whatalife
Moderator
Hold on...so am I reading that 500mb isn't relevant when it comes to weather and the surface is more important?
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Yeah! Something like that...SMH!
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Hold on...so am I reading that 500mb isn't relevant when it comes to weather and the surface is more important?
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Haven't seen a dgex map latelyNo, your reading that the NAM looks good! And no matter what the 500mb pattern looks like, we gonna torch!
Thank you bouncycorn! Looking at H5 is not always important, specially trying to determine winter weather.
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That's not necessarily true. Actually it's not true at all. Surface features and H5 features affect each other all the time. A low often strengthens a trough. A cold core high can form under both a ridge and trough. It can be blazing hot under a trough or cold under a ridge. They affect each other. H5 is not always an end all solution. Also, H3 has a huge impact on cyclogenesis.
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I hope you guys realize that these two levels are tightly coupled and usually do not operate independently of one another... Cold core highs actually form underneath the backend of an upper level trough and front end of an oncoming upper level ridge due to mass continuity requirements induced by confluent, decelerating, sinking air aloft. In the case of ageostrophic transverse circulations induced by upper level jet streaks within the mean flow, this concept can modify slightly...
somethings you cant make upHold on...so am I reading that 500mb isn't relevant when it comes to weather and the surface is more important?
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No, the 500 hpa level actually can control the surface, in fact, anywhere in the atmospheric column at or above the surface can influence what occurs near the ground via mass continuity (among a host of other forces). The 500 hpa level is often chosen to analyze features such as vorticity because it's the level of non-divergence wherein mass is usually neither diverging or converging in this layer, these tend to occur at the boundaries of the troposphere....That was my point. H5 doesn't control the surface there are many other features that control surface conditions. Also surface features can impact H5 and other upper air features.
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Good postNo, the 500 hpa level actually can control the surface, in fact, anywhere in the atmospheric column at or above the surface can influence what occurs near the ground via mass continuity (among a host of other forces). The 500 hpa level is often chosen to analyze features such as vorticity because it's the level of non-divergence wherein mass is usually neither diverging or converging in this layer, these tend to occur at the boundaries of the troposphere....
Agree with Eric. I think the point was with experience looking at H5 and vorticity, one can "see" what's happening at the surface (more or less) without loading up the mslp charts...especially when tracking certain features and storm evolution. A low isn't magically going to pop if it doesn't match up with the look at h5...the surface is reflective of h5, simple.
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somethings you cant make up
this thread fell in the sh***** 24 hours ago. if the euro and eps suck I'm locking it
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Agree with Eric. I think the point was with experience looking at H5 and vorticity, one can "see" what's happening at the surface (more or less) without loading up the mslp charts...especially when tracking certain features and storm evolution. A low isn't magically going to pop if it doesn't match up with the look at h5...the surface is reflective of h5, simple.
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What is happening in this thread? I have this book, from middle school that explains basic absolute vorticity and stuff. divergence, convergence. I think I may need to upload it. It's a little lacking because it's for ages 8-12 years old, but it easily gets the point across.
Hold on...so am I reading that 500mb isn't relevant when it comes to weather and the surface is more important?
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