All Forums  Main Area  General Chatter Area  a decrease in daytime F2 region MUFs

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by vk3pa[/i] [br]Propagation Tidbit -- As we move into summer, we'll see a decrease in daytime F2 region MUFs. This is in large part due to a change in the composition of the atmosphere at F2 region altitudes[blue][i][b]. Summer brings decreased ratios of O (atomic oxygen) to O2 (molecular oxygen) and of O to N2 (molecular nitrogen). [/b][/i][/blue]Since the electron production rate at F2 region altitudes depends on the concentration of O, whereas the electron loss rate is controlled by O2 and N2, [blue][i][b]a decrease in O to O2 and O to N2 ratios leads to lower daytime MUFs in the summer[/b][/i][/blue]. [i][b]we are referenced to nth hemi..[/b][/i] [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.