# PURPOSE: This file distributes the geomagnetic planetary three-hour index Kp and associated geomagnetic indices as well as relevant solar indices. # LICENSE: CC BY 4.0, except for the sunspot numbers contained in this file, which have the CC BY-NC 4.0 license # SOURCE: Geomagnetic Observatory Niemegk, GFZ Helmholtz Centre for Geosciences # PLEASE CITE: Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O. and Morschhauser, A., 2021. The geomagnetic Kp index # and derived indices of geomagnetic activity. Space Weather, https://doi.org/10.1029/2020SW002641 # # Kp, ap and Ap # The three-hourly equivalent planetary amplitude ap is derived from Kp and the daily equivalent planetary amplitude Ap is the daily mean of ap. # Kp is unitless. Ap and ap are unitless and can be multiplied by 2 nT to yield the average geomagnetic disturbance at 50 degree geomagnetic latitude. # Kp, ap and Ap were introduced by Bartels (1949, 1957) and are produced by Geomagnetic Observatory Niemegk, GFZ Helmholtz Centre for Geosciences. # Described in: Matzka et al. (2021), see reference above. # Data publication: Matzka, J., Bronkalla, O., Tornow, K., Elger, K. and Stolle, C., 2021. Geomagnetic Kp index. V. 1.0. GFZ Data Services, # https://doi.org/10.5880/Kp.0001 # Note: the most recent values are nowcast values and will be replaced by definitive values as soon as they become available. # # International Sunspot Number SN # The international sunspot number SN (written with subscript N) is given as the daily total sunspot number version 2.0 introduced in 2015. # The sunspot data is available under the licence CC BY-NC 4.0 from WDC-SILSO, Royal Observatory of Belgium, Brussels. Described in: # Clette, F., Lefevre, L., 2016. The New Sunspot Number: assembling all corrections. Solar Physics, 291, https://doi.org/10.1007/s11207-016-1014-y # Note: the most recent values are preliminary and replaced by definitive values as soon as they become available. # # F10.7 Solar Radio Flux # Local noon-time observed (F10.7obs) and adjusted (F10.7adj) solar radio flux F10.7 in s.f.u. (10^-22 W m^-2 Hz^-1) is provided by # Dominion Radio Astrophysical Observatory and Natural Resources Canada. # Described in: Tapping, K.F., 2013. The 10.7 cm solar radio flux (F10.7). Space Weather, 11, 394-406, https://doi.org/10.1002/swe.20064 # Note: For ionospheric and atmospheric studies the use of F10.7obs is recommended. # # Short file description (for a detailed file description, see Kp_ap_Ap_SN_F107_format.txt): # 40 header lines, all starting with # # ASCII, blank separated and fixed length, missing data indicated by -1.000 for Kp, -1 for ap and SN, -1.0 for F10.7 # YYYY MM DD is date of UT day, days is days since 1932-01-01 00:00 UT to start of UT day, days_m is days since 1932-01-01 00:00 UT to midday of UT day # BSR is Bartels solar rotation number, dB is day within BSR # Kp1 to Kp8 (Kp for the eight eighth of the UT day), ap1 to ap8 (ap for the eight eighth of the UT day), Ap, SN, F10.7obs, F10.7adj # D indicates if the Kp and SN values are definitive or preliminary. D=0: Kp and SN preliminary; D=1: Kp definitive, SN preliminary; D=2 Kp and SN definitive # # # The format for each line is (i stands for integer, f for float): #iii ii ii iiiii fffff.f iiii ii ff.fff ff.fff ff.fff ff.fff ff.fff ff.fff ff.fff ff.fff iiii iiii iiii iiii iiii iiii iiii iiii iiii iii ffffff.f ffffff.f i # The parameters in each line are: #YYY MM DD days days_m Bsr dB Kp1 Kp2 Kp3 Kp4 Kp5 Kp6 Kp7 Kp8 ap1 ap2 ap3 ap4 ap5 ap6 ap7 ap8 Ap SN F10.7obs F10.7adj D 2025 02 28 34027 34027.5 2612 17 5.000 3.667 4.667 4.333 4.667 4.333 4.000 2.667 48 22 39 32 39 32 27 12 31 117 157.2 154.4 1 2025 03 01 34028 34028.5 2612 18 2.333 3.667 4.000 3.667 3.667 1.667 3.000 3.000 9 22 27 22 22 6 15 15 17 116 152.2 149.5 0 2025 03 02 34029 34029.5 2612 19 1.667 2.000 2.333 1.333 1.333 0.333 0.000 0.333 6 7 9 5 5 2 0 2 4 153 151.2 148.5 0 2025 03 03 34030 34030.5 2612 20 1.333 1.000 1.000 1.000 0.333 0.667 1.000 1.000 5 4 4 4 2 3 4 4 4 124 163.2 160.4 0 2025 03 04 34031 34031.5 2612 21 1.333 2.333 1.667 1.333 1.667 1.667 2.667 4.667 5 9 6 5 6 6 12 39 11 158 160.5 157.9 0 2025 03 05 34032 34032.5 2612 22 3.667 3.000 2.333 2.333 1.667 2.667 1.667 2.333 22 15 9 9 6 12 6 9 11 143 156.5 154.0 0 2025 03 06 34033 34033.5 2612 23 2.333 1.333 2.333 1.667 0.667 1.333 2.333 1.333 9 5 9 6 3 5 9 5 6 130 150.0 147.7 0 2025 03 07 34034 34034.5 2612 24 1.000 2.667 2.333 3.000 2.000 2.667 2.000 1.000 4 12 9 15 7 12 7 4 9 108 146.5 144.3 0 2025 03 08 34035 34035.5 2612 25 1.667 3.000 3.000 3.333 2.333 3.333 4.667 4.667 6 15 15 18 9 18 39 39 20 93 147.5 145.4 0 2025 03 09 34036 34036.5 2612 26 5.000 5.667 4.000 5.000 4.000 2.667 2.667 3.333 48 67 27 48 27 12 12 18 32 100 147.6 145.5 0 2025 03 10 34037 34037.5 2612 27 2.667 2.000 2.000 2.333 2.333 2.667 1.333 2.000 12 7 7 9 9 12 5 7 8 104 149.4 147.4 0 2025 03 11 34038 34038.5 2613 1 2.000 2.333 2.000 2.333 2.333 1.667 1.333 2.667 7 9 7 9 9 6 5 12 8 140 161.4 159.3 0 2025 03 12 34039 34039.5 2613 2 4.000 3.333 3.000 4.000 4.000 5.000 5.000 4.667 27 18 15 27 27 48 48 39 31 156 160.3 158.3 0 2025 03 13 34040 34040.5 2613 3 5.000 4.667 4.333 4.000 4.667 3.667 4.667 4.000 48 39 32 27 39 22 39 27 34 167 175.9 173.8 0 2025 03 14 34041 34041.5 2613 4 5.333 3.000 3.333 3.000 3.333 3.667 2.667 3.333 56 15 18 15 18 22 12 18 22 175 180.1 178.1 0 2025 03 15 34042 34042.5 2613 5 4.000 3.667 3.667 3.667 3.333 3.000 1.000 0.667 27 22 22 22 18 15 4 3 17 169 177.9 176.0 0 2025 03 16 34043 34043.5 2613 6 2.000 2.000 2.000 2.333 3.333 1.000 2.000 2.667 7 7 7 9 18 4 7 12 9 205 185.8 183.9 0 2025 03 17 34044 34044.5 2613 7 3.000 3.333 2.667 1.667 3.000 3.000 3.333 2.667 15 18 12 6 15 15 18 12 14 204 203.5 201.5 0 2025 03 18 34045 34045.5 2613 8 3.333 3.333 2.333 2.333 3.000 3.000 1.667 2.333 18 18 9 9 15 15 6 9 12 193 184.0 182.3 0 2025 03 19 34046 34046.5 2613 9 2.333 4.000 4.000 2.667 3.000 3.333 4.667 3.000 9 27 27 12 15 18 39 15 20 165 179.5 177.9 0 2025 03 20 34047 34047.5 2613 10 2.000 1.667 2.000 0.667 1.333 0.333 1.000 2.000 7 6 7 3 5 2 4 7 5 163 170.2 168.8 0 2025 03 21 34048 34048.5 2613 11 3.333 3.000 1.667 1.667 2.333 4.000 5.333 4.667 18 15 6 6 9 27 56 39 22 162 165.3 164.1 0 2025 03 22 34049 34049.5 2613 12 5.667 5.000 3.000 2.333 3.667 4.000 3.667 4.000 67 48 15 9 22 27 22 27 30 179 177.9 176.7 0 2025 03 23 34050 34050.5 2613 13 4.000 2.000 2.667 1.667 2.000 1.000 1.667 1.333 27 7 12 6 7 4 6 5 9 133 168.1 167.0 0 2025 03 24 34051 34051.5 2613 14 4.000 4.333 2.667 3.333 3.667 3.333 2.667 1.667 27 32 12 18 22 18 12 6 18 78 156.0 155.1 0 2025 03 25 34052 34052.5 2613 15 3.333 2.667 2.667 3.000 2.000 2.333 4.000 3.333 18 12 12 15 7 9 27 18 15 82 156.1 155.3 0 2025 03 26 34053 34053.5 2613 16 4.333 4.333 2.333 3.333 5.667 5.667 6.000 4.667 32 32 9 18 67 67 80 39 43 51 152.3 151.6 0 2025 03 27 34054 34054.5 2613 17 3.667 4.667 4.667 4.000 4.667 4.667 3.333 3.667 22 39 39 27 39 39 18 22 31 82 152.6 152.0 0 2025 03 28 34055 34055.5 2613 18 2.333 3.000 2.667 2.000 2.333 3.000 3.000 4.000 9 15 12 7 9 15 15 27 14 79 160.4 159.8 0 2025 03 29 34056 34056.5 2613 19 3.000 3.667 1.333 -1.000 -1.000 -1.000 -1.000 -1.000 15 22 5 -1 -1 -1 -1 -1 -1 -1 -1.0 -1.0 0