# # 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 = 45.703409 km # Date (UTC) = 2010-12-24T10:05:11.821 # Date (julian) = 2455554.92027571 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.6239 1.7022949e+11 0.066629211 0.033375977 99.784286 37.344037 6506.2549 1.2745969e+11 0.077989337 0.034169362 99.862289 37.221073 6508.8860 1.0048399e+11 0.089568946 0.034962747 99.940292 37.097185 6511.5170 8.2083620e+10 0.10145063 0.035756133 100.01830 36.976129 6514.1481 6.8519242e+10 0.11367442 0.036549518 100.09631 36.856815 6516.7791 5.8343321e+10 0.12635263 0.037342903 100.17432 36.735488 6519.4102 5.0527891e+10 0.13957113 0.038136289 100.25232 36.611600 6522.0412 4.3935513e+10 0.15311248 0.038928039 100.33152 36.485021 6524.6722 3.8127520e+10 0.16016966 0.039665779 100.41412 36.350806 6527.3033 3.3021459e+10 0.16570871 0.040936665 100.49523 36.219932 6529.9343 2.8661978e+10 0.17044731 0.043724107 100.57323 36.096046 6532.5654 2.5204551e+10 0.17392566 0.047156514 100.65057 35.972820 6535.1964 2.2390568e+10 0.17578789 0.048139084 100.72399 35.853520 6537.8275 1.9983183e+10 0.17681525 0.049075347 100.79741 35.734220 6540.4585 1.7905472e+10 0.17728656 0.051070724 100.87083 35.614906 6543.0896 1.6068413e+10 0.17597020 0.051405404 100.94425 35.495592 6545.7206 1.4489996e+10 0.17371509 0.052462023 101.01767 35.372685 6548.3517 1.3092829e+10 0.17065755 0.053772667 101.09109 35.248797 6550.9827 1.1778452e+10 0.16614370 0.055231424 101.17006 35.118650 6553.6138 1.0568944e+10 0.16181226 0.055026534 101.25265 34.984435 6556.2448 9.4746071e+09 0.15737256 0.053977133 101.32911 34.857128 6558.8759 8.5617772e+09 0.15371946 0.052492962 101.40252 34.733241 6561.5069 7.8145867e+09 0.15009794 0.051122887 101.47370 34.611592 6564.1380 7.1626265e+09 0.14634093 0.048709075 101.54253 34.492277 6566.7690 6.5643788e+09 0.14363218 0.046747861 101.61279 34.372968 6569.4001 6.0233144e+09 0.14109387 0.044878462 101.68620 34.253670 6572.0311 5.5316546e+09 0.13894399 0.044212346 101.75902 34.133770 6574.6621 5.0992897e+09 0.13591810 0.042536978 101.82784 34.009882 6577.2932 4.6988096e+09 0.13275072 0.039759835 101.89667 33.885994 6579.9242 4.2889101e+09 0.12946097 0.036562401 101.97369 33.752279 6582.5553 3.9024412e+09 0.12645506 0.035142685 102.05099 33.618286 6585.1863 3.5439049e+09 0.12366240 0.033821801 102.11982 33.498981 6587.8174 3.2465043e+09 0.12090704 0.033339470 102.18864 33.379682 6590.4484 3.0032368e+09 0.11746860 0.030227915 102.25748 33.256538 6593.0795 2.7816499e+09 0.11386363 0.027028330 102.32631 33.132634 6595.7105 2.5826888e+09 0.10969284 0.025697255 102.39514 33.011751 6598.3416 2.4078871e+09 0.10616140 0.025244086 102.46397 32.892452 6600.9726 2.2338758e+09 0.10451861 0.026989404 102.53444 32.766046 6603.6037 2.0599266e+09 0.10204204 0.026305904 102.60671 32.631831 6606.2347 1.8969944e+09 0.10018290 0.027082186 102.67712 32.505661 6608.8658 1.7512111e+09 0.095951547 0.023709481 102.74595 32.386362 6611.4968 1.6325724e+09 0.092082391 0.024641637 102.81312 32.267057 6614.1279 1.5279340e+09 0.090714199 0.023852403 102.87737 32.147742 6616.7589 1.4311163e+09 0.089409772 0.023401409 102.94162 32.027599 6619.3900 1.3431866e+09 0.089068657 0.024620004 103.00585 31.903713 6622.0210 1.2589748e+09 0.088248752 0.024752403 103.07012 31.779793 6624.6520 1.1713735e+09 0.086750031 0.025211348 103.14237 31.645597 6627.2831 1.0831023e+09 0.085038323 0.025426166 103.21412 31.512341 6629.9141 1.0048189e+09 0.084056088 0.025943825 103.27836 31.393042 6632.5452 9.3494049e+08 0.082433392 0.026097718 103.34260 31.273743 6635.1762 8.7629429e+08 0.080993286 0.026426217 103.40684 31.154443 6637.8073 8.2248844e+08 0.079660291 0.025766028 103.47107 31.035144 6640.4383 7.6763814e+08 0.079753496 0.025217021 103.54098 30.905310 6643.0694 7.1413116e+08 0.079625353 0.025203094 103.61326 30.771075 6645.7004 6.6129426e+08 0.078478935 0.025779808 103.67936 30.648318 6648.3315 6.1567889e+08 0.077292336 0.027186175 103.74360 30.529019 6650.9625 5.8010944e+08 0.076550132 0.026475586 103.80514 30.409720 6653.5936 5.5022609e+08 0.075900564 0.027828717 103.86479 30.290421 6656.2246 5.1735202e+08 0.073868695 0.028220563 103.92961 30.165011 6658.8557 4.8254560e+08 0.071982402 0.031578617 104.00188 30.030798 6661.4867 4.4865456e+08 0.070397485 0.032782842 104.06818 29.903631 6664.1178 4.2366713e+08 0.068767144 0.031775212 104.12783 29.784332 6666.7488 3.9831474e+08 0.068697620 0.027054509 104.18967 29.660656 6669.3799 3.7524175e+08 0.067640392 0.027965566 104.25679 29.526422 6672.0109 3.5074669e+08 0.067835388 0.026885918 104.32288 29.397508 6674.6419 3.2521645e+08 0.066984504 0.029496317 104.38712 29.278209 6677.2730 3.0900549e+08 0.064965880 0.031970125 104.45055 29.158910 6679.9040 2.9069599e+08 0.065397714 0.029520710 104.51020 29.039611 6682.5351 2.7633158e+08 0.066638032 0.030833373 104.56984 28.920312 6685.1661 2.5991024e+08 0.066914331 0.032880321 104.63693 28.786136 6687.7972 2.4381816e+08 0.064865487 0.033898302 104.70331 28.652819 6690.4282 2.3199533e+08 0.062872405 0.033066788 104.75837 28.533520 6693.0593 2.1582141e+08 0.062146685 0.031583752 104.81344 28.414221 6695.6903 2.0394645e+08 0.061801710 0.029732669 104.87911 28.286315 6698.3214 1.9104561e+08 0.061037677 0.030658942 104.94623 28.157244 6700.9524 1.7755347e+08 0.059140559 0.031374157 105.01334 28.023319 6703.5835 1.6862811e+08 0.059045139 0.035135264 105.08036 27.889216 6706.2145 1.5944964e+08 0.059202021 0.038819756 105.13543 27.769906 6708.8456 1.5041049e+08 0.058734391 0.040964369 105.19049 27.650607 6711.4766 1.4226173e+08 0.056733217 0.041234488 105.25551 27.518969 6714.1077 1.3390202e+08 0.054249305 0.047311502 105.32262 27.384756 6716.7387 1.2560687e+08 0.052131385 0.049489409 105.37901 27.263817 6719.3698 1.2194103e+08 0.049735248 0.051018544 105.43407 27.144518 6722.0008 1.1758715e+08 0.049963031 0.050604212 105.49402 27.018288 6724.6319 1.1187567e+08 0.046199935 0.044650307 105.55597 26.889237 6727.2629 1.0783968e+08 0.043591865 0.040610131 105.62191 26.756177 6729.8939 1.0085012e+08 0.042574984 0.040449590 105.68903 26.621943 6732.5250 93218380. 0.040839544 0.043836858 105.75182 26.487726 6735.1560 86716935. 0.040973937 0.049459080 105.81376 26.353511 6737.7871 80567377. 0.042849364 0.056642851 105.86952 26.236837 6740.4181 77313769. 0.042479747 0.064764673 105.92458 26.122127 6743.0492 75786832. 0.038592311 0.071379222 105.98460 25.993375 6745.6802 70587116. 0.035331157 0.078852849 106.04654 25.859161 6748.3113 69147465. 0.031118036 0.068654538 106.10848 25.728988 6750.9423 66523632. 0.028188766 0.073613188 106.17043 25.599937 6753.5734 64145354. 0.024987428 0.074832825 106.22801 25.466520 6756.2044 62993400. 0.022015197 0.074692910 106.28479 25.332307 6758.8355 58671596. 0.021647219 0.075472027 106.34627 25.202781 6761.4665 57789158. 0.023236259 0.078006768 106.40821 25.073729 6764.0976 56837883. 0.026786810 0.079487959 106.47016 24.939664 6766.7286 53192051. 0.018446884 0.081361874 106.53192 24.805625 6769.3597 49771325. 0.020797308 0.085326586 106.58872 24.676554 6771.9907 45008814. 0.035046830 0.091708032 106.64601 24.546984