NMC B3 ADP Global Upper Air Observations, daily March 1962 to December 1972

DSS presents a global synoptic set of 12 hourly upper air data reports. These were operationally collected by NMC. They include radiosondes, pibals and aircraft reports received via the Global Telecommunications System (GTS). NMC used Automated Data Processing (ADP) to decode and reformat the GTS reports. This data was the primary input (known as "B 3s") for NMC's modeling and forecasting. It was also a major input for the NCEP/NCAR and ECMWF Reanalysis Projects. The NCAR document TN404 An Introduction to Atmospheric and Oceanographic Datasets, (chapter 3) [http://www.cgd.ucar.edu/cas/tn404/text/tn404_6.html#HEADING18] discusses the collection of this data in greater detail.

The ADPUPA data includes land and ship launched radiosondes and pibals. Data may be available at up to 20 mandatory levels from 1000mb to 10mb, plus a few significant levels. The AIRCFT data includes flight level reports from commercial, military and reconnaissance sources. The data may include pressure, deviation value (deviation from standard atmosphere geopotential height), temperature, dew point, wind direction and speed.

This dataset is in an NCAR blocked version of the NMC Office Note 20 (ON20) format, which involves using the DSS RPTOUT software.

DSS所提供的全球综合大气高空12小时数据集，由NMC实际操作收集。该数据集涵盖了通过全球电信系统（GTS）接收到的无线电探空仪、气球以及飞机报告。NMC利用自动化数据处理（ADP）技术对GTS报告进行解码和格式转换。该数据集作为NMC建模与预测的主要输入（被称为“B 3s”），同时也是NCEP/NCAR及ECMWF再分析项目的重要数据来源。NCAR文档TN404《大气与海洋数据集导论》（第3章）[http://www.cgd.ucar.edu/cas/tn404/text/tn404_6.html#HEADING18]对数据的收集过程进行了更详细的讨论。

ADPUPA数据集包括陆地和船舶发射的无线电探空仪及气球数据，数据可达到20个强制性水平，从1000mb至10mb，以及几个重要水平。AIRCFT数据集包含来自商业、军事和侦察来源的飞行高度报告，数据可能包括气压、偏差值（相对于标准大气地势高度的偏差）、温度、露点、风向和风速。

本数据集采用NCAR版本的NMC办公室笔记20（ON20）格式，涉及使用DSS RPTOUT软件。