# # 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 = 54.007303 km # Date (UTC) = 2015-01-29T10:22:03.596 # Date (julian) = 2457051.93198606 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.7668 6.2774986e+10 0.035849220 0.031609798 -25.503747 62.045229 6500.1065 5.6306908e+10 0.044232700 0.032315337 -25.824359 61.867645 6502.4463 5.1198831e+10 0.052909757 0.033020875 -26.132868 61.684009 6504.7860 4.7122507e+10 0.062038565 0.033726413 -26.435391 61.506357 6507.1257 4.3388121e+10 0.071619620 0.034431951 -26.736523 61.326755 6509.4654 3.9817969e+10 0.081673807 0.035137489 -27.037622 61.143157 6511.8052 3.6544810e+10 0.092288598 0.035843028 -27.338785 60.959521 6514.1449 3.3568597e+10 0.10349572 0.036548566 -27.629219 60.775885 6516.4846 3.0871933e+10 0.11534052 0.037254104 -27.915667 60.592264 6518.8243 2.8206444e+10 0.12769040 0.037959642 -28.202017 60.408671 6521.1641 2.5666039e+10 0.14056504 0.038665180 -28.481147 60.225035 6523.5038 2.3231632e+10 0.14959077 0.039303979 -28.755530 60.041398 6525.8435 2.1157389e+10 0.15582439 0.039685945 -29.014424 59.866470 6528.1833 1.9448268e+10 0.16269631 0.041587859 -29.240899 59.713446 6530.5230 1.7908753e+10 0.16803203 0.044560859 -29.492037 59.535752 6532.8627 1.6370482e+10 0.17286237 0.047404892 -29.756430 59.346926 6535.2024 1.4855571e+10 0.17529746 0.048136482 -30.020866 59.163289 6537.5422 1.3533227e+10 0.17657662 0.048940829 -30.238732 59.008050 6539.8819 1.2413564e+10 0.17711227 0.050711126 -30.465543 58.843883 6542.2216 1.1417057e+10 0.17492700 0.051086373 -30.722574 58.652944 6544.5613 1.0394967e+10 0.17278800 0.052099714 -30.965966 58.461967 6546.9011 9.5278334e+09 0.17050175 0.053205955 -31.188794 58.289158 6549.2408 8.7969825e+09 0.16797486 0.054211662 -31.396907 58.130011 6551.5805 8.1226528e+09 0.16621916 0.055439520 -31.630266 57.947916 6553.9202 7.5470901e+09 0.16380997 0.054872474 -31.846288 57.778379 6556.2600 6.9528998e+09 0.16158158 0.053974906 -32.048281 57.619234 6558.5997 6.4151472e+09 0.15931136 0.052728293 -32.274445 57.430142 6560.9394 5.9886684e+09 0.15628258 0.051427303 -32.483656 57.257653 6563.2791 5.5669216e+09 0.15381891 0.049605461 -32.679527 57.098509 6565.6189 5.2087083e+09 0.15127328 0.047615662 -32.898584 56.909229 6567.9586 4.8748011e+09 0.14941456 0.045806670 -33.101034 56.736876 6570.2983 4.5512086e+09 0.14771700 0.044793934 -33.290782 56.577730 6572.6380 4.3157958e+09 0.14556185 0.043864762 -33.468852 56.412792 6574.9778 4.0810391e+09 0.14310877 0.042385383 -33.659937 56.239387 6577.3175 3.8371465e+09 0.14019556 0.039721656 -33.880301 56.048406 6579.6572 3.5828303e+09 0.13711853 0.036709191 -34.053843 55.887859 6581.9970 3.3625898e+09 0.13427919 0.035294718 -34.227202 55.726740 6584.3367 3.1873858e+09 0.13126080 0.034332110 -34.404711 55.561474 6586.6764 3.0022145e+09 0.12842015 0.033162552 -34.601579 55.378533 6589.0161 2.8288951e+09 0.12543036 0.033013975 -34.794014 55.197988 6591.3559 2.6499735e+09 0.12197828 0.028800367 -34.959278 55.038844 6593.6956 2.5058523e+09 0.11886727 0.026455540 -35.124544 54.875456 6596.0353 2.3917802e+09 0.11550113 0.025727113 -35.289810 54.710553 6598.3750 2.2808077e+09 0.11350363 0.025228111 -35.455077 54.551406 6600.7148 2.1600179e+09 0.11323437 0.026459291 -35.631290 54.375582 6603.0545 2.0166190e+09 0.11254994 0.026631018 -35.820227 54.179379 6605.3942 1.8853995e+09 0.11205446 0.026995756 -35.979371 54.014113 6607.7339 1.7719872e+09 0.11036227 0.024257742 -36.138503 53.851496 6610.0737 1.6861368e+09 0.10726354 0.024073364 -36.297618 53.692383 6612.4134 1.6107278e+09 0.10502552 0.024011882 -36.451882 53.528369 6614.7531 1.5305181e+09 0.10388809 0.023421624 -36.603910 53.364099 6617.0928 1.4572807e+09 0.10238915 0.023470031 -36.750812 53.204955 6619.4326 1.3758326e+09 0.10170048 0.024630286 -36.900952 53.042572 6621.7723 1.2957347e+09 0.10059645 0.024833466 -37.053977 52.877306 6624.1120 1.2192517e+09 0.098601959 0.024922274 -37.201522 52.712039 6626.4517 1.1514450e+09 0.096997338 0.026015336 -37.348426 52.546772 6628.7915 1.0982476e+09 0.095217799 0.026024441 -37.495328 52.381506 6631.1312 1.0359839e+09 0.093269361 0.025944093 -37.638370 52.216260 6633.4709 9.7970460e+08 0.091597419 0.026234472 -37.779124 52.051027 6635.8107 9.2978622e+08 0.089679980 0.026521357 -37.919905 51.891845 6638.1504 8.8507101e+08 0.088202304 0.025665091 -38.060688 51.730496 6640.4901 8.4847475e+08 0.087826929 0.025210687 -38.201474 51.565228 6642.8298 8.1069586e+08 0.087261107 0.025185655 -38.337810 51.399962 6645.1696 7.7620704e+08 0.086012343 0.025531115 -38.472470 51.234695 6647.5093 7.4259079e+08 0.084856129 0.026705919 -38.607132 51.069429 6649.8490 7.1507141e+08 0.084150914 0.026463373 -38.741794 50.904163 6652.1887 6.8573906e+08 0.083818082 0.027302449 -38.876456 50.738896 6654.5285 6.5760221e+08 0.083084706 0.027811097 -39.006045 50.573657 6656.8682 6.3054442e+08 0.081247340 0.028785419 -39.135733 50.408417 6659.2079 6.0138084e+08 0.079773592 0.031791228 -39.270395 50.243151 6661.5476 5.7556966e+08 0.078443764 0.032813873 -39.398233 50.077885 6663.8874 5.5054480e+08 0.077050715 0.032237303 -39.520652 49.912620 6666.2271 5.2219204e+08 0.077148707 0.026952846 -39.648726 49.747354 6668.5668 4.9287857e+08 0.076190500 0.027972366 -39.775493 49.582088 6670.9065 4.6764966e+08 0.076046503 0.026908646 -39.897910 49.416821 6673.2463 4.4018530e+08 0.075627245 0.027827529 -40.020329 49.251555 6675.5860 4.2036869e+08 0.073520046 0.030920750 -40.142748 49.086289 6677.9257 4.0153479e+08 0.071993174 0.031042211 -40.265144 48.921056 6680.2654 3.8080165e+08 0.072155992 0.029498737 -40.387548 48.755810 6682.6052 3.6126837e+08 0.072780695 0.030886917 -40.509968 48.590543 6684.9449 3.3871519e+08 0.072653616 0.032702041 -40.627768 48.425277 6687.2846 3.2115806e+08 0.070564300 0.034184163 -40.744065 48.260011 6689.6243 3.0778940e+08 0.067776424 0.033454009 -40.860364 48.094743 6691.9641 2.9608951e+08 0.066372806 0.032773805 -40.976663 47.929477 6694.3038 2.8597796e+08 0.065154698 0.030835232 -41.092962 47.764213 6696.6435 2.7416537e+08 0.064605744 0.029943158 -41.204037 47.598947 6698.9833 2.5903283e+08 0.063168367 0.031567446 -41.315554 47.433688 6701.3230 2.4289287e+08 0.061216390 0.031883349 -41.431829 47.268455 6703.6627 2.3060723e+08 0.061071421 0.035333536 -41.535311 47.117033 6706.0024 2.2527501e+08 0.060907483 0.038450637 -41.629747 46.975380 6708.3422 2.1883673e+08 0.060263280 0.040416176 -41.734882 46.817678 6710.6819 2.0988493e+08 0.058492042 0.040629965 -41.844779 46.652410 6713.0216 1.9449427e+08 0.056143684 0.043764784 -41.948834 46.487144 6715.3613 1.8376430e+08 0.053744855 0.047748153 -42.055413 46.321877 6717.7011 1.7906882e+08 0.051257313 0.049830904 -42.165591 46.156611 6720.0408 1.7483427e+08 0.049637738 0.050415040 -42.271004 45.991345 6722.3805 1.7289397e+08 0.049163146 0.050134789 -42.375061 45.825193 6724.7202 1.6475027e+08 0.045114074 0.043912194 -42.479116 45.653806 6727.0600 1.5582865e+08 0.042410037 0.040880494 -42.583162 45.485564 6729.3997 1.4781635e+08 0.041473334 0.040779022 -42.687199 45.320331 6731.7394 1.4001160e+08 0.039197515 0.043221604 -42.785885 45.155069 6734.0791 1.3435481e+08 0.037782969 0.049348838 -42.885309 44.989802 6736.4189 1.2896981e+08 0.039356281 0.051938570 -42.989365 44.824534 6738.7586 1.2553263e+08 0.040151165 0.061497513 -43.081162 44.673661 6741.0983 1.2448600e+08 0.038864483 0.066039112 -43.165104 44.532011 6743.4380 1.2043700e+08 0.034351495 0.074002503 -43.258890 44.373748 6745.7778 1.1739294e+08 0.031930208 0.078893856 -43.356825 44.208481 6748.1175 1.1029067e+08 0.027462412 0.067635074 -43.454760 44.043215 6750.4572 1.0781550e+08 0.024671089 0.072784864 -43.552696 43.877949 6752.7970 1.0316700e+08 0.021760610 0.073212253 -43.650631 43.712682 6755.1367 99693424. 0.019833990 0.074545421 -43.743643 43.547442 6757.4764 98895893. 0.017898452 0.075294295 -43.835443 43.382202 6759.8161 94285244. 0.018713188 0.076016900 -43.927259 43.216935 6762.1559 88392899. 0.022381789 0.077799435 -44.019073 43.051669 6764.4956 80115962. 0.024987795 0.079507028 -44.110886 42.886403 6766.8353 75269695. 0.025218778 0.081603231 -44.202701 42.721136 6769.1750 73852004. 0.020260811 0.084878797 -44.294516 42.554236 6771.5148 74831610. 0.016287835 0.090553661 -44.386329 42.382850 6773.8545 70887093. 0.011648021 0.096228525 -44.478144 42.215339 6776.1942 69515198. 0.0072022317 0.10190339 -44.569948 42.050073 6778.5339 66738475. 0.0023852994 0.10757825 -44.655638 41.884838 6780.8737 65732125. -0.0024148132 0.11325312 -44.743559 41.719592 6783.2134 63846487. -0.0077247149 0.11892798 -44.835374 41.554325 6785.5531 59854337. -0.014132986 0.12460285 -44.922709 41.389061 6787.8928 58586865. -0.021020286 0.13027771 -45.008403 41.223797 6790.2326 53646969. -0.031405810 0.13595258 -45.094096 41.058530 6792.5723 50778964. -0.047495307 0.14162744 -45.179789 40.893264 6794.9120 50217695. -0.11444405 0.14730230 -45.265482 40.727998 6797.2517 47762844. -0.069823720 0.15297717 -45.346092 40.562731 6799.5915 47186962. 0.044357612 0.15865203 -45.426867 40.397471