日本最流行的用于气象数据采集的密集阵列系统是AMeDAS，它是自动气象数据采集系统的缩写。然而，由于缺乏气候要素和缺失数据等原因，AMeDAS的数据无法用于建筑能耗计算。因此，从原始AMeDAS数据扩展而来的新气象数据已被开发用于建筑能耗计算。新的天气数据被指定为扩展的阿梅达斯天气数据（EA天气数据）。EA天气数据包括日本各地的842个气象站，可作为每小时的天气数据集提供。 EA天气数据由以下八个气候要素组成:（1）大气温度，（2）湿度比，（3）水平总辐射，（4）大气辐射，（5）风向，（6）风速，（7）降水量和（8）日照时数。EA天气数据有两种类型:一种是15年的EA天气数据（1981年至1995年）；另一个是标准EA天气数据。标准EA气象数据类似于欧洲国家的试验参考年（TRY）和设计参考年（DRY）数据，以及美国的典型气象年（TMY）数据。这些数据是从15个- 年度天气数据。这两种类型的EA天气数据都可以在五张CD-ROM上获得。还提供了一个程序，使用户能够计算指定深度的水平全球辐射和地下温度产生的光束、漫射和倾斜表面辐射，以及从五个CD-ROM中搜索目标站和年份。本文概述了EA天气数据，包括与源数据的比较、缺失数据的处理、非观测气候要素的数据估计和补充，以及标准EA天气数据的选择方法。 单元:科学:研讨会，ASHRAE交易，第106卷，第页。2.

The most popular dense array system for weather data acquisition in Japan is known as AMeDAS, which is the abbre-viation for Automated Meteorological Data Acquisition System. However, the data from AMeDAS are not available for building energy calculation because of a lack of climatic elements and missing data, etc. Therefore, new weather data, expanded from the original AMeDAS data, have been devel-oped for building energy calculations. The new weather data have been designated as Expanded AMeDAS weather data (EA weather data). EA weather data, including 842 stations throughout Japan, are available as hourly based weather data sets. EA weather data are composed of the following eight climatic elements: (1) atmospheric temperature, (2) humidity ratio, (3) horizon-tal global irradiation, (4) atmospheric irradiation, (5) wind direction, (6) wind speed, (7) precipitation, and (8) sunshine duration. There are two types of EA weather data: one is 15- year EA weather data (from 1981 to 1995); the other is Stan-dard EA weather data. Standard EA weather data are similar to Test Reference Year (TRY) and Design Reference Year (DRY) data in European countries and Typical Meteorologi-cal Year (TMY) data in the U.S. They were selected from the 15-year EA weather data. Both types of EA weather data are available on five CD-ROMs. A program is also available that enables the user to calculate beam, diffuse, and tilted surface irradiation from horizontal global irradiation and under-ground temperature at a designated depth as well as to search for a target station and year from the five CD-ROMs. This paper outlines the EA weather data, including its compi-lation from the source data, treatment for missing data, data estimation and supplementation of non-observed climatic elements, and the selection method of Standard EA weather data.Units: SI