Rapid Conjugate Appearance of the Giant Ionospheric Lamb Wave in the Northern Hemisphere After Hunga Tonga Volcano Eruptions

The ionospheric total electron content (TEC) derived from thousands of ground-based GNSS receivers in New Zealand, Australia, Japan and Taiwan for the study of "Rapid Conjugate Appearance of the Giant Ionospheric Lamb Wave in the Northern Hemisphere After Hunga Tonga Volcano Eruptions" by Lin et al. (2022).<br>The data are stored in MAT format [v7.3] (Matlab).<br>The details of variables are described as below:<br>The GNSS sampling rate used here is 1/30 Hz, the size of the time is 2880 (From GPS time 00:00:00 to 23:59:30).<br>For the GPS system, The variables' dimensions are [2880 x 32 x number of stations]<br>LON: The SIP's longitude (Fig1, 3, 4, S2, S3)LAT: The SIP's longitude (Fig1, 3, 4, S2, S3)ELE: Satellite elevation angleVTEC: Vertical TEC (Fig1, 2, 3, 4, S2, S3)bp1TEC: 12~20 min bandpass filtered TEC (Fig1, 3, 4, S2, S3)bp2TEC: 30~50 min bandpass filtered TEC (Fig1, 3, 4, S2, S3)bp3TEC 10~60 min bandpass filtered TEC (Sup S1)FLIPLON: The longitude of conjugated SIP to the opposite hemisphere (Fig1, 3, 4)FLIPLAT: The latitude of conjugated SIP to the opposite hemisphere (Fig1, 3, 4)<br>For the GLONASS system, The variables' dimensions are [2880 x 26 x number of stations]<br>LON2: The SIP's longitude (Fig1, 3, 4 ,S2, S3)LAT2: The SIP's longitude (Fig1, 3, 4 ,S2, S3)ELE2: Satellite elevation angleVTEC2: Vertical TEC (Fig1, 2 3, 4 ,S2, S3)bp1TEC2: 12~20 min bandpass filtered TEC (Fig1, 3, 4 ,S2, S3)bp2TEC2: 30~50 min bandpass filtered TEC (Fig1, 3, 4 ,S2, S3)bp3TEC2 10~60 min bandpass filtered TEC (S1)FLIPLON2: The longitude of conjugated SIP to the opposite hemisphere (Fig1, 3, 4)FLIPLAT2: The latitude of conjugated SIP to the opposite hemisphere (Fig1, 3, 4)<br>