Research on Ocean-Atmosphere Variability and Ecosystem Response in the Ross Sea (ROAVERRS)

罗斯海海洋-大气变化和生态系统响应研究（ROAVERRS）

• 批准号: 9420678
• 负责人: Michael Lizotte
• 金额: $ 21.64万
• 依托单位: University of Wisconsin-Oshkosh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9420678&HistoricalAwards=false
• 关键词: Research; Ocean; Atmosphere; Variability; Ecosystem

9420678 Lizotte Research on Ocean-Atmosphere Variability and Ecosystem Response in the Ross Sea (ROAVERRS) This project describes an interdisciplinary study of meteorologic forcing phenomena, sea ice dynamics, ocean hydrography, primary productivity, and benthic-pelagic coupling in the southwestern Ross Sea, Antarctica. The primary goal is to examine how changes in aspects of the polar climate system, in this case wind and temperature, influence marine productivity on a large Antarctic continental shelf. In the Ross Sea, winds off the continent and mesocyclones influence the spatial and temporal distribution of ice cover as well as upper ocean mixed-layer depth and thus control primary production in sea ice and open water systems. The structure, standing stock and productivity of bottom-dwelling biological communities are also linked to meteorologic processes through interseasonal and interannual variation in horizontal and vertical fluxes of organic carbon produced in the upper ocean. Linkages between atmospheric, oceanographic, and biological systems will be investigate during a two and half year field study of the southwestern Ross Sea ecosystem. Direct measurements include: (1) regional wind and air temperature, (2) ice cover, ice movement, and sea surface temperature, (3) hydrographic characteristics of the upper ocean and primary productivity in sea ice and upper water column, (4) vertical flux of organic materials and ocean circulation, and (5) abundance, distribution, and respiration rates of biological communities on the sea floor. Based on archived meteorologic data, these scientists expect that atmospheric variability during the study period will allow them to monitor changes in airflow patterns in the southwestern Ross Sea and to determine their influence on oceanographic and biological patterns. This study will contribute to our knowledge of atmospheric and oceanographic forcing of polar marine ecosystems, and hence lead to a better unders tanding of the polar marine ecosystem response to climate variability.

罗斯海海洋-大气变率和生态系统响应研究（ROAVERRS） 该项目描述了南极罗斯海西南部的气象强迫现象、海冰动力学、海洋水文学、初级生产力和底栖-中上层耦合的跨学科研究。 主要目标是研究极地气候系统各方面的变化（在这种情况下是风和温度）如何影响南极大陆架的海洋生产力。 在罗斯海，大陆风和中气旋影响着冰盖的时空分布以及海洋上层混合层的深度，从而控制着海冰和开放水域系统的初级生产。 底栖生物群落的结构、现存量和生产力也通过海洋上层产生的有机碳的水平和垂直通量的季节间和年际变化与气象过程联系在一起。 大气，海洋和生物系统之间的联系将在为期两年半的罗斯海西南部生态系统的实地研究进行调查。 直接测量包括：（1）区域风和气温，（2）冰盖、冰的运动和海面温度，（3）上层海洋的水文特征和海冰和上层水柱的初级生产力，（4）有机物质的垂直通量和海洋环流，（5）海底生物群落的丰度、分布和呼吸率。 根据存档的气象数据，这些科学家预计，研究期间的大气变化将使他们能够监测罗斯海西南部气流模式的变化，并确定它们对海洋学和生物模式的影响。 本研究将有助于我们了解极地海洋生态系统的大气和海洋强迫，从而导致更好地了解极地海洋生态系统对气候变率的响应。