# # 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 = 59.696011 km # Date (UTC) = 2015-01-10T10:32:43.933 # Date (julian) = 2457032.93939737 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.5760 6.2689023e+10 0.047328581 0.032456911 97.217677 36.121570 6503.0393 5.7185662e+10 0.057202735 0.033199689 97.295010 35.990299 6505.5025 5.1699890e+10 0.067315089 0.033942467 97.372344 35.859796 6507.9657 4.6726340e+10 0.077775247 0.034685245 97.445942 35.725576 6510.4289 4.2170018e+10 0.088615717 0.035428023 97.518435 35.590256 6512.8921 3.8013411e+10 0.099875276 0.036170801 97.594321 35.458332 6515.3554 3.4245640e+10 0.11157903 0.036913578 97.671643 35.327847 6517.8186 3.0914361e+10 0.12378116 0.037656356 97.745907 35.194301 6520.2818 2.7928239e+10 0.13646091 0.038399134 97.818400 35.058983 6522.7450 2.5252661e+10 0.14757915 0.039112345 97.890893 34.926391 6525.2082 2.2861039e+10 0.15452691 0.039758448 97.963385 34.795905 6527.6715 2.0709989e+10 0.15990282 0.041203965 98.035878 34.663028 6530.1347 1.8801293e+10 0.16497233 0.044017260 98.108371 34.527710 6532.5979 1.7060880e+10 0.16886472 0.047183684 98.180863 34.394450 6535.0611 1.5504632e+10 0.17139528 0.048197777 98.253356 34.263964 6537.5244 1.4092511e+10 0.17266203 0.048932435 98.324125 34.131756 6539.9876 1.2840745e+10 0.17408782 0.050839061 98.391784 33.996438 6542.4508 1.1727362e+10 0.17274764 0.051173385 98.460831 33.862508 6544.9140 1.0721632e+10 0.17166000 0.052385816 98.533320 33.732023 6547.3772 9.8303758e+09 0.16940571 0.053430821 98.604758 33.601533 6549.8405 9.0316552e+09 0.16733167 0.054822775 98.672431 33.471028 6552.3037 8.3196308e+09 0.16516071 0.055510330 98.740101 33.339805 6554.7669 7.6898873e+09 0.16281581 0.054848473 98.807760 33.204487 6557.2301 7.1138619e+09 0.16040820 0.053721865 98.875806 33.069556 6559.6933 6.6184263e+09 0.15766187 0.052308922 98.948295 32.939070 6562.1566 6.1783968e+09 0.15479217 0.050730926 99.020726 32.808585 6564.6198 5.7744908e+09 0.15204720 0.048490710 99.088394 32.678099 6567.0830 5.4037143e+09 0.14999566 0.046547003 99.156057 32.547613 6569.5462 5.0418611e+09 0.14822684 0.044887975 99.223716 32.412575 6572.0094 4.7106947e+09 0.14673480 0.044224744 99.291374 32.277256 6574.4727 4.4123712e+09 0.14441505 0.042627983 99.354816 32.146155 6576.9359 4.1400514e+09 0.14215288 0.040294162 99.417641 32.015670 6579.3991 3.8897604e+09 0.13923698 0.036851087 99.484349 31.885184 6581.8623 3.6488766e+09 0.13684930 0.035335482 99.552008 31.754699 6584.3256 3.4207399e+09 0.13444229 0.034338169 99.619667 31.624213 6586.7888 3.2118343e+09 0.13215663 0.033161100 99.687325 31.493728 6589.2520 3.0211102e+09 0.12971554 0.032546036 99.751770 31.360030 6591.7152 2.8512764e+09 0.12656479 0.028394869 99.814595 31.224711 6594.1784 2.6935491e+09 0.12331899 0.026074569 99.877428 31.092260 6596.6417 2.5449436e+09 0.11964376 0.025724356 99.940266 30.961755 6599.1049 2.4094553e+09 0.11680563 0.024936038 100.00310 30.831260 6601.5681 2.2791034e+09 0.11621170 0.027313234 100.06592 30.700774 6604.0313 2.1588528e+09 0.11452657 0.026089876 100.13096 30.570289 6606.4945 2.0469103e+09 0.11417212 0.026615280 100.19862 30.439804 6608.9578 1.9411022e+09 0.11136639 0.023707048 100.26440 30.309319 6611.4210 1.8426507e+09 0.10866683 0.024689990 100.32723 30.178833 6613.8842 1.7516258e+09 0.10781940 0.023898009 100.38851 30.048347 6616.3474 1.6614456e+09 0.10649268 0.023336828 100.44651 29.917862 6618.8107 1.5770604e+09 0.10598085 0.024382934 100.50571 29.787376 6621.2739 1.4953305e+09 0.10526879 0.024998670 100.56853 29.656890 6623.7371 1.4185779e+09 0.10351230 0.024764908 100.63136 29.526405 6626.2003 1.3503633e+09 0.10215167 0.026335684 100.69419 29.395920 6628.6635 1.2856949e+09 0.10042319 0.025972497 100.75701 29.265435 6631.1268 1.2243049e+09 0.098551281 0.025943642 100.81984 29.134950 6633.5900 1.1679531e+09 0.096915985 0.026255257 100.88246 29.004464 6636.0532 1.1130963e+09 0.095072698 0.026529093 100.94045 28.873979 6638.5164 1.0611387e+09 0.093726342 0.025649143 100.99845 28.743493 6640.9796 1.0140008e+09 0.093881045 0.025150791 101.05645 28.612988 6643.4429 9.6444815e+08 0.092996001 0.025259485 101.11445 28.482482 6645.9061 9.1951969e+08 0.091506978 0.025876151 101.17682 28.351995 6648.3693 8.8170474e+08 0.089926460 0.027211499 101.23964 28.221511 6650.8325 8.4042783e+08 0.088851586 0.026445826 101.29843 28.091025 6653.2957 8.0210797e+08 0.088002333 0.027676660 101.35643 27.960540 6655.7590 7.6634362e+08 0.086044391 0.027923824 101.41442 27.830054 6658.2222 7.2900273e+08 0.084337831 0.030455138 101.47241 27.699569 6660.6854 6.9893993e+08 0.082830668 0.032249004 101.53041 27.569083 6663.1486 6.7231747e+08 0.081553239 0.032442023 101.58840 27.438596 6665.6119 6.4927078e+08 0.081116629 0.027544586 101.64640 27.308111 6668.0751 6.3021727e+08 0.080379797 0.027537211 101.70439 27.177627 6670.5383 6.0521538e+08 0.079908741 0.027079248 101.76701 27.036731 6673.0015 5.7396475e+08 0.079660914 0.027461487 101.83329 26.887602 6675.4647 5.4198552e+08 0.077769997 0.030688502 101.88976 26.756030 6677.9280 5.1514443e+08 0.076262211 0.031039026 101.94292 26.630377 6680.3912 4.9486965e+08 0.076549967 0.029525889 101.99936 26.501444 6682.8544 4.7688436e+08 0.077269081 0.031077339 102.05735 26.370959 6685.3176 4.5794908e+08 0.076971117 0.033040326 102.11535 26.240473 6687.7808 4.4123787e+08 0.074563330 0.033907416 102.17334 26.109987 6690.2441 4.2336286e+08 0.072277383 0.033087894 102.22872 25.979491 6692.7073 4.0835906e+08 0.071099983 0.031943999 102.28189 25.848986 6695.1705 3.9266630e+08 0.070333781 0.029828154 102.33734 25.720769 6697.6337 3.7725142e+08 0.069478704 0.030171465 102.39533 25.595117 6700.0970 3.6173697e+08 0.067642229 0.030739629 102.45444 25.460022 6702.5602 3.4173524e+08 0.066253107 0.033324029 102.51519 25.310892 6705.0234 3.2420916e+08 0.066472360 0.036710193 102.57146 25.172794 6707.4866 3.0621236e+08 0.066003187 0.040117119 102.62462 25.042309 6709.9498 2.9726933e+08 0.064798738 0.040528402 102.67778 24.914348 6712.4131 2.8702760e+08 0.062412161 0.042596865 102.73094 24.788694 6714.8763 2.7663157e+08 0.060229464 0.047369287 102.78629 24.660851 6717.3395 2.6540759e+08 0.058042547 0.049853269 102.84428 24.530366 6719.8027 2.5239319e+08 0.056444988 0.050607197 102.90333 24.394842 6722.2659 2.4539054e+08 0.056415940 0.050276432 102.96409 24.251236 6724.7292 2.3368682e+08 0.052663409 0.043837694 103.02049 24.115155 6727.1924 2.2306230e+08 0.050412772 0.040704077 103.07365 23.984670 6729.6556 2.0999994e+08 0.049687657 0.040608451 103.12437 23.856622 6732.1188 1.9865410e+08 0.047857840 0.043762084 103.17270 23.730969 6734.5820 1.9258164e+08 0.047382258 0.049318579 103.22644 23.595099 6737.0453 1.8836876e+08 0.049266303 0.054279766 103.28720 23.445969 6739.5085 1.8399863e+08 0.049728709 0.063448845 103.34321 23.311505 6741.9717 1.7774318e+08 0.047558277 0.068530065 103.39637 23.185852 6744.4349 1.6993421e+08 0.042698969 0.078129820 103.45375 23.047159 6746.8982 1.6022654e+08 0.038184868 0.068545256 103.51451 22.898030 6749.3614 1.5435603e+08 0.036994891 0.072178989 103.56600 22.766391 6751.8246 1.4834132e+08 0.033057668 0.074060314 103.61433 22.640738 6754.2878 1.4268494e+08 0.031355649 0.075750628 103.67106 22.499220 6756.7510 1.3742756e+08 0.028333047 0.076099437 103.73181 22.350089 6759.2143 1.3232865e+08 0.029058992 0.075871658 103.78181 22.221274 6761.6775 1.2901238e+08 0.031652814 0.078024198 103.83014 22.095621 6764.1407 1.2344059e+08 0.035842665 0.079490026 103.88836 21.955676 6766.6039 1.1594683e+08 0.036952302 0.081079828 103.94912 21.812070 6769.0671 1.1032658e+08 0.032056801 0.084617111 103.99764 21.686140 6771.5304 1.0548227e+08 0.027683666 0.090591505 104.04598 21.560468 6773.9936 1.0218924e+08 0.023299985 0.096565900 104.10063 21.413294 6776.4568 1.0067150e+08 0.018897624 0.10254029 104.15645 21.264752 6778.9200 96097303. 0.014531504 0.10851469 104.21721 21.121146 6781.3832 92013816. 0.010167471 0.11448908 104.27429 20.982848 6783.8465 89159830. 0.0057927029 0.12046348 104.32262 20.857195 6786.3097 84869460. 0.0014356434 0.12643787 104.37251 20.727475 6788.7729 82639966. -0.0029333288 0.13241227 104.42774 20.583869 6791.2361 79642840. -0.0072935278 0.13838666 104.48297 20.437965 6793.6994 75814514. -0.011645084 0.14436105 104.53821 20.288836 6796.1626 73809711. -0.016008722 0.15033545 104.58926 20.153921 6798.6258 71742157. -0.020371405 0.15630984 104.63759 20.028268 6801.0890 68986897. -0.024730315 0.16228424 104.68962 19.892988 6803.5522 68165843. -0.029108444 0.16825863 104.74486 19.749382 6806.0155 64828957. -0.033473046 0.17423303 104.80009 19.605776 6808.4787 59151396. -0.037831660 0.18020742 104.85532 19.462170 6810.9419 57149949. -0.042233613 0.18618181 104.91055 19.318564 6813.4051 53378194. -0.046660787 0.19215621 104.96521 19.174957 6815.8683 54192862. -0.051141482 0.19813060 105.01492 19.031351 6818.3316 53742161. -0.055695214 0.20410500 105.06625 18.887745 6820.7948 50606227. -0.060405049 0.21007939 105.12149 18.744139 6823.2580 50076185. -0.065937330 0.21605379 105.17672 18.600533 6825.7212 46565816. -0.077289103 0.22202818 105.23195 18.456927 6828.1845 45615203. -0.076189604 0.22800257 105.28718 18.313320 6830.6477 44827167. -0.068199236 0.23397697 105.34242 18.169713