# # 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 = 42.130918 km # Date (UTC) = 2014-01-04T10:34:34.734 # Date (julian) = 2456661.94067979 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6478.6902 5.6025413e+10 0.026119874 0.025857295 95.207265 36.249051 6480.3247 5.0338661e+10 0.029191722 0.026350165 95.255722 36.172089 6481.9591 4.6155458e+10 0.031570579 0.026843035 95.304179 36.095127 6483.5936 4.2567792e+10 0.033671674 0.027335905 95.354557 36.011685 6485.2281 3.9291056e+10 0.035622541 0.027828775 95.405867 35.925101 6486.8625 3.6297809e+10 0.037406617 0.028321644 95.457177 35.838517 6488.4970 3.3790676e+10 0.038885237 0.028814514 95.508490 35.751926 6490.1315 3.1645263e+10 0.040124905 0.029307384 95.559806 35.665330 6491.7660 2.9662030e+10 0.041226969 0.029800254 95.611121 35.578733 6493.4004 2.7825239e+10 0.042164106 0.030293124 95.662434 35.490740 6495.0349 2.6126864e+10 0.042875385 0.030785994 95.713744 35.400950 6496.6694 2.4524696e+10 0.043043202 0.031278864 95.765054 35.311160 6498.3038 2.3034142e+10 0.042327750 0.031771734 95.813636 35.225460 6499.9383 2.1694229e+10 0.040884733 0.032264604 95.856391 35.148498 6501.5728 2.0573702e+10 0.039705025 0.032757473 95.899145 35.071536 6503.2072 1.9608952e+10 0.040679922 0.033250343 95.941900 34.994574 6504.8417 1.8705444e+10 0.045670456 0.033743213 95.991590 34.909813 6506.4762 1.7729675e+10 0.056209244 0.034236083 96.042900 34.823229 6508.1106 1.6786834e+10 0.070933312 0.034728953 96.094210 34.736645 6509.7451 1.5899554e+10 0.086219155 0.035221823 96.139599 34.656722 6511.3796 1.5152901e+10 0.099297705 0.035714693 96.182356 34.579760 6513.0141 1.4584875e+10 0.10909831 0.036207563 96.225113 34.502798 6514.6485 1.4022519e+10 0.11756609 0.036700433 96.269444 34.424065 6516.2830 1.3453196e+10 0.12607959 0.037193303 96.320751 34.337482 6517.9175 1.2861916e+10 0.13464701 0.037686172 96.372059 34.250898 6519.5519 1.2239433e+10 0.14322670 0.038179042 96.423157 34.164313 6521.1864 1.1646001e+10 0.15187813 0.038671912 96.471266 34.077718 6522.8209 1.1030664e+10 0.15827783 0.039132205 96.519376 33.991122 6524.4553 1.0388094e+10 0.16250206 0.039588722 96.567485 33.904527 6526.0898 9.8540474e+09 0.16498198 0.039762241 96.610522 33.827061 6527.7243 9.4239658e+09 0.16919209 0.041242305 96.653279 33.750099 6529.3587 9.1024497e+09 0.17161384 0.042807237 96.696037 33.673137 6530.9932 8.7948836e+09 0.17309112 0.045219182 96.741143 33.590536 6532.6277 8.4241701e+09 0.17597404 0.047208557 96.789245 33.500745 6534.2622 8.0046799e+09 0.17634343 0.048017892 96.837348 33.410954 6535.8966 7.5847933e+09 0.17548837 0.047835345 96.884420 33.322194 6537.5311 7.1622721e+09 0.17653390 0.048935613 96.929315 33.235611 6539.1656 6.7676259e+09 0.17590748 0.049844038 96.974210 33.149029 6540.8000 6.3976015e+09 0.17517786 0.051232058 97.018672 33.064397 6542.4345 6.0690057e+09 0.17405542 0.051167199 97.061429 32.987435 6544.0690 5.8220399e+09 0.17237854 0.051700298 97.104186 32.910473 6545.7034 5.5907158e+09 0.17092035 0.052461869 97.146943 32.833511 6547.3379 5.3677705e+09 0.16993532 0.053415865 97.191185 32.749866 6548.9724 5.1252285e+09 0.16791487 0.053958032 97.236080 32.663282 6550.6068 4.8762062e+09 0.16687611 0.055137309 97.280975 32.576699 6552.2413 4.6463551e+09 0.16586228 0.055526027 97.327720 32.490108 6553.8758 4.3982553e+09 0.16391006 0.054894820 97.375828 32.403511 6555.5103 4.1654431e+09 0.16261059 0.054424627 97.423935 32.316914 6557.1447 3.9489454e+09 0.16125442 0.053775393 97.468284 32.234732 6558.7792 3.7652326e+09 0.15912802 0.052575335 97.508190 32.157770 6560.4137 3.6303327e+09 0.15734927 0.051901338 97.548096 32.080808 6562.0481 3.4920339e+09 0.15543697 0.050834102 97.588002 32.003846 6563.6826 3.3552508e+09 0.15310929 0.049138753 97.632650 31.917743 6565.3171 3.1981849e+09 0.15168262 0.047958357 97.677547 31.831160 6566.9515 3.0362011e+09 0.15024328 0.046644600 97.722445 31.744576 6568.5860 2.8962421e+09 0.14870229 0.045232979 97.763191 31.665994 6570.2205 2.7717399e+09 0.14775834 0.044826179 97.803097 31.589032 6571.8549 2.6766996e+09 0.14626541 0.044269772 97.843003 31.512070 6573.4894 2.5908192e+09 0.14434065 0.043264735 97.884523 31.431996 6575.1239 2.4969930e+09 0.14273586 0.042250409 97.929418 31.345413 6576.7584 2.4056050e+09 0.14061276 0.040498508 97.974313 31.258830 6578.3928 2.3019332e+09 0.13835145 0.038029295 98.019208 31.172904 6580.0273 2.2052390e+09 0.13647857 0.036495527 98.064103 31.089527 6581.6618 2.1018984e+09 0.13448847 0.035396217 98.108998 31.006151 6583.2962 1.9969653e+09 0.13312620 0.034871726 98.153214 30.923329 6584.9307 1.9152665e+09 0.13188067 0.034008521 98.190274 30.846357 6586.5652 1.8475172e+09 0.13038485 0.033163990 98.227333 30.769384 6588.1996 1.7963834e+09 0.12925988 0.033313260 98.264393 30.692412 6589.8341 1.7443711e+09 0.12776253 0.031391175 98.305989 30.609875 6591.4686 1.6793131e+09 0.12586566 0.028673170 98.350884 30.523292 6593.1031 1.6114870e+09 0.12441864 0.027006415 98.395779 30.436708 6594.7375 1.5430266e+09 0.12276758 0.025767660 98.437064 30.354556 6596.3720 1.4831802e+09 0.12068033 0.025725583 98.474122 30.277594 6598.0065 1.4419665e+09 0.11927096 0.025404082 98.511179 30.200633 6599.6409 1.4039011e+09 0.11837203 0.024968279 98.548236 30.123671 6601.2754 1.3619364e+09 0.11807483 0.027175386 98.592757 30.037546 6602.9099 1.3115272e+09 0.11725754 0.026740190 98.637652 29.950963 6604.5443 1.2618119e+09 0.11634976 0.026394485 98.682547 29.864379 6606.1788 1.2078984e+09 0.11587843 0.027182656 98.724767 29.777795 6607.8133 1.1604257e+09 0.11412421 0.024101084 98.766455 29.691212 6609.4477 1.1116869e+09 0.11170942 0.023838933 98.808142 29.604628 6611.0822 1.0661460e+09 0.10931032 0.024906028 98.846515 29.526969 6612.7167 1.0290741e+09 0.10838481 0.023785274 98.883570 29.452857 6614.3512 9.9306598e+08 0.10728900 0.023698562 98.920625 29.378746 6615.9856 9.6700168e+08 0.10572659 0.023281856 98.958642 29.302045 6617.6201 9.3947905e+08 0.10508807 0.023644838 99.000338 29.215449 6619.2546 9.0453388e+08 0.10450629 0.024587335 99.042034 29.128852 6620.8890 8.7036920e+08 0.10403280 0.025053686 99.083730 29.042257 6622.5235 8.3476697e+08 0.10318929 0.024618655 99.125417 28.955674 6624.1580 8.0210401e+08 0.10189697 0.024946869 99.167105 28.869090 6625.7924 7.7054702e+08 0.10129542 0.026343220 99.208792 28.782507 6627.4269 7.4045520e+08 0.099829383 0.025481718 99.245981 28.708035 6629.0614 7.1512099e+08 0.099022347 0.026098008 99.283036 28.633923 6630.6958 6.9004926e+08 0.097832623 0.025930016 99.320091 28.559812 6632.3303 6.7067917e+08 0.096674173 0.026071953 99.357807 28.479928 6633.9648 6.4954295e+08 0.095458871 0.026320694 99.396289 28.393344 6635.5993 6.3423607e+08 0.094292121 0.026489655 99.434772 28.306761 6637.2337 6.2141058e+08 0.093128141 0.026046942 99.474358 28.220177 6638.8682 5.9647127e+08 0.092235342 0.025633818 99.516046 28.133593 6640.5027 5.6817506e+08 0.092782307 0.025209151 99.557733 28.047009 6642.1371 5.3672918e+08 0.092824892 0.025157308 99.598374 27.963244 6643.7716 5.0901894e+08 0.092055323 0.025309121 99.635431 27.889133 6645.4061 5.0061447e+08 0.091119419 0.025641913 99.672488 27.815022 6647.0405 4.9344218e+08 0.089926174 0.026459124 99.709545 27.740910 6648.6750 4.8110746e+08 0.088804496 0.027416137 99.747628 27.657837 6650.3095 4.6133855e+08 0.088386852 0.026326085 99.786114 27.571241 6651.9439 4.4073985e+08 0.087861112 0.027207564 99.824600 27.484645 6653.5784 4.2353413e+08 0.087367563 0.027820980 99.863083 27.399980 6655.2129 4.1224346e+08 0.086243211 0.027698181 99.901566 27.316603 6656.8474 3.9806660e+08 0.084810797 0.028767135 99.940048 27.233227 6658.4818 3.7863905e+08 0.083900735 0.030915603 99.980074 27.148306 6660.1163 3.6372776e+08 0.083054294 0.031731702 100.02176 27.061722 6661.7508 3.4855289e+08 0.082006549 0.032917329 100.06345 26.975138 6663.3852 3.3923153e+08 0.081110897 0.032376456 100.10242 26.893084 6665.0197 3.3074551e+08 0.080848822 0.028514849 100.13663 26.818972 6666.6542 3.1972949e+08 0.080605385 0.027036068 100.17083 26.744861 6668.2886 3.0918613e+08 0.079913323 0.027726200 100.20504 26.670749 6669.9231 2.9878494e+08 0.079598645 0.027407605 100.24290 26.585974 6671.5576 2.9227695e+08 0.079348064 0.026873294 100.28138 26.499390 6673.1920 2.8480757e+08 0.078922619 0.027746439 100.31987 26.412807 6674.8265 2.7477327e+08 0.077714931 0.029652013 100.35835 26.328585 6676.4610 2.6496634e+08 0.075852160 0.032010827 100.39683 26.245208 6678.0955 2.5756969e+08 0.075125071 0.030872769 100.43531 26.161832 6679.7299 2.4873077e+08 0.075019315 0.029664594 100.47379 26.076473 6681.3644 2.3976320e+08 0.075517705 0.029936916 100.51227 25.989890 6682.9989 2.2707763e+08 0.075904233 0.031187713 100.55075 25.903307 6684.6333 2.1586617e+08 0.075610735 0.032686231 100.58763 25.818326 6686.2678 2.0847476e+08 0.074556571 0.033916896 100.62291 25.734949 6687.9023 1.9851816e+08 0.072457135 0.033839694 100.65818 25.651572 6689.5367 1.8980204e+08 0.070350914 0.033532871 100.69468 25.568190 6691.1712 1.7986694e+08 0.069367297 0.032960868 100.73317 25.484801 6692.8057 1.7466603e+08 0.068381844 0.031829741 100.77166 25.401411 6694.4401 1.7097147e+08 0.067273846 0.030644135 100.81014 25.317180 6696.0746 1.6675981e+08 0.066673232 0.029706788 100.84862 25.230597 6697.7091 1.6061254e+08 0.065599552 0.030181002 100.88710 25.144013 6699.3436 1.5309680e+08 0.063952353 0.031273427 100.92512 25.057895 6700.9780 1.4493093e+08 0.061994420 0.031393148 100.96039 24.974518 6702.6125 1.3729744e+08 0.061018356 0.033365811 100.99567 24.891141 6704.2470 1.2894665e+08 0.060592438 0.036298826 101.03092 24.808017 6705.8814 1.2445409e+08 0.059935596 0.038235618 101.06512 24.733902 6707.5159 1.2055577e+08 0.058988687 0.040112924 101.09933 24.659790 6709.1504 1.1573205e+08 0.057710826 0.041036899 101.13353 24.585679 6710.7848 1.1164978e+08 0.055729257 0.040650118 101.16829 24.505100 6712.4193 1.0492910e+08 0.053362244 0.042608480 101.20357 24.418516 6714.0538 1.0365664e+08 0.050911471 0.047307452 101.23884 24.331933 6715.6883 98244403. 0.048733167 0.048082511 101.27540 24.246632 6717.3227 90212071. 0.045832068 0.049854307 101.31388 24.163256 6718.9572 82738856. 0.042133317 0.051303163 101.35236 24.079879 6720.5917 78338818. 0.039976703 0.050351212 101.38994 23.996502 6722.2261 76763379. 0.033458680 0.050325651 101.42521 23.913125 6723.8606 73872755. -0.0028895101 0.049848913 101.46049 23.829749 6725.4951 67267031. 0.019370272 0.041266776 101.49576 23.746370 6727.1295 61219111. 0.086229405 0.040787808 101.53104 23.662981