# # 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 = 53.567461 km # Date (UTC) = 2011-12-21T09:32:10.892 # Date (julian) = 2455916.89734829 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.4053 5.1736918e+10 0.038100887 0.032103892 109.63194 34.563605 6501.6164 4.8575310e+10 0.046633919 0.032770641 109.69363 34.459491 6503.8275 4.5427569e+10 0.055479878 0.033437390 109.75533 34.355378 6506.0386 4.2428049e+10 0.064697136 0.034104139 109.81597 34.251261 6508.2497 3.9595737e+10 0.074335836 0.034770888 109.87381 34.147133 6510.4608 3.7001756e+10 0.084473200 0.035437637 109.93166 34.043006 6512.6719 3.4495062e+10 0.095061450 0.036104385 109.99214 33.941523 6514.8830 3.2285627e+10 0.10622278 0.036771134 110.05383 33.841267 6517.0941 3.0155263e+10 0.11785447 0.037437883 110.11519 33.740664 6519.3052 2.8102113e+10 0.12994839 0.038104632 110.17303 33.636551 6521.5163 2.6195645e+10 0.14251984 0.038771381 110.23087 33.532437 6523.7274 2.4332738e+10 0.15046583 0.039359385 110.28871 33.428324 6525.9384 2.2643693e+10 0.15631819 0.039675112 110.34655 33.324210 6528.1495 2.1064209e+10 0.16295917 0.041561112 110.40439 33.220097 6530.3606 1.9640502e+10 0.16813786 0.044333571 110.46224 33.115971 6532.5717 1.8395298e+10 0.17263144 0.047161805 110.52009 33.011844 6534.7828 1.7164973e+10 0.17520519 0.048163541 110.58017 32.905031 6536.9939 1.5917649e+10 0.17633402 0.048679773 110.64524 32.792241 6539.2050 1.4673208e+10 0.17630021 0.049891772 110.71026 32.679514 6541.4161 1.3519108e+10 0.17511961 0.051191595 110.76812 32.575379 6543.6272 1.2565999e+10 0.17308541 0.051546500 110.82596 32.471266 6545.8383 1.1726511e+10 0.17068388 0.052463077 110.88381 32.367152 6548.0494 1.0947109e+10 0.16917490 0.053682388 110.94165 32.263039 6550.2605 1.0224772e+10 0.16753036 0.055050575 110.99949 32.158926 6552.4715 9.5638631e+09 0.16573271 0.055468078 111.05734 32.057956 6554.6826 8.9612550e+09 0.16369911 0.054846705 111.11518 31.957686 6556.8937 8.4056671e+09 0.16159645 0.053881730 111.17216 31.856550 6559.1048 7.8875240e+09 0.15892718 0.052375350 111.22615 31.752437 6561.3159 7.4235442e+09 0.15634174 0.051217005 111.28013 31.648325 6563.5270 6.9932485e+09 0.15384140 0.049318741 111.33412 31.546648 6565.7381 6.5935392e+09 0.15154972 0.047480275 111.38810 31.446391 6567.9492 6.2283347e+09 0.14992714 0.045814622 111.44223 31.345985 6570.1603 5.8811361e+09 0.14837281 0.044851114 111.50007 31.241871 6572.3714 5.5724123e+09 0.14644203 0.044017479 111.55791 31.137758 6574.5825 5.2793312e+09 0.14403533 0.042575248 111.61404 31.033639 6576.7936 5.0175907e+09 0.14145760 0.040457991 111.66803 30.929511 6579.0047 4.7646383e+09 0.13816842 0.037067941 111.72203 30.825384 6581.2157 4.4964231e+09 0.13551841 0.035531279 111.78176 30.713873 6583.4268 4.2158740e+09 0.13314580 0.034805622 111.84250 30.601082 6585.6379 3.9418504e+09 0.13046199 0.033460766 111.89954 30.495148 6587.8490 3.7093418e+09 0.12816601 0.033346479 111.95352 30.394891 6590.0601 3.5180701e+09 0.12558627 0.030950254 112.00751 30.294635 6592.2712 3.3553804e+09 0.12289057 0.027810107 112.05781 30.190700 6594.4823 3.1969555e+09 0.12065318 0.025907768 112.10794 30.086587 6596.6934 3.0495904e+09 0.11823104 0.025724121 112.15946 29.983863 6598.9045 2.9058841e+09 0.11650244 0.024975336 112.21344 29.883606 6601.1156 2.7654997e+09 0.11668518 0.027100116 112.26743 29.783348 6603.3267 2.6401945e+09 0.11570017 0.026469891 112.32142 29.680122 6605.5378 2.5137610e+09 0.11524496 0.027116175 112.37541 29.575995 6607.7488 2.4021587e+09 0.11346000 0.024228308 112.42873 29.472542 6609.9599 2.2948668e+09 0.11054707 0.023991078 112.47886 29.372285 6612.1710 2.1963968e+09 0.10823184 0.024192965 112.52899 29.272027 6614.3821 2.0978784e+09 0.10720636 0.023677226 112.58276 29.161971 6616.5932 1.9892234e+09 0.10580893 0.023375404 112.63915 29.044841 6618.8043 1.8814537e+09 0.10516750 0.024378141 112.69488 28.932363 6621.0154 1.7834130e+09 0.10436468 0.025084343 112.74887 28.832106 6623.2265 1.7036090e+09 0.10270385 0.024575736 112.80285 28.731850 6625.4376 1.6289777e+09 0.10118110 0.025919769 112.85421 28.631584 6627.6487 1.5635240e+09 0.099064411 0.025567382 112.90434 28.531313 6629.8598 1.5021418e+09 0.097527568 0.025953657 112.95448 28.431044 6632.0709 1.4472508e+09 0.095407808 0.026040842 113.00461 28.330787 6634.2819 1.3959139e+09 0.093533184 0.026347409 113.05474 28.230530 6636.4930 1.3345236e+09 0.091722506 0.026358285 113.10797 28.121904 6638.7041 1.2671928e+09 0.090502676 0.025640965 113.16437 28.004774 6640.9152 1.1998401e+09 0.091061127 0.025158673 113.21957 27.890865 6643.1263 1.1361051e+09 0.090859714 0.025211690 113.26969 27.790608 6645.3374 1.0852415e+09 0.090029908 0.025609747 113.31982 27.690350 6647.5485 1.0384457e+09 0.089089430 0.026726567 113.36765 27.590093 6649.7596 9.9813951e+08 0.088320544 0.026586629 113.41392 27.489835 6651.9707 9.5992207e+08 0.087880592 0.027228053 113.46022 27.389578 6654.1818 9.2308582e+08 0.087195490 0.027958788 113.51034 27.289308 6656.3929 8.8876651e+08 0.085374286 0.028368234 113.56048 27.189037 6658.6040 8.4974754e+08 0.083874022 0.031132211 113.61140 27.083619 6660.8151 8.0871399e+08 0.082538063 0.032366839 113.66346 26.970828 6663.0261 7.6572050e+08 0.081404639 0.032475968 113.71532 26.859367 6665.2372 7.2771993e+08 0.080855314 0.028158414 113.76544 26.759110 6667.4483 6.9791045e+08 0.080288710 0.027268135 113.81557 26.658852 6669.6594 6.7251758e+08 0.079344255 0.027678435 113.86372 26.556617 6671.8705 6.5144229e+08 0.079058278 0.026877754 113.91000 26.452504 6674.0816 6.2887482e+08 0.078085045 0.029023627 113.95627 26.348391 6676.2927 6.0333542e+08 0.075677176 0.031902363 114.01185 26.236299 6678.5038 5.7533907e+08 0.074674109 0.030599661 114.06824 26.123508 6680.7149 5.4701848e+08 0.075273802 0.029595788 114.11842 26.018408 6682.9260 5.2323851e+08 0.075816091 0.031132019 114.16470 25.918137 6685.1371 5.0661125e+08 0.075427693 0.032849608 114.21111 25.817600 6687.3482 4.8724326e+08 0.073412075 0.034148732 114.26317 25.704809 6689.5592 4.6386171e+08 0.071010624 0.033512615 114.31522 25.592017 6691.7703 4.4196961e+08 0.070111223 0.032819514 114.36314 25.488202 6693.9814 4.2199506e+08 0.069247466 0.031267398 114.40941 25.387944 6696.1925 4.0617394e+08 0.069214269 0.029755774 114.45639 25.286148 6698.4036 3.9014634e+08 0.068308985 0.030771821 114.50845 25.173358 6700.6147 3.7346572e+08 0.066628067 0.031123661 114.56051 25.060568 6702.8258 3.5640458e+08 0.066024059 0.033536132 114.60784 24.961178 6705.0369 3.4315876e+08 0.066273702 0.036734185 114.65411 24.864777 6707.2480 3.3081435e+08 0.065910020 0.040151303 114.70071 24.764699 6709.4591 3.1601241e+08 0.065162026 0.040840552 114.74843 24.651907 6711.6702 3.0079989e+08 0.063219188 0.041454695 114.79615 24.539116 6713.8813 2.8442851e+08 0.061091518 0.046873934 114.84254 24.437833 6716.0923 2.7429880e+08 0.059285343 0.048537378 114.88882 24.337563 6718.3034 2.6688973e+08 0.056974813 0.050284997 114.93698 24.233208 6720.5145 2.5947206e+08 0.056333981 0.050360149 114.98904 24.120417 6722.7256 2.5171449e+08 0.055631679 0.049708146 115.04101 24.007626 6724.9367 2.3866845e+08 0.051480960 0.042104495 115.08873 23.894835 6727.1478 2.2666115e+08 0.049690974 0.040763466 115.13644 23.782044 6729.3589 2.1252058e+08 0.049093467 0.040806213 115.18313 23.678226 6731.5700 2.0524395e+08 0.047121299 0.042884410 115.22940 23.577968 6733.7811 2.0096116e+08 0.045791113 0.048165029 115.27585 23.476707 6735.9922 1.9514566e+08 0.047162508 0.050346698 115.32357 23.368253 6738.2033 1.8972407e+08 0.048293117 0.058440162 115.37129 23.259800 6740.4144 1.7916068e+08 0.047765132 0.064758220 115.42255 23.147800 6742.6254 1.7307158e+08 0.044703088 0.070134777 115.47461 23.035009 6744.8365 1.6607354e+08 0.040820565 0.078440455 115.52173 22.928632 6747.0476 1.5982729e+08 0.036016016 0.067344763 115.56415 22.828362 6749.2587 1.5350089e+08 0.035453978 0.072207094 115.60658 22.728091 6751.4698 1.4531913e+08 0.032052183 0.073910312 115.65387 22.620299 6753.6809 1.4007616e+08 0.029906983 0.075180834 115.70159 22.511846 6755.8920 1.3414028e+08 0.027400920 0.074214260 115.74931 22.400728 6758.1031 1.2897675e+08 0.026591276 0.073923326 115.79703 22.287936 6760.3142 1.2685518e+08 0.027057888 0.076660406 115.84475 22.175145 6762.5253 1.2259036e+08 0.031376322 0.077203531 115.89247 22.062355 6764.7364 1.2177502e+08 0.034064196 0.079518563 115.94019 21.949590 6766.9475 1.1940234e+08 0.034174022 0.081856919 115.98791 21.841128 6769.1586 1.1143085e+08 0.029162058 0.084838819 116.03563 21.732675 6771.3696 1.0615197e+08 0.025046883 0.090201689 116.08335 21.621191 6773.5807 1.0231989e+08 0.020950467 0.095564559 116.13107 21.508400 6775.7918 97418157. 0.016850326 0.10092743 116.17878 21.397316 6778.0029 95805797. 0.012811515 0.10629030 116.22650 21.288863 6780.2140 91144117. 0.0087168209 0.11165317 116.27422 21.180025 6782.4251 86290420. 0.0046152761 0.11701604 116.32194 21.067234 6784.6362 87691727. 0.00068806042 0.12237891 116.36966 20.954443 6786.8473 82004747. -0.0034195215 0.12774178 116.41398 20.845037 6789.0584 79653844. -0.0074327418 0.13310465 116.45737 20.736568 6791.2695 72758676. -0.011638925 0.13846752 116.50284 20.626031 6793.4806 66052913. -0.015942015 0.14383039 116.55055 20.513240 6795.6917 64251507. -0.020096687 0.14919326 116.59827 20.401201 6797.9027 61066952. -0.024471614 0.15455613 116.64599 20.292748 6800.1138 58412234. -0.029038797 0.15991900 116.69371 20.184295 6802.3249 55101236. -0.034100016 0.16528187 116.73766 20.072075 6804.5360 53549104. -0.039756016 0.17064474 116.78105 19.959283 6806.7471 52009345. -0.047916415 0.17600761 116.82687 19.848934 6808.9582 51683642. -0.075709319 0.18137048 116.87459 19.740481 6811.1693 49698281. -0.060012286 0.18673335 116.92279 19.628032 6813.3804 48700337. -0.019321138 0.19209622 116.97237 19.504083