Dataset of Trans-Ionospheric Pulse Pairs identified by RFS and matched to GLD360/NLDN

This dataset contains information about the location, time, and characteristics of Trans-Ionospheric Pulse Pairs (TIPPs) detected by the Radio Frequency Sensor (RFS) and matched to lightning geolocated by the Global Lightning Detection Network (GLD360) and the National Lightning Detection Network (NLDN). The dataset is formatted in two CSV files, one for the TIPPs matched to lightning strokes from GLD360, and another for TIPPs matched to NLDN. The GLD360 CSV file contains the following column headers: “date”, an integer value for the date of the TIPP in format YYYYMMDD; “time”, the time of the event in UTC in format HH:MM:SS.ms; “lat”, the latitude of the lightning stroke believed to cause the TIPP; “lon”, the longitude of the stroke; “amp_ratio”, the calculated amplitude ratio of the pair of pulses in the TIPP, defined as the amplitude of the second pulse divided by the amplitude of the first; “elevation_angle”, the angle of the line of sight from the lightning stroke to RFS and the line to horizon; “height”, the altitude in meters of the lightning stroke estimated by the pulse separation and the geometry of the lightning stroke and RFS; and ”seawater”, a flag that is 1 if the lightning stroke is over seawater and 0 otherwise. The NLDN CSV file contains all of these columns, as well as an additional column with header “peak_current_ka”, showing the peak current as identified by NLDN in kA. The GLD360 CSV file has 76,348 rows of data in addition to the header, and the NLDN CSV file has 3039 rows of data in addition to the header.

The following are the first few lines of the GLD csv file, formatted as a table:

date

time

lat

lon

amp_ratio

elevation_angle

height

seawater

20230130

00:44.9

-21.6456

-133.5521

1.6294210018164705

54.555523985376695

11989.263322755147

1

20230130

01:23.8

-21.8703

-57.7072

0.7161612511761402

25.262493008013337

12281.589056357543

0

20230130

01:31.1

-21.1522

-130.4267

1.4713751869520337

57.32619104666685

11323.249443359893

1

20230130

01:49.9

-21.0458

-67.3948

0.8685619586317014

34.83982462293637

8572.855591644306

0

The following are the first few lines of the NLDN CSV file, formatted as a table:

date

time

lat

lon

amp_ratio

elevation_angle

height

seawater

peak_current_ka

20230610

40:37.6

26.2289

-79.2476

1.3884252299228965

42.88343153074524

11121.371746885598

1

31

20230610

06:58.9

30.0977

-77.2882

1.0925501269927418

38.82741512120007

6676.31691

1

22

20230610

22:16.6

20.0743

-77.9462

1.2123299680528041

45.285880494435226

14728.892822447133

1

71

20230610

23:39.6

26.152

-77.97

1.2654190758450512

41.875457645952196

8816.359011291886

1

26

20230610

39:22.6

21.6937

-81.0108

1.6896604827304882

47.18951081763928

11662.531689479087

1

61

This data has been made available for the public with LA-UR-25-20343