# # 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 = 55.760891 km # Date (UTC) = 2013-12-20T10:11:01.409 # Date (julian) = 2456646.92432187 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.1817 9.3990071e+10 0.022171748 0.029624062 102.27771 30.790842 6493.3469 8.5588271e+10 0.028698047 0.030276995 102.33063 30.688873 6495.5122 7.7122391e+10 0.034925881 0.030929927 102.38727 30.586917 6497.6775 6.9215342e+10 0.040848658 0.031582860 102.44391 30.484961 6499.8428 6.2496766e+10 0.046587888 0.032235793 102.49919 30.383005 6502.0080 5.6904840e+10 0.052385465 0.032888726 102.55205 30.281049 6504.1733 5.2164553e+10 0.058432192 0.033541659 102.60492 30.179094 6506.3386 4.8208596e+10 0.065043404 0.034194591 102.65778 30.077137 6508.5039 4.4664033e+10 0.072395016 0.034847524 102.71065 29.975181 6510.6691 4.1413578e+10 0.080692008 0.035500457 102.76352 29.873224 6512.8344 3.8366430e+10 0.090045555 0.036153390 102.81639 29.771256 6514.9997 3.5448636e+10 0.10048725 0.036806323 102.86926 29.669287 6517.1650 3.2751187e+10 0.11215618 0.037459255 102.92213 29.567324 6519.3302 3.0284454e+10 0.12505285 0.038112188 102.97500 29.465367 6521.4955 2.8021357e+10 0.13911676 0.038765121 103.02786 29.363411 6523.6608 2.5941224e+10 0.14933961 0.039342884 103.07782 29.261455 6525.8261 2.3971851e+10 0.15786684 0.039687939 103.12691 29.159499 6527.9913 2.2076455e+10 0.16690563 0.041436186 103.17646 29.057544 6530.1566 2.0327912e+10 0.17387047 0.044047934 103.22932 28.955587 6532.3219 1.8803223e+10 0.17816847 0.046953084 103.28219 28.853631 6534.4871 1.7477741e+10 0.17914746 0.048080832 103.33506 28.751669 6536.6524 1.6292356e+10 0.17794260 0.048374242 103.38793 28.649701 6538.8177 1.5123058e+10 0.17671738 0.049554857 103.44080 28.547732 6540.9830 1.3978102e+10 0.17494789 0.051318484 103.49055 28.445774 6543.1482 1.2919206e+10 0.17306176 0.051420802 103.53964 28.343817 6545.3135 1.1976216e+10 0.17124450 0.052458376 103.58874 28.241861 6547.4788 1.1099570e+10 0.16946924 0.053469442 103.63782 28.139905 6549.6441 1.0269057e+10 0.16779818 0.054622640 103.68691 28.037950 6551.8093 9.4898001e+09 0.16627827 0.055519844 103.73600 27.935986 6553.9746 8.8165099e+09 0.16409723 0.054845138 103.78510 27.834017 6556.1399 8.2548129e+09 0.16214838 0.053992558 103.83420 27.732047 6558.3052 7.7058800e+09 0.16038214 0.052979263 103.89245 27.618850 6560.4704 7.1722892e+09 0.15797215 0.051850143 103.95193 27.504148 6562.6357 6.6508801e+09 0.15560890 0.050274994 104.00592 27.398169 6564.8010 6.2020977e+09 0.15328486 0.048408587 104.05501 27.299989 6566.9663 5.8303627e+09 0.15116532 0.046636270 104.10410 27.201809 6569.1315 5.4978463e+09 0.14897557 0.044860986 104.14986 27.100308 6571.2968 5.1874240e+09 0.14725224 0.044422209 104.19518 26.998352 6573.4621 4.8848314e+09 0.14491322 0.043286664 104.24137 26.896396 6575.6274 4.6181419e+09 0.14220969 0.041745263 104.29046 26.794440 6577.7926 4.3654608e+09 0.13932497 0.038975327 104.33955 26.692484 6579.9579 4.1261842e+09 0.13655414 0.036543889 104.38864 26.590520 6582.1232 3.9072805e+09 0.13418148 0.035260272 104.43773 26.488550 6584.2885 3.6989474e+09 0.13227007 0.034358374 104.48683 26.386581 6586.4537 3.5148481e+09 0.13062384 0.033165431 104.53592 26.288157 6588.6190 3.3433164e+09 0.12920884 0.033173209 104.58501 26.189978 6590.7843 3.1818661e+09 0.12711463 0.029603169 104.63302 26.090714 6592.9496 3.0375658e+09 0.12522115 0.027151211 104.67833 25.988758 6595.1148 2.8988498e+09 0.12300828 0.025635480 104.72364 25.886802 6597.2801 2.7741199e+09 0.12065872 0.025634335 104.77137 25.784846 6599.4454 2.6547878e+09 0.11932386 0.024956518 104.82046 25.682890 6601.6107 2.5398941e+09 0.11914370 0.027333276 104.86955 25.580942 6603.7759 2.4306736e+09 0.11779201 0.026203922 104.91491 25.482707 6605.9412 2.3258401e+09 0.11737369 0.027454643 104.96022 25.384514 6608.1065 2.2324842e+09 0.11506483 0.023729556 105.00554 25.285030 6610.2718 2.1428523e+09 0.11195520 0.024262638 105.05085 25.183074 6612.4370 2.0611377e+09 0.10983810 0.023994217 105.09617 25.081118 6614.6023 1.9791599e+09 0.10856650 0.023525526 105.14148 24.981786 6616.7676 1.9104135e+09 0.10681705 0.023402771 105.18680 24.883607 6618.9329 1.8432026e+09 0.10575256 0.024475213 105.23258 24.784659 6621.0981 1.7601451e+09 0.10466927 0.025056920 105.28780 24.669956 6623.2634 1.6777767e+09 0.10277226 0.024589414 105.34303 24.555254 6625.4287 1.5871644e+09 0.10126691 0.025909149 105.39139 24.451987 6627.5940 1.5073543e+09 0.099346267 0.025546246 105.43671 24.353794 6629.7592 1.4390595e+09 0.098267677 0.025971834 105.48186 24.255433 6631.9245 1.3747135e+09 0.096826335 0.026024677 105.52340 24.153477 6634.0898 1.3210898e+09 0.095597255 0.026333391 105.56493 24.051521 6636.2551 1.2694987e+09 0.094348810 0.026450705 105.60797 23.951063 6638.4203 1.2194706e+09 0.093489531 0.025653330 105.65328 23.852883 6640.5856 1.1705209e+09 0.093875926 0.025199003 105.69860 23.754702 6642.7509 1.1233811e+09 0.093753955 0.025182424 105.74391 23.656523 6644.9162 1.0804778e+09 0.092817135 0.025442622 105.78923 23.558343 6647.0814 1.0394897e+09 0.091637259 0.026480651 105.83511 23.458508 6649.2467 9.9424850e+08 0.090558108 0.027293623 105.88609 23.343807 6651.4120 9.4642431e+08 0.090222894 0.026799885 105.93706 23.229105 6653.5772 8.9920656e+08 0.089732425 0.027820384 105.98100 23.126724 6655.7425 8.5793339e+08 0.088110866 0.027917029 106.02254 23.028531 6657.9078 8.2226997e+08 0.086529460 0.029954129 106.06446 22.930340 6660.0731 7.8960439e+08 0.084995295 0.031692417 106.10977 22.832160 6662.2383 7.6268500e+08 0.083352695 0.032910544 106.15509 22.733980 6664.4036 7.3387324e+08 0.082112672 0.030729252 106.19870 22.634100 6666.5689 7.1335322e+08 0.081742036 0.027019452 106.24024 22.532144 6668.7342 6.9273182e+08 0.080356337 0.028120464 106.28178 22.430188 6670.8994 6.6345191e+08 0.080111178 0.026911933 106.33089 22.321416 6673.0647 6.3643631e+08 0.079549846 0.027556011 106.38187 22.210962 6675.2300 6.0308363e+08 0.077833143 0.030238882 106.42862 22.106002 6677.3953 5.8140599e+08 0.075973742 0.031796301 106.47016 22.007810 6679.5605 5.6521485e+08 0.075788780 0.029804563 106.51170 21.909617 6681.7258 5.4742421e+08 0.076700294 0.030214195 106.55739 21.801613 6683.8911 5.2570123e+08 0.077048806 0.032494488 106.60412 21.691159 6686.0564 5.0071041e+08 0.076582207 0.033793880 106.65022 21.586183 6688.2216 4.7709398e+08 0.074115273 0.033836353 106.69554 21.488003 6690.3869 4.5782330e+08 0.072452863 0.033071523 106.74085 21.389824 6692.5522 4.4334631e+08 0.071475981 0.032124102 106.78315 21.291644 6694.7175 4.3077584e+08 0.070715414 0.030255460 106.82469 21.193465 6696.8827 4.1812255e+08 0.070207855 0.030042546 106.86700 21.093445 6699.0480 4.0165042e+08 0.068896965 0.031546128 106.91374 20.982991 6701.2133 3.8761898e+08 0.067037286 0.031722402 106.96047 20.872537 6703.3786 3.7256463e+08 0.066853686 0.034622523 107.00306 20.771853 6705.5438 3.5813912e+08 0.066855978 0.037635441 107.04460 20.673674 6707.7091 3.4571700e+08 0.066406328 0.040085247 107.08691 20.573678 6709.8744 3.3062145e+08 0.065311483 0.040576390 107.13365 20.463207 6712.0397 3.1744266e+08 0.063091113 0.041903598 107.18038 20.352736 6714.2049 3.0498635e+08 0.060877325 0.047318816 107.22299 20.252026 6716.3702 2.9717695e+08 0.058914127 0.048946647 107.26453 20.153847 6718.5355 2.8640145e+08 0.056515203 0.050646393 107.30620 20.053875 6720.7008 2.7316314e+08 0.056219907 0.050338571 107.34869 19.943421 6722.8660 2.5702080e+08 0.055428231 0.049534560 107.39117 19.832967 6725.0313 2.4530860e+08 0.051172359 0.041556463 107.43702 19.722513 6727.1966 2.4103768e+08 0.049584525 0.040698480 107.48375 19.612060 6729.3619 2.3649586e+08 0.048956767 0.040804239 107.52820 19.506983 6731.5271 2.3417589e+08 0.047084542 0.042799117 107.56974 19.408804 6733.6924 2.2781372e+08 0.045900456 0.047683591 107.61128 19.310625 6735.8577 2.1911254e+08 0.047174905 0.050203925 107.65356 19.202749 6738.0230 2.0998603e+08 0.048450086 0.057447478 107.69604 19.092295 6740.1882 1.9749963e+08 0.048109795 0.064371923 107.74038 18.981834 6742.3535 1.8612362e+08 0.045455701 0.069472134 107.78712 18.871364 6744.5188 1.7828282e+08 0.041227281 0.078194675 107.83311 18.762218 6746.6841 1.7134762e+08 0.037595488 0.071034375 107.87088 18.667814 6748.8493 1.6808802e+08 0.036347548 0.071485251 107.90864 18.573411 6751.0146 1.6223304e+08 0.033396838 0.073717846 107.95029 18.472038 6753.1799 1.5795847e+08 0.030526870 0.073559409 107.99702 18.361584 6755.3452 1.5093241e+08 0.028463962 0.074454018 108.04341 18.251130 6757.5104 1.4766364e+08 0.026606023 0.075191044 108.08589 18.140675 6759.6757 1.4508828e+08 0.027412865 0.075983013 108.12838 18.030221 6761.8410 1.3789255e+08 0.030485200 0.078037706 108.17394 17.919767 6764.0063 1.3021940e+08 0.033922681 0.079483585 108.22068 17.809313 6766.1715 1.2461274e+08 0.035396935 0.080101742 108.26582 17.700441 6768.3368 1.1940322e+08 0.031877907 0.082067913 108.30830 17.594236 6770.5021 1.1631284e+08 0.027513629 0.088097453 108.35079 17.487951 6772.6673 1.1332906e+08 0.023649999 0.093349196 108.39327 17.377497 6774.8326 1.0725607e+08 0.019797001 0.098600938 108.43575 17.267043 6776.9979 1.0491521e+08 0.015986980 0.10385268 108.47824 17.159402 6779.1632 99492633. 0.012159295 0.10910442 108.52073 17.053181 6781.3284 92025973. 0.0083179519 0.11435617 108.56322 16.945643 6783.4937 89682849. 0.0045080653 0.11960791 108.60570 16.835188 6785.6590 88184745. 0.00069480554 0.12485965 108.64818 16.724733 6787.8243 87842532. -0.0031261390 0.13011139 108.69066 16.618346 6789.9895 86204433. -0.0069851787 0.13536314 108.73314 16.512140 6792.1548 76897800. -0.010960325 0.14061488 108.77563 16.403372 6794.3201 75194961. -0.014916694 0.14586662 108.81811 16.292918 6796.4854 71115391. -0.018995896 0.15111837 108.86059 16.183523 6798.6506 70134563. -0.023164169 0.15637011 108.90307 16.077318 6800.8159 68928603. -0.027562868 0.16162185 108.94555 15.971113 6802.9812 61217660. -0.032694055 0.16687359 108.98804 15.861103 6805.1465 57452109. -0.039561366 0.17212534 109.03052 15.750648 6807.3117 51818937. -0.061200235 0.17737708 109.07300 15.642494 6809.4770 49770700. -0.051785229 0.18262882 109.11549 15.536289 6811.6423 50925376. -0.024835860 0.18788057 109.15911 15.426327