| Type of case | conective | ||||||
| Complexity | complex | ||||||
| Convection | multiple cells in the region | ||||||
| Electric field kV/m | Min Em_m = 0.010 Max Em_m = 27.498 Mean Em_m = 2.017 | ||||||
| Microphysics #/Liter |
| ||||||
| Location | (x,y) ~ (10,20) | ||||||
| Storm Motion | 4.4 m/s to the east, no real motion in the y direction | ||||||
Brief Description | The was out in front of an electrically active part of the storm. |
| Type of case | lightning producing cell decays to debris | ||||||
| Complexity | isolated cell but close to others | ||||||
| Convection | convective | ||||||
| Electric field kV/m | Min Em_m = 0.053 Max Em_m = 29.863 Mean Em_m = 2.428 | ||||||
| Microphysics #/Liter |
| ||||||
| Location | (x,y) ~ (-10,20) | ||||||
| Storm Motion | 1.5 m/s to the east, no discernable motion in the y direction. | ||||||
Brief Description | This starts as cell electrically active at 1707 then decays to debris with weak fields. |
| Type of case | debris | ||||||
| Complexity | complex | ||||||
| Convection | not at time of pass | ||||||
| Electric field kV/m | Min Em_m = 0.338 Max Em_m = 0.386 Mean Em_m = 0.369 | ||||||
| Microphysics #/Liter |
| ||||||
| Location | (x,y) ~ (20,85) | ||||||
| Storm Motion | 3.9 m/s to the east, no real motion in the y direction | ||||||
Brief Description | This is debris from weak convection that apparently never produced lightning. |
| Type of case | complex debris very near complex convection | ||||||
| Complexity | very complex | ||||||
| Convection | yes, active | ||||||
| Electric field kV/m | Min Em_m = 0.099 Max Em_m = 58.318 Mean Em_m = 5.047 | ||||||
| Microphysics #/Liter |
| ||||||
| Location | (x,y) ~ (10,20) | ||||||
| Storm Motion | 4.5 m/s to the east. | ||||||
Brief Description | This is approximately the same position as Case 1. Given the eastward motion of the system, it is not the same cell. But it is on the eastern edge of a very complex system of convection. Apparently little or no wind shear. |
| Type of case | Wide spread cloud | ||||||
| Complexity | complex | ||||||
| Convection | yes, a lot | ||||||
| Electric field kV/m | Min Em_m = nxx Max Em_m = xxx Mean Em_m = xxx | ||||||
| Microphysics #/Liter |
| ||||||
| Location | (x,y) ~ (0, -20) | ||||||
| Storm Motion | 3.4 m/s to the east. | ||||||
Brief Description | This was a ferry flight. Most of the microphysics instruments were not turned on during this time. |
Investigator: None
[Not presented at a teleconference.]
E fields reported in the summaries below are based on the old matrix for determination of the three components of the field. The new matrix provided in April 2001 reduces the negative values of Ez as much as 40 to 60%. So the values reported herein may be too large. Positions are reported herein as (X,Y) coordinates relative to the WSR74-C radar.
Th total concentrations of particles measured by the 2D-C probe are denoted as N30 (ie. concentration of particles >30 microns which is heavily weighted towards smaller particles). N1 refers to the concentration of particles >1mm size, ie. the larger particles. Radar plots were available for only a few of the last summaries we prepared (June 4, 6, and 11). For other days some of the realtime radar plots were utilized but need to be verified.
June 23
Flight from 1636 to 1910 made a few passes at 7.6 km in 2 decaying thunderstorms north of KSC and then flew in and near active cells while trying to land at Patrick AFB before diverting to Vero Beach. E field of +25 to –40 KV/m with large horizontal variations. The aircraft followed the E field decay to ~5 KV/m before the weak anvil disappeared.