# # 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 = 53.188315 km # Date (UTC) = 2012-01-10T10:43:35.198 # Date (julian) = 2455936.94693516 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.8448 2.2623279e+11 0.052796196 0.032537958 90.005159 42.284032 6503.5175 1.7964199e+11 0.063866699 0.033343901 90.114324 42.132799 6506.1902 1.3912626e+11 0.074921499 0.034149844 90.228193 41.970987 6508.8629 1.0775305e+11 0.085978381 0.034955787 90.330552 41.829771 6511.5356 8.5109735e+10 0.097192968 0.035761730 90.430185 41.693434 6514.2083 7.0014846e+10 0.10890198 0.036567673 90.525090 41.552369 6516.8810 5.8834812e+10 0.12113395 0.037373617 90.619479 41.410787 6519.5536 5.0021041e+10 0.13388493 0.038179560 90.719078 41.269205 6522.2263 4.2865034e+10 0.14654056 0.038976521 90.818249 41.127622 6524.8990 3.7131143e+10 0.15355589 0.039746345 90.912637 40.986040 6527.5717 3.2523551e+10 0.15853566 0.041131549 91.007025 40.844458 6530.2444 2.8784803e+10 0.16322493 0.044170873 91.101413 40.702876 6532.9171 2.5753218e+10 0.16714057 0.047450339 91.195801 40.562727 6535.5898 2.3182796e+10 0.16870198 0.047968444 91.290189 40.426390 6538.2625 2.0743590e+10 0.17085431 0.049284500 91.389518 40.280721 6540.9352 1.8447094e+10 0.17156025 0.051295907 91.497393 40.118909 6543.6079 1.6344843e+10 0.17137195 0.051541433 91.592198 39.971212 6546.2806 1.4568740e+10 0.17011808 0.052695388 91.681341 39.829630 6548.9533 1.3164452e+10 0.16804203 0.053952322 91.770497 39.688031 6551.6260 1.1978457e+10 0.16577495 0.055455470 91.859658 39.546428 6554.2986 1.0940320e+10 0.16256137 0.054838647 91.948803 39.404844 6556.9713 1.0009430e+10 0.15988279 0.053870321 92.037947 39.263261 6559.6440 9.1807782e+09 0.15671617 0.052314489 92.127090 39.126803 6562.3167 8.4449754e+09 0.15344075 0.050578534 92.216233 38.990099 6564.9894 7.7950817e+09 0.15058124 0.048323196 92.305376 38.848517 6567.6621 7.2107335e+09 0.14808899 0.046057363 92.394520 38.706935 6570.3348 6.6881498e+09 0.14620577 0.044778826 92.483667 38.565353 6573.0075 6.2155200e+09 0.14407287 0.043651474 92.571471 38.423771 6575.6802 5.7838777e+09 0.14139831 0.041692275 92.655370 38.282188 6578.3529 5.3863091e+09 0.13848817 0.038092390 92.741098 38.142436 6581.0256 5.0279512e+09 0.13536621 0.035588868 92.830241 38.006099 6583.6983 4.6989579e+09 0.13288174 0.034668241 92.917068 37.867444 6586.3709 4.3967784e+09 0.13021100 0.033166501 93.000971 37.725862 6589.0436 4.1130688e+09 0.12765877 0.032959402 93.084871 37.584280 6591.7163 3.8450550e+09 0.12438286 0.028393614 93.168769 37.442698 6594.3890 3.6028505e+09 0.12097332 0.025958969 93.252678 37.304396 6597.0617 3.3734004e+09 0.11721452 0.025703252 93.336592 37.168038 6599.7344 3.1639867e+09 0.11485475 0.024973901 93.416717 37.027913 6602.4071 2.9718582e+09 0.11322307 0.027169232 93.495374 36.886331 6605.0798 2.7896325e+09 0.11104097 0.026731981 93.578298 36.744749 6607.7525 2.6261126e+09 0.10796643 0.024221125 93.662196 36.603167 6610.4252 2.4665358e+09 0.10364033 0.024409223 93.741341 36.466342 6613.0979 2.3156194e+09 0.10167278 0.023609498 93.819998 36.329985 6615.7706 2.1723010e+09 0.10024135 0.023275240 93.898656 36.188422 6618.4433 2.0351130e+09 0.099794404 0.024105503 93.977313 36.046841 6621.1159 1.9118260e+09 0.099185570 0.025051017 94.055970 35.905258 6623.7886 1.7986185e+09 0.097492363 0.024784002 94.134627 35.764651 6626.4613 1.6941932e+09 0.096070230 0.026003131 94.213280 35.628312 6629.1340 1.5960456e+09 0.094627775 0.026084874 94.291935 35.490510 6631.8067 1.5043270e+09 0.092854991 0.026012711 94.370592 35.348928 6634.4794 1.4161095e+09 0.091342131 0.026361813 94.449249 35.209297 6637.1521 1.3386186e+09 0.089734710 0.026086921 94.527907 35.072960 6639.8248 1.2725430e+09 0.089221507 0.025333277 94.604131 34.934174 6642.4975 1.2050912e+09 0.089236188 0.025172054 94.677555 34.792570 6645.1702 1.1348382e+09 0.088024982 0.025531403 94.760173 34.643034 6647.8429 1.0604345e+09 0.086668782 0.026881551 94.850069 34.487217 6650.5156 9.8880885e+08 0.085702125 0.026373262 94.925302 34.344062 6653.1882 9.3185486e+08 0.084986742 0.027621773 94.998715 34.202480 6655.8609 8.8044992e+08 0.082872757 0.027965957 95.072127 34.060898 6658.5336 8.3243273e+08 0.080731022 0.031007483 95.145539 33.919712 6661.2063 7.8998337e+08 0.078727953 0.032640034 95.218952 33.783373 6663.8790 7.4923880e+08 0.076762879 0.032239616 95.292364 33.647034 6666.5517 7.1042993e+08 0.076416275 0.027016102 95.365777 33.510696 6669.2244 6.7310350e+08 0.075038713 0.028125230 95.439190 33.372987 6671.8971 6.3710836e+08 0.075076134 0.026878133 95.512602 33.231405 6674.5698 6.0397875e+08 0.074045787 0.029435440 95.584157 33.091682 6677.2425 5.7336642e+08 0.071819286 0.032013516 95.652329 32.955345 6679.9152 5.4789748e+08 0.072035061 0.029511519 95.722845 32.816661 6682.5879 5.2486494e+08 0.073072460 0.030873689 95.796257 32.675080 6685.2606 5.0355585e+08 0.073030750 0.032980043 95.866836 32.536330 6687.9332 4.7905323e+08 0.070636648 0.033822422 95.935004 32.399990 6690.6059 4.5191818e+08 0.068538909 0.033046423 96.013137 32.247520 6693.2786 4.2470013e+08 0.067542282 0.031508503 96.097038 32.085711 6695.9513 4.0020316e+08 0.067114127 0.029684728 96.165775 31.948453 6698.6240 3.8187150e+08 0.065878557 0.031074342 96.233956 31.812095 6701.2967 3.6281010e+08 0.063716192 0.031844792 96.302123 31.675757 6703.9694 3.4429111e+08 0.063634457 0.036100967 96.370291 31.539419 6706.6421 3.2748356e+08 0.063470900 0.039563904 96.438458 31.403081 6709.3148 3.1360124e+08 0.062575563 0.040932329 96.506627 31.265464 6711.9875 3.0088028e+08 0.060053220 0.041815703 96.574799 31.123882 6714.6602 2.8706804e+08 0.057502613 0.047353039 96.646251 30.977504 6717.3329 2.7092951e+08 0.054967535 0.049853680 96.724158 30.821686 6720.0055 2.5562994e+08 0.053160092 0.050419124 96.792054 30.678886 6722.6782 2.4323490e+08 0.052567653 0.049766726 96.854980 30.542548 6725.3509 2.3114021e+08 0.047775413 0.041356811 96.921897 30.402218 6728.0236 2.2110444e+08 0.046442999 0.039661579 96.990064 30.260636 6730.6963 2.0884085e+08 0.044610614 0.041333634 97.061435 30.106893 6733.3690 1.9778959e+08 0.043016853 0.045927746 97.132657 29.954690 6736.0417 1.8819944e+08 0.044248718 0.050512646 97.200825 29.818352 6738.7144 1.7810567e+08 0.045480276 0.061254135 97.267533 29.682013 6741.3871 1.7295930e+08 0.043899021 0.066862670 97.330459 29.545675 6744.0598 1.6468820e+08 0.038455689 0.077839645 97.396725 29.402099 6746.7325 1.5762937e+08 0.034315168 0.070471548 97.468638 29.246281 6749.4052 1.5191970e+08 0.032245244 0.072167001 97.534234 29.104158 6752.0778 1.4570511e+08 0.027921449 0.074044390 97.597161 28.967820 6754.7505 1.4193496e+08 0.026194685 0.075006506 97.667244 28.815975 6757.4232 1.3640476e+08 0.023569904 0.075455656 97.738017 28.661969 6760.0959 1.3172590e+08 0.024527991 0.076244197 97.800939 28.520387 6762.7686 1.2577142e+08 0.029294514 0.076811003 97.865844 28.375669 6765.4413 1.1828266e+08 0.032155543 0.079611756 97.937762 28.219850 6768.1140 1.0813350e+08 0.029297449 0.081266229 98.004722 28.074768 6770.7867 97882696. 0.023650270 0.088787778 98.067654 27.938410 6773.4594 90499444. 0.018692879 0.095270231 98.136381 27.789500 6776.1321 85225804. 0.013806337 0.10175268 98.208299 27.633682 6778.8048 82413537. 0.0090218963 0.10823514 98.266317 27.496885 6781.4775 81134273. 0.0042990675 0.11471759 98.324986 27.359197 6784.1502 79431278. -0.00044971022 0.12120004 98.396904 27.203377 6786.8228 79701748. -0.0051152208 0.12768250 98.463118 27.055365 6789.4955 75952933. -0.010006236 0.13416495 98.520799 26.919027 6792.1682 70058593. -0.015113989 0.14064740 98.582550 26.776030 6794.8409 66817676. -0.020229489 0.14712986 98.648474 26.626205 6797.5136 63140036. -0.025662441 0.15361231 98.719339 26.471435 6800.1863 60350368. -0.031494445 0.16009476 98.790315 26.315617 6802.8590 57135341. -0.038299602 0.16657722 98.856238 26.159799 6805.5317 53735383. -0.047990467 0.17305967 98.918141 26.013484 6808.2044 52817374. -0.079463048 0.17954212 98.975823 25.877145 6810.8771 54379868. -0.061131746 0.18602457 99.038292 25.729491 6813.5498 53782509. -0.019670673 0.19250703 99.104216 25.573673