Pilot Chart Summary Data

These one-degree and five-degree quadrangle summaries give the observation count for an eight-point "wind rose", and means and standard deviations for: wind speed, pressure, air temperature, wet-bulb temperature, sea surface temperature, air-sea temperature difference, and wave height. Also included are light and heavy superstructure icing potential and frequency of gales. The general period summarized is 1850 to 1970, but the actual period summarized varies by ocean basin. These long-term monthly averages were used to produce the U.S. Navy Marine Climatic Atlas.

本数据集包含一度和五度四边形概要，提供了八点风向玫瑰图的观测次数，以及风速、气压、空气温度、湿球温度、海面温度、空气-海水温度差以及波高的平均值和标准差。此外，还包括轻度和重度上层结冰潜势及其频次。概要的通用周期为1850年至1970年，但实际周期因海洋盆地而异。这些长期月平均数据被用于生成美国海军海洋气候图集。