Weather systems & patterns
Imagine our weather if Earth were completely motionless, had a flat dry landscape and an un-tilted axis. This of course is not the case; if it were, the weather would be very different. The local weather that impacts our daily lives results from large global patterns in the atmosphere caused by the interactions of solar radiation, Earth's large ocean, diverse landscapes, and motion in space.新时时彩免费预测 彩仙阁官网 3d最新买法稳赚不赔 极速3d技巧规律 双色球截止投注时间是几点 北京pk10走势图怎么分析 pk10赛车投注技巧 pk10最牛计划网站 gblive最新版本 pk10大小必赢计划软件 旺彩预测电脑版 聚富视界软件app下载 双色球投注单填写 pk10五码必中计划群 bet007足球即时比分网 球探网足球即时此分 高手七星彩口诀
Earth’s orbit around the sun and its rotation on a tilted axis causes some parts of Earth to receive more solar radiation than others. This uneven heating produces global circulation patterns.offsite link For example, the abundance of energy reaching the equator produces hot humid air that rises high into the atmosphere. A low pressure area forms at the surface and a region of clouds forms at altitude. The air eventually stops rising and spreads north and south towards the Earth's poles. About 2000 miles from the equator, the air falls back to Earth's surface blowing towards the pole and back to the equator. Six of these large convection currents cover the Earth from pole to pole.彩仙阁官网 3d最新买法稳赚不赔 极速3d技巧规律 双色球截止投注时间是几点 北京pk10走势图怎么分析 pk10赛车投注技巧 pk10最牛计划网站 gblive最新版本 pk10大小必赢计划软件 旺彩预测电脑版 聚富视界软件app下载 双色球投注单填写 pk10五码必中计划群 bet007足球即时比分网 球探网足球即时此分 高手七星彩口诀
These global wind patterns drive large bodies of air called air masses. Air masses are thousands of feet thick and extend across large areas of the Earth. The location over which an air mass forms will determine its characteristics. For example, air over the tropical ocean becomes exceptionally hot and humid. Air over a high latitude continent may become cold and dry. You have probably noticed the temperature rapidly dropping on a nice warm day as a cold air mass pushed a warm one out the way.
The location where two air masses meet is called a front. They can be indirectly observed using current weather maps, which can be used to track them as the move across the Earth. Cold fronts, generally shown in blue, occur where a cold air mass is replacing a warm air mass. Warm fronts, shown in red, occur where warm air replaces cold air.彩仙阁官网 3d最新买法稳赚不赔 极速3d技巧规律 双色球截止投注时间是几点 北京pk10走势图怎么分析 pk10赛车投注技巧 pk10最牛计划网站 gblive最新版本 pk10大小必赢计划软件 旺彩预测电脑版 聚富视界软件app下载 双色球投注单填写 pk10五码必中计划群 bet007足球即时比分网 球探网足球即时此分 高手七星彩口诀
The local weather conditions that we experience at the Earth's surface are related to these air masses and fronts. However the environment far above us impacts their movement. High in the atmosphere, narrow bands of strong wind, such as the jet streams, steer weather systems and transfer heat and moisture around the globe.
As they travel across the Earth, air masses and global winds do not move in straight lines. Similar to a person trying to walk straight across a spinning Merry-Go-Round, winds get deflected from a straight-line path as they blow across the rotating Earth. In the Northern Hemisphere air veers to the right and in the Southern Hemisphere to the left. This motion can result in large circulating weather systems, as air blows away from or into a high or low pressureoffsite link area. Hurricanes and nor'easters are examples of these cyclonic ystems.彩仙阁官网 3d最新买法稳赚不赔 极速3d技巧规律 双色球截止投注时间是几点 北京pk10走势图怎么分析 pk10赛车投注技巧 pk10最牛计划网站 gblive最新版本 pk10大小必赢计划软件 旺彩预测电脑版 聚富视界软件app下载 双色球投注单填写 pk10五码必中计划群 bet007足球即时比分网 球探网足球即时此分 高手七星彩口诀
Students should understand that weather events that they experience do not just occur at random but are dependent upon scientific principles and processes. The clouds, temperature, precipitation, winds and storms that you and your students observe are dependent on interactions between global systems and your local conditions such as geography, latitude, moisture levels and solar energy absorption. This collection provides real-world and real-time resources to help educators develop students' understanding of the interactions of these Earth systems.
Introductory text compiled from resources provided by NOAA's National Weather Service.
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