# 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 2026 02 09 34373 34373.5 2625 12 2.333 1.333 1.333 1.333 2.000 1.667 0.667 2.333 9 5 5 5 7 6 3 9 6 115 144.2 140.4 0 2026 02 10 34374 34374.5 2625 13 1.333 0.000 0.667 2.667 2.000 1.333 2.667 4.333 5 0 3 12 7 5 12 32 10 117 142.1 138.4 0 2026 02 11 34375 34375.5 2625 14 4.000 3.000 2.667 3.000 2.333 3.333 3.333 3.667 27 15 12 15 9 18 18 22 17 99 128.9 125.6 0 2026 02 12 34376 34376.5 2625 15 2.333 2.333 2.000 2.333 1.000 2.333 1.000 2.000 9 9 7 9 4 9 4 7 7 80 129.0 125.7 0 2026 02 13 34377 34377.5 2625 16 4.000 2.333 2.000 2.333 1.667 2.667 2.333 4.333 27 9 7 9 6 12 9 32 14 70 117.3 114.4 0 2026 02 14 34378 34378.5 2625 17 3.000 2.667 0.333 0.333 0.333 1.000 3.000 4.667 15 12 2 2 2 4 15 39 11 87 116.9 114.0 0 2026 02 15 34379 34379.5 2625 18 5.333 5.000 3.333 3.000 2.667 3.000 3.000 4.000 56 48 18 15 12 15 15 27 26 73 117.5 114.7 0 2026 02 16 34380 34380.5 2625 19 4.333 4.333 4.333 3.000 1.667 3.667 5.667 2.667 32 32 32 15 6 22 67 12 27 78 117.9 115.1 0 2026 02 17 34381 34381.5 2625 20 2.000 2.000 2.333 2.667 2.333 3.000 2.000 2.667 7 7 9 12 9 15 7 12 10 69 121.5 118.7 0 2026 02 18 34382 34382.5 2625 21 2.000 3.333 2.000 2.000 2.333 2.000 1.667 2.333 7 18 7 7 9 7 6 9 9 43 118.7 116.0 0 2026 02 19 34383 34383.5 2625 22 3.000 3.000 3.000 2.000 3.000 1.000 0.667 1.333 15 15 15 7 15 4 3 5 10 43 116.4 113.8 0 2026 02 20 34384 34384.5 2625 23 1.000 2.333 2.000 2.000 2.333 2.333 2.667 3.667 4 9 7 7 9 9 12 22 10 39 111.1 108.7 0 2026 02 21 34385 34385.5 2625 24 4.000 3.333 2.667 1.667 1.000 1.333 2.667 4.333 27 18 12 6 4 5 12 32 14 14 109.9 107.5 0 2026 02 22 34386 34386.5 2625 25 4.000 4.667 5.000 4.000 4.333 3.667 4.000 5.333 27 39 48 27 32 22 27 56 35 -1 110.1 107.8 0 2026 02 23 34387 34387.5 2625 26 3.333 5.000 3.000 3.667 3.333 2.000 4.333 4.000 18 48 15 22 18 7 32 27 23 8 107.9 105.7 0 2026 02 24 34388 34388.5 2625 27 2.333 3.667 3.000 2.667 3.333 2.000 3.333 2.667 9 22 15 12 18 7 18 12 14 6 119.6 117.2 0 2026 02 25 34389 34389.5 2626 1 3.667 2.667 2.333 3.000 3.000 2.667 2.333 3.667 22 12 9 15 15 12 9 22 14 15 124.7 122.2 0 2026 02 26 34390 34390.5 2626 2 3.667 4.000 3.667 3.333 2.667 2.000 3.333 2.333 22 27 22 18 12 7 18 9 17 34 129.8 127.3 0 2026 02 27 34391 34391.5 2626 3 3.000 1.667 1.667 2.000 2.333 3.000 1.333 2.333 15 6 6 7 9 15 5 9 9 46 138.5 135.9 0 2026 02 28 34392 34392.5 2626 4 2.000 2.667 1.333 1.333 2.000 1.667 2.000 2.333 7 12 5 5 7 6 7 9 7 58 140.7 138.1 0 2026 03 01 34393 34393.5 2626 5 2.667 2.667 2.333 2.000 1.333 0.667 1.667 1.333 12 12 9 7 5 3 6 5 7 80 147.0 144.4 0 2026 03 02 34394 34394.5 2626 6 1.333 0.667 1.000 0.333 1.667 1.000 0.667 1.333 5 3 4 2 6 4 3 5 4 81 147.6 145.0 0 2026 03 03 34395 34395.5 2626 7 0.667 2.667 2.000 2.333 2.000 3.333 3.333 5.000 3 12 7 9 7 18 18 48 15 86 143.5 141.1 0 2026 03 04 34396 34396.5 2626 8 2.333 3.000 1.667 2.000 0.667 0.667 1.333 1.667 9 15 6 7 3 3 5 6 7 68 141.2 138.8 0 2026 03 05 34397 34397.5 2626 9 1.667 0.000 1.333 0.333 1.000 0.000 0.000 0.667 6 0 5 2 4 0 0 3 2 91 146.2 143.8 0 2026 03 06 34398 34398.5 2626 10 1.000 2.333 2.000 1.000 1.667 1.000 1.000 3.333 4 9 7 4 6 4 4 18 7 88 142.8 140.6 0 2026 03 07 34399 34399.5 2626 11 4.000 3.333 3.000 2.000 1.667 3.000 4.000 4.000 27 18 15 7 6 15 27 27 18 82 135.4 133.3 0 2026 03 08 34400 34400.5 2626 12 4.667 3.667 4.000 2.667 3.667 4.000 3.000 2.333 39 22 27 12 22 27 15 9 22 78 134.5 132.6 0 2026 03 09 34401 34401.5 2626 13 2.000 1.333 1.000 1.333 1.667 1.667 1.667 2.333 7 5 4 5 6 6 6 9 6 86 128.4 126.5 0 2026 03 10 34402 34402.5 2626 14 3.333 -1.000 -1.000 -1.000 -1.000 -1.000 -1.000 -1.000 18 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1.0 -1.0 0