Post by Renae/k9do on May 27, 2006 12:03:28 GMT
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. Summer
brings decreased ratios of O (atomic oxygen) to O2 (molecular
oxygen) and of O to N2 (molecular nitrogen). 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, a
decrease in O to O2 and O to N2 ratios leads to lower daytime MUFs
in the summer.
in daytime F2 region MUFs. This is in large part due to a change in
the composition of the atmosphere at F2 region altitudes. Summer
brings decreased ratios of O (atomic oxygen) to O2 (molecular
oxygen) and of O to N2 (molecular nitrogen). 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, a
decrease in O to O2 and O to N2 ratios leads to lower daytime MUFs
in the summer.