# # 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 = 44.800719 km # Date (UTC) = 2017-01-10T09:46:58.229 # Date (julian) = 2457763.90761839 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6515.5587 4.8569620e+10 0.13377445 0.036974880 109.32803 34.953448 6517.4929 4.3729477e+10 0.14349156 0.037558135 109.38508 34.850863 6519.4271 3.9405749e+10 0.15329438 0.038141389 109.44200 34.748401 6521.3613 3.5419292e+10 0.16315106 0.038724643 109.49766 34.644677 6523.2955 3.1812917e+10 0.16939708 0.039252345 109.55079 34.538422 6525.2297 2.8607988e+10 0.17418018 0.039756002 109.60392 34.432166 6527.1639 2.5675694e+10 0.17772146 0.040835452 109.65969 34.328555 6529.0981 2.3174124e+10 0.17956130 0.042392032 109.71661 34.226093 6531.0323 2.0975470e+10 0.18118388 0.045275683 109.77354 34.123395 6532.9665 1.8970489e+10 0.18356569 0.047491601 109.83046 34.017138 6534.9007 1.7182165e+10 0.18379234 0.048196519 109.88738 33.910881 6536.8349 1.5527773e+10 0.18269727 0.048537516 109.94269 33.806245 6538.7691 1.4012229e+10 0.18155628 0.049531199 109.99581 33.703784 6540.7033 1.2645302e+10 0.18025315 0.051186368 110.04894 33.601323 6542.6375 1.1477333e+10 0.17802900 0.051244278 110.10007 33.505207 6544.5717 1.0554463e+10 0.17557781 0.052108146 110.15066 33.410758 6546.5059 9.8133368e+09 0.17235109 0.052880828 110.20126 33.316308 6548.4401 9.1356517e+09 0.16914929 0.053799087 110.25396 33.215217 6550.3743 8.4508862e+09 0.16624604 0.055079092 110.30710 33.112740 6552.3085 7.7891212e+09 0.16346097 0.055509105 110.36023 33.009535 6554.2428 7.1770251e+09 0.16040171 0.054837474 110.41336 32.903279 6556.1770 6.6352864e+09 0.15777618 0.053987109 110.46649 32.797023 6558.1112 6.1477093e+09 0.15557783 0.053144579 110.51961 32.692882 6560.0454 5.6911011e+09 0.15297352 0.052233402 110.57274 32.590420 6561.9796 5.2688443e+09 0.14992716 0.050889968 110.62587 32.487959 6563.9138 4.8879218e+09 0.14668490 0.048871334 110.67900 32.381997 6565.8480 4.5402521e+09 0.14424468 0.047355499 110.73213 32.275741 6567.7822 4.2557047e+09 0.14230927 0.045955826 110.78526 32.170574 6569.7164 3.9813971e+09 0.14026943 0.044899051 110.83839 32.068113 6571.6506 3.7288422e+09 0.13812149 0.044325584 110.89152 31.965651 6573.5848 3.4933794e+09 0.13555524 0.043188190 110.94217 31.863189 6575.5190 3.2700807e+09 0.13309768 0.041853978 110.99150 31.760727 6577.4532 3.0768545e+09 0.13033854 0.039508482 111.04090 31.658198 6579.3874 2.8810868e+09 0.12721392 0.036857516 111.09403 31.551944 6581.3216 2.6950034e+09 0.12442680 0.035499217 111.14716 31.445688 6583.2558 2.5259278e+09 0.12199679 0.034892177 111.19884 31.340880 6585.1900 2.3692516e+09 0.11944332 0.033818844 111.24817 31.238419 6587.1242 2.2273837e+09 0.11684558 0.033185896 111.29750 31.135958 6589.0584 2.0961858e+09 0.11412679 0.032930027 111.34683 31.033496 6590.9927 1.9718097e+09 0.11093541 0.029215582 111.39617 30.931034 6592.9269 1.8596145e+09 0.10829295 0.027173267 111.44593 30.828571 6594.8611 1.7519686e+09 0.10562805 0.025699843 111.49906 30.726094 6596.7953 1.6489294e+09 0.10307437 0.025723658 111.55220 30.623617 6598.7295 1.5597648e+09 0.10145009 0.025058891 111.60091 30.524968 6600.6637 1.4876050e+09 0.10138076 0.026354268 111.64476 30.430520 6602.5979 1.4243678e+09 0.10065471 0.027006426 111.68861 30.336071 6604.5321 1.3736028e+09 0.099560303 0.026387211 111.73527 30.237518 6606.4663 1.3077364e+09 0.098924024 0.026666054 111.78460 30.135057 6608.4005 1.2384729e+09 0.096664197 0.023721782 111.83393 30.032595 6610.3347 1.1753207e+09 0.094095234 0.024322777 111.87994 29.930133 6612.2689 1.1105178e+09 0.092400353 0.024119836 111.92548 29.827671 6614.2031 1.0576936e+09 0.091488836 0.023800557 111.97194 29.725209 6616.1373 9.9520887e+08 0.090198388 0.023303851 112.02127 29.622747 6618.0715 9.4506007e+08 0.089725757 0.023824803 112.07060 29.520286 6620.0057 9.0323517e+08 0.089098526 0.024769043 112.11993 29.417824 6621.9399 8.5610181e+08 0.087991108 0.024777903 112.16927 29.315362 6623.8741 8.1816675e+08 0.086221486 0.024815679 112.21860 29.212900 6625.8083 7.7396504e+08 0.085283754 0.026362197 112.26425 29.110439 6627.7425 7.3751021e+08 0.083565888 0.025603644 112.30979 29.007978 6629.6768 6.9979172e+08 0.082401665 0.025986746 112.35660 28.905517 6631.6110 6.5904923e+08 0.080803793 0.025992827 112.40594 28.803055 6633.5452 6.2536593e+08 0.079499960 0.026247432 112.45527 28.700593 6635.4794 5.9858817e+08 0.078124925 0.026471676 112.50195 28.598121 6637.4136 5.7272202e+08 0.077004968 0.025958857 112.54749 28.495644 6639.3478 5.4701360e+08 0.076485367 0.025503772 112.59303 28.393168 6641.2820 5.2182459e+08 0.077251586 0.025149258 112.63857 28.290706 6643.2162 4.9705256e+08 0.077048667 0.025225260 112.68411 28.188243 6645.1504 4.7656372e+08 0.076412459 0.025522137 112.73129 28.085782 6647.0846 4.5556902e+08 0.075558791 0.026482320 112.78062 27.983321 6649.0188 4.3192361e+08 0.074666054 0.027607771 112.82995 27.880860 6650.9530 4.1111881e+08 0.074579534 0.026473407 112.87626 27.778398 6652.8872 3.8036476e+08 0.074545863 0.027494629 112.92180 27.675936 6654.8214 3.5737823e+08 0.073701938 0.027686295 112.96734 27.573475 6656.7556 3.4231345e+08 0.072054668 0.028686622 113.01288 27.471013 6658.6898 3.2188650e+08 0.070842335 0.031284500 113.05842 27.368551 6660.6240 3.0942174e+08 0.069714164 0.032193212 113.10396 27.266089 6662.5582 2.8840822e+08 0.068670264 0.032731068 113.14950 27.163627 6664.4924 2.7148868e+08 0.067820778 0.030404266 113.19503 27.061165 6666.4266 2.6152301e+08 0.067703360 0.026991732 113.23719 26.958704 6668.3609 2.4597871e+08 0.066882472 0.027790102 113.27894 26.856243 6670.2951 2.3652805e+08 0.066539187 0.027191938 113.32165 26.753782 6672.2293 2.2947947e+08 0.066174996 0.027012483 113.36719 26.651320 6674.1635 2.2267200e+08 0.065215088 0.029092686 113.41273 26.548858 6676.0977 2.1819610e+08 0.063003245 0.031776673 113.45827 26.446387 6678.0319 2.0879861e+08 0.062046024 0.030915293 113.50382 26.343910 6679.9661 1.9723728e+08 0.062117728 0.029469445 113.54937 26.241433 6681.9003 1.8701833e+08 0.062735115 0.030348044 113.59116 26.138971 6683.8345 1.7866665e+08 0.062970769 0.032411538 113.63291 26.036509 6685.7687 1.7232293e+08 0.062584594 0.033516771 113.67598 25.935379 6687.7029 1.6437475e+08 0.060546578 0.033950885 113.72152 25.836712 6689.6371 1.5706829e+08 0.058464314 0.033442526 113.76706 25.738045 6691.5713 1.4994897e+08 0.057541501 0.032866471 113.80988 25.636662 6693.5055 1.4751179e+08 0.056765113 0.031430665 113.85162 25.534201 6695.4397 1.4542615e+08 0.056503561 0.029778702 113.89336 25.431740 6697.3739 1.3964103e+08 0.055902880 0.030138586 113.93511 25.329278 6699.3081 1.3043247e+08 0.054567955 0.031306114 113.97685 25.226817 6701.2423 1.2425717e+08 0.052902471 0.031765023 114.02319 25.117833 6703.1765 1.2008238e+08 0.052825590 0.034116999 114.07523 25.000731 6705.1107 1.1462267e+08 0.052961736 0.036865492 114.12584 24.886207 6707.0450 1.1069024e+08 0.052655466 0.040180387 114.16758 24.787540 6708.9792 1.0363460e+08 0.052099153 0.041109846 114.20933 24.688873 6710.9134 95138502. 0.050514097 0.040675274 114.25107 24.588292 6712.8476 88511840. 0.048711735 0.043403608 114.29281 24.485830 6714.7818 82861054. 0.046905582 0.047362182 114.33455 24.383369 6716.7160 81637576. 0.045417101 0.049455929 114.37629 24.280907 6718.6502 87070984. 0.043975297 0.050825024 114.41804 24.178445 6720.5844 84392072. 0.044151101 0.050352055 114.45978 24.076873 6722.5186 85199724. 0.044102041 0.049964089 114.50153 23.978206 6724.4528 83434995. 0.041574714 0.046145513 114.54327 23.879540 6726.3870 80484556. 0.039175097 0.040954858 114.58859 23.769826 6728.3212 78270544. 0.039064482 0.040083356 114.63630 23.652724 6730.2554 72940335. 0.037923221 0.040729104 114.68114 23.541034 6732.1896 67962183. 0.036676015 0.043775117 114.71909 23.442367 6734.1238 64505023. 0.036075929 0.049346150 114.75704 23.343699 6736.0580 64077790. 0.037979761 0.050574382 114.79749 23.242524 6737.9922 61032785. 0.039211788 0.057296347 114.83924 23.140048 6739.9264 62683829. 0.039296446 0.063960335 114.88113 23.037328 6741.8606 58506844. 0.037157170 0.068213294 114.92884 22.924563 6743.7948 52069854. 0.032212662 0.076409460 114.97654 22.811799 6745.7291 46398099. 0.029601225 0.078873374 115.01725 22.706432 6747.6633 40018863. 0.022867255 0.067132827 115.05519 22.603970 6749.5975 41467402. 0.018979230 0.072114347 115.09346 22.501823 6751.5317 40046121. 0.0096579486 0.073936463 115.13520 22.403156 6753.4659 41265499. -0.026290027 0.074484939 115.17694 22.304490 6755.4001 43651073. 0.00091794777 0.074429937 115.21942 22.197569 6757.3343 45776190. 0.054025540 0.075725597 115.26279 22.080466