A-7327-2014 Dengler, Marcus/0000-0001-5993-9088 AMMA; European Community This study was supported by the AMMA project. Based on a French initiative, AMMA was built by an international scientific group and is currently funded by a large number of agencies, including those in France, the UK, the US, and Africa. It has been the beneficiary of a major financial contribution from the European Community's Sixth Framework Research Program. Detailed information on scientific coordination and funding is available on the AMMA International web site http://www.amma-international.org. We thank Bernard Bourles, the chief scientist of the EGEE program, and all the persons who acquired and prepared the data used in this study as well as the Captain of the RN L'Atalante and his crew for their help during the EGEE-3 cruise. We warmly thank Dr. Gregory Foltz and an anonymous reviewer for their pertinent and useful comments and remarks. 8 SPRINGER HEIDELBERG HEIDELBERG OCEAN DYNAM; A one-dimensional model is used to analyze, at the local scale, the response of the equatorial Atlantic Ocean under different meteorological conditions. The study was performed at the location of three moored buoys of the Pilot Research Moored Array in the Tropical Atlantic located at 10 degrees W, 0 degrees N; 10 degrees W, 6 degrees S; and 10 degrees W, 10 degrees S. During the EGEE-3 (Etude de la circulation oceanique et de sa variabilite dans le Golfe de Guinee) campaign of May-June 2006, each buoy was visited for maintenance during 2 days. On board the ship, high-resolution atmospheric parameters were collected, as were profiles of temperature, salinity, and current. These data are used here to initialize, force, and validate a one-dimensional model in order to study the diurnal oceanic mixed-layer variability. It is shown that the diurnal variability of the sea surface temperatures is mainly driven by the solar heat flux. The diurnal response of the near-surface temperatures to daytime heating and nighttime cooling has an amplitude of a few tenths of degree. The computed diurnal heat budget experiences a net warming tendency of 31 and 27 Wm(-2) at 0 degrees N and 10 degrees S, respectively, and a cooling tendency of 122 Wm(-2) at 6 degrees S. Both observed and simulated mixed-layer depths experience a jump between the nighttime convection phase and the well-stabilized diurnal water column. Its amplitude changes dramatically depending on the meteorological conditions occurring at the stations and reaches its maximum amplitude (similar to 50 m) at 100 degrees S. At 6 degrees and 10 degrees S, the presence of barrier layers is observed, a feature that is clearer at 10 degrees S. Simulated turbulent kinetic energy (11(E) dissipation rates, compared to independent microstructure measurements, show that the model tracks their diurnal evolution reasonably well. It is also shown that the shear and buoyancy productions and the vertical diffusion of TKE all contribute to the supply of TKE, but the buoyancy production is the main source of TKE during the period of the simulation.

Published
2011
Full Text
View/download PDF

5. Bundled turbidite deposition in the central Pandora Trough (Gulf of Papua) since Last Glacial Maximum: Linking sediment nature and accumulation to sea level fluctuations at millennial timescale

Author

André W. Droxler, Gianni Mallarino, Larry C. Peterson, Samuel J. Bentley, Luc Beaufort, Gerald R. Dickens, Stephan J. Jorry, Bradley N. Opdyke, Laboratoire Environnements Sédimentaires - Géosciences Marines (GM/LES), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Rice University [Houston], Memorial University of Newfoundland [St. John's], Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), University of Miami [Coral Gables], Australian National University (ANU), Laboratoire Environnements Sédimentaires (LES), Géosciences Marines (GM), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Memorial University of Newfoundland = Université Memorial de Terre-Neuve [St. John's, Canada] (MUN), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Institut National de la Recherche Agronomique (INRA)

Subjects
Atmospheric Science, younger dryas event, 010504 meteorology & atmospheric sciences, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], Soil Science, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, Meltwater pulse 1A, Aquatic Science, 010502 geochemistry & geophysics, Oceanography, 01 natural sciences, nicaragua rise, Meltwater pulse 1B, Allerød oscillation, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), Deglaciation, 14. Life underwater, Glacial period, Younger Dryas, oxygen isotope records, meltwater pulse 1a, 0105 earth and related environmental sciences, Earth-Surface Processes, Water Science and Technology, Ecology, Paleontology, surface salinity, Forestry, Last Glacial Maximum, carbonate platforms, pacific warm pool, Geophysics, great barrier reef, caribbean sea, 13. Climate action, Space and Planetary Science, Siliciclastic, Geology, tropical atlantic
Abstract

International audience; Since Last Glacial Maximum (23-19 ka), Earth climate warming and deglaciation occurred in two major steps (Bolling-Allerod and Preboreal), interrupted by a short cooling interval referred to as the Younger Dryas (12.5-11.5 ka B. P.). In this study, three cores (MV-33, MV-66, and MD-40) collected in the central part of Pandora Trough (Gulf of Papua) have been analyzed, and they reveal a detailed sedimentary pattern at millennial timescale. Siliciclastic turbidites disappeared during the Bolling-Allerod and Preboreal intervals to systematically reoccur during the Younger Dryas interval. Subsequent to the final disappearance of the siliciclastic turbidites a calciturbidite occurred during meltwater pulse 1B. The Holocene interval was characterized by a lack of siliciclastic turbidites, relatively high carbonate content, and fine bank-derived aragonitic sediment. The observed millennial timescale sedimentary variability can be explained by sea level fluctuations. During the Last Glacial Maximum, siliciclastic turbidites were numerous when the lowstand coastal system was located along the modern shelf edge. Although they did not occur during the intervals of maximum flooding of the shelf (during meltwater pulses 1A and 1B), siliciclastic turbidites reappear briefly during the Younger Dryas, an interval when sea level rise slowed, stopped, or perhaps even fell. The timing of the calciturbidite coincides with the first reflooding of Eastern Fields Reef, an atoll that remained exposed for most of the glacial stages.

Published
2008
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results