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Freezing Fog Formation in a Supercooled Boundary Layer: Solving the Winter Fog Forecasting Challenge for Elmendorf Air Force Base, Alaska

机译：过冷边界层冻结雾的形成：解决阿拉斯加埃尔门多夫空军基地的冬季雾预报挑战

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We have examined four complex freezing fog events at Elmendorf Air Force Base, Alaska, to determine the root cause of the fog. These events have drastically impacted operations in the region for years, and are still a mystery to forecasters. The primary goal was to provide a detailed analysis of conditions within the boundary layer that contributed to freezing fog formation within the supercooled liquid water boundary layer. The data sets used to accomplish this goal were surface observations, upper air soundings, satellite images and water level data. In the end, the fog was identified to be the result moisture flux at the surface during high tide, which interacts with cold air from valleys northeast of the base. The interaction causes spontaneous condensation, and fog drains towards the base due to thermal gradients established from differential cooling from diurnal radiative properties. A correlation exists between water levels and moisture flux, which is strong enough that forecasters should focus on water level data and wind speed and direction. Armed with this knowledge, the Air Force and the Department of Defense will reap the benefits of much more timely and accurate fog forecasts.

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作者
Harbaugh, B. J.;
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年度 2007
页码 1-105
总页数 105
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Weather forecasting; Boundary layer; Freezing; Temperature gradients; Fog; Supercooling; Data bases; Radiation; Low temperature; Air force; Upper atmosphere; Diurnal variations; Valleys; Cold weather; Moisture; Timeliness; Air force facilities; Wind velocity; Level(Quantity); Satellite imagery; Sounding; Tides; Condensation; Weather forecasting; Winter; Accuracy; Department of defense; Water; Flux(Rate); Alaska;

机译：天气预报;边界层;冻结;温度梯度;雾;过冷;数据库;辐射;低温;空军;高层大气;昼夜变化;山谷;寒冷天气;水分;及时性;空军设施;风速;水平（数量）;卫星图像;探空;潮汐;凝结;天气预报;冬季;准确性;国防部;水;通量（速率）;阿拉斯加;

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专利

1. Development of intensity based fog climatological information system(daily and hourly) at IGI airport, New Delhi for use infog forecasting and aviation [J] . RAJENDRA KUMAR JENAMANI Mausam: Journal of the Meteorological Department of India . 2012,第1期

机译：在新德里IGI机场开发基于强度的雾气气候信息系统（每天和每小时），以供信息预报和航空使用
2. Boundary layer structure and scavenging effect during a typical winter haze- fog episode in a core city of BTH region, China [J] . Han Suqin, Liu Jingle, Hao Tianyi, Atmospheric environment . 2018,第apra期

机译：BTH地区核心城市典型冬季雾霾天气过程中的边界层结构和清除效应
3. Ion composition of fog water and its relation to air pollutants during winter fog events in Nanjing, China [J] . Yang J., Xie Y.-J., Shi C.-E., Pure and Applied Geophysics . 2012,第5a6期

机译：南京冬季雾事件中雾水的离子组成及其与空气污染物的关系
4. Effect of The High Speed Airflow On The Formation of Ice Crystals In A Supercooled Artificial Water Fog Chamber [C] . Yiqi Shen, Rongjue Wei, Leilei Yin, International symposium on nonlinear acoustics; 19960617-21; Nanjing(CN) . 1996

机译：高速气流对过冷人工水雾室内冰晶形成的影响
5. NONEQUILIBRIUM FOG FORMATION WITHIN THE THERMAL BOUNDARY LAYER [D] . EPSTEIN, MICHAEL -1

机译：热边界层内的非平衡雾形成
6. A Validation Study of Freezing of Gait (FoG) Detection and Machine-Learning-Based FoG Prediction Using Estimated Gait Characteristics with a Wearable Accelerometer [O] . Satyabrata Aich, Pyari Mohan Pradhan, Jinse Park, 2018

机译：使用穿戴式加速度计估算步态特性进行步态冻结（FoG）检测和基于机器学习的FoG预测的验证研究
7. Freezing fog formation in a supercooled boundary layer solving the winter fog forcasting challenge for Elmendorf Air Force Base, Alaska [O] . Harbaugh Bradley J. 2007

机译：在过冷的边界层中形成雾气，解决了阿拉斯加埃尔曼多夫空军基地的冬季雾气预报难题

Freezing Fog Formation in a Supercooled Boundary Layer: Solving the Winter Fog Forecasting Challenge for Elmendorf Air Force Base, Alaska

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