由ASCE环境和水资源研究所标准发展委员会大气水管理标准委员会编制的《过冷雾消散项目的设计、运行和评估标准实施规程》（ANSI/ASCE/EWRI 44-20）为旨在消散过冷雾的项目提供了指南。长时间的雾霾会对航空、旅游、运输和采矿业产生巨大的经济影响，也会对农业产生负面影响。使用最先进的过冷雾消散技术来增加能见度，可以减少这些问题。 这一更新的标准描述了设计、实施和评估过冷雾消散操作的过程，包括处理最近技术改进的新材料。在回顾过冷雾消散技术的基础上，对雾的特性进行了概述。这些项目的设计包括项目范围、交付方法、播种剂选择、目标和交付注意事项以及播种暂停标准等主题。实施疏散项目的方面包括操作手册、人员要求、决策、通信、公共信息和安全考虑。 描述了评估项目的方法。标准44-20特别适用于水文学家、水文气象学家、环境和水资源工程师、机场和采矿运营经理、政府机构的水资源经理、地面运输经理，以及处理过冷雾造成的限制的其他人员。

Prepared by the Atmospheric Water Management Standards Committee of the Standards Development Council of the Environmental and Water Resources Institute of ASCEStandard Practice for the Design, Operation, and Evaluation of Supercooled Fog Dispersal Projects, ANSI/ASCE/EWRI 44-20, presents guidelines for programs aimed at dispersing supercooled fog. Extended periods of fog can have large economic impacts on aviation, tourism, transportation, and mining industries, as well as a negative effect on agriculture. These problems can be reduced using state-of-the-art supercooled fog dispersal technologies to increase visibility.This updated standard describes the process through which supercooled fog dispersal operations should be designed, conducted, and evaluated, and includes new material dealing with recent technological improvements. A review of supercooled fog dispersal technology is followed by an overview of fog characteristics. The design of these projects encompasses such topics as project scope, delivery methods, seeding agent selection, targeting and delivery considerations, and seeding suspension criteria. Aspects of conducting a dispersal project include the operational manual, personnel requirements, decision making, communications, and public information and safety considerations. Methods of evaluating a project are described.Standard 44-20 is particularly useful to hydrologists, hydrometeorologists, environmental and water resources engineers, airport and mining operations managers, water managers with governmental agencies, surface transportation managers, and others who deal with the limitations posed by supercooled fog.