Investigation of Bio-Physical Coupling in the Seasonal Ice Zone (BiPhyCoSi)

季节性冰区生物物理耦合研究 (BiPhyCoSi)

• 批准号: 128388178
• 负责人: Dr. Martin Losch, Ph.D.
• 金额: --
• 依托单位: Sektion Klimadynamik
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/128388178?language=en
• 关键词: Investigation; Bio; Physical; Coupling; Seasonal

The Antarctic seasonal ice zone (SIZ) has been found to support spring phytoplankton blooms orders of magnitude more intense than growth in neighbouring open ocean waters. These blooms support a large portion of the annual growth at higher trophic levels, they contribute to sedimentation of particulate carbon into deep ocean layers, and their timing is crucial for prey organisms such as zooplankton. However, SIZ blooms may not be repeatable, with blooms sometimes not detected at all. Current methods for assessing SIZ bloom activity are limited to shipboard sampling, with obvious logistical constraints, and satellite remote sensing, which can only detect the edges of the bloom where ice concentrations have fallen to zero. This leaves ocean modelling as the only means of examining aspects of SIZ blooms over large areas and over the full growth period. This study will use a coupled ocean-ice-ecosystem model to provide the first estimates of bloom magnitude and dynamics. Specifically, the study will assess: 1) the relative importance of wind, sea-ice history and insolation; 2) the inter-annual variability in geographical extent and intensity of SIZ blooms over the last 10 years; 3) the amount and variability of biomass rendered invisible to satellites by the presence of sea-ice.

研究发现，南极季节性冰区（SIZ）支持春季浮游植物大量繁殖，其数量级比邻近开阔洋沃茨的浮游植物生长更强烈。这些水华支持了较高营养级的大部分年度生长，它们有助于颗粒碳沉积到深海层，它们的时间对于浮游动物等猎物生物至关重要。然而，SIZ的水华可能不会重复，有时根本无法检测到水华。目前评估SIZ水华活动的方法仅限于船上取样，具有明显的后勤限制，以及卫星遥感，只能检测冰浓度降至零的水华边缘。这使得海洋模型成为研究SIZ大面积和整个生长期水华的唯一手段。这项研究将使用一个耦合的海洋-冰-生态系统模型来提供对水华规模和动态的初步估计。具体而言，该研究将评估：（1）风、海冰历史和日照的相对重要性;（2）过去10年SIZ水华的地理范围和强度的年际变化;（3）由于海冰的存在而使卫星看不见的生物量的数量和变化。

项目成果

Bio-optical provinces in the eastern Atlantic Ocean and their biogeographical relevance

• DOI: 10.5194/bg-8-3609-2011
• 发表时间: 2011-12
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: B. Taylor;E. Torrecilla;A. Bernhardt;Marc H. Taylor;I. Peeken;R. Röttgers;J. Piera;A. Bracher

On the drivers of phytoplankton blooms in the Antarctic marginal ice zone: A modeling approach

• DOI: 10.1029/2012jc008418
• 发表时间: 2013
• 期刊: Journal of Geophysical Research
• 作者: Marc H. Taylor;M. Losch;A. Bracher

Estimation of relative phycoerythrin concentrations from hyperspectral underwater radiance measurements––A statistical approach

通过高光谱水下辐射测量估算相对藻红蛋白浓度——统计方法

• DOI: 10.1002/jgrc.20201
• 发表时间: 2013
• 期刊: Journal of Geophysical Research
• 作者: Taylor;M. H. Taylor;T. Dinter;A. Bracher
• 通讯作者: A. Bracher

On the formulation of sea-ice models. Part 1: Effects of different solver implementations and parameterizations

• DOI: 10.1016/j.ocemod.2009.12.008
• 发表时间: 2010-01-01
• 期刊: OCEAN MODELLING
• 影响因子: 3.2
• 作者: Losch, Martin;Menemenlis, Dimitris;Hill, Chris
• 通讯作者: Hill, Chris