# # 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 = 55.638350 km # Date (UTC) = 2015-12-14T09:22:50.692 # Date (julian) = 2457370.89086449 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.8074 5.2592038e+10 0.038077325 0.031923584 116.03656 26.691754 6501.2626 4.8465338e+10 0.047434381 0.032663943 116.09223 26.576131 6503.7178 4.4664461e+10 0.057133061 0.033404303 116.14790 26.456837 6506.1730 4.1079768e+10 0.067222772 0.034144662 116.20356 26.336948 6508.6282 3.7859906e+10 0.077818919 0.034885022 116.25698 26.219307 6511.0834 3.4957345e+10 0.088972220 0.035625381 116.30836 26.103700 6513.5386 3.2310671e+10 0.10070300 0.036365740 116.36055 25.988092 6515.9938 2.9817556e+10 0.11300961 0.037106100 116.41621 25.872484 6518.4490 2.7429449e+10 0.12586552 0.037846459 116.47188 25.756876 6520.9042 2.5204340e+10 0.13928783 0.038586819 116.52755 25.637598 6523.3594 2.3031677e+10 0.14931200 0.039268192 116.58321 25.517693 6525.8146 2.1031360e+10 0.15567654 0.039689245 116.63666 25.400017 6528.2698 1.9253976e+10 0.16235019 0.041656528 116.68804 25.284410 6530.7250 1.7675994e+10 0.16730478 0.044843706 116.74021 25.168803 6533.1802 1.6244401e+10 0.17221014 0.047596174 116.79587 25.053196 6535.6354 1.4895095e+10 0.17393889 0.047948655 116.85153 24.937588 6538.0906 1.3610962e+10 0.17597181 0.049200808 116.90357 24.821980 6540.5458 1.2417508e+10 0.17608617 0.051111962 116.95495 24.706372 6543.0010 1.1349987e+10 0.17424505 0.051382162 117.00633 24.590757 6545.4562 1.0411334e+10 0.17183505 0.052459654 117.05772 24.475134 6547.9114 9.5931088e+09 0.16938402 0.053633963 117.10910 24.359514 6550.3666 8.8399773e+09 0.16708844 0.055077160 117.16049 24.243907 6552.8218 8.1346278e+09 0.16488682 0.055379913 117.21187 24.128299 6555.2770 7.4877144e+09 0.16240677 0.054620594 117.26325 24.009088 6557.7322 6.9065836e+09 0.15982106 0.053407143 117.31463 23.889198 6560.1874 6.4018937e+09 0.15694527 0.052105315 117.36601 23.771476 6562.6426 5.9567532e+09 0.15380322 0.050268414 117.41739 23.655869 6565.0978 5.5488085e+09 0.15113495 0.048207305 117.46877 23.540258 6567.5530 5.1814203e+09 0.14876484 0.046149582 117.52016 23.424636 6570.0082 4.8456842e+09 0.14697061 0.044914097 117.57155 23.309014 6572.4634 4.5300046e+09 0.14478973 0.043964757 117.62293 23.193404 6574.9186 4.2480861e+09 0.14231660 0.042413785 117.67431 23.077796 6577.3738 3.9828498e+09 0.13939858 0.039633159 117.72569 22.962189 6579.8290 3.7347823e+09 0.13629511 0.036614736 117.77707 22.846581 6582.2842 3.5055501e+09 0.13337978 0.035216444 117.82846 22.731678 6584.7394 3.2820849e+09 0.13061901 0.034112708 117.87984 22.620352 6587.1946 3.0800643e+09 0.12782062 0.033201495 117.93122 22.509026 6589.6498 2.9006551e+09 0.12482056 0.031756739 117.97906 22.394137 6592.1050 2.7396110e+09 0.12113753 0.027971492 118.02616 22.278514 6594.5603 2.5763849e+09 0.11741067 0.025864973 118.07855 22.155760 6597.0155 2.4064681e+09 0.11370434 0.025717851 118.13635 22.025701 6599.4707 2.2380720e+09 0.11165058 0.024958038 118.18968 21.901681 6601.9259 2.0861134e+09 0.11139006 0.027481715 118.23678 21.786073 6604.3811 1.9575167e+09 0.11036618 0.026297534 118.28388 21.670465 6606.8363 1.8447126e+09 0.10979879 0.026001237 118.33098 21.554858 6609.2915 1.7431509e+09 0.10681286 0.023792508 118.37808 21.439250 6611.7467 1.6523612e+09 0.10423110 0.024482308 118.42838 21.326841 6614.2019 1.5649725e+09 0.10336790 0.023801419 118.47976 21.215515 6616.6571 1.4834004e+09 0.10203670 0.023385425 118.52939 21.102421 6619.1123 1.4054471e+09 0.10145479 0.024553002 118.57649 20.986798 6621.5675 1.3355384e+09 0.10058181 0.024901358 118.62360 20.871176 6624.0227 1.2620235e+09 0.098680606 0.024874443 118.67070 20.755569 6626.4779 1.1940265e+09 0.097227163 0.025982057 118.71780 20.639962 6628.9331 1.1341427e+09 0.095652240 0.026081930 118.76489 20.527526 6631.3883 1.0796086e+09 0.093730874 0.025970206 118.81199 20.416201 6633.8435 1.0281565e+09 0.092009402 0.026299514 118.86147 20.297281 6636.2987 9.6852439e+08 0.090322564 0.026433766 118.91446 20.167220 6638.7539 9.0993300e+08 0.089048208 0.025638798 118.96551 20.041915 6641.2091 8.5757035e+08 0.089458951 0.025149010 119.01262 19.926291 6643.6643 8.1246466e+08 0.088461939 0.025292916 119.05973 19.810676 6646.1195 7.7253606e+08 0.087033674 0.025981992 119.10682 19.699317 6648.5747 7.3631555e+08 0.085469779 0.027348976 119.15392 19.587991 6651.0299 7.0075483e+08 0.084581111 0.026507064 119.20102 19.473846 6653.4851 6.7047805e+08 0.083851162 0.027773326 119.24812 19.358239 6655.9403 6.3963390e+08 0.082013092 0.027998743 119.29522 19.244016 6658.3955 6.1242084e+08 0.080449239 0.030762477 119.34232 19.132690 6660.8507 5.8634618e+08 0.079015653 0.032399229 119.38942 19.021364 6663.3059 5.5770127e+08 0.077785911 0.032398444 119.43758 18.891533 6665.7611 5.2709279e+08 0.077586908 0.027300062 119.48575 18.761471 6668.2163 4.9941842e+08 0.076888504 0.027662175 119.53295 18.648479 6670.6715 4.7406605e+08 0.076577485 0.027017542 119.58005 18.537139 6673.1267 4.5065439e+08 0.076239425 0.027648694 119.62716 18.425807 6675.5819 4.2928756e+08 0.074188997 0.030912895 119.67426 18.314481 6678.0371 4.0727613e+08 0.072779504 0.030911804 119.72161 18.198638 6680.4923 3.9048536e+08 0.073102023 0.029547724 119.76978 18.068577 6682.9475 3.7519688e+08 0.073782941 0.031148467 119.81778 17.941611 6685.4027 3.5939018e+08 0.073377282 0.033130186 119.86488 17.830286 6687.8579 3.4376129e+08 0.070897987 0.033864441 119.91198 17.718960 6690.3131 3.2877820e+08 0.068603936 0.033079982 119.95996 17.596087 6692.7683 3.1327333e+08 0.067427363 0.031873146 120.00813 17.470843 6695.2235 2.9819633e+08 0.066623433 0.029818419 120.05228 17.356079 6697.6787 2.8244913e+08 0.065724937 0.030177157 120.09510 17.244738 6700.1339 2.6462636e+08 0.063844684 0.030767040 120.14218 17.125562 6702.5891 2.5009427e+08 0.062361607 0.033347135 120.19517 16.995502 6705.0443 2.3749096e+08 0.062445024 0.036747377 120.24467 16.871860 6707.4995 2.2683739e+08 0.061873498 0.040115272 120.28749 16.760534 6709.9547 2.1982559e+08 0.060666306 0.040525301 120.33036 16.649076 6712.4099 2.0902143e+08 0.058276066 0.042591029 120.37851 16.523865 6714.8651 1.9796341e+08 0.056027283 0.047368448 120.42668 16.398621 6717.3203 1.8965919e+08 0.053695001 0.049854455 120.46987 16.286337 6719.7755 1.8325621e+08 0.051876619 0.050633042 120.51269 16.175011 6722.2307 1.7921986e+08 0.051758724 0.050319977 120.55870 16.055384 6724.6859 1.7341428e+08 0.047920653 0.044198801 120.60687 15.930122 6727.1411 1.6575098e+08 0.045364851 0.040772374 120.65505 15.804870 6729.5963 1.5840366e+08 0.044478602 0.040647964 120.70322 15.679626 6732.0515 1.5220098e+08 0.042416784 0.043749694 120.74902 15.560563 6734.5067 1.4544089e+08 0.041752284 0.049323111 120.79183 15.449237 6736.9619 1.4045729e+08 0.043578896 0.053991620 120.83523 15.336400 6739.4171 1.3523545e+08 0.044062277 0.063337035 120.88340 15.211157 6741.8723 1.3002625e+08 0.041920410 0.068246621 120.93157 15.085913 6744.3275 1.2514942e+08 0.036926380 0.078046747 120.97974 14.960669 6746.7827 1.1786893e+08 0.032713091 0.069887165 121.02791 14.835426 6749.2379 1.1300789e+08 0.031314217 0.072212787 121.07608 14.710182 6751.6931 1.0817142e+08 0.027373198 0.074004731 121.12425 14.584939 6754.1483 1.0446906e+08 0.025527299 0.075974932 121.16771 14.471953 6756.6035 1.0065251e+08 0.022615911 0.075719895 121.21053 14.360627 6759.0587 96467352. 0.023197159 0.075834128 121.25627 14.244329 6761.5139 94061853. 0.025440705 0.078010686 121.30445 14.123885 6763.9691 89855095. 0.030166004 0.079389299 121.35036 14.001187 6766.4243 87251213. 0.031752170 0.080673613 121.39371 13.875943 6768.8795 84418188. 0.027301944 0.084020824 121.43896 13.750700 6771.3347 81399294. 0.022995930 0.090117040 121.48713 13.625456 6773.7899 78749092. 0.018788280 0.096071982 121.53530 13.500213 6776.2451 76928992. 0.014596789 0.10202692 121.58347 13.374969 6778.7003 75077570. 0.010386582 0.10798187 121.63048 13.250890 6781.1555 71091313. 0.0060772690 0.11393681 121.67383 13.130463 6783.6107 66791984. 0.0017097848 0.11989175 121.71798 13.009237 6786.0660 57502695. -0.0029687522 0.12584669 121.76615 12.883994 6788.5212 53365360. -0.0075359310 0.13180164 121.81389 12.758751 6790.9764 54400017. -0.011926009 0.13775658 121.85725 12.633508 6793.4316 55493876. -0.016488363 0.14371152 121.90076 12.508092 6795.8868 57718927. -0.021214441 0.14966647 121.95582 12.370459 6798.3420 54394236. -0.026815855 0.15562141 122.00856 12.235272 6800.7972 50465116. -0.033502734 0.16157635 122.05191 12.110029 6803.2524 45741264. -0.043529987 0.16753129 122.09585 11.985370 6805.7076 43500970. -0.077383870 0.17348624 122.14402 11.864943 6808.1628 43903406. -0.058448674 0.17944118 122.19198 11.744296 6810.6180 46327989. -0.013947445 0.18539612 122.23533 11.619034