# # 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 = 43.054942 km # Date (UTC) = 2012-01-10T10:18:09.772 # Date (julian) = 2455936.92927977 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.4425 1.3234966e+11 0.056692863 0.033019753 -38.528642 46.009788 6504.5308 1.1316415e+11 0.065206119 0.033649451 -38.618777 45.903264 6506.6190 9.7414212e+10 0.073837170 0.034279150 -38.708913 45.796739 6508.7072 8.6059487e+10 0.082844004 0.034908848 -38.799048 45.687532 6510.7954 7.6618543e+10 0.092168167 0.035538546 -38.889182 45.576913 6512.8837 6.8735396e+10 0.10186613 0.036168245 -38.978438 45.467172 6514.9719 6.2463978e+10 0.11207735 0.036797943 -39.064476 45.360647 6517.0601 5.7090499e+10 0.12274714 0.037427641 -39.150514 45.254123 6519.1483 5.1773045e+10 0.13366173 0.038057340 -39.246063 45.135826 6521.2366 4.6763186e+10 0.14485074 0.038687038 -39.344396 45.014083 6523.3248 4.2057357e+10 0.15252934 0.039259610 -39.434885 44.902049 6525.4130 3.8037601e+10 0.15827067 0.039735079 -39.520923 44.795524 6527.5012 3.4783203e+10 0.16348070 0.041080372 -39.606961 44.688193 6529.5895 3.1854968e+10 0.16762445 0.043174737 -39.692999 44.577572 6531.6777 2.9263784e+10 0.17116377 0.046215051 -39.779037 44.466951 6533.7659 2.6946144e+10 0.17348417 0.047845074 -39.861976 44.359429 6535.8541 2.4851415e+10 0.17388681 0.047853780 -39.943918 44.252907 6537.9424 2.2955634e+10 0.17547012 0.049129503 -40.027152 44.146384 6540.0306 2.1173059e+10 0.17570504 0.050868547 -40.113190 44.039859 6542.1188 1.9536755e+10 0.17347523 0.051047341 -40.199228 43.933334 6544.2070 1.7996516e+10 0.17129481 0.051812290 -40.281693 43.826798 6546.2952 1.6562411e+10 0.16904627 0.052707468 -40.363646 43.720259 6548.3835 1.5268047e+10 0.16744975 0.053782164 -40.443814 43.613727 6550.4717 1.4181092e+10 0.16587537 0.055103468 -40.521658 43.507205 6552.5599 1.3202879e+10 0.16432738 0.055445835 -40.599501 43.400682 6554.6481 1.2235521e+10 0.16237612 0.054845981 -40.693050 43.274382 6556.7364 1.1270011e+10 0.16032085 0.053904866 -40.786700 43.147956 6558.8246 1.0334950e+10 0.15796470 0.052536651 -40.866789 43.038605 6560.9128 9.5474162e+09 0.15545740 0.051451289 -40.944634 42.932081 6563.0010 8.8869345e+09 0.15339170 0.049927165 -41.022478 42.825557 6565.0893 8.3078374e+09 0.15127299 0.048217038 -41.100322 42.719034 6567.1775 7.7609846e+09 0.14925237 0.046467118 -41.178166 42.612511 6569.2657 7.2667997e+09 0.14726283 0.044869718 -41.256009 42.505987 6571.3539 6.8037302e+09 0.14567633 0.044406609 -41.333853 42.399463 6573.4422 6.3785512e+09 0.14356313 0.043302660 -41.411697 42.290745 6575.5304 6.0030206e+09 0.14119045 0.041842568 -41.489542 42.180125 6577.6186 5.6485238e+09 0.13849132 0.039248692 -41.566999 42.069895 6579.7068 5.3146184e+09 0.13543892 0.036681922 -41.640746 41.963370 6581.7951 4.9934980e+09 0.13253120 0.035355856 -41.714493 41.856846 6583.8833 4.6832095e+09 0.12957905 0.034574591 -41.790919 41.750323 6585.9715 4.3862271e+09 0.12673075 0.033194080 -41.868763 41.643800 6588.0597 4.1089365e+09 0.12471109 0.033359985 -41.945733 41.537276 6590.1479 3.8481665e+09 0.12235258 0.030786859 -42.019480 41.430752 6592.2362 3.6142891e+09 0.11999830 0.027844130 -42.093227 41.324228 6594.3244 3.4059640e+09 0.11780966 0.025994445 -42.166983 41.214526 6596.4126 3.2227544e+09 0.11522964 0.025725398 -42.240741 41.103889 6598.5008 3.0393481e+09 0.11344846 0.025168044 -42.316439 40.989563 6600.5891 2.8419829e+09 0.11320808 0.026200891 -42.396040 40.867820 6602.6773 2.6491194e+09 0.11249920 0.026938659 -42.474491 40.749067 6604.7655 2.4733893e+09 0.11161868 0.026525815 -42.548238 40.642543 6606.8537 2.3337579e+09 0.11053135 0.025969819 -42.621985 40.536019 6608.9420 2.2112065e+09 0.10747460 0.023707466 -42.692637 40.429496 6611.0302 2.0991666e+09 0.10441732 0.024939205 -42.762288 40.322973 6613.1184 1.9905427e+09 0.10325290 0.023617036 -42.833229 40.215159 6615.2066 1.8901076e+09 0.10173226 0.023257889 -42.906976 40.104539 6617.2949 1.7961639e+09 0.10024210 0.023537009 -42.980723 39.993918 6619.3831 1.6968410e+09 0.099276991 0.024618346 -43.050887 39.886880 6621.4713 1.6097594e+09 0.097965858 0.024933230 -43.120537 39.780357 6623.5595 1.5270069e+09 0.095910038 0.024699123 -43.188410 39.673833 6625.6478 1.4476447e+09 0.094321568 0.026170570 -43.253963 39.567309 6627.7360 1.3710005e+09 0.092103227 0.025601108 -43.319516 39.460784 6629.8242 1.2930353e+09 0.090438432 0.025960086 -43.389137 39.354262 6631.9124 1.2208934e+09 0.088319785 0.026023450 -43.458788 39.247739 6634.0007 1.1569721e+09 0.086621856 0.026326890 -43.528437 39.141215 6636.0889 1.1004873e+09 0.085152904 0.026515239 -43.598087 39.034691 6638.1771 1.0458838e+09 0.084342145 0.025663927 -43.667281 38.928167 6640.2653 1.0015674e+09 0.084529780 0.025238189 -43.732834 38.821644 6642.3535 9.6169242e+08 0.084568496 0.025166164 -43.798387 38.715120 6644.4418 9.1466010e+08 0.083703779 0.025391352 -43.870218 38.595256 6646.5300 8.6475817e+08 0.082804751 0.026194489 -43.945137 38.468830 6648.6182 8.0854868e+08 0.081907333 0.027378121 -44.015054 38.353037 6650.7064 7.5788386e+08 0.081596980 0.026416961 -44.080616 38.246498 6652.7947 7.2152955e+08 0.081253013 0.027469166 -44.146178 38.139961 6654.8829 6.8800424e+08 0.080190766 0.027660107 -44.211731 38.033437 6656.9711 6.5784129e+08 0.078306557 0.028875758 -44.277284 37.926913 6659.0593 6.2813353e+08 0.076778248 0.031822221 -44.342836 37.820389 6661.1476 6.0110292e+08 0.075470119 0.032610105 -44.408389 37.713867 6663.2358 5.7023855e+08 0.074289015 0.032417871 -44.473071 37.607344 6665.3240 5.4395549e+08 0.073797097 0.028016231 -44.534528 37.500819 6667.4122 5.1871511e+08 0.073210133 0.027254878 -44.595984 37.394294 6669.5005 4.9063420e+08 0.072248082 0.027841699 -44.667833 37.276022 6671.5887 4.6661140e+08 0.072107184 0.026873738 -44.742752 37.154279 6673.6769 4.3702183e+08 0.071463020 0.028471577 -44.809104 37.042220 6675.7651 4.1480062e+08 0.069348763 0.031263858 -44.870559 36.935695 6677.8534 3.9602529e+08 0.068061610 0.031145089 -44.932014 36.829171 6679.9416 3.7741479e+08 0.068151155 0.029489695 -44.993470 36.722649 6682.0298 3.5830235e+08 0.068957575 0.030447311 -45.054927 36.616126 6684.1180 3.4043054e+08 0.069302990 0.032660081 -45.116383 36.509603 6686.2062 3.2500328e+08 0.068758156 0.033881082 -45.177840 36.403080 6688.2945 3.1412182e+08 0.066372434 0.033853164 -45.239296 36.295270 6690.3827 3.0307095e+08 0.064886760 0.033072007 -45.300751 36.184649 6692.4709 2.8869637e+08 0.064072486 0.032218479 -45.362206 36.074029 6694.5591 2.7569589e+08 0.063420733 0.030477359 -45.431330 35.953695 6696.6474 2.5998381e+08 0.063182312 0.029944753 -45.501567 35.831950 6698.7356 2.4372076e+08 0.062168595 0.031227500 -45.562306 35.721433 6700.8238 2.3274117e+08 0.060458594 0.031278764 -45.619664 35.614910 6702.9120 2.2250123e+08 0.059988009 0.033604997 -45.678239 35.508387 6705.0003 2.1504993e+08 0.060102058 0.036669072 -45.739695 35.401863 6707.0885 2.0685666e+08 0.059648883 0.040174151 -45.801152 35.295338 6709.1767 1.9122295e+08 0.059005478 0.041020147 -45.866116 35.175786 6711.2649 1.7740941e+08 0.057219471 0.040993655 -45.931670 35.054043 6713.3532 1.6970359e+08 0.055119664 0.044963920 -45.991327 34.943251 6715.4414 1.6101927e+08 0.053174260 0.047830021 -46.048694 34.836711 6717.5296 1.5423129e+08 0.051032832 0.049841510 -46.106058 34.730176 6719.6178 1.4664942e+08 0.049276712 0.050782856 -46.163417 34.623653 6721.7061 1.3667820e+08 0.049346312 0.050516636 -46.220775 34.517130 6723.7943 1.2932506e+08 0.047436739 0.049811926 -46.285011 34.401764 6725.8825 1.1973507e+08 0.043396430 0.041024764 -46.350565 34.284703 6727.9707 1.1435399e+08 0.042539188 0.039667103 -46.410353 34.175056 6730.0589 1.1173295e+08 0.041209465 0.040459728 -46.467712 34.068533 6732.1472 1.0971333e+08 0.039622166 0.043767303 -46.527225 33.958011 6734.2354 1.0622785e+08 0.038851113 0.049339436 -46.592781 33.836265 6736.3236 1.0090861e+08 0.040480860 0.051578471 -46.656774 33.716455 6738.4118 94795454. 0.041428497 0.059588482 -46.710034 33.609933 6740.5001 90607180. 0.040755573 0.064904642 -46.763295 33.503410 6742.5883 85073105. 0.037780075 0.070044235 -46.824993 33.386439 6744.6765 82515857. 0.033942947 0.078316680 -46.890547 33.264695 6746.7647 80864696. 0.030105661 0.070096326 -46.949331 33.151333 6748.8530 77885179. 0.029192580 0.071504369 -47.002594 33.044811 6750.9412 76188215. 0.026272903 0.073611246 -47.056692 32.936614 6753.0294 71541989. 0.023221447 0.073072470 -47.117565 32.814870 6755.1176 67959378. 0.021027493 0.074553770 -47.178437 32.693125 6757.2059 67058392. 0.018299635 0.076115329 -47.231895 32.586211 6759.2941 66276164. 0.018532782 0.075890921 -47.285157 32.479688 6761.3823 67271778. 0.018940514 0.077999811 -47.342479 32.367542 6763.4705 64007896. 0.019666932 0.077870775 -47.403350 32.250481 6765.5588 58872685. -0.0012737171 0.079633196 -47.461193 32.137613 6767.6470 56733861. 0.015463264 0.081251318 -47.514455 32.031089 6769.7352 54491035. 0.052678886 0.086237449 -47.567717 31.924566