# # 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 = 49.437229 km # Date (UTC) = 2016-01-14T10:45:37.228 # Date (julian) = 2457401.94834755 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.5814 9.8682947e+10 0.027352990 0.030950782 93.830879 37.700962 6497.7271 8.8351086e+10 0.034890417 0.031597817 93.903700 37.573525 6499.8728 7.8689661e+10 0.042557363 0.032244852 93.980680 37.438806 6502.0185 7.0175549e+10 0.050459919 0.032891887 94.052958 37.314378 6504.1642 6.2716830e+10 0.058680354 0.033538922 94.120327 37.200695 6506.3099 5.6934561e+10 0.067482349 0.034185956 94.187214 37.086533 6508.4557 5.2197656e+10 0.076958406 0.034832991 94.250362 36.968658 6510.6014 4.7993873e+10 0.087112583 0.035480026 94.313511 36.850782 6512.7471 4.4099180e+10 0.097897489 0.036127061 94.386879 36.720463 6514.8928 4.0084749e+10 0.10913346 0.036774096 94.463859 36.585745 6517.0385 3.6226084e+10 0.12087163 0.037421130 94.531704 36.462150 6519.1842 3.2981794e+10 0.13332107 0.038068165 94.594852 36.344272 6521.3300 3.0289949e+10 0.14645571 0.038715200 94.659201 36.227596 6523.4757 2.8064759e+10 0.15598421 0.039297006 94.726560 36.113932 6525.6214 2.5941027e+10 0.16335979 0.039711298 94.793920 36.000267 6527.7671 2.3725817e+10 0.17036630 0.041273394 94.865653 35.867449 6529.9128 2.1591937e+10 0.17617215 0.043689816 94.937821 35.732729 6532.0585 1.9530088e+10 0.18019598 0.046733086 95.002491 35.612012 6534.2042 1.7810074e+10 0.18148507 0.048001692 95.065639 35.494137 6536.3500 1.6403431e+10 0.18079426 0.048103620 95.126868 35.378180 6538.4957 1.5202811e+10 0.18028110 0.049398049 95.185806 35.264514 6540.6414 1.4096777e+10 0.17857620 0.051157112 95.245809 35.149153 6542.7871 1.2955022e+10 0.17612563 0.051301067 95.317980 35.014435 6544.9328 1.1838693e+10 0.17422966 0.052401071 95.390104 34.879806 6547.0785 1.0808734e+10 0.17190908 0.053317231 95.453281 34.761876 6549.2243 9.9710682e+09 0.16944192 0.054194811 95.516429 34.643999 6551.3700 9.3032123e+09 0.16752793 0.055365615 95.576939 34.528762 6553.5157 8.6756439e+09 0.16544791 0.055075840 95.635877 34.415097 6555.6614 8.0977716e+09 0.16301745 0.054297632 95.694814 34.300373 6557.8071 7.5880348e+09 0.16071334 0.053360206 95.753752 34.182496 6559.9528 7.1292842e+09 0.15790584 0.052279633 95.812690 34.064620 6562.0985 6.6510040e+09 0.15467219 0.050786134 95.883220 33.931990 6564.2443 6.1830829e+09 0.15132529 0.048660899 95.955391 33.797272 6566.3900 5.7383906e+09 0.14867346 0.046962276 96.017008 33.679345 6568.5357 5.3427565e+09 0.14631031 0.045279235 96.075945 33.565679 6570.6814 5.0233431e+09 0.14401627 0.044635247 96.133109 33.450228 6572.8271 4.7271117e+09 0.14141495 0.043756485 96.187844 33.332335 6574.9728 4.4570326e+09 0.13836957 0.042387754 96.242777 33.214641 6577.1186 4.2272739e+09 0.13475143 0.040034155 96.301715 33.100975 6579.2643 4.0091139e+09 0.13060438 0.036925218 96.360653 32.987308 6581.4100 3.7783057e+09 0.12720970 0.035472460 96.425247 32.859499 6583.5557 3.5333621e+09 0.12451755 0.034740397 96.492606 32.724780 6585.7014 3.2894128e+09 0.12225887 0.033410009 96.552472 32.602553 6587.8471 3.0762391e+09 0.12082134 0.033346061 96.607202 32.488889 6589.9928 2.8990472e+09 0.11893488 0.031076264 96.662849 32.374306 6592.1386 2.7500601e+09 0.11648854 0.027938942 96.721787 32.256429 6594.2843 2.6052057e+09 0.11419281 0.026016470 96.780725 32.138552 6596.4300 2.4763378e+09 0.11155280 0.025725319 96.836114 32.024223 6598.5757 2.3560477e+09 0.10964740 0.025132303 96.890841 31.910558 6600.7214 2.2397355e+09 0.10932245 0.026472984 96.945570 31.794925 6602.8671 2.1366872e+09 0.10831858 0.026776653 97.000300 31.677049 6605.0129 2.0299026e+09 0.10742204 0.026675825 97.055748 31.558068 6607.1586 1.9228237e+09 0.10599139 0.025393883 97.118294 31.428161 6609.3043 1.8112859e+09 0.10291967 0.023796318 97.180736 31.298472 6611.4500 1.7059289e+09 0.10018059 0.024671490 97.235463 31.184806 6613.5957 1.6094494e+09 0.099117556 0.023792159 97.290190 31.071141 6615.7414 1.5236742e+09 0.097524619 0.023274343 97.344919 30.954788 6617.8871 1.4482171e+09 0.096594998 0.023733379 97.399649 30.836912 6620.0329 1.3731801e+09 0.095747511 0.024777787 97.454378 30.720142 6622.1786 1.3128695e+09 0.094179894 0.024710462 97.509105 30.606476 6624.3243 1.2519141e+09 0.092140601 0.025035901 97.563832 30.492809 6626.4700 1.1877101e+09 0.090391404 0.025992072 97.625497 30.364732 6628.6157 1.1235531e+09 0.088769127 0.025953084 97.688044 30.234825 6630.7614 1.0533727e+09 0.087160165 0.025930178 97.740862 30.114651 6632.9072 9.9829585e+08 0.085929565 0.026141120 97.791381 29.996776 6635.0529 9.5458449e+08 0.084731176 0.026407716 97.843728 29.880718 6637.1986 9.1240153e+08 0.083571341 0.026064152 97.898463 29.767034 6639.3443 8.7501890e+08 0.083049102 0.025505015 97.952951 29.653352 6641.4900 8.3719880e+08 0.083751449 0.025149964 98.003471 29.539685 6643.6357 8.0198062e+08 0.083153701 0.025288606 98.053991 29.426019 6645.7814 7.6805861e+08 0.082307746 0.025817762 98.109441 29.301259 6647.9272 7.2897747e+08 0.081504659 0.026925934 98.167179 29.171353 6650.0729 6.8539507e+08 0.080964767 0.026271920 98.220550 29.048721 6652.2186 6.4662456e+08 0.080589387 0.027310664 98.271066 28.930845 6654.3643 6.1262686e+08 0.079892289 0.027881028 98.321583 28.813934 6656.5100 5.8487033e+08 0.078134292 0.028471061 98.372102 28.700268 6658.6557 5.5994100e+08 0.076662310 0.031224042 98.422621 28.586602 6660.8015 5.3463154e+08 0.075350581 0.032354479 98.473141 28.472935 6662.9472 5.1066883e+08 0.074181831 0.032512854 98.523661 28.359269 6665.0929 4.8439785e+08 0.073604610 0.028394938 98.577633 28.237830 6667.2386 4.5830586e+08 0.073185997 0.027191099 98.635367 28.107924 6669.3843 4.3276969e+08 0.072220452 0.027960985 98.690214 27.984517 6671.5300 4.1086071e+08 0.072216882 0.026872902 98.740733 27.870851 6673.6757 3.9418309e+08 0.071537242 0.028469844 98.791252 27.757184 6675.8215 3.7819676e+08 0.069423278 0.031371755 98.841772 27.643518 6677.9672 3.6392787e+08 0.068334582 0.030983277 98.892291 27.529852 6680.1129 3.4996803e+08 0.068665989 0.029465794 98.944370 27.405639 6682.2586 3.3723068e+08 0.069566297 0.030622128 98.997292 27.275732 6684.4043 3.2139277e+08 0.069928105 0.032674609 99.048842 27.155099 6686.5500 3.0696753e+08 0.069075533 0.034081105 99.099362 27.041433 6688.6958 2.9276633e+08 0.066603038 0.033945794 99.150352 26.924590 6690.8415 2.7963513e+08 0.065654137 0.033019431 99.203277 26.794683 6692.9872 2.6943830e+08 0.065037843 0.031618972 99.255921 26.666679 6695.1329 2.5449811e+08 0.064728820 0.029835062 99.306440 26.553013 6697.2786 2.4308027e+08 0.064353233 0.030126524 99.356959 26.439347 6699.4243 2.3417147e+08 0.063151720 0.031198897 99.404360 26.325668 6701.5700 2.2615007e+08 0.061549015 0.032245864 99.450676 26.211985 6703.7158 2.1936125e+08 0.061768428 0.035466295 99.499411 26.092360 6705.8615 2.0968645e+08 0.061973131 0.038200136 99.552323 25.962476 6708.0072 1.9650732e+08 0.061886174 0.040051409 99.603336 25.837258 6710.1529 1.8942089e+08 0.060772893 0.040526424 99.649652 25.723574 6712.2986 1.8016886e+08 0.058819493 0.042384400 99.695968 25.609890 6714.4443 1.7321434e+08 0.056854179 0.047336814 99.748318 25.481395 6716.5901 1.6713689e+08 0.055053654 0.049270453 99.801243 25.351488 6718.7358 1.6018194e+08 0.052811339 0.050958317 99.848646 25.235135 6720.8815 1.5498402e+08 0.052938242 0.050317631 99.894955 25.121469 6723.0272 1.4958926e+08 0.051977638 0.049384113 99.944302 25.002555 6725.1729 1.4524629e+08 0.047730673 0.041468009 99.997227 24.877459 6727.3186 1.3987123e+08 0.046329559 0.040535880 100.04763 24.756716 6729.4643 1.3396208e+08 0.045663385 0.040735930 100.09394 24.643051 6731.6101 1.2835586e+08 0.043903591 0.042964158 100.14030 24.529271 6733.7558 1.2356843e+08 0.042757116 0.048027635 100.19321 24.399390 6735.9015 1.2100159e+08 0.044053097 0.050250432 100.24614 24.269482 6738.0472 1.1588202e+08 0.045245217 0.057580984 100.28903 24.154631 6740.1929 1.0845683e+08 0.044818895 0.064379936 100.33112 24.040964 6742.3386 1.0424983e+08 0.042068446 0.069435905 100.37919 23.920994 6744.4844 98508784. 0.037709273 0.078168046 100.43212 23.795898 6746.6301 93441102. 0.034147047 0.071662032 100.47992 23.676211 6748.7758 88249932. 0.032507581 0.071098323 100.52202 23.562545 6750.9215 84705336. 0.029413390 0.073577627 100.56518 23.447290 6753.0672 82459631. 0.026382985 0.073194807 100.61810 23.317384 6755.2129 81714467. 0.024249412 0.074511989 100.67093 23.187571 6757.3586 79762918. 0.021919072 0.075651664 100.71905 23.062475 6759.5044 74593390. 0.022473188 0.075941665 100.76716 22.937379 6761.6501 70319149. 0.024570496 0.078021934 100.81357 22.823039 6763.7958 66592600. 0.028035690 0.078861363 100.85988 22.709372 6765.9415 66521041. 0.029640466 0.079703069 100.90721 22.586520 6768.0872 71764351. 0.026687608 0.081169871 100.95533 22.456613 6770.2329 67142536. 0.021432486 0.087444676 101.00344 22.329050 6772.3787 60125898. 0.016198194 0.092648979 101.05156 22.203955 6774.5244 58045869. 0.010731656 0.097853282 101.09967 22.076893 6776.6701 53334338. 0.0025137419 0.10305759 101.14778 21.946987 6778.8158 53760334. -0.023456611 0.10826189 101.19590 21.818670 6780.9615 50497087. -0.0086123251 0.11346619 101.24401 21.693574 6783.1072 46495618. 0.032536986 0.11867050 101.29061 21.571358