Minnett Peter

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Minnett
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Peter
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  • Article
    Supplement to Cirene : air-sea interactions in the Seychelles-Chagos thermocline ridge region
    (American Meteorological Society, 2009-01) Vialard, Jérôme ; Duvel, J. P. ; McPhaden, Michael J. ; Bouruet-Aubertot, Pascale ; Ward, Brian ; Key, E. ; Bourras, Denis ; Weller, Robert A. ; Minnett, Peter ; Weill, A. ; Cassou, Christophe ; Eymard, L. ; Fristedt, Tim ; Basdevant, C. ; Dandonneau, Y. ; Duteil, O. ; Izumo, T. ; de Boyer Montegut, C. ; Masson, S. ; Marsac, F. ; Menkes, C. ; Kennan, S.
    The Vasco—Cirene field experiment, in January—February 2007, targeted the Seychelles—Chagos thermocline ridge (SCTR) region, with the main purpose of investigating Madden—Julian Oscillation (MJO)-related SST events. The Validation of the Aeroclipper System under Convective Occurrences (Vasco) experiment (Duvel et al. 2009) and Cirene cruise were designed to provide complementary views of air—sea interaction in the SCTR region. While meteorological balloons were deployed from the Seychelles as a part of Vasco, the Research Vessel (R/V) Suroît was cruising the SCTR region as a part of Cirene.
  • Article
    Environmental controls, oceanography and population dynamics of pathogens and harmful algal blooms: connecting sources to human exposure
    (BioMed Central, 2008-11-07) Dyble, Julianne ; Bienfang, Paul ; Dusek, Eva ; Hitchcock, Gary ; Holland, A. Fredrick ; Laws, Edward A. ; Lerczak, James A. ; McGillicuddy, Dennis J. ; Minnett, Peter ; Moore, Stephanie K. ; O'Kelly, Charles ; Solo-Gabriele, Helena M. ; Wang, John D.
    Coupled physical-biological models are capable of linking the complex interactions between environmental factors and physical hydrodynamics to simulate the growth, toxicity and transport of infectious pathogens and harmful algal blooms (HABs). Such simulations can be used to assess and predict the impact of pathogens and HABs on human health. Given the widespread and increasing reliance of coastal communities on aquatic systems for drinking water, seafood and recreation, such predictions are critical for making informed resource management decisions. Here we identify three challenges to making this connection between pathogens/HABs and human health: predicting concentrations and toxicity; identifying the spatial and temporal scales of population and ecosystem interactions; and applying the understanding of population dynamics of pathogens/HABs to management strategies. We elaborate on the need to meet each of these challenges, describe how modeling approaches can be used and discuss strategies for moving forward in addressing these challenges.
  • Article
    Cirene : air-sea iInteractions in the Seychelles-Chagos thermocline ridge region
    (American Meteorological Society, 2009-01) Vialard, Jérôme ; Duvel, J. P. ; McPhaden, Michael J. ; Bouruet-Aubertot, Pascale ; Ward, Brian ; Key, E. ; Bourras, Denis ; Weller, Robert A. ; Minnett, Peter ; Weill, A. ; Cassou, Christophe ; Eymard, L. ; Fristedt, Tim ; Basdevant, C. ; Dandonneau, Y. ; Duteil, O. ; Izumo, T. ; de Boyer Montegut, C. ; Masson, S. ; Marsac, F. ; Menkes, C. ; Kennan, S.
    The Vasco—Cirene program ex-plores how strong air—sea inter-actions promoted by the shallow thermocline and high sea surface temperature in the Seychelles—Chagos thermocline ridge results in marked variability at synoptic, intraseasonal, and interannual time scales. The Cirene oceano-graphic cruise collected oceanic, atmospheric, and air—sea flux observations in this region in Jan-uary—February 2007. The contem-poraneous Vasco field experiment complemented these measure-ments with balloon deployments from the Seychelles. Cirene also contributed to the development of the Indian Ocean observing system via deployment of a moor-ing and 12 Argo profilers. Unusual conditions prevailed in the Indian Ocean during Janu-ary and February 2007, following the Indian Ocean dipole climate anomaly of late 2006. Cirene measurements show that the Seychelles—Chagos thermocline ridge had higher-than-usual heat content with subsurface anomalies up to 7°C. The ocean surface was warmer and fresher than average, and unusual eastward currents prevailed down to 800 m. These anomalous conditions had a major impact on tuna fishing in early 2007. Our dataset also sampled the genesis and maturation of Tropical Cyclone Dora, including high surface temperatures and a strong diurnal cycle before the cyclone, followed by a 1.5°C cool-ing over 10 days. Balloonborne instruments sampled the surface and boundary layer dynamics of Dora. We observed small-scale structures like dry-air layers in the atmosphere and diurnal warm layers in the near-surface ocean. The Cirene data will quantify the impact of these finescale features on the upper-ocean heat budget and atmospheric deep convection.