Global Climatology and Atlantic Ocean Atlas

The WOCE Global Hydrographic Climatology WGHC (published as BSH Report 35, 2004) provides a consistent and coherent hydrographic gridded full depth data set on 45 depth levels with a 0.5° spatial resolution. High quality hydrographic observations from the WOCE one time and repeat hydrographic cruises with ca. 9000 stations for the period 1990 - 1998 are the modern basis.

The reference observed data set, comprising WOCE and high quality cruises occupied after 1970 (a total of 19867 profiles distributed over 384 cruises) is used to quality control a historical data set of older cruises occupied mostly before 1970 and profiles not included in the high quality subset (a total of 1 039 668 profiles distributed over ca. 42 000 cruises).

For the WGHC climatology the original profile data have been isopycnically averaged using optimal interpolation. Seven parameters subjected to a strict quality control are given: temperature, potential temperature, salinity, oxygen, silicate, nitrate, phosphate.

以BSH报告35号（2004年）正式发布的世界海洋环流实验（WOCE）全球水文气候数据集（WOCE Global Hydrographic Climatology，简称WGHC），提供了一套一致且连贯的网格化全深度水文数据集，涵盖45个深度层，空间分辨率为0.5°。该数据集的现代观测基础为1990-1998年间的WOCE单次与重复水文考察航次，总计约9000个观测站位。

本次研究所依托的参考观测数据集，涵盖1970年后的WOCE与高质量水文考察航次，总计包含384个航次的19867条观测剖面；同时利用该参考数据集，对主要发布于1970年前的旧航次历史数据集，以及未纳入高质量子集的剖面（总计约42000个航次的1039668条观测剖面）开展质量控制。

针对WGHC气候数据集，原始剖面数据通过最优插值法进行等密度面平均处理。该数据集共包含7项经过严格质量控制的水文参数：温度、位温、盐度、溶解氧、硅酸盐、硝酸盐与磷酸盐。