CTD data of the Hawaii Ocean Time-series (HOT) program in the North Pacific 100 miles north of Oahu, Hawaii for cruises HOT177-188 during 2006 (NODC Accession 0042029)

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.

HOT CTD data are collected using a SeaBird CTD 9-11 Plus with dual sensors at the maximum sampling rate of 24 samples per second (24 Hz). They are screened for errors and processed to 2-dbar averages. Starting in 2006, the percent transmission field was replaced with a nitrate in the dataset.

In separate NODC Accessions, Niskin bottle and thermosalinograph data from these same cruises are available (see supplementary information below).

夏威夷海洋时间序列（Hawaii Ocean Time-series，简称HOT）计划会在夏威夷瓦胡岛以北约100公里的观测站点，持续开展物理、生物与化学要素的重复观测。该计划每月约造访两个固定站点：卡赫角（1号站：北纬21.34°，西经158.27°）与ALOHA站（2号站：北纬22.75°，西经158°）。其余多个站点会根据相似研究目标或锚系设备部署需求，开展间歇性观测。

HOT项目的温盐深仪（Conductivity, Temperature, Depth，简称CTD）数据由搭载双传感器的海鸟（SeaBird）CTD 9-11 Plus型设备采集，最高采样率为每秒24个样本（24 Hz）。所有数据均经过误差筛查，并处理为每2分巴（dbar）的平均数据。自2006年起，数据集中原有的透光率字段被替换为硝酸盐浓度数据。

在独立的国家海洋数据中心（National Oceanographic Data Center，简称NODC）存档批次中，可获取本航次配套的尼斯金采水器（Niskin bottle）与温盐廓线仪（thermosalinograph）观测数据（详见下文补充材料）。