# # 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 = 58.678679 km # Date (UTC) = 2014-12-31T09:13:13.020 # Date (julian) = 2457022.88417847 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.5947 5.9265801e+10 0.030902208 0.031256338 117.65225 31.939127 6498.8874 5.6025997e+10 0.038724300 0.031947698 117.71284 31.825236 6501.1801 5.2341376e+10 0.046762516 0.032639057 117.77581 31.703783 6503.4728 4.8577924e+10 0.055093606 0.033330416 117.83879 31.582330 6505.7655 4.5050281e+10 0.063844497 0.034021775 117.89882 31.474115 6508.0582 4.2029604e+10 0.073193533 0.034713135 117.95880 31.366158 6510.3509 3.9510630e+10 0.083270299 0.035404494 118.01686 31.258203 6512.6436 3.7222257e+10 0.094066609 0.036095853 118.07283 31.150247 6514.9363 3.4998158e+10 0.10551345 0.036787212 118.12881 31.042292 6517.2290 3.2541875e+10 0.11742727 0.037478571 118.19165 30.921107 6519.5217 2.9975709e+10 0.12980752 0.038169931 118.25463 30.799636 6521.8144 2.7476816e+10 0.14271667 0.038861290 118.31232 30.685360 6524.1071 2.5412691e+10 0.15031580 0.039465017 118.36830 30.573405 6526.3998 2.3710220e+10 0.15706924 0.040087263 118.42428 30.462470 6528.6925 2.2140986e+10 0.16335448 0.041991873 118.48026 30.354513 6530.9852 2.0610795e+10 0.16823548 0.045208018 118.53623 30.246557 6533.2779 1.8967111e+10 0.17331947 0.047637706 118.59749 30.128425 6535.5707 1.7287207e+10 0.17495286 0.047976750 118.66046 30.006973 6537.8634 1.5690730e+10 0.17641489 0.049092260 118.71972 29.892686 6540.1561 1.4302160e+10 0.17646323 0.050927830 118.77570 29.784730 6542.4488 1.3147376e+10 0.17400110 0.051172615 118.83156 29.676773 6544.7415 1.2160396e+10 0.17193401 0.052245846 118.88354 29.568802 6547.0342 1.1266944e+10 0.16969454 0.053300362 118.93553 29.460832 6549.3269 1.0416588e+10 0.16728357 0.054299402 118.99333 29.345726 6551.6196 9.5709188e+09 0.16559156 0.055453237 119.05630 29.224273 6553.9123 8.7427584e+09 0.16331661 0.054876468 119.11591 29.106952 6556.2050 8.0070916e+09 0.16119331 0.053982987 119.16789 28.998997 6558.4977 7.3870426e+09 0.15913004 0.052815198 119.21987 28.891041 6560.7904 6.8721198e+09 0.15633550 0.051561651 119.27507 28.783085 6563.0831 6.4354545e+09 0.15389937 0.049832220 119.33105 28.675128 6565.3758 6.0211859e+09 0.15148703 0.047891646 119.38778 28.563068 6567.6685 5.6160343e+09 0.14958481 0.046051930 119.44626 28.441615 6569.9612 5.2157739e+09 0.14809491 0.044914986 119.50421 28.321254 6572.2539 4.8442076e+09 0.14625434 0.044084732 119.55620 28.213284 6574.5466 4.5402993e+09 0.14383005 0.042592454 119.60818 28.105313 6576.8393 4.2826211e+09 0.14129444 0.040405285 119.66016 27.999671 6579.1321 4.0566160e+09 0.13802098 0.036997901 119.71214 27.895713 6581.4248 3.8426392e+09 0.13525913 0.035467986 119.76464 27.790368 6583.7175 3.6216049e+09 0.13256216 0.034658518 119.82312 27.668916 6586.0102 3.4018038e+09 0.12963098 0.033171165 119.88159 27.547464 6588.3029 3.1923864e+09 0.12743159 0.033278784 119.93108 27.437568 6590.5956 3.0149583e+09 0.12466384 0.029954192 119.97906 27.329611 6592.8883 2.8649408e+09 0.12232852 0.027210728 120.02847 27.221650 6595.1810 2.7399481e+09 0.12000340 0.025642341 120.08045 27.113679 6597.4737 2.6217694e+09 0.11772498 0.025573246 120.13244 27.005709 6599.7664 2.4932298e+09 0.11682455 0.024975825 120.18997 26.886217 6602.0591 2.3558753e+09 0.11669036 0.027466192 120.24844 26.764764 6604.3518 2.2196120e+09 0.11565653 0.026280172 120.30029 26.654358 6606.6445 2.1016941e+09 0.11516560 0.026345783 120.34827 26.550400 6608.9372 2.0074931e+09 0.11226606 0.023707591 120.39678 26.445921 6611.2299 1.9251266e+09 0.10938662 0.024811828 120.44876 26.337965 6613.5226 1.8501329e+09 0.10834516 0.023765346 120.50073 26.230010 6615.8153 1.7713156e+09 0.10679877 0.023276617 120.55397 26.113559 6618.1080 1.6810665e+09 0.10614544 0.023852384 120.60795 25.992106 6620.4008 1.5917492e+09 0.10539668 0.024896339 120.65950 25.877756 6622.6935 1.5053856e+09 0.10398991 0.024573418 120.70749 25.773784 6624.9862 1.4333686e+09 0.10238457 0.025390197 120.75547 25.669813 6627.2789 1.3640139e+09 0.10017997 0.025424533 120.80888 25.550010 6629.5716 1.2979256e+09 0.098828811 0.026005763 120.86286 25.428557 6631.8643 1.2382612e+09 0.096786998 0.026018559 120.91275 25.316317 6634.1570 1.1832076e+09 0.094970664 0.026338294 120.96073 25.208361 6636.4497 1.1295057e+09 0.093115594 0.026375120 121.00980 25.098772 6638.7424 1.0688539e+09 0.091755470 0.025639298 121.06378 24.981817 6641.0351 1.0122850e+09 0.092200169 0.025148420 121.11776 24.864862 6643.3278 9.6404952e+08 0.091671379 0.025242113 121.16599 24.756532 6645.6205 9.2701697e+08 0.090705693 0.025742371 121.21397 24.648576 6647.9132 8.8879473e+08 0.089804277 0.026918592 121.26469 24.536504 6650.2059 8.4904313e+08 0.089171420 0.026302378 121.31867 24.419549 6652.4986 8.0692301e+08 0.088818628 0.027387713 121.37125 24.304700 6654.7913 7.6617172e+08 0.087924285 0.027699111 121.41923 24.196730 6657.0840 7.3375814e+08 0.086004451 0.028998592 121.46722 24.088759 6659.3767 6.9705719e+08 0.084556100 0.031756010 121.51630 23.974198 6661.6694 6.6359399e+08 0.083172786 0.032875914 121.56578 23.857243 6663.9622 6.3245668e+08 0.081752361 0.032216576 121.61449 23.746924 6666.2549 6.0399701e+08 0.081804224 0.026958258 121.66247 23.642967 6668.5476 5.8202440e+08 0.080679600 0.027955330 121.71051 23.538842 6670.8403 5.6320064e+08 0.080349175 0.026939349 121.76449 23.417390 6673.1330 5.4291318e+08 0.079789475 0.027658092 121.81847 23.295937 6675.4257 5.2110418e+08 0.077760234 0.030613692 121.86459 23.188243 6677.7184 4.9737841e+08 0.076036707 0.031336957 121.90857 23.084286 6680.0111 4.7408069e+08 0.076051189 0.029443811 121.95413 22.976618 6682.3038 4.5514745e+08 0.076624287 0.030656655 122.00361 22.859664 6684.5965 4.3879508e+08 0.076477435 0.032684362 122.05337 22.742428 6686.8892 4.2003577e+08 0.074802417 0.034278439 122.10735 22.620956 6689.1819 3.9838128e+08 0.071815715 0.033852273 122.16134 22.499485 6691.4746 3.8106096e+08 0.070735429 0.032889284 122.20693 22.392718 6693.7673 3.6193329e+08 0.069749390 0.031340849 122.25091 22.288760 6696.0600 3.4918070e+08 0.069565975 0.029700726 122.29675 22.180402 6698.3527 3.4098986e+08 0.068582074 0.030701986 122.34623 22.063447 6700.6454 3.2717671e+08 0.066821029 0.031146459 122.39571 21.946493 6702.9381 3.1683728e+08 0.066232195 0.033625843 122.44519 21.829540 6705.2309 3.0281175e+08 0.066453273 0.037079012 122.49468 21.712586 6707.5236 2.8980920e+08 0.066147249 0.040111827 122.54416 21.595631 6709.8163 2.8057813e+08 0.065170361 0.040613361 122.59364 21.478676 6712.1090 2.6823868e+08 0.063023198 0.042032273 122.63944 21.367744 6714.4017 2.5893286e+08 0.060866124 0.047333606 122.68342 21.259788 6716.6944 2.4957209e+08 0.058893459 0.049424114 122.72833 21.150315 6718.9871 2.4347923e+08 0.056337022 0.051349721 122.77782 21.033343 6721.2798 2.3389056e+08 0.056797134 0.050388200 122.82731 20.916371 6723.5725 2.2379320e+08 0.055258586 0.049688233 122.87679 20.799416 6725.8652 2.1448485e+08 0.051137011 0.041035571 122.92627 20.682461 6728.1579 2.0222761e+08 0.050398969 0.039851902 122.97250 20.565507 6730.4506 1.9687960e+08 0.048823891 0.040996743 123.01748 20.448552 6732.7433 1.9024139e+08 0.047372636 0.043877051 123.06471 20.331598 6735.0360 1.8172498e+08 0.047415714 0.049331671 123.11419 20.214643 6737.3287 1.7323196e+08 0.049149919 0.055182729 123.16367 20.097688 6739.6214 1.6364986e+08 0.049507465 0.063587065 123.21315 19.980735 6741.9141 1.5857646e+08 0.047479912 0.068365863 123.26239 19.863781 6744.2068 1.5472119e+08 0.042741185 0.077953399 123.30738 19.746827 6746.4995 1.5071922e+08 0.039879926 0.073179482 123.35236 19.629872 6748.7923 1.4445881e+08 0.038061052 0.071184968 123.40107 19.512918 6751.0850 1.4117004e+08 0.035092351 0.073747592 123.45056 19.395964 6753.3777 1.3792028e+08 0.032415210 0.074199477 123.49731 19.279009 6755.6704 1.3133573e+08 0.030250873 0.074311431 123.54229 19.162054 6757.9631 1.2552722e+08 0.029325985 0.073817383 123.58727 19.046826 6760.2558 1.1798002e+08 0.030135368 0.076549031 123.63225 18.934370 6762.5485 1.1292519e+08 0.034730188 0.077166094 123.67796 18.821188 6764.8412 1.0986704e+08 0.037664906 0.079523585 123.72745 18.704216 6767.1339 1.0381975e+08 0.037606986 0.081825837 123.77693 18.587244 6769.4266 94347296. 0.032816606 0.085488956 123.82219 18.470288 6771.7193 89622544. 0.028819606 0.091049775 123.86718 18.353334 6774.0120 86365607. 0.024792664 0.096610593 123.91216 18.236380 6776.3047 88582240. 0.020608319 0.10217141 123.95715 18.119425 6778.5974 90419648. 0.016442556 0.10773223 124.00529 17.994251 6780.8901 83697424. 0.012512911 0.11329305 124.05670 17.860585 6783.1828 80468321. 0.0084994642 0.11885387 124.10705 17.738515 6785.4755 74953032. 0.0045714997 0.12441469 124.15654 17.626059 6787.7682 75951714. 0.00043457198 0.12997550 124.20456 17.512147 6790.0609 75658597. -0.0036478257 0.13553632 124.24954 17.395194 6792.3537 76256653. -0.0077448139 0.14109714 124.29517 17.276560 6794.6464 75658360. -0.011778601 0.14665796 124.34658 17.142895 6796.9391 72474957. -0.015714092 0.15221878 124.39699 17.012526 6799.2318 71024033. -0.019683762 0.15777960 124.44197 16.900070 6801.5245 63245457. -0.023413865 0.16334042 124.48695 16.787614 6803.8172 62251969. -0.027376475 0.16890123 124.52774 16.670963 6806.1099 60866330. -0.031314428 0.17446205 124.56823 16.554008 6808.4026 60088464. -0.035265013 0.18002287 124.61646 16.428848 6810.6953 59688907. -0.039218022 0.18558369 124.66787 16.300324 6812.9880 56067686. -0.042993489 0.19114451 124.71437 16.180640 6815.2807 53840056. -0.046781351 0.19670533 124.75935 16.063686 6817.5734 48826107. -0.050286645 0.20226615 124.80781 15.937692 6819.8661 45871645. -0.053756781 0.20782696 124.85922 15.804027 6822.1588 44171227. -0.057006503 0.21338778 124.91063 15.673425 6824.4515 44317210. -0.060283147 0.21894860 124.96204 15.544901 6826.7442 44020636. -0.058825008 0.22450942 125.00634 15.426831 6829.0369 42892897. -0.067737523 0.23007024 125.04683 15.314374 6831.3296 43447298. -0.082321124 0.23563106 125.09198 15.192849