# # 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 = 64.666093 km # Date (UTC) = 2014-11-23T10:25:23.450 # Date (julian) = 2456984.93429919 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.3092 1.2879042e+11 0.055038034 0.032677989 99.333016 28.624372 6504.1047 1.0607172e+11 0.065886624 0.033520962 99.398835 28.465315 6506.9002 8.7422243e+10 0.076735451 0.034363936 99.464653 28.309146 6509.6957 7.3966641e+10 0.087774877 0.035206909 99.530470 28.155575 6512.4912 6.2758334e+10 0.099014867 0.036049882 99.602898 27.982165 6515.2866 5.3272993e+10 0.11049364 0.036892856 99.677102 27.802832 6518.0821 4.5685980e+10 0.12240525 0.037735829 99.742930 27.643752 6520.8776 3.9728413e+10 0.13492365 0.038578803 99.807192 27.486241 6523.6731 3.5075809e+10 0.14334881 0.039345944 99.867524 27.332669 6526.4686 3.1107803e+10 0.14847944 0.040159374 99.930387 27.176565 6529.2641 2.7685210e+10 0.15280167 0.042656483 99.996201 27.017508 6532.0596 2.4523037e+10 0.15693575 0.046733980 100.06402 26.847944 6534.8551 2.1622602e+10 0.15871247 0.048183760 100.13260 26.673140 6537.6506 1.9049067e+10 0.15959094 0.048991948 100.19293 26.514084 6540.4461 1.6937759e+10 0.16090711 0.051064841 100.25447 26.356233 6543.2416 1.5312973e+10 0.16130846 0.051445295 100.32029 26.202662 6546.0371 1.3879159e+10 0.16153436 0.052495024 100.38393 26.046915 6548.8326 1.2604449e+10 0.16220397 0.053916276 100.44426 25.887858 6551.6280 1.1462185e+10 0.16215866 0.055456206 100.50459 25.731946 6554.4235 1.0465810e+10 0.16054725 0.054841268 100.56493 25.578375 6557.2190 9.6362215e+09 0.15834595 0.053728815 100.62526 25.424803 6560.0145 8.8603619e+09 0.15552293 0.052261210 100.68559 25.271231 6562.8100 8.0983195e+09 0.15230997 0.050109139 100.75391 25.091510 6565.6055 7.3636887e+09 0.14964503 0.047630828 100.82001 24.919081 6568.4010 6.7014877e+09 0.14799330 0.045403042 100.88034 24.765510 6571.1965 6.1482595e+09 0.14669582 0.044449607 100.94067 24.611927 6573.9920 5.6879131e+09 0.14482086 0.042861432 101.00101 24.458332 6576.7875 5.2756827e+09 0.14311641 0.040464982 101.05759 24.300994 6579.5830 4.9032359e+09 0.14071905 0.036750009 101.11244 24.141938 6582.3785 4.5814355e+09 0.13877262 0.035190802 101.17201 23.987610 6585.1740 4.2937803e+09 0.13691019 0.033831693 101.23235 23.834038 6587.9695 4.0359837e+09 0.13512444 0.033373164 101.29267 23.680465 6590.7649 3.8075261e+09 0.13242015 0.029639142 101.35182 23.526893 6593.5604 3.5852083e+09 0.12976001 0.026581180 101.40667 23.373322 6596.3559 3.3569253e+09 0.12653918 0.025725656 101.46459 23.211142 6599.1514 3.1292007e+09 0.12435131 0.024938838 101.52728 23.035627 6601.9469 2.9140305e+09 0.12409513 0.027491636 101.58809 22.877601 6604.7424 2.7322516e+09 0.12246908 0.026512097 101.64842 22.724029 6607.5379 2.5757781e+09 0.12020400 0.024644833 101.70341 22.570458 6610.3334 2.4319647e+09 0.11565889 0.024321534 101.75825 22.416887 6613.1289 2.3026873e+09 0.11300770 0.023620881 101.81310 22.263314 6615.9244 2.1830825e+09 0.11082323 0.023279972 101.86795 22.109742 6618.7199 2.0741554e+09 0.11006358 0.024314389 101.92279 21.956170 6621.5154 1.9678117e+09 0.10945798 0.024918625 101.98041 21.802587 6624.3109 1.8604465e+09 0.10786643 0.025028713 102.04075 21.648993 6627.1064 1.7647677e+09 0.10613932 0.025357894 102.09735 21.495413 6629.9018 1.6799601e+09 0.10507759 0.025946048 102.15220 21.341842 6632.6973 1.6005419e+09 0.10331081 0.026115962 102.20234 21.188270 6635.4928 1.5251123e+09 0.10159181 0.026473696 102.25216 21.033942 6638.2883 1.4436087e+09 0.10028279 0.025659081 102.31485 20.858427 6641.0838 1.3571518e+09 0.10072444 0.025148585 102.37409 20.692550 6643.8793 1.2777992e+09 0.099901982 0.025325384 102.42893 20.538977 6646.6748 1.2053626e+09 0.098674962 0.026269449 102.48378 20.388783 6649.4703 1.1464585e+09 0.097312427 0.026985404 102.53863 20.240696 6652.2658 1.0946138e+09 0.096590660 0.027323651 102.59348 20.088262 6655.0613 1.0451790e+09 0.095085961 0.027635539 102.64833 19.934691 6657.8568 9.9702796e+08 0.092611202 0.029894945 102.69785 19.781119 6660.6523 9.5850790e+08 0.090284507 0.032218880 102.74802 19.627547 6663.4478 9.1839310e+08 0.088148814 0.032359127 102.80286 19.473975 6666.2433 8.7394413e+08 0.087357182 0.026955997 102.85822 19.315341 6669.0387 8.2547861e+08 0.085577051 0.028315905 102.91463 19.146095 6671.8342 7.7507314e+08 0.085207305 0.026877237 102.96991 18.988254 6674.6297 7.3717650e+08 0.083448892 0.029486013 103.02476 18.834682 6677.4252 7.0269287e+08 0.080696399 0.031753713 103.07465 18.681090 6680.2207 6.7290044e+08 0.080729457 0.029489079 103.12447 18.527945 6683.0162 6.4221064e+08 0.081623895 0.031212341 103.17931 18.379858 6685.8117 6.1245798e+08 0.081159384 0.033562199 103.23274 18.230354 6688.6072 5.8776532e+08 0.077824528 0.033925352 103.28210 18.076782 6691.4027 5.6220963e+08 0.076178093 0.032906254 103.33453 17.916392 6694.1982 5.3589779e+08 0.074950602 0.030983262 103.39095 17.747146 6696.9937 5.1035970e+08 0.074463590 0.030088638 103.44144 17.591061 6699.7892 4.8222399e+08 0.072681196 0.030862255 103.49089 17.437580 6702.5847 4.6421968e+08 0.070928361 0.033343586 103.54574 17.289492 6705.3802 4.4486752e+08 0.070987723 0.037344445 103.60089 17.137320 6708.1756 4.2433994e+08 0.070324909 0.040234852 103.65731 16.968074 6710.9711 4.0421307e+08 0.068174016 0.040686584 103.70951 16.808197 6713.7666 3.8046776e+08 0.065203969 0.046459373 103.75887 16.654625 6716.5621 3.6633001e+08 0.062492445 0.049229321 103.80823 16.505302 6719.3576 3.4903597e+08 0.059609072 0.051030074 103.85760 16.357215 6722.1531 3.3548180e+08 0.059371922 0.050415917 103.91367 16.188999 6724.9486 3.2039095e+08 0.054428951 0.042005201 103.96757 16.025333 6727.7441 3.0626364e+08 0.052378748 0.039969035 104.01693 15.871762 6730.5396 2.9535720e+08 0.050299626 0.041118747 104.06630 15.721111 6733.3351 2.8238639e+08 0.048167179 0.045743573 104.11566 15.573023 6736.1306 2.6872224e+08 0.048987016 0.050848658 104.16558 15.409924 6738.9261 2.5462167e+08 0.049788319 0.062419529 104.21563 15.243094 6741.7216 2.4431823e+08 0.047402244 0.067816628 104.26500 15.095007 6744.5171 2.3436601e+08 0.041810017 0.078193341 104.31641 14.940765 6747.3125 2.2370339e+08 0.036599024 0.067253563 104.37283 14.771520 6750.1080 2.1143630e+08 0.033703982 0.072188615 104.42434 14.616976 6752.9035 1.9940633e+08 0.030302118 0.073088919 104.47371 14.468867 6755.6990 1.9269723e+08 0.027209202 0.074298867 104.52375 14.302338 6758.4945 1.8671983e+08 0.025909878 0.074751048 104.57368 14.138968 6761.2900 1.7886934e+08 0.026856102 0.077992186 104.62305 13.990859 6764.0855 1.7135429e+08 0.031791488 0.079487382 104.67277 13.833153 6766.8810 1.6341316e+08 0.032043338 0.081706580 104.72292 13.663907 6769.6765 1.5517764e+08 0.025474639 0.086095047 104.77239 13.512831 6772.4720 1.4855803e+08 0.019731908 0.092875346 104.82200 13.363993 6775.2675 1.4191818e+08 0.013955422 0.099655646 104.87842 13.194748 6778.0630 1.3596148e+08 0.0081877572 0.10643594 104.92932 13.034816 6780.8585 1.3212209e+08 0.0025452165 0.11321624 104.97319 12.886727 6783.6540 1.2285591e+08 -0.0035294087 0.11999654 105.02094 12.725587 6786.4494 1.1785324e+08 -0.0093073458 0.12677684 105.07122 12.556341 6789.2449 1.1447036e+08 -0.014932041 0.13355714 105.12764 12.387095 6792.0404 1.1091558e+08 -0.020561924 0.14033744 105.18138 12.217849 6794.8359 1.0915580e+08 -0.025962973 0.14711774 105.23152 12.048604 6797.6314 1.0384299e+08 -0.031793154 0.15389804 105.27646 11.901499 6800.4269 1.0028673e+08 -0.037371045 0.16067834 105.32044 11.758690 6803.2224 96500812. -0.042942997 0.16745864 105.37685 11.589443 6806.0179 93080336. -0.048425905 0.17423894 105.43068 11.420196 6808.8134 88919883. -0.054034790 0.18101924 105.48083 11.250951 6811.6089 84144018. -0.059809134 0.18779953 105.53098 11.081705 6814.4044 78787491. -0.065798681 0.19457983 105.58112 10.913849 6817.1999 75493005. -0.071384249 0.20136013 105.63127 10.750872 6819.9954 72790761. -0.076856418 0.20814043 105.68534 10.583967 6822.7909 66804342. -0.083392798 0.21492073 105.74156 10.414917 6825.5863 61703518. -0.089931048 0.22170103 105.79171 10.251940 6828.3818 57242667. -0.096524071 0.22848133 105.84186 10.086230 6831.1773 60758407. -0.099892534 0.23526163 105.89201 9.9169832 6833.9728 68527225. -0.10211709 0.24204193 105.94215 9.7530062 6836.7683 75068057. -0.10529368 0.24882223 105.99230 9.5884912 6839.5638 72883709. -0.11100900 0.25560253 106.04244 9.4192452 6842.3593 68783354. -0.11752631 0.26238283 106.09259 9.2540737 6845.1548 61100209. -0.12586148 0.26916312 106.14274 9.0907542 6847.9503 53776182. -0.13531737 0.27594342 106.19289 8.9215082 6850.7458 51344909. -0.14324574 0.28272372 106.24304 8.7551408 6853.5413 49579753. -0.15167865 0.28950402 106.29318 8.5921622 6856.3368 50066342. -0.15954968 0.29628432 106.34332 8.4292091 6859.1323 48240314. -0.17107858 0.30306462 106.39570 8.2569964 6861.9278 45960059. -0.18674425 0.30984492 106.45421 8.0595370 6864.7232 39757620. -0.21968963 0.31662522 106.50519 7.8931480 6867.5187 41297697. -0.31177302 0.32340552 106.55342 7.7301707 6870.3142 41936887. -0.24836339 0.33018582 106.59729 7.5671931 6875.9052 43068834. -0.091254125 0.34374642 106.70721 7.1940872