ASHRAE研究项目RP-1613为ASHRAE手册基础知识的“气候设计信息”章节和ANSI/ASHRAE标准169《建筑设计标准的天气数据》准备了气候设计条件的更新。这一更新导致台站数量增加到6443个（与2009年相比增加了16%），并在能源标准ANSI/ASHRAE/IES标准90.1中纳入了用于确定气候带的降水数据。最近的一段记录（大多数台站为1986年至2010年）被用来记录气候变化。 与前一版本相比，气候设计温度通常略高，冷却度略高，加热度天数较低，这表明气候总体变暖。此外，RP-1613还准备了天气数据查看器（Weather Data Viewer）的更新版，这是一款独立的产品，工程师可以使用它来访问《HRAE手册-基础》中列出的所有气候设计参数的完整单频和联合频率分布，以及其他参数，如温度箱数据和风玫瑰。 论文的第二部分“为设计和标准修订ASHRAE气候数据——第二部分:晴空太阳辐射模型”详细描述了晴空太阳辐射模型的变化。引文:美国科学与技术研究院学报第119卷第2部分，科罗拉多州丹佛市。

ASHRAE Research Project RP-1613 prepared an update of the climatic design conditions for the "Climatic Design Information" chapter of ASHRAE Handbook—Fundamentals and for ANSI/ASHRAE Standard 169, Weather Data for Building Design Standards. This update resulted in an increase of the number of stations to 6443 (a 16% increase compared to 2009) and the inclusion of precipitation data used in particular to determine climate zones in energy standard ANSI/ ASHRAE/IES Standard 90.1. A more recent period of record (1986–2010 for most stations) was used to incorporate changes in the climate. Compared to the previous edition, climatic design temperatures are generally slightly higher, cooling degree are slightly higher, and heating degree-days are lower, which is indicative of a general warming of the climate. In addition, RP-1613 prepared an update of theWeather Data Viewer, a stand-alone product used by engineers to access the full single- and joint-frequency distributions of all the climatic design parameters listed inASHRAE Handbook— Fundamentals, as well as additional parameters, such as temperature bin data and wind roses. Part two of the paper, "Revising ASHRAE Climatic Data for Design and Standards— Part II: Clear-Sky Solar Radiation Model," provides a detailed description of the changes made to the clear-sky solar radiation model.