# # 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 = 48.794753 km # Date (UTC) = 2015-01-22T09:44:39.064 # Date (julian) = 2457044.90600768 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.0479 6.6774818e+10 0.063653475 0.033503834 -22.398332 55.671670 6506.2184 6.1423539e+10 0.073530477 0.034158337 -22.569477 55.532926 6508.3888 5.6230639e+10 0.083613406 0.034812841 -22.751180 55.385290 6510.5593 5.0744859e+10 0.093781850 0.035467344 -22.922703 55.242747 6512.7298 4.5901210e+10 0.10420310 0.036121848 -23.090414 55.102878 6514.9003 4.1921077e+10 0.11499453 0.036776351 -23.241287 54.976339 6517.0708 3.8428905e+10 0.12610157 0.037430855 -23.393730 54.848558 6519.2413 3.5249186e+10 0.13747943 0.038085358 -23.564078 54.706602 6521.4117 3.2263383e+10 0.14909628 0.038739862 -23.725094 54.569572 6523.5822 2.9547011e+10 0.15642553 0.039323414 -23.866233 54.443031 6525.7527 2.7056424e+10 0.16153203 0.039696310 -24.013603 54.310906 6527.9232 2.4638542e+10 0.16677240 0.041386716 -24.178272 54.163273 6530.0937 2.2308365e+10 0.17093455 0.043959832 -24.328627 54.026276 6532.2642 2.0202358e+10 0.17386335 0.046904863 -24.464877 53.899759 6534.4346 1.8508285e+10 0.17525349 0.048066142 -24.603321 53.775415 6536.6051 1.7087157e+10 0.17556130 0.048331917 -24.744461 53.653743 6538.7756 1.5724564e+10 0.17587290 0.049534359 -24.890396 53.521842 6540.9461 1.4415358e+10 0.17510967 0.051301058 -25.043708 53.374207 6543.1166 1.3195433e+10 0.17361308 0.051412488 -25.186237 53.239923 6545.2871 1.2154853e+10 0.17179354 0.052458139 -25.322510 53.113384 6547.4575 1.1325368e+10 0.16969540 0.053461357 -25.455969 52.986844 6549.6280 1.0613598e+10 0.16760783 0.054606282 -25.587376 52.860304 6551.7985 9.8895974e+09 0.16575787 0.055516038 -25.727276 52.722723 6553.9690 9.1414410e+09 0.16332411 0.054847971 -25.874910 52.575090 6556.1395 8.4248404e+09 0.16117796 0.053992621 -26.006464 52.443536 6558.3100 7.8084028e+09 0.15926215 0.052975187 -26.133003 52.316996 6560.4804 7.2968323e+09 0.15666278 0.051841134 -26.259542 52.190457 6562.6509 6.8535848e+09 0.15409920 0.050260530 -26.386082 52.063919 6564.8214 6.4438204e+09 0.15165900 0.048399338 -26.512622 51.937379 6566.9919 6.0836463e+09 0.14945497 0.046621778 -26.639161 51.810838 6569.1624 5.7060326e+09 0.14734280 0.044862992 -26.774923 51.671679 6571.3329 5.3135367e+09 0.14584763 0.044412367 -26.916879 51.524047 6573.5033 4.9324204e+09 0.14381441 0.043253567 -27.041855 51.389997 6575.6738 4.5929254e+09 0.14157423 0.041698656 -27.163527 51.258591 6577.8443 4.3345756e+09 0.13899460 0.038894178 -27.281392 51.130993 6580.0148 4.0940302e+09 0.13622290 0.036507089 -27.398198 51.004454 6582.1853 3.8873631e+09 0.13334745 0.035243378 -27.515003 50.877914 6584.3558 3.6883939e+09 0.13048305 0.034321720 -27.631808 50.751374 6586.5262 3.4757297e+09 0.12777697 0.033164494 -27.761719 50.610637 6588.6967 3.2686561e+09 0.12516130 0.033147259 -27.897997 50.463004 6590.8672 3.0657747e+09 0.12194257 0.029448935 -28.012079 50.334606 6593.0377 2.8916448e+09 0.11924196 0.027067185 -28.124017 50.208066 6595.2082 2.7379362e+09 0.11647773 0.025645159 -28.240128 50.077354 6597.3787 2.5827593e+09 0.11417985 0.025603239 -28.356933 49.945948 6599.5491 2.4385611e+09 0.11305726 0.024962758 -28.465928 49.818447 6601.7196 2.3059261e+09 0.11292739 0.027384589 -28.573000 49.691908 6603.8901 2.1852233e+09 0.11160108 0.026136336 -28.683712 49.565370 6606.0606 2.0741360e+09 0.11129653 0.027395094 -28.795650 49.438831 6608.2311 1.9660724e+09 0.10900952 0.023726262 -28.904203 49.312306 6610.4016 1.8677101e+09 0.10602691 0.024386652 -29.011256 49.185787 6612.5720 1.7698292e+09 0.10430218 0.023893349 -29.118322 49.056149 6614.7425 1.6777826e+09 0.10319191 0.023428927 -29.225394 48.924743 6616.9130 1.5928538e+09 0.10171794 0.023425595 -29.332466 48.796177 6619.0835 1.5147314e+09 0.10089798 0.024546058 -29.439537 48.669638 6621.2540 1.4485359e+09 0.099834109 0.025005268 -29.544036 48.540526 6623.4245 1.3873602e+09 0.097919751 0.024649078 -29.646242 48.409119 6625.5949 1.3202864e+09 0.096405792 0.026107539 -29.756523 48.270021 6627.7654 1.2469300e+09 0.094384906 0.025612479 -29.875765 48.122388 6629.9359 1.1717245e+09 0.092932399 0.025939891 -29.982861 47.989792 6632.1064 1.1047785e+09 0.090938595 0.026045102 -30.085067 47.863252 6634.2769 1.0522059e+09 0.089128566 0.026347039 -30.187271 47.733509 6636.4474 1.0090297e+09 0.087194346 0.026376028 -30.289476 47.602102 6638.6178 9.6621384e+08 0.085712278 0.025644725 -30.388744 47.473633 6640.7883 9.2253505e+08 0.085872580 0.025174200 -30.486083 47.347094 6642.9588 8.8197244e+08 0.085499222 0.025190932 -30.583421 47.217883 6645.1293 8.4194384e+08 0.084614063 0.025512249 -30.680758 47.086477 6647.2998 8.0411387e+08 0.083644391 0.026595609 -30.778096 46.957475 6649.4703 7.6996424e+08 0.082790751 0.026985470 -30.875434 46.830934 6651.6407 7.3506631e+08 0.082493842 0.026975195 -30.972772 46.704395 6653.8112 7.0272769e+08 0.082008629 0.027939840 -31.070110 46.577856 6655.9817 6.7624809e+08 0.080322877 0.028015857 -31.165575 46.449445 6658.1522 6.4653025e+08 0.078943504 0.030330980 -31.258046 46.318039 6660.3227 6.2097715e+08 0.077525269 0.031919286 -31.350518 46.188238 6662.4932 5.9651449e+08 0.076143946 0.032767585 -31.442990 46.061699 6664.6636 5.6964043e+08 0.075255765 0.029777882 -31.535461 45.933820 6666.8341 5.4385098e+08 0.074999430 0.027071133 -31.627933 45.802413 6669.0046 5.1768949e+08 0.073734949 0.028350978 -31.720404 45.672080 6671.1751 4.8869415e+08 0.073892779 0.026867843 -31.812874 45.545540 6673.3456 4.6747896e+08 0.073328194 0.027976037 -31.904537 45.418192 6675.5160 4.4855749e+08 0.071342534 0.030786782 -31.992141 45.286786 6677.6865 4.2824840e+08 0.069773004 0.031382240 -32.080287 45.155921 6679.8570 4.1221803e+08 0.069679235 0.029559571 -32.172757 45.029382 6682.0275 3.9082452e+08 0.070375411 0.030445554 -32.264953 44.902569 6684.1980 3.7509807e+08 0.070410020 0.032664139 -32.352557 44.771162 6686.3685 3.6084693e+08 0.069369824 0.033975464 -32.440137 44.639780 6688.5389 3.4518420e+08 0.066631165 0.033909598 -32.522891 44.513225 6690.7094 3.3157990e+08 0.065292924 0.033034562 -32.605630 44.386686 6692.8799 3.1449561e+08 0.064586339 0.031743535 -32.706809 44.240166 6695.0504 2.9958267e+08 0.064169016 0.029850216 -32.806300 44.095550 6697.2209 2.8435796e+08 0.063758485 0.030119218 -32.893904 43.964144 6699.3914 2.7327613e+08 0.062507630 0.031229313 -32.980869 43.833377 6701.5618 2.6041658e+08 0.060877913 0.032233838 -33.063605 43.706839 6703.7323 2.5023142e+08 0.061075678 0.035507764 -33.146342 43.579927 6705.9028 2.3656652e+08 0.061260317 0.038273630 -33.229080 43.448520 6708.0733 2.2303612e+08 0.061068079 0.040123398 -33.311818 43.317221 6710.2438 2.1341829e+08 0.059897546 0.040544212 -33.394555 43.190681 6712.4143 2.0278455e+08 0.057918024 0.042599111 -33.477292 43.064142 6714.5847 1.9552969e+08 0.055948088 0.047347370 -33.555322 42.932895 6716.7552 1.8361959e+08 0.054162137 0.049513748 -33.633192 42.801489 6718.9257 1.7621148e+08 0.051873265 0.051254146 -33.715505 42.674523 6721.0962 1.7262700e+08 0.052301207 0.050332884 -33.798243 42.547982 6723.2667 1.7047102e+08 0.051078431 0.049517677 -33.876805 42.417268 6725.4372 1.6433771e+08 0.047000757 0.041302944 -33.954675 42.285861 6727.6076 1.5918169e+08 0.045897122 0.040150824 -34.032545 42.158365 6729.7781 1.5042629e+08 0.044991481 0.040526783 -34.110416 42.031826 6731.9486 1.4236329e+08 0.043338756 0.043637944 -34.188276 41.901660 6734.1191 1.3632395e+08 0.042497422 0.049346434 -34.266134 41.770275 6736.2896 1.2796134e+08 0.044373735 0.051449787 -34.353002 41.627623 6738.4601 1.2311723e+08 0.045562726 0.059853960 -34.443853 41.479991 6740.6305 1.1800686e+08 0.045009461 0.065127545 -34.518063 41.352023 6742.8010 1.1416220e+08 0.041976331 0.070562616 -34.591066 41.225483 6744.9715 1.0967350e+08 0.038594057 0.078544854 -34.668340 41.094672 6747.1420 1.0409947e+08 0.034163922 0.067312277 -34.746211 40.963266 6749.3125 1.0003182e+08 0.033678905 0.072192376 -34.820076 40.835865 6751.4830 93571567. 0.030652970 0.073915871 -34.893081 40.709327 6753.6534 92947768. 0.028771897 0.075091966 -34.966085 40.579048 6755.8239 89014700. 0.026593492 0.074244104 -35.039089 40.447642 6757.9944 84333118. 0.025914575 0.073722273 -35.120776 40.304657 6760.1649 80671200. 0.026671688 0.076375724 -35.205948 40.157023 6762.3354 77284114. 0.030932591 0.077509848 -35.279531 40.029480 6764.5059 73064343. 0.033939455 0.079507520 -35.352535 39.902939 6766.6763 65938976. 0.034768485 0.081243658 -35.425538 39.772030 6768.8468 60435812. 0.030543267 0.083903122 -35.498540 39.640624 6771.0173 55056334. 0.026700756 0.089347135 -35.567442 39.513321 6773.1878 53835831. 0.022902380 0.094611511 -35.635580 39.386783 6775.3583 49497817. 0.019181956 0.099875887 -35.717146 39.239138 6777.5288 44268750. 0.015510056 0.10514026 -35.801854 39.086555 6779.6992 40183671. 0.011840098 0.11040464 -35.869991 38.960015 6781.8697 36800833. 0.0081823090 0.11566902 -35.938128 38.833476 6784.0402 35212412. 0.0044959129 0.12093339 -36.006266 38.706936 6786.2107 34627686. 0.00080104892 0.12619777 -36.074404 38.580395 6788.3812 35339158. -0.0029216731 0.13146214 -36.152966 38.429283 6790.5517 36360079. -0.0066360194 0.13672652 -36.230680 38.280167 6792.7221 37713091. -0.010361077 0.14199090 -36.298816 38.153629 6794.8926 40568865. -0.014138818 0.14725527 -36.367531 38.024941 6797.0631 43222028. -0.017850236 0.15251965 -36.441333 37.877335 6799.2336 46177865. -0.021740660 0.15778403 -36.513206 37.735247 6801.4041 46235395. -0.025300168 0.16304840 -36.581342 37.603840 6803.5746 50053266. -0.029521195 0.16831278 -36.648087 37.473825 6805.7450 49737733. -0.033847351 0.17357715 -36.711356 37.347286