# # 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 = 49.029438 km # Date (UTC) = 2017-01-26T10:28:38.241 # Date (julian) = 2457779.93655372 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.3807 7.4313811e+10 0.079555915 0.033905746 -30.668646 58.933717 6507.0024 6.5950016e+10 0.087516563 0.034394776 -30.851935 58.806433 6508.6242 5.8451683e+10 0.095548229 0.034883805 -31.007653 58.695961 6510.2459 5.2971398e+10 0.10390364 0.035372835 -31.156145 58.589895 6511.8676 4.8575833e+10 0.11247878 0.035861864 -31.319765 58.472391 6513.4894 4.4232310e+10 0.12108932 0.036350894 -31.503010 58.340049 6515.1111 4.0012959e+10 0.12973175 0.036839923 -31.667899 58.220075 6516.7328 3.6269552e+10 0.13848409 0.037328952 -31.812149 58.114009 6518.3546 3.3482179e+10 0.14747485 0.037817982 -31.956399 58.007943 6519.9763 3.1223229e+10 0.15660700 0.038307011 -32.100647 57.901877 6521.5980 2.9060006e+10 0.16574291 0.038796041 -32.244896 57.795812 6523.2198 2.6613851e+10 0.17132155 0.039233583 -32.407127 57.669838 6524.8415 2.4092357e+10 0.17627976 0.039725909 -32.575143 57.537462 6526.4632 2.1747203e+10 0.17884108 0.040153740 -32.720960 57.422576 6528.0850 1.9831172e+10 0.18203060 0.041509894 -32.860965 57.312269 6529.7067 1.8417505e+10 0.18454008 0.043361507 -32.999112 57.203817 6531.3284 1.7162247e+10 0.18525330 0.045706729 -33.134849 57.097773 6532.9502 1.5998495e+10 0.18646717 0.047477963 -33.270589 56.991395 6534.5719 1.4989960e+10 0.18571130 0.048104542 -33.406354 56.881088 6536.1936 1.3999749e+10 0.18331211 0.047963758 -33.542120 56.770780 6537.8154 1.3123529e+10 0.18289502 0.049069639 -33.677884 56.660472 6539.4371 1.2386425e+10 0.18134637 0.050172738 -33.813648 56.550163 6541.0588 1.1628327e+10 0.17901481 0.051307446 -33.955590 56.431823 6542.6806 1.0845768e+10 0.17710357 0.051260623 -34.108331 56.299448 6544.3023 1.0062365e+10 0.17488167 0.051889588 -34.252587 56.175896 6545.9240 9.3341463e+09 0.17234275 0.052463846 -34.384107 56.065587 6547.5458 8.7144300e+09 0.17101197 0.053494914 -34.515445 55.955279 6549.1675 8.1510996e+09 0.16856990 0.054136987 -34.642700 55.844993 6550.7892 7.6134683e+09 0.16661477 0.055182980 -34.769954 55.734708 6552.4110 7.1520192e+09 0.16498452 0.055483323 -34.894317 55.624406 6554.0327 6.7441736e+09 0.16215259 0.054833067 -35.017353 55.514096 6555.6544 6.3595433e+09 0.15983851 0.054303474 -35.140388 55.403787 6557.2762 5.9909343e+09 0.15760089 0.053692997 -35.263425 55.293480 6558.8979 5.6556688e+09 0.15438954 0.052474172 -35.386461 55.183172 6560.5196 5.3456029e+09 0.15154797 0.051805781 -35.505376 55.072863 6562.1414 5.0546221e+09 0.14862192 0.050745375 -35.624169 54.962554 6563.7631 4.7897376e+09 0.14510650 0.049045620 -35.745569 54.852246 6565.3848 4.5289764e+09 0.14245174 0.047881398 -35.868606 54.741938 6567.0066 4.2780577e+09 0.13978607 0.046611623 -35.989460 54.630539 6568.6283 4.0329303e+09 0.13691259 0.045194092 -36.104011 54.515988 6570.2500 3.7991616e+09 0.13479668 0.044813931 -36.218562 54.401437 6571.8718 3.5808805e+09 0.13252180 0.044265175 -36.333092 54.290726 6573.4935 3.3754530e+09 0.13016479 0.043261447 -36.447621 54.180440 6575.1152 3.1884728e+09 0.12842081 0.042259077 -36.562161 54.070142 6576.7370 3.0110314e+09 0.12627693 0.040523111 -36.676713 53.959832 6578.3587 2.8328745e+09 0.12406274 0.038083160 -36.791264 53.849523 6579.9804 2.6583198e+09 0.12222990 0.036531501 -36.905815 53.739215 6581.6022 2.4924428e+09 0.12010201 0.035414260 -37.020366 53.628908 6583.2239 2.3477202e+09 0.11838061 0.034908330 -37.131401 53.515084 6584.8457 2.2217552e+09 0.11655765 0.034054853 -37.241709 53.400533 6586.4674 2.1037375e+09 0.11445793 0.033165254 -37.352017 53.287983 6588.0891 1.9863596e+09 0.11290106 0.033350170 -37.462327 53.177675 6589.7109 1.8580639e+09 0.11094458 0.031635713 -37.570414 53.068756 6591.3326 1.7733956e+09 0.10832214 0.028826626 -37.661325 52.970572 6592.9543 1.7087195e+09 0.10605662 0.027146591 -37.752236 52.872388 6594.5761 1.6308146e+09 0.10358127 0.025856299 -37.848672 52.769784 6596.1978 1.5640323e+09 0.10070873 0.025726375 -37.954737 52.659475 6597.8195 1.4803860e+09 0.098766828 0.025464118 -38.060771 52.549134 6599.4413 1.4307542e+09 0.097038851 0.024956269 -38.162573 52.434605 6601.0630 1.3810974e+09 0.096302129 0.027075353 -38.264375 52.320077 6602.6847 1.2974528e+09 0.095184265 0.026932320 -38.368948 52.208292 6604.3065 1.2210306e+09 0.093798748 0.026253239 -38.475014 52.097985 6605.9282 1.1604273e+09 0.093198711 0.027443719 -38.579837 51.986434 6607.5499 1.1273742e+09 0.091434528 0.024621108 -38.681660 51.871883 6609.1717 1.0194939e+09 0.089442728 0.023756921 -38.783484 51.757332 6610.7934 9.6867723e+08 0.087533424 0.024761043 -38.868286 51.658100 6612.4151 9.5636355e+08 0.086625431 0.024010588 -38.951924 51.559916 6614.0369 9.9047495e+08 0.085670587 0.023915100 -39.038945 51.459476 6615.6586 1.0621660e+09 0.084219978 0.023271795 -39.140767 51.349169 6617.2803 1.0602092e+09 0.083402353 0.023532189 -39.242589 51.238861 6618.9021 9.2169417e+08 0.083376532 0.024451956 -39.337378 51.125036 6620.5238 7.6131558e+08 0.083729866 0.024935988 -39.430716 51.010485 6622.1455 5.6911567e+08 0.084397382 0.024719259 -39.526057 50.895934 6623.7673 5.3585664e+08 0.083203591 0.024776083 -39.623637 50.781382 6625.3890 5.4933695e+08 0.082250402 0.025861787 -39.720728 50.667321 6627.0107 5.1430524e+08 0.080844560 0.025320953 -39.814047 50.557034 6628.6325 5.6798552e+08 0.079403574 0.025959879 -39.907367 50.446747 6630.2542 5.2260897e+08 0.078571030 0.025928928 -39.990599 50.345629 6631.8759 4.9193243e+08 0.077436209 0.026019742 -40.070601 50.247446 6633.4977 4.2341777e+08 0.077038813 0.026239139 -40.150703 50.149140 6635.1194 3.4101248e+08 0.077070935 0.026417692 -40.244039 50.034590 6636.7411 3.3655036e+08 0.075762203 0.026261943 -40.337376 49.920039 6638.3629 3.3121335e+08 0.074958727 0.025655833 -40.430714 49.808247 6639.9846 2.8773738e+08 0.075693088 0.025276159 -40.524053 49.697937 6641.6063 2.6024095e+08 0.076210371 0.025150359 -40.612411 49.591185 6643.2281 2.5734841e+08 0.075648848 0.025227053 -40.688775 49.493001 6644.8498 2.6739558e+08 0.074685377 0.025435450 -40.765140 49.394818 6646.4715 2.7034794e+08 0.073766383 0.026164225 -40.848424 49.287739 6648.0933 2.5075561e+08 0.073525903 0.027026714 -40.937518 49.173190 6649.7150 2.1745641e+08 0.073730920 0.026648102 -41.025822 49.058640 6651.3367 1.9701886e+08 0.073991376 0.026742219 -41.110675 48.944089 6652.9585 1.7501240e+08 0.074594041 0.027514233 -41.195528 48.829538 6654.5802 1.6487525e+08 0.074238661 0.027789057 -41.270324 48.728563 6656.2019 1.5708361e+08 0.073254566 0.028200650 -41.343053 48.630379 6657.8237 1.3852203e+08 0.073281872 0.029856534 -41.417082 48.531233 6659.4454 1.3269357e+08 0.072599324 0.031741688 -41.506159 48.420946 6661.0671 1.2767766e+08 0.072052062 0.032569141 -41.595235 48.310659 6662.6889 1.2371725e+08 0.071644333 0.032657778 -41.678200 48.197292 6664.3106 1.2386444e+08 0.070945480 0.031069624 -41.758812 48.082741 6665.9323 1.2115449e+08 0.071422066 0.027019472 -41.836546 47.974163 6667.5541 1.2399577e+08 0.070945428 0.027306975 -41.909273 47.875981 6669.1758 1.2734656e+08 0.069985545 0.028175145 -41.982001 47.777798 6670.7975 1.3491011e+08 0.069860302 0.026959148 -42.059577 47.669549 6672.4193 1.4140088e+08 0.069433672 0.027122613 -42.140188 47.554998 6674.0410 1.4407586e+08 0.068732285 0.028989377 -42.220798 47.440447 6675.6627 1.4840008e+08 0.066990459 0.031067734 -42.301407 47.325896 6677.2845 1.4961681e+08 0.065791574 0.031953819 -42.382017 47.211345 6678.9062 1.5066111e+08 0.065365618 0.030330509 -42.452250 47.111540 6680.5279 1.4718590e+08 0.066492837 0.029555419 -42.521343 47.013356 6682.1497 1.4338393e+08 0.067352385 0.030538894 -42.592175 46.912701 6683.7714 1.4288212e+08 0.067714576 0.032319078 -42.672785 46.798150 6685.3931 1.4345029e+08 0.067589381 0.033120085 -42.753394 46.683599 6687.0149 1.4256855e+08 0.066307372 0.034334608 -42.830636 46.572417 6688.6366 1.3886569e+08 0.064463465 0.033932140 -42.907004 46.462108 6690.2583 1.3166523e+08 0.063872770 0.033086258 -42.978603 46.357098 6691.8801 1.2708250e+08 0.063309884 0.032793625 -43.044059 46.258914 6693.5018 1.2281797e+08 0.062892649 0.031431939 -43.109515 46.160730 6695.1235 1.2348901e+08 0.062610878 0.029836782 -43.182457 46.051318 6696.7453 1.2345135e+08 0.062189028 0.029985430 -43.258809 45.936790 6698.3670 1.1570350e+08 0.061727089 0.030721572 -43.335166 45.822254 6699.9887 1.0472259e+08 0.061063158 0.030678111 -43.411533 45.707703 6701.6105 91155775. 0.060410235 0.032305180 -43.487901 45.593152 6703.2322 84425775. 0.060918497 0.034256284 -43.550119 45.494518 6704.8539 78996719. 0.061362446 0.036596882 -43.611938 45.396334 6706.4757 79238636. 0.060990529 0.039274274 -43.676994 45.294508 6708.0974 73370891. 0.061150754 0.040149649 -43.753362 45.179957 6709.7191 69637332. 0.060544671 0.040675136 -43.829729 45.065406 6711.3409 66686165. 0.059281193 0.041080052 -43.902424 44.950854 6712.9626 60470286. 0.058510582 0.043617197 -43.974548 44.836302 6714.5843 61065557. 0.056926892 0.047347339 -44.041433 44.730073 6716.2061 59689072. 0.055947597 0.048704887 -44.103253 44.631890 6717.8278 62708118. 0.054443458 0.049823065 -44.165073 44.533706 6719.4495 62073903. 0.053738697 0.050942742 -44.231491 44.423108 6721.0713 59245907. 0.055422453 0.050325374 -44.299373 44.308559 6722.6930 57973027. 0.056403739 0.049748466 -44.368958 44.195712 6724.3147 52028240. 0.058050359 0.047298368 -44.441082 44.085403 6725.9365 52160041. 0.060559458 0.040991048 -44.512586 43.975633 6727.5582 47866803. 0.094365061 0.040216692 -44.570769 43.877449 6729.1799 48742052. 0.067041817 0.040925491 -44.628952 43.779265 6730.8017 54283151. 0.013662857 0.041478098 -44.689988 43.676267