# # 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 = 51.831352 km # Date (UTC) = 2012-01-28T10:17:09.269 # Date (julian) = 2455954.92857950 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.2587 1.2682951e+11 0.057024781 0.032964328 89.263593 56.946663 6504.5378 1.0949772e+11 0.066632956 0.033651569 89.485347 56.760680 6506.8168 9.4032814e+10 0.076375939 0.034338810 89.707144 56.574654 6509.0959 8.1080154e+10 0.086353888 0.035026050 89.928947 56.385109 6511.3749 7.0594474e+10 0.096684031 0.035713291 90.150075 56.192599 6513.6540 6.1670048e+10 0.10735622 0.036400531 90.364674 56.006616 6515.9330 5.3905080e+10 0.11835988 0.037087772 90.579310 55.815623 6518.2121 4.7225878e+10 0.12974744 0.037775012 90.793960 55.624570 6520.4911 4.1615383e+10 0.14158449 0.038462253 91.008605 55.438540 6522.7702 3.6979252e+10 0.15179446 0.039118929 91.210326 55.246113 6525.0492 3.2983517e+10 0.15872977 0.039776598 91.414235 55.052953 6527.3283 2.9326047e+10 0.16366215 0.040954793 91.620979 54.859769 6529.6073 2.6145938e+10 0.16801163 0.043203176 91.821318 54.666584 6531.8864 2.3627468e+10 0.17220516 0.046518783 91.993828 54.500386 6534.1654 2.1585898e+10 0.17448408 0.047990827 92.155985 54.344229 6536.4445 1.9799764e+10 0.17550945 0.048188163 92.356275 54.151094 6538.7235 1.8013493e+10 0.17659678 0.049508987 92.547554 53.957928 6541.0025 1.6333619e+10 0.17598728 0.051325703 92.727715 53.772288 6543.2816 1.4991052e+10 0.17440910 0.051455799 92.888694 53.611307 6545.5606 1.3854626e+10 0.17210986 0.052460590 93.063628 53.432387 6547.8397 1.2798459e+10 0.17003761 0.053606682 93.248510 53.239211 6550.1187 1.1736826e+10 0.16817577 0.055015089 93.427341 53.046073 6552.3978 1.0807016e+10 0.16607952 0.055486645 93.583500 52.877421 6554.6768 9.9794956e+09 0.16379102 0.054846583 93.735068 52.713728 6556.9559 9.2259325e+09 0.16149173 0.053872594 93.913942 52.520544 6559.2349 8.5719022e+09 0.15858948 0.052360666 94.072342 52.345378 6561.5140 7.9521108e+09 0.15578404 0.051119409 94.221610 52.178191 6563.7930 7.4030023e+09 0.15284573 0.049011031 94.393287 51.985052 6566.0721 6.8983777e+09 0.15037001 0.047142119 94.547487 51.811575 6568.3511 6.3959742e+09 0.14866936 0.045448909 94.690579 51.650595 6570.6302 5.9702458e+09 0.14689848 0.044656477 94.853732 51.459531 6572.9092 5.5865040e+09 0.14488348 0.043709479 95.003579 51.283625 6575.1883 5.2376942e+09 0.14240281 0.042185834 95.140712 51.122645 6577.4673 4.9546289e+09 0.13939587 0.039486362 95.277842 50.956542 6579.7463 4.6728061e+09 0.13620179 0.036660199 95.419960 50.784829 6582.0254 4.3863485e+09 0.13329409 0.035286886 95.584487 50.591692 6584.3044 4.1165055e+09 0.13035620 0.034349672 95.722853 50.423769 6586.5835 3.8856847e+09 0.12743174 0.033163754 95.854019 50.262152 6588.8625 3.7053944e+09 0.12435470 0.033091885 95.985189 50.095210 6591.1416 3.5030325e+09 0.12057922 0.029042155 96.124559 49.916992 6593.4206 3.2824339e+09 0.11738835 0.026711166 96.274200 49.724841 6595.6997 3.0684609e+09 0.11407966 0.025696129 96.405343 49.563893 6597.9787 2.8856523e+09 0.11187720 0.025413881 96.534382 49.400820 6600.2578 2.7540777e+09 0.11126925 0.025519796 96.659589 49.233878 6602.5368 2.6429960e+09 0.11054481 0.027058538 96.780759 49.070973 6604.8159 2.5198133e+09 0.10964394 0.026555707 96.900126 48.909842 6607.0949 2.3807767e+09 0.10859186 0.025519588 97.050261 48.709654 6609.3740 2.2318953e+09 0.10569485 0.023817014 97.181833 48.533025 6611.6530 2.0983421e+09 0.10320536 0.024542034 97.301076 48.372045 6613.9320 1.9993735e+09 0.10221344 0.023915561 97.420301 48.211094 6616.2111 1.9142685e+09 0.10065625 0.023315430 97.539530 48.048661 6618.4901 1.8304030e+09 0.099963106 0.024140912 97.658772 47.881720 6620.7692 1.7445829e+09 0.099115862 0.025015068 97.774616 47.718178 6623.0482 1.6704725e+09 0.097497124 0.024509697 97.887900 47.557197 6625.3273 1.6054503e+09 0.095830357 0.025788152 98.001180 47.390890 6627.6063 1.5266208e+09 0.093762962 0.025551026 98.119354 47.218280 6629.8854 1.4423988e+09 0.092393257 0.025949026 98.255300 47.025099 6632.1644 1.3565481e+09 0.090509661 0.026052061 98.372682 46.853416 6634.4435 1.2853612e+09 0.088844151 0.026359192 98.485107 46.687340 6636.7225 1.2297820e+09 0.087028801 0.026269169 98.592427 46.526360 6639.0016 1.1726664e+09 0.085581279 0.025627516 98.702510 46.362616 6641.2806 1.1164030e+09 0.085948944 0.025149253 98.815790 46.195673 6643.5597 1.0670128e+09 0.084904360 0.025277120 98.924384 46.033419 6645.8387 1.0215226e+09 0.083643120 0.025844587 99.031054 45.871788 6648.1178 9.7642493e+08 0.082602350 0.027043109 99.132415 45.704846 6650.3968 9.3545738e+08 0.082022252 0.026346076 99.236350 45.537905 6652.6758 8.9096240e+08 0.081775335 0.027436474 99.343670 45.370963 6654.9549 8.5040157e+08 0.080838415 0.027629432 99.446490 45.208521 6657.2339 8.1031438e+08 0.079056877 0.029172476 99.547845 45.047081 6659.5130 7.6879921e+08 0.077710304 0.031727589 99.649182 44.880171 6661.7920 7.2939947e+08 0.076402055 0.032938350 99.750526 44.715631 6664.0711 6.9367326e+08 0.075137363 0.031946002 99.851884 44.554649 6666.3501 6.6169707e+08 0.075273757 0.026976822 99.953244 44.389361 6668.6292 6.3156680e+08 0.074269311 0.028027550 100.05461 44.222690 6670.9082 6.0214756e+08 0.074206118 0.026907867 100.15596 44.061710 6673.1873 5.7244677e+08 0.073828011 0.027739293 100.25512 43.898535 6675.4663 5.4613369e+08 0.071942721 0.030691525 100.35052 43.731593 6677.7454 5.2131755e+08 0.070406761 0.031298605 100.44591 43.568771 6680.0244 5.0004013e+08 0.070544510 0.029446688 100.54131 43.407709 6682.3035 4.7810889e+08 0.071293946 0.030656396 100.63668 43.240801 6684.5825 4.5641392e+08 0.071373981 0.032683651 100.73207 43.075885 6686.8616 4.4003890e+08 0.069885926 0.034262349 100.82746 42.914904 6689.1406 4.2098956e+08 0.067013377 0.033889463 100.92286 42.749995 6691.4196 4.0018551e+08 0.066085591 0.032902254 101.01825 42.583053 6693.6987 3.7847941e+08 0.065181108 0.031364394 101.10780 42.421964 6695.9777 3.5821404e+08 0.065100524 0.029679874 101.19334 42.266431 6698.2568 3.4654673e+08 0.064333988 0.030570286 101.27000 42.123341 6700.5358 3.3429801e+08 0.062797381 0.031065161 101.35109 41.974030 6702.8149 3.2417144e+08 0.062289507 0.033527416 101.44053 41.813050 6705.0939 3.1257365e+08 0.062791947 0.036835590 101.52995 41.648095 6707.3730 3.0044920e+08 0.062717487 0.040133398 101.61937 41.481187 6709.6520 2.9035073e+08 0.062099876 0.040717826 101.70880 41.320163 6711.9311 2.7669905e+08 0.060291347 0.041751533 101.79823 41.157300 6714.2101 2.6326756e+08 0.058436687 0.047319205 101.88766 40.990359 6716.4892 2.5181822e+08 0.056857625 0.049121851 101.97329 40.827223 6718.7682 2.4195369e+08 0.054711759 0.051008842 102.05676 40.666243 6721.0473 2.3177169e+08 0.055202417 0.050318137 102.14596 40.499533 6723.3263 2.2116267e+08 0.054183587 0.049550929 102.23370 40.334284 6725.6054 2.0780854e+08 0.050322618 0.041197886 102.31717 40.173304 6727.8844 1.9934769e+08 0.049559602 0.039782115 102.40065 40.008707 6730.1634 1.9194891e+08 0.048375853 0.040603004 102.48412 39.841765 6732.4425 1.8390874e+08 0.046959911 0.043821670 102.56757 39.680394 6734.7215 1.7546968e+08 0.046789293 0.049310187 102.64953 39.517934 6737.0006 1.6546804e+08 0.048699828 0.054137429 102.72704 39.350990 6739.2796 1.6127804e+08 0.049196081 0.063168768 102.80798 39.187474 6741.5587 1.5707494e+08 0.047343570 0.067352077 102.89145 39.026493 6743.8377 1.5188910e+08 0.042452472 0.076698718 102.96957 38.860163 6746.1168 1.4423926e+08 0.040462023 0.077629659 103.04839 38.694535 6748.3958 1.3443657e+08 0.036707255 0.069099323 103.13186 38.533554 6750.6749 1.2702292e+08 0.033655268 0.073156494 103.21209 38.369337 6752.9539 1.2362062e+08 0.030471043 0.073030620 103.28961 38.202395 6755.2330 1.1925297e+08 0.028035284 0.074503207 103.36710 38.040642 6757.5120 1.1281533e+08 0.025595165 0.075186248 103.44251 37.884018 6759.7911 1.0632002e+08 0.025901935 0.076010849 103.50894 37.746039 6762.0701 1.0010003e+08 0.028996353 0.077937764 103.57794 37.601355 6764.3491 99031264. 0.031442922 0.079500012 103.65545 37.434414 6766.6282 99201174. 0.031614811 0.081134738 103.72966 37.270776 6768.9072 94746371. 0.026240616 0.084120499 103.80120 37.109796 6771.1863 89410726. 0.021175129 0.089756975 103.87798 36.948816 6773.4653 85994115. 0.016208230 0.095284666 103.95430 36.786644 6775.7444 81165594. 0.011091283 0.10081236 104.02584 36.619703 6778.0234 79816610. 0.0061947750 0.10634005 104.10050 36.455877 6780.3025 76435883. 0.0010366726 0.11186774 104.17802 36.294896 6782.5815 72542487. -0.0043676525 0.11739543 104.25047 36.133942 6784.8606 73961248. -0.0092810580 0.12292312 104.32441 35.966383 6787.1396 70038293. -0.015485215 0.12845081 104.41027 35.766046 6789.4187 68507706. -0.022383919 0.13397850 104.48510 35.596020 6791.6977 66178103. -0.032856514 0.13950619 104.55665 35.435039 6793.9768 62621842. -0.076249310 0.14503388 104.62820 35.274059 6796.2558 59457362. -0.047585331 0.15056158 104.69726 35.110601 6798.5349 51855208. 0.027132236 0.15608927 104.76285 34.943659