cold front

简明释义

thunderstorm冷锋雷雨

英英释义

例句

1.After the cold front (冷锋) passed through, we noticed frost on the grass in the morning.

在冷锋（冷锋）经过后，我们注意到早晨草地上有霜。

2.The meteorologist warned that a cold front (冷锋) was approaching, bringing a significant drop in temperatures.

气象学家警告说，一个冷锋（冷锋）正在逼近，气温将显著下降。

3.Farmers are preparing for the cold front (冷锋) to protect their crops from the sudden temperature change.

农民们正在准备应对冷锋（冷锋），以保护他们的作物免受突如其来的温度变化。

4.As the cold front (冷锋) moves in, be sure to dress warmly when you go outside.

随着冷锋（冷锋）的到来，外出时一定要穿暖和。

5.The arrival of the cold front (冷锋) caused heavy rain followed by clear skies.

冷锋（冷锋）的到来导致了大雨，随后是晴朗的天空。

作文

A cold front is a meteorological term that refers to the leading edge of a cooler mass of air, which displaces warmer air ahead of it. This phenomenon occurs when a cold air mass moves into an area occupied by warmer air, resulting in various weather changes. Understanding the dynamics of a cold front is crucial for predicting weather patterns and preparing for potential storms. When a cold front approaches, one can often observe a dramatic shift in temperature. The warm air that was previously present can be replaced by significantly cooler air, sometimes within a matter of hours. This sudden change can lead to a variety of weather conditions, including thunderstorms, heavy rain, or even snow, depending on the season and geographical location. For instance, during the summer months, a cold front can trigger severe thunderstorms, characterized by strong winds, lightning, and heavy precipitation. Conversely, in winter, the same phenomenon can lead to snowfall and icy conditions. The movement of a cold front is typically swift, and its effects can be felt over a relatively short period. Meteorologists track these fronts using satellite imagery and radar technology to provide accurate forecasts. As the cold front advances, it often forces the warm air upwards, creating instability in the atmosphere. This process can lead to the formation of cumulonimbus clouds, which are associated with severe weather events. Moreover, the passage of a cold front can significantly alter atmospheric pressure. Ahead of the front, the pressure tends to be lower, while behind it, the pressure rises. This change in pressure can create gusty winds as the air masses interact. Understanding these wind patterns is essential for aviation, maritime activities, and outdoor planning. In addition to temperature drops and wind changes, a cold front can also influence humidity levels. As the cooler air moves in, it usually contains less moisture than the warm air it displaces. This can lead to clearer skies and lower humidity levels after the front passes, providing a refreshing change in weather. People living in regions where cold fronts are common, such as the Midwest of the United States, often prepare for these weather events by staying informed through weather alerts. Schools may have protocols in place for severe weather, and communities might organize resources to assist those affected by extreme conditions. In conclusion, a cold front plays a significant role in shaping our weather. By understanding what a cold front is and how it operates, individuals can better prepare for the potential impacts it may bring. Whether it’s enjoying cooler temperatures after a hot spell or bracing for a storm, knowledge of cold fronts enhances our ability to respond to the ever-changing nature of our environment.

冷锋是一个气象术语，指的是较冷空气团的前缘，它取代了前方的暖空气。当一个冷空气团进入一个被暖空气占据的区域时，就会发生这种现象，导致各种天气变化。理解冷锋的动态对于预测天气模式和准备潜在风暴至关重要。当冷锋逼近时，人们通常可以观察到温度的剧烈变化。之前存在的暖空气可以在短短几个小时内被显著更冷的空气所取代。这种突然的变化可能导致多种天气条件，包括雷暴、暴雨，甚至雪，具体取决于季节和地理位置。例如，在夏季，冷锋可以引发强烈的雷暴，特点是强风、闪电和大量降水。相反，在冬季，同样的现象可能导致降雪和冰冷的条件。冷锋的移动通常很迅速，其影响可以在相对较短的时间内感受到。气象学家使用卫星图像和雷达技术来跟踪这些锋面，以提供准确的天气预报。随着冷锋的推进，暖空气往往被迫上升，从而在大气中产生不稳定性。这一过程可能导致积雨云的形成，这与严重的天气事件有关。此外，冷锋的经过还会显著改变大气压力。在锋前，压力往往较低，而在其后，压力则上升。这种压力变化可能会导致空气团相互作用时出现阵风。理解这些风向模式对于航空、海事活动和户外规划至关重要。除了温度下降和风的变化外，冷锋还可以影响湿度水平。随着较冷的空气的移动，它通常比取代的暖空气含有更少的水分。这可能导致在锋通过后天空变得更清澈，湿度降低，带来天气的清新变化。生活在冷锋常见地区的人们，例如美国中西部，通常通过天气预警保持对这些天气事件的关注。学校可能会制定应对极端天气的方案，社区可能会组织资源来帮助受影响的人。总之，冷锋在塑造我们的天气方面发挥着重要作用。通过了解冷锋是什么以及它如何运作，个人可以更好地为它可能带来的潜在影响做好准备。无论是享受炎热天气后的凉爽，还是为风暴做好准备，对冷锋的知识增强了我们应对环境不断变化的能力。