# # 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 = 44.170464 km # Date (UTC) = 2016-01-19T09:21:07.445 # Date (julian) = 2457406.88966950 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.0668 6.2025850e+10 0.073752111 0.034112639 -17.807269 53.697033 6508.2975 5.7359237e+10 0.084399689 0.034785285 -17.953746 53.570564 6510.5281 5.1916405e+10 0.095063200 0.035457931 -18.098798 53.445519 6512.7588 4.7164431e+10 0.10599800 0.036130577 -18.240269 53.316893 6514.9894 4.3001669e+10 0.11723834 0.036803223 -18.380320 53.186847 6517.2200 3.9357066e+10 0.12877217 0.037475869 -18.520371 53.060385 6519.4507 3.5968763e+10 0.14054225 0.038148515 -18.660423 52.935339 6521.6813 3.3008204e+10 0.15261626 0.038821160 -18.800473 52.806705 6523.9120 3.0217295e+10 0.15932570 0.039405147 -18.940523 52.676657 6526.1426 2.7904827e+10 0.16440486 0.039817626 -19.076981 52.546610 6528.3733 2.5651543e+10 0.16968682 0.041738611 -19.212030 52.416564 6530.6039 2.3404616e+10 0.17332058 0.044674192 -19.347063 52.290128 6532.8346 2.1310289e+10 0.17674678 0.047381396 -19.482089 52.165104 6535.0652 1.9472743e+10 0.17823155 0.048196001 -19.605001 52.048148 6537.2959 1.7829321e+10 0.17850884 0.048824719 -19.723184 51.934341 6539.5265 1.6437489e+10 0.17847647 0.050280972 -19.846524 51.813476 6541.7572 1.5220253e+10 0.17690885 0.051080985 -19.976570 51.683430 6543.9878 1.3973853e+10 0.17444546 0.051641151 -20.106617 51.555561 6546.2185 1.3024599e+10 0.17166153 0.052644289 -20.236664 51.430515 6548.4491 1.1707454e+10 0.16932842 0.053801767 -20.366711 51.303289 6550.6798 1.0629404e+10 0.16690878 0.055155566 -20.496758 51.173241 6552.9104 9.7268293e+09 0.16498835 0.055357617 -20.624620 51.043193 6555.1411 8.9560443e+09 0.16269873 0.054734842 -20.749666 50.913147 6557.3717 8.5104308e+09 0.15990415 0.053633121 -20.874702 50.783110 6559.6024 7.7204909e+09 0.15716613 0.052319192 -20.999726 50.653086 6561.8330 7.0900512e+09 0.15424832 0.050962196 -21.116003 50.530164 6564.0636 6.5513857e+09 0.15102227 0.048742751 -21.221055 50.416357 6566.2943 6.2085148e+09 0.14838134 0.047016401 -21.329172 50.300061 6568.5249 5.8515908e+09 0.14615798 0.045289113 -21.454217 50.170014 6570.7556 5.4453106e+09 0.14419339 0.044604517 -21.577721 50.039968 6572.9862 5.0574154e+09 0.14202151 0.043665361 -21.692763 49.909920 6575.2169 4.6522230e+09 0.13952957 0.042157101 -21.808580 49.779872 6577.4475 4.3210677e+09 0.13661379 0.039517402 -21.928623 49.649826 6579.6782 3.9650324e+09 0.13365116 0.036697670 -22.045653 49.522307 6581.9088 3.7088876e+09 0.13070888 0.035321402 -22.146312 49.408518 6584.1395 3.5529508e+09 0.12738690 0.034439532 -22.246971 49.294728 6586.3701 3.4193988e+09 0.12411537 0.033166512 -22.360150 49.166786 6588.6008 3.2481730e+09 0.12117052 0.033179300 -22.475192 49.036739 6590.8314 3.0559949e+09 0.11751988 0.029515491 -22.590233 48.906692 6593.0621 2.8626872e+09 0.11406476 0.027044514 -22.705275 48.776644 6595.2927 2.6682242e+09 0.11042983 0.025653927 -22.815955 48.646597 6597.5234 2.5065208e+09 0.10730885 0.025557573 -22.925995 48.516551 6599.7540 2.3691982e+09 0.10585444 0.024975080 -23.024029 48.400694 6601.9847 2.2450647e+09 0.10549230 0.027509410 -23.120312 48.286906 6604.2153 2.1368647e+09 0.10410381 0.026199120 -23.224680 48.163560 6606.4460 2.0145462e+09 0.10361157 0.026702593 -23.334720 48.033512 6608.6766 1.8839662e+09 0.10101074 0.023714482 -23.444760 47.903465 6610.9073 1.7646690e+09 0.098063930 0.024869838 -23.554800 47.773419 6613.1379 1.6547644e+09 0.097087528 0.023624186 -23.654155 47.652952 6615.3685 1.5679034e+09 0.095716273 0.023262871 -23.746061 47.539162 6617.5992 1.4864208e+09 0.094644010 0.023637911 -23.841963 47.420425 6619.8298 1.4014681e+09 0.093988047 0.024726142 -23.947002 47.290379 6622.0605 1.3163416e+09 0.092776217 0.024741892 -24.052040 47.160332 6624.2911 1.2299659e+09 0.090984567 0.025018155 -24.157078 47.030284 6626.5218 1.1581528e+09 0.089383016 0.025926099 -24.256762 46.905207 6628.7524 1.1057041e+09 0.087766079 0.026008591 -24.344292 46.791419 6630.9831 1.0584174e+09 0.085796085 0.025930724 -24.432187 46.677293 6633.2137 1.0143374e+09 0.084175417 0.026189568 -24.537224 46.547245 6635.4444 9.6470294e+08 0.082393510 0.026466429 -24.642154 46.417197 6637.6750 9.0848894e+08 0.080938885 0.025830805 -24.742191 46.287151 6639.9057 8.5783870e+08 0.080436235 0.025304367 -24.841851 46.157467 6642.1363 8.1306902e+08 0.080271243 0.025157275 -24.925005 46.043678 6644.3670 7.7729189e+08 0.078934172 0.025383268 -25.008159 45.929890 6646.5976 7.4426697e+08 0.077690846 0.026229493 -25.103760 45.800425 6648.8283 7.0867995e+08 0.076546165 0.027518727 -25.203796 45.665376 6651.0589 6.7432295e+08 0.076364344 0.026529313 -25.300140 45.534018 6653.2896 6.3851824e+08 0.076249918 0.027673500 -25.395175 45.403970 6655.5202 6.0779820e+08 0.075018961 0.027825167 -25.481432 45.285935 6657.7509 5.8274237e+08 0.073593951 0.029772080 -25.564585 45.172147 6659.9815 5.5493227e+08 0.072396582 0.031629856 -25.653131 45.050980 6662.2122 5.3355701e+08 0.071055086 0.032925242 -25.748164 44.920932 6664.4428 5.1146917e+08 0.070144578 0.030585906 -25.843199 44.790884 6666.6734 4.8539621e+08 0.070184903 0.027039825 -25.938234 44.660837 6668.9041 4.6016135e+08 0.069136035 0.028270833 -26.030991 44.530791 6671.1347 4.3232115e+08 0.069385254 0.026867268 -26.121024 44.400745 6673.3654 4.0885582e+08 0.069003833 0.028005685 -26.207920 44.278112 6675.5960 3.8908956e+08 0.067110886 0.030939988 -26.291073 44.164322 6677.8267 3.7175026e+08 0.065762594 0.031182999 -26.375403 44.046896 6680.0573 3.5675172e+08 0.065942149 0.029453797 -26.465436 43.911847 6682.2880 3.3813097e+08 0.066710252 0.030644571 -26.554609 43.777657 6684.5186 3.1581274e+08 0.066859829 0.032680410 -26.639639 43.647611 6686.7493 2.9479449e+08 0.065585390 0.034197025 -26.723590 43.520370 6688.9799 2.7421813e+08 0.062696184 0.034011390 -26.802367 43.406579 6691.2106 2.6340694e+08 0.061707810 0.032951582 -26.881145 43.292789 6693.4412 2.5288423e+08 0.060731087 0.031452723 -26.965472 43.164570 6695.6719 2.4231552e+08 0.060357255 0.029736060 -27.050503 43.034524 6697.9025 2.3127727e+08 0.059666942 0.030205480 -27.139977 42.904476 6700.1332 2.1947056e+08 0.058137649 0.030766489 -27.230010 42.774428 6702.3638 2.1022774e+08 0.056885284 0.033167235 -27.315595 42.644382 6704.5945 1.9829039e+08 0.057317874 0.036469464 -27.400626 42.514336 6706.8251 1.9165768e+08 0.057119729 0.039882437 -27.485657 42.379839 6709.0558 1.7967900e+08 0.056591958 0.041097081 -27.570688 42.244790 6711.2864 1.7014699e+08 0.054806634 0.041018079 -27.642355 42.128673 6713.5170 1.6068796e+08 0.052697951 0.045556681 -27.712379 42.014884 6715.7477 1.5264689e+08 0.050828281 0.048143312 -27.791491 41.891250 6717.9783 1.4929121e+08 0.048726840 0.049813753 -27.876521 41.761202 6720.2090 1.4223179e+08 0.047689058 0.050395551 -27.958520 41.631155 6722.4396 1.3179165e+08 0.047386442 0.050061694 -28.038548 41.501109 6724.6703 1.2182040e+08 0.043817692 0.044329324 -28.118577 41.371062 6726.9009 1.1582935e+08 0.041369216 0.040959493 -28.198606 41.241014 6729.1316 1.1174739e+08 0.040977304 0.040957723 -28.278635 41.110967 6731.3622 1.0760992e+08 0.039135369 0.042470933 -28.358664 40.980921 6733.5929 1.0205269e+08 0.037948215 0.047143222 -28.432605 40.860765 6735.8235 96872678. 0.039171788 0.050167667 -28.502629 40.746975 6738.0542 93658881. 0.040570168 0.057619348 -28.575890 40.627926 6740.2848 89168717. 0.040179336 0.064536932 -28.655919 40.497880 6742.5155 84151806. 0.037270410 0.069866792 -28.734326 40.367834 6744.7461 82058594. 0.033327005 0.078370515 -28.809354 40.237788 6746.9768 77525015. 0.028566509 0.067631284 -28.886007 40.106116 6749.2074 73757358. 0.028024758 0.072221143 -28.966036 39.971067 6751.4381 69804351. 0.024380561 0.073896886 -29.044435 39.837647 6753.6687 68726231. 0.021895997 0.075141354 -29.119462 39.707599 6755.8994 64788937. 0.018411713 0.074211034 -29.194489 39.577551 6758.1300 61484732. 0.015020449 0.073980235 -29.269517 39.447504 6760.3607 56359764. -0.0020051159 0.076749019 -29.344544 39.317457 6762.5913 52286042. 0.016097012 0.077097030 -29.419571 39.187409 6764.8219 52537914. 0.051999570 0.079522663 -29.492958 39.057362