# # 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 = 51.534141 km # Date (UTC) = 2016-01-31T09:18:41.537 # Date (julian) = 2457418.88798075 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.2671 7.4589686e+10 0.054978200 0.032966860 110.15193 52.693834 6504.4671 6.6340526e+10 0.064408809 0.033630241 110.34948 52.465605 6506.6670 5.8827729e+10 0.074034557 0.034293622 110.53333 52.251121 6508.8669 5.2411512e+10 0.083991838 0.034957002 110.69829 52.057739 6511.0668 4.7457003e+10 0.094455357 0.035620383 110.85714 51.864354 6513.2668 4.2648352e+10 0.10515567 0.036283764 111.04246 51.638752 6515.4667 3.8300852e+10 0.11617990 0.036947145 111.22080 51.418128 6517.6666 3.4315536e+10 0.12750009 0.037610526 111.37965 51.218256 6519.8665 3.1152525e+10 0.13932018 0.038273907 111.53850 51.024873 6522.0664 2.8645171e+10 0.15146332 0.038934651 111.69309 50.831518 6524.2664 2.6520334e+10 0.15804538 0.039521589 111.84501 50.637035 6526.4663 2.4611405e+10 0.16373234 0.040156940 111.99695 50.436747 6528.6662 2.2746655e+10 0.16876833 0.041970993 112.14395 50.241406 6530.8661 2.0845436e+10 0.17263543 0.045041275 112.28897 50.048033 6533.0661 1.8985456e+10 0.17673806 0.047547661 112.43398 49.854697 6535.2660 1.7264019e+10 0.17817838 0.048108914 112.57901 49.655655 6537.4659 1.5650340e+10 0.17888741 0.048904881 112.72404 49.457939 6539.6658 1.4141342e+10 0.17881038 0.050449598 112.86908 49.264556 6541.8658 1.2800853e+10 0.17674188 0.051045773 113.00773 49.064785 6544.0657 1.1635425e+10 0.17411517 0.051697625 113.14585 48.867810 6546.2656 1.0608776e+10 0.17156154 0.052683071 113.28395 48.674472 6548.4655 9.6808063e+09 0.16953879 0.053806667 113.42208 48.481090 6550.6654 8.8417608e+09 0.16752229 0.055151981 113.56021 48.283696 6552.8654 8.0906053e+09 0.16577264 0.055368954 113.69742 48.084329 6555.0653 7.4180333e+09 0.16368703 0.054798505 113.82862 47.890992 6557.2652 6.7320545e+09 0.16131294 0.053699871 113.95983 47.692895 6559.4651 6.1624219e+09 0.15860071 0.052334681 114.08587 47.501867 6561.6651 5.7268304e+09 0.15570996 0.051044955 114.19522 47.340719 6563.8650 5.4093153e+09 0.15247260 0.048927782 114.31205 47.160037 6566.0649 5.1587814e+09 0.14968494 0.047146168 114.43672 46.960104 6568.2648 4.8337500e+09 0.14773447 0.045528223 114.56791 46.766765 6570.4648 4.4932177e+09 0.14581963 0.044724994 114.69496 46.569236 6572.6647 4.1788198e+09 0.14365560 0.043849514 114.81606 46.374125 6574.8646 3.9200952e+09 0.14100124 0.042439742 114.91966 46.207223 6577.0645 3.7031144e+09 0.13790296 0.040119028 115.02902 46.029265 6579.2644 3.4937643e+09 0.13427997 0.036925122 115.14643 45.835882 6581.4644 3.2787450e+09 0.13118521 0.035455993 115.27051 45.635848 6583.6643 3.0859278e+09 0.12814260 0.034685434 115.38101 45.455987 6585.8642 2.9229036e+09 0.12485256 0.033279857 115.47885 45.294839 6588.0641 2.7698108e+09 0.12199951 0.033358513 115.59203 45.103013 6590.2641 2.6197533e+09 0.11859692 0.030570882 115.70286 44.915872 6592.4640 2.4706233e+09 0.11542437 0.027622861 115.80070 44.754724 6594.6639 2.3290533e+09 0.11276008 0.025808073 115.90610 44.570185 6596.8638 2.2062340e+09 0.11020904 0.025723346 116.01382 44.375813 6599.0637 2.0948814e+09 0.10843455 0.024933564 116.10591 44.214665 6601.2637 1.9833689e+09 0.10855268 0.027169864 116.20844 44.037369 6603.4636 1.8832251e+09 0.10744210 0.026388827 116.32585 43.837081 6605.6635 1.7875780e+09 0.10697069 0.027221681 116.41883 43.668999 6607.8634 1.7025192e+09 0.10502586 0.024002027 116.50960 43.503411 6610.0634 1.6320570e+09 0.10199556 0.024063520 116.59591 43.342295 6612.2633 1.5492924e+09 0.099816462 0.024124035 116.69406 43.162015 6614.4632 1.4705994e+09 0.098789826 0.023621360 116.80357 42.963344 6616.6631 1.3974678e+09 0.097319534 0.023386377 116.88989 42.802196 6618.8631 1.3238548e+09 0.096606422 0.024422504 116.98356 42.629160 6621.0630 1.2565112e+09 0.095748908 0.025068573 117.09407 42.428872 6623.2629 1.1844526e+09 0.094174002 0.024589226 117.18389 42.262082 6625.4628 1.1210961e+09 0.092761655 0.025949890 117.27021 42.100257 6627.6627 1.0728511e+09 0.090691070 0.025572819 117.35653 41.933390 6629.8627 1.0220428e+09 0.089256946 0.025953132 117.44679 41.756435 6632.0626 9.6855852e+08 0.087331295 0.026039851 117.54348 41.563050 6634.2625 9.1523220e+08 0.085707428 0.026345992 117.63050 41.394361 6636.4624 8.6798963e+08 0.083991030 0.026370170 117.71571 41.228581 6638.6624 8.3072154e+08 0.082643482 0.025642785 117.79628 41.067436 6640.8623 8.0194223e+08 0.082902280 0.025165150 117.87685 40.903656 6643.0622 7.6822585e+08 0.082554822 0.025202011 117.95743 40.736753 6645.2621 7.2712695e+08 0.081765984 0.025574482 118.05456 40.545852 6647.4621 6.8513355e+08 0.080954079 0.026681052 118.15032 40.356230 6649.6620 6.4684957e+08 0.080314712 0.026721189 118.22514 40.195082 6651.8619 6.1599062e+08 0.080027905 0.027144685 118.30303 40.030862 6654.0618 5.8919768e+08 0.079497862 0.028009890 118.38361 39.863963 6656.2617 5.6742087e+08 0.077772428 0.028253148 118.46418 39.701644 6658.4617 5.3675474e+08 0.076427749 0.030879852 118.54529 39.538599 6660.6616 5.0600489e+08 0.075186038 0.032227350 118.63506 39.345262 6662.8615 4.8003206e+08 0.074040201 0.032560913 118.71921 39.168069 6665.0614 4.5391859e+08 0.073503400 0.028446468 118.79978 39.001166 6667.2614 4.3649891e+08 0.073042795 0.027199459 118.87533 38.839290 6669.4613 4.1668996e+08 0.072095148 0.027881936 118.95015 38.677364 6671.6612 3.9542869e+08 0.072083915 0.026874771 119.02497 38.510462 6673.8611 3.7857796e+08 0.071363770 0.028747094 119.09978 38.345851 6676.0610 3.6457552e+08 0.069064708 0.031753070 119.17460 38.184706 6678.2610 3.4672372e+08 0.068095389 0.030762065 119.24942 38.019758 6680.4609 3.3267061e+08 0.068529077 0.029540943 119.32424 37.852856 6682.6608 3.1911768e+08 0.069182515 0.030929432 119.39373 37.691296 6684.8607 3.0514429e+08 0.069100743 0.032697771 119.46661 37.522932 6687.0607 2.9410266e+08 0.067410742 0.034309068 119.55640 37.322639 6689.2606 2.7959181e+08 0.064821392 0.033781455 119.63091 37.151206 6691.4605 2.6873794e+08 0.064022068 0.032892613 119.70000 36.990060 6693.6604 2.5944039e+08 0.063279857 0.031377520 119.77479 36.828912 6695.8604 2.5258139e+08 0.063216797 0.029701437 119.84810 36.666256 6698.0603 2.4416139e+08 0.062610180 0.030300555 119.91716 36.499354 6700.2602 2.3720378e+08 0.061098979 0.030860716 119.98622 36.335472 6702.4601 2.2848106e+08 0.060092945 0.033244140 120.05529 36.174326 6704.6600 2.1801391e+08 0.060596404 0.036501671 120.12434 36.013206 6706.8600 2.1509896e+08 0.060425377 0.039943113 120.19311 35.851808 6709.0599 2.1109746e+08 0.059936652 0.041094449 120.25642 35.684905 6711.2598 2.0768482e+08 0.058225928 0.040987830 120.32152 35.519795 6713.4597 2.0232793e+08 0.056226462 0.045349396 120.39058 35.358649 6715.6597 1.9391930e+08 0.054471265 0.048053270 120.45964 35.197503 6717.8596 1.8398666e+08 0.052525539 0.049821099 120.52871 35.036355 6720.0595 1.7171173e+08 0.051501674 0.050412872 120.60355 34.848244 6722.2594 1.5871962e+08 0.051562952 0.050284482 120.67683 34.665164 6724.4594 1.4698914e+08 0.048671505 0.046090779 120.74588 34.498295 6726.6593 1.3927472e+08 0.045919821 0.040957313 120.81119 34.335150 6728.8592 1.3357855e+08 0.045601746 0.040845864 120.87450 34.174004 6731.0591 1.2533601e+08 0.043956622 0.041867686 120.93780 34.012859 6733.2590 1.2089949e+08 0.042834905 0.045330728 121.00111 33.851713 6735.4590 1.1316325e+08 0.043639193 0.049780659 121.06442 33.690563 6737.6589 1.0449098e+08 0.045333294 0.056234473 121.12773 33.526896 6739.8588 99296144. 0.045567365 0.063877574 121.19104 33.359996 6742.0587 90626017. 0.043634075 0.068753869 121.25434 33.197125 6744.2587 89746959. 0.039192032 0.077993477 121.31765 33.035977 6746.4586 86901145. 0.036633574 0.073655766 121.38095 32.874862 6748.6585 81948629. 0.034728579 0.070481309 121.44295 32.713742 6750.8584 79884392. 0.032077498 0.073469928 121.50050 32.552596 6753.0583 75461910. 0.029507092 0.073166118 121.56086 32.391449 6755.2583 75737004. 0.027656809 0.074492110 121.62417 32.230302 6757.4582 72636466. 0.025898271 0.075349557 121.69179 32.044980 6759.6581 73197756. 0.026894471 0.075978769 121.75912 31.861332 6761.8580 72275984. 0.030213538 0.078039116 121.82243 31.700185 6764.0580 67786422. 0.033886287 0.079486062 121.88248 31.539057 6766.2579 66592459. 0.035419982 0.080297091 121.94002 31.377943 6768.4578 57356117. 0.032022043 0.082503331 121.99757 31.212045 6770.6577 59660766. 0.027715015 0.088474990 122.05564 31.045656 6772.8577 59506331. 0.023861389 0.093810771 122.11895 30.884510 6775.0576 58066431. 0.020042161 0.099146551 122.18023 30.723364 6777.2575 60329875. 0.016136432 0.10448233 122.23778 30.562217 6779.4574 56152162. 0.012392112 0.10981811 122.29533 30.401070 6781.6573 54494978. 0.0086055149 0.11515389 122.35289 30.239922 6783.8573 52934852. 0.0048265278 0.12048967 122.41446 30.050565 6786.0572 52095724. 0.0010548424 0.12582545 122.47464 29.871010 6788.2571 50352128. -0.0026349075 0.13116123 122.53219 29.709863 6790.4570 46721321. -0.0061260194 0.13649701 122.58975 29.552691 6792.6570 41919798. -0.0095785359 0.14183279 122.64730 29.397300 6794.8569 38710748. -0.011782930 0.14716857 122.70485 29.236425 6797.0568 39751485. -0.017079904 0.15250435 122.76116 29.075279 6799.2567 41188403. -0.023670158 0.15784013 122.81296 28.914132