# # 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 = 43.173817 km # Date (UTC) = 2015-12-23T09:26:37.333 # Date (julian) = 2457379.89348765 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.1112 9.0194107e+10 0.030016004 0.030507464 -21.242914 50.060359 6496.3526 8.2336589e+10 0.036667500 0.031183336 -21.352361 49.966547 6498.5939 7.2437148e+10 0.043150398 0.031859208 -21.458184 49.872725 6500.8353 6.5433862e+10 0.049539910 0.032535080 -21.563735 49.778902 6503.0766 5.9702011e+10 0.056095530 0.033210953 -21.667827 49.685083 6505.3180 5.5178529e+10 0.063074107 0.033886825 -21.769456 49.591271 6507.5593 5.1485712e+10 0.070714388 0.034562697 -21.871085 49.497459 6509.8007 4.6665491e+10 0.078674545 0.035238570 -21.975896 49.403648 6512.0420 4.3262465e+10 0.087789545 0.035914442 -22.081434 49.309838 6514.2833 3.9834619e+10 0.097788492 0.036590314 -22.185972 49.216027 6516.5247 3.7078373e+10 0.10907912 0.037266187 -22.287602 49.122215 6518.7660 3.4213847e+10 0.12124707 0.037942059 -22.389231 49.028402 6521.0074 3.1456441e+10 0.13441648 0.038617931 -22.488144 48.934582 6523.2487 2.8602034e+10 0.14472999 0.039240761 -22.585877 48.840757 6525.4901 2.5975156e+10 0.15270129 0.039726283 -22.682737 48.748241 6527.7314 2.3917717e+10 0.16066736 0.041247497 -22.774202 48.663813 6529.9728 2.2267463e+10 0.16823837 0.043785330 -22.865667 48.579384 6532.2141 2.1035926e+10 0.17413938 0.046863068 -22.958988 48.492172 6534.4555 1.9690146e+10 0.17712460 0.048071970 -23.056708 48.398360 6536.6968 1.8226414e+10 0.17763547 0.048413961 -23.154428 48.304548 6538.9382 1.6658607e+10 0.17682733 0.049613517 -23.252158 48.210728 6541.1795 1.5226924e+10 0.17488458 0.051268314 -23.349891 48.116905 6543.4209 1.3961548e+10 0.17264892 0.051492349 -23.446917 48.023084 6545.6622 1.2838660e+10 0.17035596 0.052461500 -23.540728 47.929272 6547.9036 1.1771279e+10 0.16871131 0.053630969 -23.634540 47.835460 6550.1449 1.0787365e+10 0.16712782 0.055021641 -23.728351 47.739217 6552.3862 9.8950544e+09 0.16529041 0.055489548 -23.822162 47.641497 6554.6276 9.0827380e+09 0.16320397 0.054845550 -23.915974 47.544025 6556.8689 8.3521636e+09 0.16107983 0.053885375 -24.009785 47.450215 6559.1103 7.7057449e+09 0.15831874 0.052374733 -24.103596 47.356404 6561.3516 7.1080453e+09 0.15560208 0.051199403 -24.197414 47.262587 6563.5930 6.5788954e+09 0.15287448 0.049242423 -24.291238 47.168762 6565.8343 6.0962781e+09 0.15032256 0.047371005 -24.385062 47.074937 6568.0757 5.6394904e+09 0.14847797 0.045702097 -24.475171 46.981126 6570.3170 5.2403048e+09 0.14649594 0.044786187 -24.565074 46.887316 6572.5584 4.8636009e+09 0.14414366 0.043910391 -24.654977 46.793505 6574.7997 4.5297720e+09 0.14128914 0.042470903 -24.744880 46.699692 6577.0411 4.2207977e+09 0.13808774 0.040155868 -24.834782 46.605880 6579.2824 3.9362876e+09 0.13424278 0.036915243 -24.924684 46.508822 6581.5238 3.6686559e+09 0.13077700 0.035438007 -25.014587 46.411102 6583.7651 3.4211777e+09 0.12746875 0.034634403 -25.104492 46.314443 6586.0065 3.1988914e+09 0.12441006 0.033171213 -25.194407 46.220618 6588.2478 2.9924729e+09 0.12242532 0.033297177 -25.284321 46.126793 6590.4891 2.8061130e+09 0.12005704 0.030152174 -25.371435 46.032979 6592.7305 2.6317540e+09 0.11781236 0.027363992 -25.457429 45.939168 6594.9718 2.4700609e+09 0.11546641 0.025639028 -25.543423 45.844748 6597.2132 2.3175997e+09 0.11288837 0.025655453 -25.629417 45.747027 6599.4545 2.1794502e+09 0.11138856 0.024957068 -25.715411 45.649307 6601.6959 2.0549567e+09 0.11105652 0.027373412 -25.801404 45.553923 6603.9372 1.9307083e+09 0.10948916 0.026108435 -25.887398 45.460111 6606.1786 1.8148805e+09 0.10895340 0.027183063 -25.973237 45.366299 6608.4199 1.7036773e+09 0.10624715 0.023721269 -26.055333 45.272476 6610.6613 1.6017436e+09 0.10294035 0.024634810 -26.137430 45.178653 6612.9026 1.5104521e+09 0.10129096 0.023646349 -26.221402 45.084835 6615.1440 1.4137114e+09 0.099820565 0.023255961 -26.307396 44.991023 6617.3853 1.3289027e+09 0.098311265 0.023566999 -26.393389 44.897211 6619.6267 1.2517020e+09 0.097304641 0.024677117 -26.475775 44.799791 6621.8680 1.1855993e+09 0.095749420 0.024801742 -26.557861 44.702070 6624.1094 1.1223799e+09 0.093393241 0.024920848 -26.639946 44.605776 6626.3507 1.0587066e+09 0.091582798 0.026144076 -26.722030 44.511966 6628.5921 9.9582574e+08 0.089609408 0.025943473 -26.804115 44.418155 6630.8334 9.3707842e+08 0.087435947 0.025930355 -26.883056 44.324334 6633.0747 8.8198339e+08 0.085664179 0.026165303 -26.961243 44.230509 6635.3161 8.3016182e+08 0.083943183 0.026447190 -27.040398 44.135717 6637.5574 7.8826475e+08 0.082634004 0.025888395 -27.122483 44.037997 6639.7988 7.4753930e+08 0.082499938 0.025342571 -27.204567 43.940277 6642.0401 7.1177621e+08 0.082929214 0.025153338 -27.283955 43.845253 6644.2815 6.7300099e+08 0.082120757 0.025374028 -27.362132 43.751441 6646.5228 6.3554928e+08 0.081268496 0.026190780 -27.440308 43.657629 6648.7642 6.0344317e+08 0.080223751 0.027475825 -27.518484 43.563818 6651.0055 5.7580906e+08 0.079852491 0.026488397 -27.596659 43.470008 6653.2469 5.4665759e+08 0.079513213 0.027651704 -27.677926 43.366939 6655.4882 5.1685066e+08 0.078089599 0.027811948 -27.761491 43.256986 6657.7296 4.8539896e+08 0.076510303 0.029747381 -27.843440 43.151872 6659.9709 4.5194926e+08 0.075193105 0.031632065 -27.921616 43.058060 6662.2123 4.2840856e+08 0.073684453 0.032925182 -27.999793 42.964248 6664.4536 4.0373330e+08 0.072636222 0.030546368 -28.075070 42.870437 6666.6950 3.8549174e+08 0.072421856 0.027044015 -28.149337 42.776626 6668.9363 3.6741376e+08 0.071114578 0.028299332 -28.223604 42.682099 6671.1776 3.4761882e+08 0.071143578 0.026867880 -28.297872 42.584379 6673.4190 3.3042253e+08 0.070512244 0.028085852 -28.372139 42.486659 6675.6603 3.0894731e+08 0.068446299 0.031063151 -28.452209 42.384052 6677.9017 2.9171076e+08 0.067036695 0.031076375 -28.535761 42.278512 6680.1430 2.7871707e+08 0.067092703 0.029472303 -28.616059 42.175711 6682.3844 2.6484589e+08 0.067708632 0.030718225 -28.690337 42.077978 6684.6257 2.5449904e+08 0.067680769 0.032685845 -28.764614 41.980245 6686.8671 2.4426385e+08 0.066244507 0.034265563 -28.838883 41.885621 6689.1084 2.2753248e+08 0.063574116 0.033918426 -28.913150 41.791810 6691.3498 2.1267296e+08 0.062856244 0.032918740 -28.986501 41.697999 6693.5911 2.0040288e+08 0.062077164 0.031401299 -29.056859 41.604187 6695.8325 1.9440869e+08 0.061872185 0.029706560 -29.127218 41.510375 6698.0738 1.9309739e+08 0.061078540 0.030319132 -29.203525 41.405659 6700.3152 1.8535570e+08 0.059435610 0.030901481 -29.282679 41.295722 6702.5565 1.7270539e+08 0.058465525 0.033321103 -29.358296 41.192271 6704.7979 1.6131408e+08 0.058869384 0.036569341 -29.428655 41.098461 6707.0392 1.5292625e+08 0.058619815 0.040181211 -29.499014 41.004650 6709.2805 1.4765652e+08 0.057971623 0.040954101 -29.576805 40.900928 6711.5219 1.4126752e+08 0.056088731 0.041286006 -29.655972 40.795371 6713.7632 1.2990188e+08 0.054011018 0.046447106 -29.730117 40.696511 6716.0046 1.2150286e+08 0.052286984 0.048408119 -29.800476 40.602699 6718.2459 1.1363744e+08 0.050148341 0.050195441 -29.870886 40.508696 6720.4873 1.1059773e+08 0.049578360 0.050363306 -29.945643 40.398759 6722.7286 1.0684256e+08 0.049062708 0.049704427 -30.020401 40.288822 6724.9700 1.0141719e+08 0.044945954 0.041826726 -30.089028 40.190784 6727.2113 97836219. 0.043396610 0.040678841 -30.155477 40.096973 6729.4527 93119601. 0.042830405 0.040743710 -30.223417 40.001057 6731.6940 89425747. 0.041096932 0.043131251 -30.298175 39.895517 6733.9354 81402675. 0.040103564 0.049002684 -30.372932 39.789976 6736.1767 77042719. 0.042008435 0.051023081 -30.440175 39.691505 6738.4181 74985416. 0.043329649 0.059622707 -30.506634 39.593772 6740.6594 74094269. 0.042764895 0.065176847 -30.575976 39.493326 6742.9008 73001348. 0.039514046 0.070805611 -30.650733 39.387788 6745.1421 68724978. 0.036184340 0.078626625 -30.725490 39.282249 6747.3834 63804750. 0.031689544 0.067229154 -30.800247 39.176709 6749.6248 59461174. 0.029428488 0.072106863 -30.875004 39.071169 6751.8661 54812344. 0.021114526 0.074077881 -30.939996 38.971880 6754.1075 52861681. 0.023794266 0.076040613 -31.002536 38.874160 6756.3488 52604774. 0.030212565 0.075064520 -31.068023 38.774555