Niskin bottle data of the Hawaii Ocean Time-series (HOT) program in the North Pacific 100 miles north of Oahu, Hawaii for cruises HOT208-217 during 2009 (NODC Accession 0069177)

The HOT program makes repeated observations of the physics, biology and chemistry at a site approximately 100 km north of Oahu, Hawaii. Two stations are visited about once a month: Kahe Point (Station 1: 21.34N, 158.27W) and Station ALOHA (Station 2: 22.75N, 158W). Various other stations are made intermittently in support of similar research objectives or mooring deployments.

Samples of water column chemical analyses were collected mostly in the upper 1000m using Niskin bottles mounted on a rosette. The strategy was to sample at density horizons within the main thermocline at pressure horizons above and below this region (i.e., <150 dbar and >2000 dbar). Care was applied to ensure the highest possible accuracy and precision.

This NODC Accession contains Niskin Bottle data for HOT cruises 208-217 during 2009. CTD and thermosalinograph data from the same cruises are available in separate Accessions.

HOT 207 cruise was cut short due to a problem with the winch. No data are available.

HOT计划（HOT program）对夏威夷瓦胡岛以北约100公里的站点开展物理、生物及化学过程的重复观测。该项目每月约对两个站点开展一次巡查：卡黑角（站点1：21.34°N，158.27°W）与ALOHA站（站点2：22.75°N，158°W）。其余站点则会为支持相似研究目标或锚系布设工作而开展间歇性观测。
水柱化学分析样品主要借助安装于罗斯特采水器架（rosette）的尼斯金采水瓶（Niskin bottles）采集，采样范围集中于上层1000米水体。采样方案设定为在主温跃层内的密度层位，以及该区域上下两侧的压力层位（即小于150分巴（dbar）与大于2000分巴）开展采样。实验全程严格管控，以保障测量的最高准确度与精密度。
本国家海洋数据中心（National Oceanographic Data Center, NODC）数据入库条目收录了2009年HOT航次208至217的尼斯金采水瓶观测数据。同航次的温盐深仪（Conductivity-Temperature-Depth, CTD）与海水热盐监测仪（thermosalinograph）数据已收录于其他独立的数据入库条目中。
HOT 207航次因绞车故障提前终止，未获取任何观测数据。