Seasonal and Interannual Variations of Stratification and Cross-Shelf Density Structure on the Middle Atlantic Bight Shelf

大西洋中部湾陆架层结和跨陆架密度结构的季节和年际变化

• 批准号: 0220773
• 负责人: Steven Lentz
• 金额: $ 42.94万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0220773&HistoricalAwards=false
• 关键词: Seasonal; Interannual; Variations; Stratification; Cross

0220773 LentzIn order to better understand the annual and interannual variability of the density structure over the Middle Atlantic Bight shelf and the linkages between forcing mechanisms and responses, others have studied temperature and salinity variability, but not the important density parameter. The PIs propose to utilize, in their research, National Centers for Environmental Prediction (NCEP) reanalysis products and historical data from a variety of sources, including light ships, buoys, moorings, and cruises. Initially, the PIs propose to characterize the temperature structure over the shelf and determine its response to heat flux from the atmosphere as opposed to wind stirring and advection. Then they will address the effects of salinity and the variability of the full density field. NCEP reanalysis products are available for the period 1948 to present. Oceanographic observations extend to 1900, but most observations post-date 1950. Air-sea fluxes may need to be recalculated to account for significant variability at scales unresolved by the NCEP grid. Bin sizes for analysis will be determined by data coverage. Temporal resolution of interannual comparisons will also be determined by data coverage.

[0220773]为了更好地了解大西洋中部大陆架密度结构的年际变化及其强迫机制与响应之间的联系，其他人研究了温度和盐度的变化，但没有研究重要的密度参数。pi建议在他们的研究中利用国家环境预测中心（NCEP）的再分析产品和各种来源的历史数据，包括轻型船舶、浮标、系泊和巡航。最初，pi建议表征大陆架上空的温度结构，并确定其对来自大气的热通量的响应，而不是风搅拌和平流。然后，他们将讨论盐度的影响和全密度场的可变性。NCEP再分析产品可用于1948年至今。海洋学观测可追溯到1900年，但大多数观测是1950年以后的。海气通量可能需要重新计算，以解释NCEP网格无法解决的尺度上的显著变率。用于分析的Bin大小将由数据覆盖范围决定。年际比较的时间分辨率也将由数据覆盖范围决定。