# # 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 = 60.391879 km # Date (UTC) = 2014-12-30T10:04:52.242 # Date (julian) = 2457021.92004910 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.9612 8.3100892e+10 0.030910444 0.030462214 104.74128 31.723704 6496.5281 7.4635942e+10 0.039015748 0.031236260 104.80714 31.595724 6499.0950 6.8115080e+10 0.046831794 0.032010306 104.86981 31.470380 6501.6619 6.2804180e+10 0.054629584 0.032784352 104.93481 31.347347 6504.2288 5.8210448e+10 0.062638328 0.033558398 105.00197 31.226463 6506.7957 5.3936344e+10 0.071047873 0.034332444 105.07008 31.101281 6509.3626 4.9380636e+10 0.079868339 0.035106490 105.14059 30.965303 6511.9296 4.4977000e+10 0.089276776 0.035880536 105.20875 30.833845 6514.4965 4.0930648e+10 0.099455131 0.036654582 105.27142 30.712978 6517.0634 3.7470455e+10 0.11069166 0.037428628 105.33409 30.592110 6519.6303 3.4397009e+10 0.12305214 0.038202674 105.39677 30.471242 6522.1972 3.1533838e+10 0.13594895 0.038968894 105.45944 30.350374 6524.7641 2.8964934e+10 0.14386800 0.039698420 105.52211 30.229506 6527.3310 2.6665730e+10 0.15082736 0.040956809 105.58478 30.108638 6529.8980 2.4407921e+10 0.15760415 0.043666146 105.65214 29.978740 6532.4649 2.2141777e+10 0.16343828 0.047072539 105.72264 29.842763 6535.0318 2.0038981e+10 0.16801540 0.048210510 105.78836 29.713282 6537.5987 1.8186103e+10 0.17096989 0.048967484 105.85104 29.587921 6540.1656 1.6677779e+10 0.17317923 0.050932340 105.91202 29.464260 6542.7325 1.5374431e+10 0.17209212 0.051280344 105.97022 29.343392 6545.2994 1.4137294e+10 0.17040065 0.052458250 106.03019 29.220339 6547.8663 1.2914002e+10 0.16800481 0.053616821 106.10070 29.084361 6550.4333 1.1730466e+10 0.16581591 0.055093845 106.16926 28.950785 6553.0002 1.0657134e+10 0.16380623 0.055334978 106.22745 28.829917 6555.5671 9.7847555e+09 0.16128607 0.054376873 106.28564 28.709050 6558.1340 9.0593031e+09 0.15897797 0.053125117 106.34799 28.592310 6560.7009 8.4189951e+09 0.15592178 0.051642342 106.41067 28.475903 6563.2678 7.8396309e+09 0.15320991 0.049618548 106.47025 28.356411 6565.8347 7.3056709e+09 0.15057029 0.047370534 106.52844 28.235543 6568.4017 6.7923664e+09 0.14887365 0.045402443 106.58997 28.107758 6570.9686 6.2747252e+09 0.14725316 0.044516294 106.65544 27.971780 6573.5355 5.7828458e+09 0.14541955 0.043227767 106.71748 27.842935 6576.1024 5.3612230e+09 0.14310352 0.041253530 106.77567 27.722067 6578.6693 5.0138144e+09 0.14032546 0.037592692 106.83387 27.601199 6581.2362 4.7248252e+09 0.13750869 0.035525076 106.89206 27.480333 6583.8031 4.4524667e+09 0.13493724 0.034615153 106.95027 27.359382 6586.3701 4.1620834e+09 0.13236693 0.033166513 107.01071 27.223399 6588.9370 3.8791739e+09 0.12989700 0.033067027 107.07111 27.087689 6591.5039 3.6207950e+09 0.12661701 0.028633339 107.12931 26.966822 6594.0708 3.4017578e+09 0.12309844 0.026133661 107.18750 26.845954 6596.6377 3.2297782e+09 0.11925127 0.025724374 107.24570 26.728601 6599.2046 3.0748685e+09 0.11669924 0.024942037 107.30390 26.612210 6601.7715 2.9064659e+09 0.11651890 0.027409039 107.36333 26.485018 6604.3384 2.7320847e+09 0.11551706 0.026272236 107.42376 26.349041 6606.9054 2.5548502e+09 0.11508579 0.025877056 107.48293 26.221612 6609.4723 2.3980887e+09 0.11212490 0.023846220 107.54112 26.100744 6612.0392 2.2724022e+09 0.10967252 0.024291470 107.59784 25.981357 6614.6061 2.1652317e+09 0.10878402 0.023522911 107.65156 25.864951 6617.1730 2.0562182e+09 0.10753684 0.023496612 107.70594 25.746618 6619.7399 1.9389490e+09 0.10711478 0.024704447 107.76638 25.610639 6622.3068 1.8237782e+09 0.10598728 0.024676321 107.82606 25.476365 6624.8738 1.7124994e+09 0.10446469 0.025330028 107.87978 25.355497 6627.4407 1.6202845e+09 0.10242846 0.025487035 107.93350 25.234629 6630.0076 1.5454505e+09 0.10101601 0.025928320 107.98722 25.117696 6632.5745 1.4772139e+09 0.098971822 0.026101232 108.04093 25.001305 6635.1414 1.4045685e+09 0.097201635 0.026420994 108.09899 24.872279 6637.7083 1.3281054e+09 0.095550793 0.025814495 108.15942 24.736301 6640.2752 1.2567844e+09 0.095202824 0.025236976 108.21543 24.613230 6642.8422 1.1993382e+09 0.094691872 0.025186159 108.26916 24.496823 6645.4091 1.1481735e+09 0.093071024 0.025643317 108.32574 24.372079 6647.9760 1.0943689e+09 0.091440424 0.026951638 108.38618 24.236101 6650.5429 1.0349225e+09 0.090160756 0.026379521 108.44365 24.108748 6653.1098 9.8093264e+08 0.089284725 0.027581725 108.49737 23.992357 6655.6767 9.3505457e+08 0.087274288 0.027889839 108.55144 23.871921 6658.2436 8.8808043e+08 0.085430655 0.030493170 108.60684 23.735942 6660.8105 8.4107821e+08 0.083904120 0.032362747 108.66187 23.604290 6663.3775 7.9865757e+08 0.082597914 0.032378609 108.71558 23.487900 6665.9444 7.6702935e+08 0.082333379 0.026999737 108.76930 23.371501 6668.5113 7.3898994e+08 0.081306775 0.027923229 108.82966 23.240736 6671.0782 7.0825817e+08 0.081127634 0.026866463 108.89004 23.109829 6673.6451 6.7375479e+08 0.080523362 0.028424037 108.93933 22.988924 6676.2120 6.4482235e+08 0.078027959 0.031850376 108.98857 22.868056 6678.7789 6.2081100e+08 0.076856617 0.030415623 109.04254 22.739452 6681.3459 5.9557081e+08 0.077832782 0.029922695 109.09794 22.608510 6683.9128 5.6666499e+08 0.078205038 0.032526257 109.15202 22.488950 6686.4797 5.3953605e+08 0.077106735 0.034040172 109.20574 22.372559 6689.0466 5.1996274e+08 0.073677172 0.033974078 109.26038 22.248187 6691.6135 4.9963319e+08 0.072468031 0.032856515 109.31578 22.117245 6694.1804 4.7745595e+08 0.071277841 0.031008151 109.37118 21.983469 6696.7473 4.5047065e+08 0.070899148 0.029986290 109.42657 21.847491 6699.3143 4.2755182e+08 0.069308268 0.031300467 109.47842 21.722810 6701.8812 4.1117725e+08 0.067120642 0.032702367 109.52767 21.606404 6704.4481 3.9590182e+08 0.067298846 0.036397584 109.57904 21.485002 6707.0150 3.8125548e+08 0.066829010 0.040184678 109.63443 21.354060 6709.5819 3.6470441e+08 0.065797352 0.040762422 109.68983 21.223117 6712.1488 3.4694783e+08 0.063368125 0.042106269 109.74523 21.092174 6714.7157 3.3047012e+08 0.061063107 0.047357217 109.80063 20.961232 6717.2826 3.1330228e+08 0.058856927 0.049856785 109.85603 20.830290 6719.8496 2.9687259e+08 0.057270810 0.050562694 109.90905 20.704976 6722.4165 2.8688035e+08 0.057172213 0.050090332 109.95829 20.588585 6724.9834 2.7790751e+08 0.052763530 0.041714734 110.00770 20.469968 6727.5503 2.7140203e+08 0.051229756 0.040227226 110.05807 20.339026 6730.1172 2.6226123e+08 0.049996959 0.040539620 110.10927 20.208084 6732.6841 2.4955517e+08 0.048422921 0.043866155 110.16467 20.077141 6735.2510 2.3757673e+08 0.048714885 0.049559933 110.22007 19.946194 6737.8180 2.2517240e+08 0.050583298 0.056741187 110.27548 19.815233 6740.3849 2.1502197e+08 0.050275405 0.064707847 110.32989 19.684275 6742.9518 2.0921920e+08 0.046568192 0.070929953 110.38026 19.553334 6745.5187 2.0246917e+08 0.043156224 0.078784943 110.43168 19.422392 6748.0856 1.9412655e+08 0.038945417 0.067467304 110.48708 19.291450 6750.6525 1.8397422e+08 0.036158916 0.073118344 110.54134 19.160508 6753.2194 1.7349529e+08 0.033232553 0.073687433 110.59170 19.029566 6755.7864 1.6659752e+08 0.030636212 0.074260580 110.64327 18.898624 6758.3533 1.5970609e+08 0.029857613 0.074452350 110.69867 18.767681 6760.9202 1.5403323e+08 0.030313336 0.077816011 110.75279 18.636738 6763.4871 1.4818105e+08 0.036068750 0.077921216 110.80315 18.505796 6766.0540 1.4384150e+08 0.038259312 0.079835911 110.85351 18.376205 6768.6209 1.3906943e+08 0.033908441 0.083090243 110.90388 18.250300 6771.1878 1.3199316e+08 0.029015379 0.089760720 110.95424 18.122970 6773.7547 1.2634306e+08 0.024413012 0.095986614 111.00461 17.992027 6776.3217 1.2003717e+08 0.019842471 0.10221251 111.05882 17.855525 6778.8886 1.1507989e+08 0.015258365 0.10843840 111.12213 17.705872 6781.4555 1.1001899e+08 0.010677489 0.11466430 111.17820 17.566695 6784.0224 1.0548150e+08 0.0060907127 0.12089019 111.22856 17.435752 6786.5893 1.0356086e+08 0.0014783260 0.12711608 111.27892 17.307691 6789.1562 1.0007042e+08 -0.0031156184 0.13334198 111.32929 17.181767 6791.7231 96387626. -0.0077057732 0.13956787 111.37966 17.052888 6794.2901 91997520. -0.012289579 0.14579377 111.43002 16.921947 6796.8570 85924134. -0.016857085 0.15201966 111.48472 16.783190 6799.4239 82495206. -0.021439222 0.15824555 111.54228 16.639295 6801.9908 79718432. -0.026023513 0.16447145 111.59361 16.506615 6804.5577 77680722. -0.030607728 0.17069734 111.64397 16.375672 6807.1246 77610149. -0.035193513 0.17692324 111.69560 16.228260 6809.6915 71848524. -0.039763428 0.18314913 111.74720 16.082003 6812.2585 70078985. -0.044342166 0.18937503 111.79756 15.956097 6814.8254 68421742. -0.048918504 0.19560092 111.84905 15.826455 6817.3923 65869512. -0.053497163 0.20182681 111.90661 15.676804 6819.9592 65142539. -0.058071886 0.20805271 111.96115 15.537125 6822.5261 60808441. -0.062681025 0.21427860 112.01151 15.411219 6825.0930 58337912. -0.067278802 0.22050450 112.06250 15.277499 6827.6599 58762811. -0.071852785 0.22673039 112.11430 15.133603 6830.2268 57605383. -0.076471184 0.23295628 112.17012 14.985695 6832.7938 53404823. -0.081214181 0.23918218 112.22768 14.836044 6835.3607 49179263. -0.086129450 0.24540807 112.27833 14.709179 6837.9276 44384412. -0.091399864 0.25163397 112.32869 14.583273 6840.4945 44227708. -0.097596144 0.25785986 112.38046 14.434239 6843.0614 44478994. -0.11163996 0.26408575 112.43362 14.285950 6845.6283 43808889. -0.10815517 0.27031165 112.49118 14.142055 6848.1952 41966676. -0.094926001 0.27653754 112.54586 13.998159