# # 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 = 47.010635 km # Date (UTC) = 2014-01-26T09:35:06.053 # Date (julian) = 2456683.89937561 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6488.8522 1.0564017e+11 0.018243362 0.028921607 -16.408853 59.505755 6490.6062 9.4143344e+10 0.023300487 0.029450523 -16.583223 59.391039 6492.3602 8.4890387e+10 0.028000711 0.029979439 -16.784141 59.255581 6494.1142 7.6909900e+10 0.032336584 0.030508354 -16.987885 59.117432 6495.8682 6.9482142e+10 0.036269530 0.031037270 -17.191630 58.974259 6497.6222 6.3977664e+10 0.039773599 0.031566186 -17.384888 58.838827 6499.3762 5.9671293e+10 0.043088957 0.032095101 -17.550048 58.724133 6501.1302 5.6300466e+10 0.046571926 0.032624017 -17.717746 58.607324 6502.8842 5.3285803e+10 0.050421770 0.033152933 -17.910476 58.469659 6504.6382 5.0588769e+10 0.054950857 0.033681849 -18.094337 58.338329 6506.3922 4.8517679e+10 0.060532716 0.034210764 -18.254941 58.223612 6508.1462 4.6962982e+10 0.067511298 0.034739680 -18.418122 58.106141 6509.9002 4.5309347e+10 0.075818038 0.035268596 -18.605347 57.962970 6511.6542 4.3187186e+10 0.085250325 0.035797512 -18.783799 57.827795 6513.4082 4.0933273e+10 0.095982984 0.036326427 -18.939783 57.713102 6515.1622 3.8843891e+10 0.10803936 0.036855343 -19.095769 57.597942 6516.9162 3.7021268e+10 0.12133593 0.037384259 -19.251784 57.478635 6518.6703 3.4945793e+10 0.13542781 0.037913174 -19.407799 57.359328 6520.4243 3.2484143e+10 0.14877472 0.038442090 -19.582431 57.218024 6522.1783 2.9922791e+10 0.16010086 0.038963931 -19.755535 57.077863 6523.9323 2.7568071e+10 0.16500902 0.039410173 -19.902372 56.963147 6525.6863 2.5692988e+10 0.16816779 0.039703892 -20.049209 56.848430 6527.4403 2.4304025e+10 0.17172121 0.041036119 -20.196046 56.729463 6529.1943 2.2920861e+10 0.17325419 0.042545265 -20.342883 56.610159 6530.9483 2.1264330e+10 0.17428962 0.045156288 -20.507525 56.473044 6532.7023 1.9529823e+10 0.17635848 0.047270887 -20.678191 56.329905 6534.4563 1.7761921e+10 0.17611792 0.048072203 -20.822406 56.208951 6536.2103 1.6327195e+10 0.17460019 0.047978669 -20.964654 56.089646 6537.9643 1.5282567e+10 0.17503130 0.049139856 -21.103453 55.970341 6539.7183 1.4376885e+10 0.17462897 0.050513135 -21.241113 55.851035 6541.4723 1.3565667e+10 0.17286878 0.051173358 -21.378773 55.731729 6543.2263 1.2802342e+10 0.17159929 0.051441295 -21.516434 55.612424 6544.9803 1.2070264e+10 0.17083579 0.052439615 -21.654094 55.493119 6546.7343 1.1453653e+10 0.16914752 0.053068771 -21.791754 55.373813 6548.4883 1.0906617e+10 0.16774398 0.053813483 -21.927452 55.254507 6550.2424 1.0418877e+10 0.16690037 0.055046042 -22.055935 55.135203 6551.9964 9.9254284e+09 0.16565798 0.055585488 -22.185490 55.014890 6553.7504 9.3542850e+09 0.16364752 0.054957869 -22.345143 54.866246 6555.5044 8.7747875e+09 0.16208347 0.054429574 -22.498003 54.723997 6557.2584 8.2072250e+09 0.16036455 0.053704157 -22.626486 54.604692 6559.0124 7.7112519e+09 0.15770939 0.052385784 -22.754969 54.485388 6560.7664 7.2761261e+09 0.15541899 0.051583314 -22.883451 54.366082 6562.5204 6.8831077e+09 0.15350115 0.050384732 -23.011934 54.246776 6564.2744 6.5523445e+09 0.15118898 0.048647240 -23.136473 54.123526 6566.0284 6.2356782e+09 0.14932294 0.047166817 -23.260367 53.999632 6567.7824 5.8998761e+09 0.14836879 0.045955641 -23.384261 53.878859 6569.5364 5.5463088e+09 0.14713808 0.044887337 -23.508155 53.759555 6571.2904 5.2011342e+09 0.14599857 0.044423956 -23.629739 53.640261 6573.0444 4.9299319e+09 0.14475891 0.043621831 -23.749020 53.520979 6574.7984 4.7458717e+09 0.14305670 0.042471521 -23.868309 53.400216 6576.5524 4.5986974e+09 0.14098073 0.040735528 -23.987615 53.276321 6578.3064 4.4158963e+09 0.13888373 0.038165707 -24.106921 53.153078 6580.0604 4.1729089e+09 0.13719209 0.036464891 -24.226226 53.033773 6581.8145 3.9024246e+09 0.13542854 0.035349981 -24.345531 52.914469 6583.5685 3.6797114e+09 0.13379416 0.034733938 -24.444643 52.807786 6585.3225 3.5048392e+09 0.13217828 0.033712970 -24.542968 52.701594 6587.0765 3.3922953e+09 0.13029145 0.033175312 -24.648178 52.589895 6588.8305 3.2626561e+09 0.12835165 0.033102591 -24.762895 52.470590 6590.5845 3.1109052e+09 0.12618890 0.029974841 -24.876507 52.350181 6592.3385 2.9654151e+09 0.12402444 0.027744753 -24.986635 52.226287 6594.0925 2.8150131e+09 0.12168453 0.026121750 -25.097044 52.102393 6595.8465 2.7035928e+09 0.11889112 0.025711355 -25.211761 51.978499 6597.6005 2.5887123e+09 0.11677792 0.025533231 -25.326477 51.854605 6599.3545 2.4599509e+09 0.11524997 0.024951052 -25.437127 51.734780 6601.1085 2.3398639e+09 0.11507859 0.027096794 -25.547233 51.615499 6602.8625 2.2360634e+09 0.11434076 0.026780594 -25.654131 51.492978 6604.6165 2.1380361e+09 0.11362533 0.026437349 -25.759670 51.369084 6606.3705 2.0567887e+09 0.11307187 0.026838131 -25.857321 51.254450 6608.1245 1.9865204e+09 0.11110859 0.023729079 -25.947781 51.148258 6609.8785 1.9305144e+09 0.10861512 0.023966900 -26.038241 51.042066 6611.6325 1.8821090e+09 0.10628243 0.024555077 -26.143487 50.923015 6613.3866 1.8164870e+09 0.10545622 0.023715418 -26.249027 50.803708 6615.1406 1.7454408e+09 0.10438124 0.023255856 -26.354566 50.680726 6616.8946 1.6667333e+09 0.10320235 0.023422701 -26.460105 50.556832 6618.6486 1.5913461e+09 0.10263138 0.024260543 -26.562790 50.432939 6620.4026 1.5181310e+09 0.10203339 0.024896927 -26.663740 50.309047 6622.1566 1.4453520e+09 0.10093139 0.024716316 -26.758305 50.192990 6623.9106 1.3832708e+09 0.099196511 0.024829184 -26.844832 50.086798 6625.6646 1.3246929e+09 0.098241450 0.026190662 -26.931360 49.980606 6627.4186 1.2751514e+09 0.096342200 0.025478508 -27.030870 49.862609 6629.1726 1.2280430e+09 0.095143611 0.026077898 -27.131820 49.743303 6630.9266 1.1802252e+09 0.093476254 0.025930585 -27.229449 49.620708 6632.6806 1.1418783e+09 0.092063161 0.026113956 -27.325792 49.496838 6634.4346 1.1047034e+09 0.090442978 0.026358546 -27.422145 49.372956 6636.1886 1.0598912e+09 0.088917123 0.026476502 -27.518506 49.249062 6637.9426 1.0123232e+09 0.088046149 0.025699740 -27.609886 49.131573 6639.6966 9.6643825e+08 0.087775134 0.025379081 -27.692481 49.025382 6641.4506 9.2508819e+08 0.088194559 0.025149831 -27.775075 48.919191 6643.2046 8.9282120e+08 0.087784712 0.025223518 -27.868949 48.798496 6644.9587 8.5376960e+08 0.087130982 0.025447216 -27.965310 48.674602 6646.7127 8.1095118e+08 0.086273031 0.026289043 -28.058735 48.553645 6648.4667 7.7310679e+08 0.085501163 0.027276671 -28.150509 48.434338 6650.2207 7.3571045e+08 0.085193194 0.026305755 -28.236241 48.321074 6651.9747 7.1293140e+08 0.084682057 0.027231114 -28.314901 48.214883 6653.7287 6.9371007e+08 0.084096435 0.027897700 -28.393561 48.108691 6655.4827 6.6804546e+08 0.082811470 0.027809663 -28.484261 47.986247 6657.2367 6.4026568e+08 0.081362276 0.029175667 -28.576035 47.862355 6658.9907 6.1026501e+08 0.080043147 0.031818101 -28.655214 47.751541 6660.7447 5.9032144e+08 0.078949942 0.032302897 -28.729941 47.645349 6662.4987 5.7337651e+08 0.077766077 0.032764466 -28.808011 47.535687 6664.2527 5.5340235e+08 0.076641132 0.031281416 -28.899766 47.411817 6666.0067 5.3159241e+08 0.076619103 0.026909905 -28.991446 47.287946 6667.7607 5.0371982e+08 0.076025858 0.027382885 -29.078630 47.164052 6669.5147 4.8235955e+08 0.075149633 0.027827038 -29.165815 47.040158 6671.2687 4.6167558e+08 0.075027244 0.026869178 -29.242570 46.931086 6673.0227 4.4323772e+08 0.074590832 0.027493230 -29.317297 46.824894 6674.7767 4.3207561e+08 0.073159336 0.029610029 -29.394344 46.713485 6676.5308 4.1547570e+08 0.071184181 0.032055792 -29.476939 46.589591 6678.2848 3.9595907e+08 0.070613127 0.030746155 -29.560064 46.465697 6680.0388 3.7625358e+08 0.071061055 0.029449787 -29.647249 46.341803 6681.7928 3.5320232e+08 0.071862119 0.030265559 -29.734433 46.217909 6683.5468 3.4048513e+08 0.072238384 0.031989887 -29.806274 46.110587 6685.3008 3.3281262e+08 0.072012957 0.033022537 -29.877069 46.004395 6687.0548 3.2225178e+08 0.070531217 0.034312345 -29.952509 45.891236 6688.8088 3.1391499e+08 0.068219403 0.033971887 -30.035105 45.767341 6690.5628 3.0321034e+08 0.067386328 0.033051366 -30.114330 45.647240 6692.3168 2.9314418e+08 0.066612296 0.032397444 -30.181191 45.541050 6694.0708 2.8499104e+08 0.065778436 0.031161784 -30.248053 45.434859 6695.8248 2.7596840e+08 0.065742504 0.029707965 -30.325484 45.319859 6697.5788 2.6435285e+08 0.065175699 0.030164516 -30.408080 45.200552 6699.3328 2.5837835e+08 0.063923785 0.031283329 -30.488408 45.078999 6701.0868 2.4637409e+08 0.062438279 0.031536853 -30.566400 44.955130 6702.8408 2.3683013e+08 0.062186017 0.033548143 -30.640911 44.836789 6704.5948 2.3182848e+08 0.062248287 0.036469653 -30.707772 44.730597 6706.3488 2.2407213e+08 0.062050990 0.039053547 -30.774634 44.624405 6708.1029 2.2076612e+08 0.061679837 0.040155582 -30.850079 44.504580 6709.8569 2.1295435e+08 0.060689129 0.040587539 -30.928086 44.380687 6711.6109 2.0422951e+08 0.058952572 0.041387230 -30.999507 44.267254 6713.3649 1.9963363e+08 0.057222647 0.045006283 -31.066369 44.161062 6715.1189 1.9571777e+08 0.055616564 0.047500172 -31.133547 44.054015 6716.8729 1.8823979e+08 0.053936076 0.049687035 -31.206966 43.930121 6718.6269 1.8235886e+08 0.052090073 0.050788744 -31.280386 43.806226 6720.3809 1.6941960e+08 0.052046198 0.050375633 -31.357791 43.682332 6722.1349 1.5862554e+08 0.052007221 0.050438434 -31.435798 43.558438 6723.8889 1.5809263e+08 0.050260038 0.049864701 -31.503404 43.446755 6725.6429 1.5291796e+08 0.046682933 0.041174425 -31.566334 43.340563 6727.3969 1.5126866e+08 0.045649398 0.040431582 -31.630806 43.231765 6729.1509 1.4189686e+08 0.045288792 0.040944835 -31.704225 43.107871 6730.9049 1.3197674e+08 0.043832073 0.041619667 -31.777643 42.983977 6732.6589 1.2774555e+08 0.042748076 0.043861516 -31.837102 42.877217 6734.4129 1.2657934e+08 0.042228193 0.049328754 -31.896098 42.771024 6736.1669 1.2720143e+08 0.043624781 0.050986144 -31.961222 42.657313 6737.9209 1.2315531e+08 0.044626036 0.057069270 -32.034626 42.533444 6739.6750 1.1942915e+08 0.044562885 0.063652567 -32.106906 42.409568 6741.4290 1.1093095e+08 0.043124396 0.066982109 -32.175737 42.285674 6743.1830 1.0488164e+08 0.039854632 0.072281719 -32.244176 42.162954 6744.9370 98468688. 0.037150313 0.078518135 -32.307104 42.056764 6746.6910 98704390. 0.033779972 0.070953905 -32.370032 41.950574 6748.4450 99665852. 0.032640065 0.069357965 -32.436051 41.835111 6750.1990 99966212. 0.029940087 0.072343911 -32.504880 41.711217 6751.9530 96357290. 0.027343455 0.074114602 -32.573710 41.587323 6753.7070 89948040. 0.026371386 0.075265266 -32.642540 41.463429 6755.4610 85172879. 0.024492273 0.074403224 -32.709096 41.343109 6757.2150 82427578. 0.022578705 0.076087559 -32.764159 41.240848 6758.9690 79283905. 0.023344423 0.075754433 -32.819221 41.138588 6760.7230 73559345. 0.023394659 0.077440039 -32.882856 41.022859 6762.4770 69443159. 0.027401662 0.077281362 -32.951687 40.898967 6764.2310 63354543. 0.029088389 0.079494354 -33.018483 40.775074 6765.9850 60585758. 0.029490786 0.079711015 -33.082724 40.651180 6767.7390 59735666. 0.024720872 0.081148229 -33.145579 40.531960 6769.4930 57212957. 0.0054369186 0.085650121 -33.204574 40.425768 6771.2471 54383510. 0.014583664 0.089904356 -33.263568 40.319577 6773.0011 51523876. 0.039984448 0.094158590 -33.326339 40.200631