Data set for manuscript "The Earth ionosphere disappeared in whole China during 2024 Mother’s Day Superstorm"

These data come from Chinese Meridian Project(CMP) and ISES Regional Warning Center of China.There are 4 types of data files:1) Ionograms on 10-12 May, 2024 of 14 ionosondes from CMP;'.png' files in folder 'IONOGRAM/YYYYmmdd/STAID/'.2) TEC maps over Chinese and adjacent region on 7-13 May, 2024 from ISES Regional Warning Center of China, with assimilated GNSS observations from CMP and International GNSS Services (IGS)[1];'.dat' files in folder 'TEC/YYYYmmdd/';The grided TEC files include the following spatial resolution:(Line 1-8: Head)Line 9-49: TEC at latitude 55oN, 54oN, 53oN, ..., 15oN;Column 1-71: TEC at longitude 70oE, 71oE, 72oE, ..., 140oE;3) Observations on 10-12 May, 2024 of the Incoherent Scatter Radar (ISR) in Sanya (109.63oE, 18.35oN), 2024 from CMP;'.h5' files in folder 'ISR/YYYYmmdd/OSAYA/';The related parameters for manuscript in SYISR .h5 files are following:Time, Beamdir, GEO, Fittedparameter;Where, time is observation universal time;Beamdir is the azimuth[o] and elevation[o] of different beam direction;GEO is the vector of position of each point in beam direction in (longitude[o], latitude[o], altitude[km]) coordinates;Fittedparameter consists of Ne[m-3], Ti[K], Te[K] and V[m/s] of each point along beam directions in the position of GEO.4) China region Dst index in May, 2024 calculated from four CMP geomagnetic stations[2];'cdst_202405.dat' file in folder 'cDst/';Parameters and formats of cDst.dat file are:Year, Month, Day, Hour, cDst, Dst;I4, X, I2, X, I2, X, I2, X, I7, X, I7;Where, time(Year-Month-Day, Hour) is universal time;'cDst' is the Dst indexes in China calculated with the geomagnetic data of the CMP in Lasa, Chengdu, Wuhan and Hangzhou stations;'Dst' is Dst index.