# # 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 = 60.725481 km # Date (UTC) = 2013-12-16T10:17:56.064 # Date (julian) = 2456642.92912112 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.8802 6.8659933e+10 0.037012686 0.031643992 100.80904 29.745419 6500.4080 6.3015589e+10 0.045950253 0.032406226 100.87077 29.626379 6502.9357 5.7162018e+10 0.055056392 0.033168460 100.93394 29.499516 6505.4634 5.1402718e+10 0.064370236 0.033930695 100.99841 29.365612 6507.9912 4.6149586e+10 0.074006715 0.034692929 101.06147 29.239297 6510.5189 4.1812045e+10 0.084190990 0.035455164 101.12319 29.120275 6513.0467 3.8365307e+10 0.095104083 0.036217398 101.18490 29.001252 6515.5744 3.5412848e+10 0.10673519 0.036979632 101.24662 28.882228 6518.1022 3.2673386e+10 0.11904879 0.037741867 101.30834 28.763205 6520.6299 3.0198319e+10 0.13209983 0.038504101 101.36576 28.644181 6523.1576 2.7922098e+10 0.14264243 0.039218184 101.42307 28.525158 6525.6854 2.5823305e+10 0.14915348 0.039703993 101.48349 28.406123 6528.2131 2.3837183e+10 0.15562603 0.041611560 101.54522 28.287084 6530.7409 2.1916769e+10 0.16056324 0.044865907 101.60501 28.168052 6533.2686 2.0115064e+10 0.16561894 0.047633741 101.66232 28.049029 6535.7964 1.8447378e+10 0.16754655 0.047878839 101.71963 27.930006 6538.3241 1.6928433e+10 0.17054932 0.049314503 101.77693 27.810983 6540.8518 1.5552888e+10 0.17151343 0.051256537 101.83424 27.691959 6543.3796 1.4292019e+10 0.17097501 0.051481519 101.89155 27.572936 6545.9073 1.3110124e+10 0.16909773 0.052463696 101.94886 27.453912 6548.4351 1.2026785e+10 0.16748703 0.053797575 102.00617 27.334879 6550.9628 1.1075584e+10 0.16512921 0.055226442 102.06348 27.215840 6553.4906 1.0233910e+10 0.16326266 0.055088466 102.12080 27.096806 6556.0183 9.4888734e+09 0.16060753 0.054010434 102.17811 26.977784 6558.5461 8.7942528e+09 0.15841162 0.052774001 102.23542 26.858761 6561.0738 8.1496519e+09 0.15538172 0.051336316 102.29272 26.739737 6563.6015 7.5673465e+09 0.15281919 0.049232525 102.35003 26.620713 6566.1293 7.0530402e+09 0.15044505 0.047109749 102.40733 26.501690 6568.6570 6.5936828e+09 0.14882354 0.045167699 102.46464 26.382667 6571.1848 6.1792278e+09 0.14736780 0.044452811 102.51949 26.263634 6573.7125 5.7873875e+09 0.14538556 0.043085707 102.57240 26.144595 6576.2403 5.4065113e+09 0.14323391 0.041094853 102.62658 26.025561 6578.7680 5.0565297e+09 0.14054612 0.037436853 102.68389 25.906538 6581.2957 4.7336658e+09 0.13809039 0.035507054 102.74110 25.787607 6583.8235 4.4422971e+09 0.13583379 0.034604854 102.79400 25.672992 6586.3512 4.1742210e+09 0.13351188 0.033166756 102.84690 25.558377 6588.8790 3.9243120e+09 0.13126127 0.033086394 102.90312 25.440445 6591.4067 3.6972600e+09 0.12815081 0.028742977 102.96043 25.321421 6593.9345 3.4856848e+09 0.12499027 0.026233456 103.01560 25.202390 6596.4622 3.2891329e+09 0.12128420 0.025725172 103.06851 25.083351 6598.9899 3.1101087e+09 0.11832919 0.024934529 103.12142 24.964315 6601.5177 2.9510434e+09 0.11776999 0.027289493 103.17432 24.845291 6604.0454 2.7998802e+09 0.11608266 0.026098254 103.22722 24.726268 6606.5732 2.6445708e+09 0.11573508 0.026473980 103.28638 24.597846 6609.1009 2.4855685e+09 0.11293788 0.023735910 103.34589 24.468902 6611.6287 2.3354991e+09 0.11043688 0.024557553 103.39925 24.349194 6614.1564 2.2003666e+09 0.10971602 0.023832733 103.45215 24.230171 6616.6842 2.0910787e+09 0.10844571 0.023389677 103.50505 24.114059 6619.2119 1.9916305e+09 0.10793420 0.024577041 103.55795 23.999428 6621.7396 1.8984574e+09 0.10704689 0.024844290 103.61086 23.883066 6624.2674 1.8142392e+09 0.10515420 0.025005439 103.66376 23.764042 6626.7951 1.7281555e+09 0.10335638 0.025577838 103.71666 23.645573 6629.3229 1.6478277e+09 0.10198946 0.026050729 103.76956 23.530958 6631.8506 1.5675109e+09 0.10006490 0.026017171 103.82246 23.416343 6634.3784 1.4924900e+09 0.098372192 0.026354442 103.87158 23.297949 6636.9061 1.4270109e+09 0.096550128 0.026197877 103.92007 23.178925 6639.4338 1.3599951e+09 0.095547065 0.025473009 103.97505 23.054059 6641.9616 1.2925603e+09 0.095761840 0.025151566 104.03456 22.925115 6644.4893 1.2234655e+09 0.094443996 0.025396492 104.09029 22.801843 6647.0171 1.1569973e+09 0.092952782 0.026446770 104.14320 22.682803 6649.5448 1.1041312e+09 0.091487691 0.026882683 104.19476 22.565111 6652.0726 1.0578167e+09 0.090505369 0.027270485 104.24325 22.450496 6654.6003 1.0179912e+09 0.089109704 0.027780490 104.29174 22.335723 6657.1280 9.8016902e+08 0.086743045 0.029049643 104.34023 22.216699 6659.6558 9.3973153e+08 0.085098416 0.031697800 104.38873 22.097676 6662.1835 8.9585001e+08 0.083663855 0.032941297 104.44567 21.971038 6664.7113 8.5263140e+08 0.082850225 0.029603549 104.50518 21.842093 6667.2390 8.1070307e+08 0.082636601 0.027191255 104.55642 21.723900 6669.7668 7.7251676e+08 0.081867514 0.027568181 104.60492 21.609270 6672.2945 7.3801506e+08 0.081725340 0.027050302 104.65342 21.494647 6674.8223 7.0655886e+08 0.080388228 0.029648415 104.70191 21.380033 6677.3500 6.7988795e+08 0.078118381 0.031860662 104.75040 21.264474 6679.8777 6.5587877e+08 0.078089633 0.029542447 104.79889 21.145450 6682.4055 6.3362836e+08 0.078878296 0.030734347 104.84738 21.026427 6684.9332 6.0659751e+08 0.078861379 0.032701449 104.90161 20.898018 6687.4610 5.7767738e+08 0.076731177 0.034085813 104.95616 20.769073 6689.9887 5.5103035e+08 0.074250862 0.033126023 105.00508 20.653450 6692.5165 5.3075245e+08 0.072981927 0.032165598 105.05357 20.538835 6695.0442 5.0832497e+08 0.072206030 0.029851355 105.10607 20.414733 6697.5719 4.8282592e+08 0.071422782 0.030163646 105.16064 20.285770 6700.0997 4.5909008e+08 0.069601535 0.030741660 105.21128 20.166062 6702.6274 4.3802943e+08 0.068194799 0.033377737 105.25977 20.051447 6705.1552 4.2326420e+08 0.068283843 0.036944475 105.31055 19.931436 6707.6829 4.0558115e+08 0.067740337 0.040088999 105.36510 19.802492 6710.2107 3.8723091e+08 0.066335145 0.040537729 105.41747 19.678709 6712.7384 3.7045908e+08 0.063908770 0.043200930 105.46596 19.564094 6715.2661 3.5692108e+08 0.061622817 0.047650797 105.51455 19.448163 6717.7939 3.4170731e+08 0.059354052 0.049825163 105.56415 19.319220 6720.3216 3.2628455e+08 0.058303126 0.050382499 105.61366 19.191356 6722.8494 3.1265195e+08 0.057771047 0.049555151 105.66216 19.076726 6725.3771 2.9932065e+08 0.053349173 0.041340450 105.71065 18.962096 6727.9049 2.8742249e+08 0.052250378 0.039754846 105.76004 18.835911 6730.4326 2.7315454e+08 0.050792879 0.040972063 105.80963 18.706967 6732.9604 2.5806119e+08 0.049404373 0.043917007 105.86314 18.578022 6735.4881 2.4559714e+08 0.049975500 0.049811583 105.91770 18.449077 6738.0158 2.3554795e+08 0.051663517 0.057408296 105.96414 18.331231 6740.5436 2.2751006e+08 0.051066306 0.064978981 106.00822 18.216616 6743.0713 2.2506476e+08 0.047094439 0.071528609 106.05760 18.094750 6745.5991 2.1923937e+08 0.043866992 0.078818731 106.11216 17.965806 6748.1268 2.1218698e+08 0.039590926 0.067684071 106.16428 17.836862 6750.6546 2.0067246e+08 0.036759551 0.073121814 106.21388 17.707918 6753.1823 1.9002130e+08 0.033783135 0.073567248 106.26086 17.587841 6755.7100 1.8412650e+08 0.031161061 0.074294036 106.30494 17.477634 6758.2378 1.7934029e+08 0.030112290 0.074208156 106.35016 17.363585 6760.7655 1.7417076e+08 0.030498092 0.077521104 106.39976 17.234622 6763.2933 1.6723315e+08 0.035906097 0.077330938 106.45030 17.105663 6765.8210 1.6071538e+08 0.038190653 0.079681073 106.50485 16.976720 6768.3488 1.5111366e+08 0.034538798 0.082110952 106.55855 16.847776 6770.8765 1.4525253e+08 0.029389526 0.089005611 106.60814 16.718832 6773.4042 1.3898671e+08 0.024730803 0.095136500 106.65774 16.590662 6775.9320 1.3273714e+08 0.020080844 0.10126739 106.70733 16.466677 6778.4597 1.2701944e+08 0.015421133 0.10739828 106.75692 16.342000 6780.9875 1.2113200e+08 0.010750443 0.11352917 106.80652 16.213056 6783.5152 1.1767854e+08 0.0060718091 0.11966006 106.85611 16.084722 6786.0430 1.1789314e+08 0.0013960772 0.12579095 106.90570 15.960738 6788.5707 1.1467789e+08 -0.0032799574 0.13192184 106.95477 15.836223 6791.0985 1.1017641e+08 -0.0079651071 0.13805273 106.99940 15.707279 6793.6262 1.0506029e+08 -0.012658938 0.14418361 107.04449 15.578335 6796.1539 98696007. -0.017378251 0.15031450 107.09408 15.449391 6798.6817 95851634. -0.022057798 0.15644539 107.14367 15.320813 6801.2094 92332780. -0.026749943 0.16257628 107.19327 15.196810 6803.7372 89181362. -0.031436697 0.16870717 107.24329 15.071782 6806.2649 85512860. -0.036143009 0.17483806 107.29995 14.930105 6808.7927 81641321. -0.040868757 0.18096895 107.35455 14.792159 6811.3204 78465648. -0.045587640 0.18709984 107.40416 14.663196 6813.8481 75903222. -0.050300929 0.19323073 107.45238 14.535614 6816.3759 72042888. -0.055102416 0.19936162 107.49701 14.411629 6818.9036 67684669. -0.059992384 0.20549251 107.54294 14.286350 6821.4314 66156191. -0.064780670 0.21162340 107.59253 14.157407 6823.9591 64224770. -0.069668592 0.21775429 107.64386 14.025343 6826.4869 62492993. -0.074664140 0.22388518 107.70054 13.883644 6829.0146 61094643. -0.079847496 0.23001606 107.75144 13.750452 6831.5423 58602582. -0.085576788 0.23614695 107.79607 13.626467 6834.0701 56660995. -0.092091097 0.24227784 107.84629 13.491634 6836.5978 53340800. -0.10163199 0.24840873 107.90297 13.344266 6839.1256 49359818. -0.13590840 0.25453962 107.95123 13.213258 6841.6533 46003222. -0.11769675 0.26067051 107.99586 13.089273 6844.1811 44765815. -0.065285489 0.26680140 108.04485 12.953185