# # 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 = 50.557884 km # Date (UTC) = 2016-01-19T09:45:21.080 # Date (julian) = 2457406.90649398 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.2743 6.0733181e+10 0.069959094 0.033873657 108.44842 40.479667 6507.7268 5.4935744e+10 0.081200814 0.034613203 108.54190 40.325687 6510.1793 4.9363908e+10 0.092640445 0.035352750 108.63331 40.171708 6512.6318 4.4348041e+10 0.10435306 0.036092297 108.72130 40.017728 6515.0843 3.9766449e+10 0.11633639 0.036831844 108.81237 39.863748 6517.5368 3.5683727e+10 0.12863103 0.037571390 108.90586 39.709766 6519.9893 3.2112367e+10 0.14128018 0.038310937 108.99526 39.555786 6522.4418 2.8914971e+10 0.15303780 0.039032950 109.08325 39.401807 6524.8943 2.6115905e+10 0.16009386 0.039744678 109.17124 39.247828 6527.3468 2.3601890e+10 0.16509617 0.040968283 109.25923 39.093849 6529.7993 2.1306107e+10 0.16951743 0.043509078 109.34722 38.939869 6532.2519 1.9267305e+10 0.17308047 0.046894590 109.43521 38.785889 6534.7044 1.7447079e+10 0.17493937 0.048141595 109.52320 38.631908 6537.1569 1.5789460e+10 0.17581948 0.048759183 109.61118 38.477927 6539.6094 1.4320799e+10 0.17643938 0.050381260 109.69918 38.323948 6542.0619 1.3095717e+10 0.17552345 0.051025731 109.77689 38.182475 6544.5144 1.2087481e+10 0.17418559 0.052061628 109.84906 38.047745 6546.9669 1.1228291e+10 0.17207211 0.053260123 109.93028 37.902015 6549.4194 1.0370298e+10 0.16888864 0.054393681 110.01827 37.748034 6551.8719 9.5252619e+09 0.16603237 0.055541803 110.10212 37.594054 6554.3244 8.7309871e+09 0.16260497 0.054839188 110.18461 37.440074 6556.7769 8.0174662e+09 0.15986721 0.053898904 110.26709 37.286095 6559.2294 7.3857864e+09 0.15669017 0.052361286 110.34958 37.132116 6561.6819 6.7889558e+09 0.15363548 0.051036641 110.43207 36.978134 6564.1344 6.2430080e+09 0.15036047 0.048710671 110.51292 36.824154 6566.5869 5.7400939e+09 0.14808624 0.046850852 110.58991 36.670174 6569.0394 5.3082478e+09 0.14583210 0.044854992 110.66459 36.527728 6571.4920 4.9770208e+09 0.14406979 0.044368913 110.73677 36.397810 6573.9445 4.6856918e+09 0.14132213 0.042899574 110.81308 36.258241 6576.3970 4.4132394e+09 0.13869860 0.040914475 110.89557 36.104261 6578.8495 4.1262905e+09 0.13545131 0.037308196 110.97486 35.950281 6581.3020 3.8359348e+09 0.13264485 0.035505165 111.05185 35.796299 6583.7545 3.5640549e+09 0.13005459 0.034639779 111.12884 35.642320 6586.2070 3.3145326e+09 0.12735547 0.033168620 111.20583 35.488341 6588.6595 3.1130884e+09 0.12482627 0.033159689 111.27371 35.352568 6591.1120 2.9401298e+09 0.12128444 0.029075525 111.34108 35.217839 6593.5645 2.7980716e+09 0.11784377 0.026577397 111.41679 35.071179 6596.0170 2.6395694e+09 0.11375559 0.025727197 111.49378 34.922428 6598.4695 2.4764697e+09 0.11063350 0.025182998 111.57077 34.768448 6600.9220 2.3141326e+09 0.10912288 0.026885398 111.64650 34.614468 6603.3745 2.1487140e+09 0.10699095 0.026441549 111.71799 34.460487 6605.8270 2.0137478e+09 0.10568197 0.027358866 111.78778 34.314444 6608.2795 1.8937890e+09 0.10297254 0.023724980 111.85514 34.179715 6610.7321 1.7992779e+09 0.099690671 0.024702440 111.92389 34.040392 6613.1846 1.7091659e+09 0.098551714 0.023641306 111.99538 33.891910 6615.6371 1.6043411e+09 0.097322012 0.023271132 112.06970 33.740594 6618.0896 1.5071029e+09 0.096788070 0.023838435 112.14669 33.586615 6620.5421 1.4221528e+09 0.096191118 0.024941882 112.21362 33.446057 6622.9946 1.3537258e+09 0.094796781 0.024493267 112.27617 33.311326 6625.4471 1.2940260e+09 0.093302786 0.025931119 112.34426 33.168084 6627.8996 1.2308800e+09 0.091468084 0.025664311 112.41575 33.019605 6630.3521 1.1621703e+09 0.089992889 0.025929169 112.48724 32.866721 6632.8046 1.0959677e+09 0.088405158 0.026128824 112.55873 32.712740 6635.2571 1.0297140e+09 0.086861286 0.026438346 112.62482 32.558761 6637.7096 9.6541557e+08 0.085514715 0.025813860 112.69025 32.408722 6640.1621 9.1375496e+08 0.085306702 0.025250815 112.75280 32.278804 6642.6146 8.6642283e+08 0.085122876 0.025176848 112.81611 32.146826 6645.0671 8.2852790e+08 0.083878714 0.025483138 112.88761 31.992846 6647.5196 7.8430247e+08 0.082474822 0.026711377 112.95763 31.840335 6649.9722 7.3494871e+08 0.081520989 0.026293621 113.02362 31.691856 6652.4247 6.9203510e+08 0.080799308 0.027367362 113.08807 31.549546 6654.8772 6.5757147e+08 0.079459476 0.027662544 113.15062 31.414816 6657.3297 6.3002682e+08 0.077173791 0.029283521 113.21445 31.274992 6659.7822 6.0030905e+08 0.075527755 0.031671435 113.28044 31.126511 6662.2347 5.6968456e+08 0.074036298 0.032912599 113.34643 30.974994 6664.6872 5.3681099e+08 0.073307655 0.029691683 113.41242 30.821014 6667.1397 5.0193389e+08 0.073282088 0.027154771 113.47842 30.671068 6669.5922 4.6795822e+08 0.072595949 0.027747468 113.54441 30.522587 6672.0447 4.3978529e+08 0.072678221 0.026905514 113.60285 30.386692 6674.4972 4.1952429e+08 0.071653086 0.029374226 113.66059 30.251962 6676.9497 4.0155643e+08 0.069270756 0.032325815 113.72523 30.105723 6679.4022 3.8244372e+08 0.068970097 0.029935387 113.79123 29.957140 6681.8547 3.6075694e+08 0.070070997 0.030313098 113.85722 29.803161 6684.3072 3.4046889e+08 0.070331957 0.032669683 113.92211 29.650282 6686.7597 3.2130166e+08 0.068994371 0.034203117 113.98260 29.501800 6689.2123 3.0424150e+08 0.065947105 0.033824962 114.04204 29.360405 6691.6648 2.9396619e+08 0.064751008 0.032844423 114.09978 29.230487 6694.1173 2.8297934e+08 0.063541743 0.031096672 114.16003 29.093266 6696.5698 2.7123514e+08 0.063117735 0.029912514 114.22602 28.939287 6699.0223 2.5377388e+08 0.061616549 0.031569875 114.28935 28.787975 6701.4748 2.3691506e+08 0.059481329 0.032106090 114.34984 28.639494 6703.9273 2.2541754e+08 0.059281699 0.035995612 114.41033 28.491014 6706.3798 2.1594800e+08 0.058953718 0.039107411 114.47082 28.342533 6708.8323 2.0697365e+08 0.058069867 0.040949927 114.53598 28.189387 6711.2848 1.9465254e+08 0.055839211 0.041016268 114.60158 28.036125 6713.7373 1.8538469e+08 0.053174293 0.046353337 114.65451 27.906207 6716.1898 1.7760692e+08 0.050943854 0.048680950 114.70744 27.776289 6718.6423 1.7284856e+08 0.048254584 0.050812792 114.76756 27.628707 6721.0948 1.6581192e+08 0.048157655 0.050332473 114.82806 27.480226 6723.5473 1.5765775e+08 0.046446059 0.049674205 114.88855 27.331745 6725.9998 1.5212613e+08 0.042053791 0.040951366 114.94904 27.181534 6728.4524 1.4606009e+08 0.041146106 0.040269232 115.00953 27.027554 6730.9049 1.4121607e+08 0.039260272 0.041619575 115.07003 26.876304 6733.3574 1.3244539e+08 0.037675688 0.045864548 115.13052 26.727822 6735.8099 1.2493496e+08 0.038557601 0.050153171 115.18728 26.579341 6738.2624 1.2027357e+08 0.039893929 0.058765602 115.24227 26.430860 6740.7149 1.1704676e+08 0.039151576 0.065271619 115.30199 26.282379 6743.1674 1.1343253e+08 0.035208200 0.072176651 115.36249 26.133899 6745.6199 1.0887581e+08 0.032293394 0.078827486 115.42298 25.985419 6748.0724 1.0204092e+08 0.028001532 0.067397813 115.48225 25.836939 6750.5249 95471652. 0.025127235 0.072900435 115.53724 25.688458 6752.9774 92408677. 0.022409408 0.073003424 115.59445 25.539977 6755.4299 89010185. 0.020269414 0.074416852 115.65495 25.391496 6757.8824 86317785. 0.019005560 0.074062124 115.71222 25.243015 6760.3349 80255021. 0.019639333 0.076699975 115.76721 25.094533 6762.7874 74929602. 0.024441190 0.076780640 115.82220 24.946053 6765.2399 73544120. 0.027471788 0.079574996 115.87719 24.797573 6767.6925 70787802. 0.025926490 0.081200398 115.93219 24.649092 6770.1450 67223556. 0.020720094 0.087231289 115.98790 24.500612 6772.5975 62884295. 0.016126008 0.093179695 116.04839 24.352131 6775.0500 56282372. 0.011090188 0.099128101 116.10716 24.203650 6777.5025 56351251. 0.0066661544 0.10507651 116.16216 24.055169 6779.9550 54407300. 0.0016820590 0.11102491 116.21715 23.906688 6782.4075 52760337. -0.0037267124 0.11697332 116.27215 23.758206 6784.8600 54909591. -0.0091371844 0.12292172 116.32714 23.609726 6787.3125 49429723. -0.017634781 0.12887013 116.38213 23.461246 6789.7650 47555718. -0.029590721 0.13481854 116.44498 23.297053 6792.2175 46285539. -0.076618120 0.14076694 116.50640 23.135707 6794.6700 45301582. -0.047266990 0.14671535 116.56139 22.987226 6797.1225 47049867. 0.023312560 0.15266375 116.61375 22.838745