Autonomous Ocean Flux Buoy 15
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资源简介:
Time-series data from the Naval Postgraduate School Autonomous Ocean Flux Buoy (AOFB) #15. This buoy was deployed at the 2008 NPEO ice camp 8 April 2008. The buoy drifted across the Eurasian Basins and exited the Arctic Ocean through Fram Strait. The time series ended on 30 December 2008. The buoy measured velocity, temperature, salinity, and the vertical turbulent fluxes of heat, salt, and momentum in the ocean surface mixed layer with a custom-built sensor package about 5 m below the ice-ocean interface. The buoy also measured vertical profiles of ocean currents with an RD instruments 600 kHz Acoustic Doppler Current Profiler. AOFB 15 entered open water as it drifted through Fram Strait, on about 26 October 2008. Additional information about the NPS AOFB program, including real-time data from active buoys, is available at: http://www.oc.nps.edu/~stanton/fluxbuoy The flux package data set is provided in Matlab and NetCDF file formats. Each file contains the following variables: time - Time in YYYDDD format from 1900 (days) depth - Depth from surface of ice cover, positive up (m) latitude - Latitude (degrees) longitude - Longitude (degrees) u - Velocity, x-component (m/s) v - Velocity, y-component (m/s) T - Temperature (deg C) S - Salinity (psu) uw - Kinematic Vertical Momentum Flux, x-component (m/s)^2 vw - Kinematic Vertical Momentum Flux, y-component (m/s)^2 wT - Kinematic Vertical Heat Flux (K m/s) wS - Vertical Salt Flux (psu m/s) q2 - Fluctuation Kinetic Energy (m/s)^2 Velocities are reported in the instrument coordinate system of the flux package acoustic travel-time current meter. The fluctuation kinetic energy variable is useful for identifying time periods when the buoy is in open water and flux estimates are contaminated by surface-wave motions.
本数据集为美国海军研究生院(Naval Postgraduate School, NPS)自主海洋通量浮标(Autonomous Ocean Flux Buoy, AOFB)#15的时序观测数据。该浮标于2008年4月8日部署于2008年NPEO冰营,其后漂移穿过欧亚海盆,并经由弗拉姆海峡(Fram Strait)离开北冰洋,观测时序至2008年12月30日终止。
该浮标通过安装于冰-海界面下方约5米处的定制传感器组件,测量了海洋表面混合层内的流速、温度、盐度,以及热、盐、动量的垂直湍流通量。此外,浮标搭载RD Instruments公司生产的600 kHz声学多普勒海流剖面仪(Acoustic Doppler Current Profiler, ADCP),用于测量海流的垂直剖面分布。
2008年10月26日左右,AOFB #15在漂移穿过弗拉姆海峡时进入开阔水域。
有关NPS AOFB项目的更多信息(包括现役浮标的实时观测数据)可通过以下链接获取:http://www.oc.nps.edu/~stanton/fluxbuoy
本通量组件数据集以Matlab与NetCDF两种文件格式提供,每个文件均包含以下变量:
1. time:以1900年为基准的YYYYDDD格式时间(单位:天)
2. depth:冰盖表面至测点的深度(单位:米,向上为正方向)
3. latitude:纬度(单位:度)
4. longitude:经度(单位:度)
5. u:流速x分量(单位:米/秒)
6. v:流速y分量(单位:米/秒)
7. T:海水温度(单位:摄氏度)
8. S:海水盐度(单位:实用盐度单位psu)
9. uw:运动学垂直动量通量x分量(单位:(米/秒)²)
10. vw:运动学垂直动量通量y分量(单位:(米/秒)²)
11. wT:运动学垂直热通量(单位:开尔文·米/秒)
12. wS:垂直盐通量(单位:psu·米/秒)
13. q2:脉动动能(单位:(米/秒)²)
所有流速数据均以通量组件搭载的声学传播时间式海流计的仪器坐标系进行报告。脉动动能变量可用于识别浮标处于开阔水域、通量估算受表面波浪运动干扰的观测时段。
提供机构:
SCIOPS



