The Comprehensive Historical Upper Air Network

The Comprehensive Historical Upper-Air Network (CHUAN) represents a global, historical upper-air dataset that has been derived from heterogeneous data available from various sources, including newly digitized data. The data have been derived from radiosondes, pilot balloons, registering balloons and kites and has been subjected to a systematic quality assessment. CHUAN has focused on collecting data for pre-1957 . This product is the "V1.7" corrected (quality controlled) data with no bias or radiation correction applied ("CDC" in CHUAN documentation). There are other products available in "V1.7", like corrected data with bias and radiation corrections and the raw (non quality controlled) soundings, along with others, that are not available at this time.A new version is expected to be available in mid 2014.

综合历史高空观测网（Comprehensive Historical Upper-Air Network，CHUAN）是一套全球性历史高空观测数据集，其数据源涵盖多类异构资料，其中包含新近数字化的观测数据。该数据集的原始资料取自无线电探空仪、测风气球、自记气球及风筝探空获取的观测结果，并经过系统性质量评估。CHUAN的采集重点为1957年之前的观测数据。本次发布的产品为"V1.7"版本的经校正（质量控制）数据，未施加偏差校正与辐射校正（CHUAN文档中记为"CDC"）。"V1.7"版本还包含其他类型产品，例如施加了偏差与辐射校正的校正数据，以及未经过质量控制的原始探空资料等，但此类产品目前暂未对外提供。预计2014年中期将推出新版本数据集。

搜集汇总

背景与挑战

背景概述

该数据集是一个全球历史高空数据集（CHUAN），整合了多种来源的异构数据，包括新数字化数据，并经过系统质量评估，重点关注1957年之前的数据。数据时间范围从1904年到2007年，包含位势高度、湿度、高空温度和高空风等变量，总数据量为17.75 GB，以ASCII格式提供，采用知识共享署名4.0国际许可。