# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 64.482728 km # Date (UTC) = 2015-12-13T08:35:51.580 # Date (julian) = 2457369.85823587 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.4761 5.0010604e+10 0.032824895 0.031220598 127.83925 26.681549 6499.1283 4.5888618e+10 0.041834695 0.032020364 127.89939 26.552080 6501.7806 4.2207804e+10 0.051090312 0.032820130 127.95953 26.422553 6504.4328 3.8821835e+10 0.060697434 0.033619895 128.01966 26.296860 6507.0850 3.5665338e+10 0.070770226 0.034419661 128.07979 26.171976 6509.7372 3.2780990e+10 0.081450402 0.035219427 128.13992 26.047093 6512.3894 3.0101503e+10 0.092809391 0.036019193 128.20005 25.922210 6515.0416 2.7536257e+10 0.10488484 0.036818959 128.26017 25.795005 6517.6938 2.5092549e+10 0.11770648 0.037618725 128.32031 25.665495 6520.3460 2.2833850e+10 0.13134281 0.038418490 128.37887 25.537552 6522.9982 2.0755697e+10 0.14304575 0.039178642 128.43437 25.412651 6525.6504 1.8888512e+10 0.15005536 0.039707985 128.48988 25.287754 6528.3026 1.7219031e+10 0.15696960 0.041682549 128.54539 25.162870 6530.9548 1.5709227e+10 0.16224021 0.045165431 128.60098 25.037911 6533.6070 1.4347315e+10 0.16790411 0.047777556 128.66110 24.908403 6536.2592 1.3094989e+10 0.17028136 0.048022446 128.72122 24.778894 6538.9114 1.1941906e+10 0.17294038 0.049600505 128.77741 24.653335 6541.5636 1.0876071e+10 0.17346490 0.051143743 128.83292 24.528450 6544.2159 9.8975147e+09 0.17235324 0.051819453 128.88842 24.403555 6546.8681 9.0136897e+09 0.17080001 0.053178800 128.94393 24.278654 6549.5203 8.2227777e+09 0.16833435 0.054496474 128.99944 24.153763 6552.1725 7.5186208e+09 0.16607109 0.055543355 129.05494 24.028879 6554.8247 6.8940171e+09 0.16339043 0.054849686 129.11044 23.903996 6557.4769 6.3428802e+09 0.16053566 0.053567193 129.16595 23.779112 6560.1291 5.8573419e+09 0.15745902 0.052157914 129.22146 23.654228 6562.7813 5.4181092e+09 0.15406747 0.050136468 129.27696 23.529344 6565.4335 5.0220838e+09 0.15108915 0.047826144 129.33246 23.404459 6568.0857 4.6658984e+09 0.14882720 0.045692871 129.38797 23.279558 6570.7379 4.3415441e+09 0.14677125 0.044611838 129.44348 23.154658 6573.3901 4.0473577e+09 0.14444515 0.043344414 129.49899 23.029772 6576.0423 3.7782381e+09 0.14159064 0.041322668 129.55450 22.904889 6578.6945 3.5333779e+09 0.13841449 0.037552855 129.61000 22.780005 6581.3467 3.3076432e+09 0.13537525 0.035491610 129.66551 22.655121 6583.9990 3.1002692e+09 0.13247402 0.034516041 129.71842 22.530237 6586.6512 2.9099633e+09 0.12971993 0.033162879 129.76930 22.405353 6589.3034 2.7410645e+09 0.12674973 0.032444127 129.82202 22.280462 6591.9556 2.5834904e+09 0.12305695 0.028123658 129.87753 22.155561 6594.6078 2.4297409e+09 0.11928930 0.025838882 129.93344 22.026998 6597.2600 2.2828250e+09 0.11518563 0.025640686 129.99068 21.886502 6599.9122 2.1447774e+09 0.11282293 0.024984594 130.04738 21.750895 6602.5644 2.0145009e+09 0.11116106 0.027034998 130.10288 21.626010 6605.2166 1.8979689e+09 0.10955929 0.026846757 130.15768 21.501126 6607.8688 1.7953991e+09 0.10720232 0.023991420 130.20856 21.376242 6610.5210 1.7028741e+09 0.10360192 0.024500799 130.25944 21.251358 6613.1732 1.6147642e+09 0.10221688 0.023637147 130.31033 21.131033 6615.8254 1.5281168e+09 0.10081011 0.023276928 130.36121 21.010759 6618.4776 1.4477229e+09 0.10025479 0.024131469 130.41209 20.886670 6621.1298 1.3687577e+09 0.099555465 0.025046409 130.46297 20.761786 6623.7821 1.2987197e+09 0.097745578 0.024781563 130.51385 20.636903 6626.4343 1.2319005e+09 0.096239499 0.026037620 130.56473 20.512019 6629.0865 1.1718331e+09 0.094642177 0.026093472 130.61561 20.387136 6631.7387 1.1147459e+09 0.092744507 0.026005800 130.66649 20.262252 6634.3909 1.0556728e+09 0.091127683 0.026355355 130.71954 20.133814 6637.0431 9.9881246e+08 0.089472376 0.026140311 130.77678 19.998521 6639.6953 9.4513817e+08 0.088863853 0.025379562 130.83135 19.867589 6642.3475 8.9543092e+08 0.088980436 0.025165916 130.88224 19.742688 6644.9997 8.4801603e+08 0.087782701 0.025451652 130.93312 19.618984 6647.6519 8.0866146e+08 0.086226970 0.026781013 130.98400 19.498725 6650.3041 7.7189058e+08 0.085083570 0.026324858 131.03488 19.378023 6652.9563 7.3560664e+08 0.084318355 0.027513644 131.08576 19.253140 6655.6085 6.9786221e+08 0.082329917 0.027861661 131.13664 19.128257 6658.2607 6.6340694e+08 0.080177115 0.030523498 131.19345 18.993652 6660.9129 6.2888152e+08 0.078256253 0.032455818 131.25056 18.858485 6663.5651 5.9616818e+08 0.076648294 0.032326596 131.29682 18.733584 6666.2174 5.6780260e+08 0.076467432 0.026950949 131.34309 18.608683 6668.8696 5.3929808e+08 0.075387476 0.028240274 131.39327 18.487730 6671.5218 5.1287388e+08 0.075669524 0.026872784 131.44415 18.367472 6674.1740 4.8868832e+08 0.074997641 0.029101550 131.49583 18.233281 6676.8262 4.6670751e+08 0.072616125 0.032246193 131.54786 18.092784 6679.4784 4.4693857e+08 0.072418153 0.029872453 131.59900 17.967803 6682.1306 4.2980182e+08 0.073649149 0.030524322 131.64988 17.847545 6684.7828 4.1233613e+08 0.073936104 0.032693816 131.70146 17.718196 6687.4350 3.9423063e+08 0.072024316 0.034100292 131.75350 17.582903 6690.0872 3.7543437e+08 0.069693011 0.033105869 131.80475 17.454707 6692.7394 3.5828306e+08 0.068695989 0.031906685 131.85564 17.329806 6695.3916 3.4260891e+08 0.068136563 0.029787537 131.90411 17.207325 6698.0438 3.2948045e+08 0.067339074 0.030277983 131.95036 17.087067 6700.6960 3.1626781e+08 0.065261666 0.031183990 131.99869 16.961408 6703.3482 3.0121544e+08 0.064798120 0.034546658 132.05073 16.826115 6706.0005 2.8493903e+08 0.064927908 0.038447192 132.10276 16.690822 6708.6527 2.6841002e+08 0.064452583 0.040754301 132.15479 16.555529 6711.3049 2.5209878e+08 0.062527123 0.041039086 132.20623 16.427988 6713.9571 2.3631027e+08 0.059995391 0.047148148 132.25711 16.307729 6716.6093 2.2320155e+08 0.057879271 0.049298772 132.30840 16.180313 6719.2615 2.1052005e+08 0.055443046 0.051121408 132.36044 16.039817 6721.9137 1.9912201e+08 0.055869270 0.050579199 132.40998 15.908054 6724.5659 1.8965202e+08 0.052433150 0.045201047 132.45624 15.787780 6727.2181 1.8300416e+08 0.049764138 0.040669808 132.50406 15.663448 6729.8703 1.7600531e+08 0.048895735 0.040465343 132.55609 15.528155 6732.5225 1.6848160e+08 0.047259367 0.043836403 132.60813 15.392861 6735.1747 1.5864484e+08 0.047607730 0.049478915 132.66017 15.257568 6737.8269 1.4996643e+08 0.049679616 0.056769775 132.70776 15.128690 6740.4791 1.4311302e+08 0.049394655 0.064868886 132.74939 15.008431 6743.1313 1.3640849e+08 0.045488185 0.071933484 132.79377 14.884194 6745.7836 1.2983252e+08 0.042573437 0.078896285 132.84581 14.748900 6748.4358 1.2475724e+08 0.038461332 0.069309433 132.89785 14.615392 6751.0880 1.1982731e+08 0.035409234 0.073748862 132.94988 14.485302 6753.7402 1.1279556e+08 0.032494054 0.075372615 133.00191 14.353021 6756.3924 1.0609917e+08 0.029564876 0.075176552 133.05395 14.217727 6759.0446 1.0189505e+08 0.029804473 0.075830713 133.10599 14.082424 6761.6968 96383414. 0.032562751 0.078025793 133.15803 13.947111 6764.3490 90618272. 0.036866261 0.079500005 133.20706 13.811810 6767.0012 87702860. 0.037276048 0.081974419 133.25390 13.676517 6769.6534 83234209. 0.031432678 0.086039066 133.30415 13.541224 6772.3056 79484407. 0.026474686 0.092471832 133.35618 13.405931 6774.9578 78237272. 0.021440997 0.098904599 133.40439 13.270637 6777.6100 76261881. 0.016431553 0.10533737 133.45123 13.135344 6780.2622 72667844. 0.011448715 0.11177013 133.50229 13.004280 6782.9144 69839822. 0.0064569534 0.11820290 133.55432 12.874189 6785.5666 68060868. 0.0014649997 0.12463567 133.60172 12.739464 6788.2189 66055745. -0.0035282780 0.13106843 133.64855 12.604172 6790.8711 62430549. -0.0085553984 0.13750120 133.70043 12.468879 6793.5233 61572482. -0.013569373 0.14393397 133.75222 12.333832 6796.1755 59238150. -0.018632523 0.15036673 133.79905 12.203743 6798.8277 56973019. -0.023726065 0.15679950 133.84654 12.072997 6801.4799 53485098. -0.028915983 0.16323227 133.89858 11.937684 6804.1321 50248555. -0.034163405 0.16966503 133.95093 11.799647 6806.7843 49070439. -0.039310945 0.17609780 134.00444 11.650995 6809.4365 46358684. -0.044633154 0.18253057 134.05447 11.509311 6812.0887 46055090. -0.049739859 0.18896334 134.10130 11.373997 6814.7409 45643112. -0.054860334 0.19539610 134.15127 11.241823 6817.3931 45970401. -0.059877593 0.20182887 134.20331 11.111734 6820.0453 44920696. -0.065094004 0.20826164 134.25635 10.964981 6822.6975 43897369. -0.070331710 0.21469440 134.30987 10.810381 6825.3497 42768123. -0.075617507 0.22112717 134.35672 10.680212 6828.0020 40021774. -0.081314957 0.22755994 134.40406 10.548260 6830.6542 38582823. -0.086812632 0.23399270 134.45759 10.393635 6833.3064 38144087. -0.092089496 0.24042547 134.50848 10.248687 6835.9586 38194406. -0.097240994 0.24685824 134.55531 10.118598 6838.6108 37079044. -0.10279898 0.25329100 134.60811 9.9797227 6841.2630 35901552. -0.10847299 0.25972377 134.66758 9.8310460 6843.9152 33479116. -0.11483972 0.26615654 134.72235 9.6776639 6846.5674 31622272. -0.12125782 0.27258930 134.77514 9.5257309 6849.2196 31580395. -0.12690640 0.27902207 134.82197 9.3956408 6851.8718 32287032. -0.13228779 0.28545484 134.87006 9.2620574 6854.5240 33823808. -0.13739799 0.29188761 134.92358 9.1133807 6857.1762 35245801. -0.14291175 0.29832037 134.97710 8.9647040 6859.8284 37056418. -0.14869572 0.30475314 135.03062 8.8160272 6862.4806 37717184. -0.15604067 0.31118591 135.08415 8.6673505 6865.1328 36643756. -0.16648458 0.31761867 135.13683 8.5178207 6867.7851 35422654. -0.18227416 0.32405144 135.18441 8.3631967 6870.4373 35387940. -0.23777859 0.33048421 135.23473 8.2113200 6873.0895 33537872. -0.21190857 0.33691697 135.28825 8.0626433 6875.7417 31347425. -0.16551408 0.34334974 135.34177 7.9139660 6878.3939 30510733. -0.10874695 0.34978251 135.39530 7.7652886