# # 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 = 63.635755 km # Date (UTC) = 2011-12-10T10:37:07.980 # Date (julian) = 2455905.94245347 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.4219 1.0663124e+11 0.096300519 0.035425920 93.955714 32.500670 6513.3868 8.9626947e+10 0.10965652 0.036319957 94.042964 32.337796 6516.3516 7.4547886e+10 0.12305319 0.037213994 94.123370 32.185640 6519.3164 6.2865440e+10 0.13671223 0.038108031 94.195771 32.046016 6522.2813 5.4440295e+10 0.15008624 0.038990906 94.270889 31.906403 6525.2461 4.7816956e+10 0.15650104 0.039754128 94.348443 31.766799 6528.2109 4.1789800e+10 0.16049369 0.041609819 94.428301 31.616842 6531.1758 3.6405694e+10 0.16297838 0.045484508 94.509738 31.459786 6534.1406 3.1745327e+10 0.16492250 0.047983887 94.583268 31.317983 6537.1054 2.8101774e+10 0.16527582 0.048734931 94.655659 31.178378 6540.0703 2.5320029e+10 0.16564884 0.050887294 94.728056 31.038756 6543.0351 2.2804621e+10 0.16412028 0.051391103 94.800517 30.899009 6545.9999 2.0411215e+10 0.16279399 0.052464461 94.881946 30.741967 6548.9648 1.8200319e+10 0.16262784 0.053955754 94.960784 30.589920 6551.9296 1.6265208e+10 0.16290264 0.055562049 95.033171 30.450316 6554.8944 1.4755196e+10 0.16191856 0.054851149 95.105559 30.310712 6557.8592 1.3521835e+10 0.15972380 0.053327530 95.177946 30.171108 6560.8241 1.2467463e+10 0.15565088 0.051531299 95.248166 30.031503 6563.7889 1.1526981e+10 0.15126430 0.049015784 95.315381 29.891898 6566.7537 1.0588915e+10 0.14775556 0.046756497 95.389500 29.743818 6569.7186 9.6731213e+09 0.14524559 0.044899192 95.470949 29.586737 6572.6834 8.8082536e+09 0.14335075 0.043838791 95.541496 29.443046 6575.6482 8.0695206e+09 0.14090026 0.041724329 95.608716 29.303442 6578.6131 7.5049987e+09 0.13807502 0.037681519 95.675932 29.163838 6581.5779 7.0018570e+09 0.13561910 0.035421615 95.743147 29.024233 6584.5427 6.5057723e+09 0.13357166 0.034219869 95.817909 28.868955 6587.5076 6.0069192e+09 0.13175440 0.033270824 95.892025 28.715020 6590.4724 5.5378692e+09 0.12944503 0.030183357 95.959245 28.575415 6593.4372 5.1499007e+09 0.12677498 0.026695742 96.026465 28.435806 6596.4020 4.8304420e+09 0.12352685 0.025725446 96.093690 28.296184 6599.3669 4.5232009e+09 0.12159032 0.024951796 96.163526 28.152947 6602.3317 4.2132084e+09 0.12127922 0.027233566 96.239144 28.001706 6605.2965 3.9136779e+09 0.12019070 0.026913817 96.309791 27.857354 6608.2614 3.6445731e+09 0.11749629 0.023725461 96.377010 27.717750 6611.2262 3.4314183e+09 0.11321066 0.024814206 96.440824 27.578145 6614.1910 3.2388492e+09 0.11139974 0.023808878 96.502868 27.438540 6617.1559 3.0385659e+09 0.10930299 0.023490925 96.574742 27.286301 6620.1207 2.8427083e+09 0.10802908 0.024806091 96.650290 27.129368 6623.0855 2.6635971e+09 0.10551060 0.024523512 96.712352 26.994901 6626.0504 2.5018339e+09 0.10278203 0.026526745 96.775368 26.858844 6629.0152 2.3499154e+09 0.099864535 0.026106359 96.850991 26.701787 6631.9800 2.1986631e+09 0.097305617 0.026030316 96.921836 26.550871 6634.9448 2.0584558e+09 0.095531700 0.026395765 96.983880 26.411267 6637.9097 1.9445021e+09 0.094090920 0.025715878 97.045925 26.273823 6640.8745 1.8501998e+09 0.094414270 0.025163654 97.107973 26.139388 6643.8393 1.7536561e+09 0.093795066 0.025319349 97.173774 25.994008 6646.8042 1.6546649e+09 0.092704072 0.026336414 97.243579 25.836950 6649.7690 1.5613767e+09 0.091738606 0.026573653 97.307455 25.697181 6652.7338 1.4714671e+09 0.091312880 0.027452429 97.369507 25.562730 6655.6987 1.3930652e+09 0.089526876 0.027898906 97.438001 25.409494 6658.6635 1.3216895e+09 0.087334143 0.031237805 97.506939 25.254967 6661.6283 1.2517774e+09 0.085449674 0.032854971 97.568987 25.120532 6664.5932 1.1856329e+09 0.084051345 0.030035744 97.632413 24.982075 6667.5580 1.1225457e+09 0.083478638 0.027308417 97.702214 24.825018 6670.5228 1.0639635e+09 0.082573283 0.027086418 97.768458 24.678337 6673.4877 1.0101869e+09 0.081738571 0.028188537 97.830506 24.543903 6676.4525 9.6020020e+08 0.078726480 0.032005347 97.893576 24.397588 6679.4173 9.0943736e+08 0.077741666 0.029922922 97.957572 24.240507 6682.3821 8.6281585e+08 0.078650297 0.030716516 98.019995 24.101675 6685.3470 8.1901697e+08 0.078249801 0.033071330 98.082039 23.967243 6688.3118 7.7755976e+08 0.074919275 0.033857166 98.145777 23.818157 6691.2766 7.4096210e+08 0.072568917 0.032935994 98.208678 23.668692 6694.2415 7.0581773e+08 0.071048804 0.030922595 98.265554 23.529087 6697.2063 6.7609241e+08 0.070375309 0.030117373 98.325257 23.386939 6700.1711 6.4394478e+08 0.068446653 0.030794651 98.395062 23.235699 6703.1360 6.0814977e+08 0.067568202 0.034015454 98.461960 23.084458 6706.1008 5.7534850e+08 0.067785107 0.038621826 98.525947 22.933218 6709.0656 5.4677818e+08 0.067200364 0.041090803 98.584391 22.795078 6712.0305 5.2450057e+08 0.064735250 0.041886503 98.641275 22.660626 6714.9953 5.0461575e+08 0.062221439 0.047378234 98.704172 22.511961 6717.9601 4.8097111e+08 0.059585825 0.049814881 98.768159 22.359979 6720.9249 4.5714368e+08 0.058844899 0.050312595 98.832145 22.202922 6723.8898 4.3320612e+08 0.057009242 0.049865189 98.896132 22.048241 6726.8546 4.1023583e+08 0.052634770 0.040959075 98.960119 21.897000 6729.8194 3.8726630e+08 0.051672541 0.040499250 99.024102 21.745760 6732.7843 3.6563269e+08 0.049828370 0.043884591 99.088084 21.594519 6735.7491 3.5211135e+08 0.050518053 0.050088660 99.145173 21.459583 6738.7139 3.4065211e+08 0.052007223 0.061251622 99.202306 21.324542 6741.6788 3.2879724e+08 0.050058251 0.067694566 99.266293 21.173301 6744.6436 3.1262249e+08 0.044672902 0.078291216 99.328440 21.022054 6747.6084 2.9536808e+08 0.039981659 0.067151703 99.386621 20.870790 6750.5733 2.8212941e+08 0.037227338 0.072982991 99.448272 20.719541 6753.5381 2.7171749e+08 0.033911877 0.074718641 99.512254 20.568300 6756.5029 2.6048124e+08 0.030510528 0.075460994 99.571131 20.417060 6759.4677 2.4752527e+08 0.030920463 0.075932830 99.630233 20.265820 6762.4326 2.3578098e+08 0.035251930 0.077353056 99.694220 20.114579 6765.3974 2.2614249e+08 0.038622801 0.079603742 99.755642 19.963339 6768.3622 2.1578672e+08 0.035282372 0.082159460 99.813811 19.812098 6771.3271 2.0514606e+08 0.029434705 0.090098438 99.876178 19.660858 6774.2919 1.9386585e+08 0.024021089 0.097289457 99.940150 19.509632 6777.2567 1.8400690e+08 0.018573869 0.10448048 99.998318 19.364208 6780.2216 1.7705965e+08 0.013085536 0.11167149 100.05649 19.217136 6783.1864 1.7123220e+08 0.0075729220 0.11886251 100.11466 19.065895 6786.1512 1.6540905e+08 0.0020470576 0.12605353 100.17282 18.914654 6789.1161 1.6071018e+08 -0.0034940326 0.13324455 100.23099 18.763413 6792.0809 1.5442874e+08 -0.0090429664 0.14043557 100.30181 18.593909 6795.0457 1.4748625e+08 -0.014608597 0.14762659 100.36984 18.430403 6798.0106 1.3981021e+08 -0.020194085 0.15481761 100.42801 18.284958 6800.9754 1.3119374e+08 -0.025811036 0.16200862 100.48619 18.135908 6803.9402 1.2572563e+08 -0.031413715 0.16919964 100.54436 17.984667 6806.9050 1.2076959e+08 -0.037017574 0.17639066 100.61004 17.813912 6809.8699 1.1667357e+08 -0.042606638 0.18358168 100.67320 17.652000 6812.8347 1.1035672e+08 -0.048258163 0.19077270 100.73137 17.506576 6815.7995 1.0462992e+08 -0.053916313 0.19796372 100.78954 17.357200 6818.7644 1.0404754e+08 -0.059390502 0.20515474 100.84771 17.205960 6821.7292 1.0052687e+08 -0.064965500 0.21234575 100.90748 17.033962 6824.6940 98136625. -0.070481402 0.21953677 100.96655 16.873629 6827.6589 92998613. -0.076130220 0.22672779 101.02472 16.728205 6830.6237 86720666. -0.081872424 0.23391881 101.08902 16.562559 6833.5885 84383470. -0.087357273 0.24110983 101.15550 16.391259 6836.5534 79761311. -0.093048005 0.24830085 101.22198 16.225057 6839.5182 77282653. -0.098603697 0.25549187 101.27816 16.069761 6842.4830 75123858. -0.10417676 0.26268288 101.33065 15.918374 6845.4478 72967807. -0.10982053 0.26987390 101.39713 15.752172 6848.4127 69688711. -0.11571572 0.27706492 101.46025 15.585970 6851.3775 67795005. -0.12160564 0.28425594 101.52008 15.419788 6854.3423 65813650. -0.12775688 0.29144696 101.57825 15.268547 6857.3072 63248541. -0.13443439 0.29863798 101.63689 15.113084 6860.2720 58672696. -0.14239944 0.30582900 101.69672 14.946882 6863.2368 54737335. -0.15205195 0.31302001 101.76173 14.780680 6866.2017 51449735. -0.16633316 0.32021103 101.82639 14.612657 6869.1665 50613928. -0.21963527 0.32740205 101.88622 14.439807 6872.1313 49702880. -0.18443331 0.33459307 101.95117 14.272075 6875.0962 46832923. -0.097815202 0.34178409 102.01589 14.105873