# # 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 = 53.279611 km # Date (UTC) = 2015-12-19T10:01:51.613 # Date (julian) = 2457375.91795848 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6488.1707 8.6359968e+10 0.021747000 0.028716108 106.03540 27.982622 6490.5645 7.9034936e+10 0.028999016 0.029437969 106.09042 27.869902 6492.9584 7.1347372e+10 0.036067628 0.030159830 106.14887 27.757184 6495.3522 6.4851390e+10 0.042717539 0.030881691 106.20732 27.644466 6497.7461 5.9075355e+10 0.048927516 0.031603552 106.26250 27.528466 6500.1400 5.4142793e+10 0.054664729 0.032325413 106.31678 27.411556 6502.5338 4.9735454e+10 0.060055065 0.033047274 106.37105 27.296272 6504.9277 4.5679497e+10 0.065358022 0.033769135 106.42533 27.183553 6507.3215 4.2013687e+10 0.070973823 0.034490996 106.47960 27.070833 6509.7154 3.8668159e+10 0.077382036 0.035212857 106.53387 26.958114 6512.1092 3.5579940e+10 0.085041723 0.035934719 106.58814 26.845395 6514.5031 3.2758539e+10 0.094400051 0.036656580 106.64241 26.732677 6516.8970 3.0148019e+10 0.10580662 0.037378441 106.69669 26.619958 6519.2908 2.7717244e+10 0.11941230 0.038100302 106.75096 26.507236 6521.6847 2.5432926e+10 0.13522364 0.038822163 106.80524 26.394502 6524.0785 2.3233226e+10 0.14698455 0.039454855 106.85952 26.281768 6526.4724 2.1206121e+10 0.15847328 0.040163319 106.91379 26.165677 6528.8662 1.9321724e+10 0.16888695 0.042129668 106.96807 26.048783 6531.2601 1.7607005e+10 0.17663368 0.045607243 107.02234 25.933607 6533.6539 1.6058163e+10 0.18101514 0.047797495 107.07661 25.820888 6536.0478 1.4645965e+10 0.18005658 0.047833272 107.13081 25.708169 6538.4417 1.3371353e+10 0.17954123 0.049371746 107.18091 25.595451 6540.8355 1.2229700e+10 0.17746308 0.051248821 107.23101 25.482732 6543.2294 1.1203450e+10 0.17496651 0.051442093 107.28370 25.370004 6545.6232 1.0298786e+10 0.17242757 0.052461151 107.33798 25.257270 6548.0171 9.5164328e+09 0.17047931 0.053672748 107.39131 25.144539 6550.4109 8.8111196e+09 0.16844976 0.055088255 107.44141 25.031820 6552.8048 8.1749368e+09 0.16642503 0.055384200 107.49151 24.919101 6555.1987 7.5775023e+09 0.16409928 0.054686449 107.54507 24.806381 6557.5925 7.0216974e+09 0.16151084 0.053494721 107.59935 24.693662 6559.9864 6.5016636e+09 0.15875604 0.052275848 107.65180 24.580944 6562.3802 6.0234535e+09 0.15543255 0.050518108 107.70190 24.468225 6564.7741 5.5872492e+09 0.15241231 0.048420785 107.75200 24.355506 6567.1679 5.1944019e+09 0.14976244 0.046475194 107.80210 24.242772 6569.5618 4.8511766e+09 0.14727398 0.044888988 107.85221 24.130038 6571.9556 4.5367892e+09 0.14490419 0.044242269 107.90231 24.020006 6574.3495 4.2450097e+09 0.14161171 0.042687140 107.95240 23.911461 6576.7434 3.9778855e+09 0.13831828 0.040515771 108.00250 23.801875 6579.1372 3.7254648e+09 0.13423333 0.036995064 108.05260 23.689156 6581.5311 3.4990740e+09 0.13053946 0.035435793 108.10269 23.576437 6583.9249 3.2835763e+09 0.12700935 0.034553509 108.15279 23.463718 6586.3188 3.0744443e+09 0.12409094 0.033167175 108.20289 23.351000 6588.7126 2.8830192e+09 0.12192790 0.033141942 108.25299 23.238274 6591.1065 2.7071225e+09 0.11944576 0.029081740 108.30309 23.125540 6593.5004 2.5516268e+09 0.11729472 0.026637044 108.35320 23.012807 6595.8942 2.4087456e+09 0.11447231 0.025716303 108.40329 22.900088 6598.2881 2.2752609e+09 0.11253139 0.025269632 108.45339 22.787369 6600.6819 2.1522361e+09 0.11209489 0.026391782 108.50349 22.677440 6603.0758 2.0378622e+09 0.11114604 0.026618413 108.55358 22.568896 6605.4696 1.9220408e+09 0.11043996 0.027059030 108.60254 22.459211 6607.8635 1.8135577e+09 0.10846083 0.024001924 108.64846 22.346492 6610.2573 1.7136349e+09 0.10519890 0.024248869 108.69439 22.233772 6612.6512 1.6253962e+09 0.10318659 0.023834197 108.74398 22.121041 6615.0451 1.5478919e+09 0.10185278 0.023252918 108.79408 22.008308 6617.4389 1.4686792e+09 0.10042937 0.023584771 108.84217 21.897597 6619.8328 1.3920765e+09 0.099634559 0.024726849 108.88809 21.789053 6622.2266 1.3248406e+09 0.098095968 0.024697671 108.93438 21.680143 6624.6205 1.2594801e+09 0.096098807 0.025194452 108.98448 21.567424 6627.0143 1.1970130e+09 0.093752693 0.025322350 109.03458 21.454705 6629.4082 1.1355850e+09 0.092311467 0.026035301 109.08179 21.344875 6631.8021 1.0791040e+09 0.090139500 0.026012238 109.12771 21.236331 6634.1959 1.0240622e+09 0.088202570 0.026341133 109.17534 21.122365 6636.5898 9.6826762e+08 0.086374505 0.026320722 109.22700 20.995554 6638.9836 9.1505822e+08 0.085078695 0.025628788 109.27840 20.871803 6641.3775 8.6794524e+08 0.085870760 0.025149582 109.32850 20.763244 6643.7713 8.2835178e+08 0.085264671 0.025309081 109.37861 20.654684 6646.1652 7.8941820e+08 0.084434936 0.026005656 109.42548 20.542912 6648.5590 7.4827295e+08 0.083523400 0.027338513 109.47140 20.430194 6650.9529 7.0809401e+08 0.083205958 0.026473384 109.51733 20.319050 6653.3468 6.7665918e+08 0.082897513 0.027702705 109.56325 20.210506 6655.7406 6.4680178e+08 0.081340642 0.027916241 109.60917 20.101962 6658.1345 6.2389915e+08 0.079735168 0.030299571 109.65509 19.993418 6660.5283 6.0033018e+08 0.078182730 0.032106224 109.70102 19.884873 6662.9222 5.7320016e+08 0.076870227 0.032526871 109.75031 19.765603 6665.3160 5.4258201e+08 0.076325357 0.028029284 109.80198 19.638772 6667.7099 5.1004879e+08 0.075828524 0.027364216 109.85102 19.520312 6670.1038 4.8337177e+08 0.075216267 0.027280565 109.89695 19.411768 6672.4976 4.5889799e+08 0.074919892 0.027168024 109.94261 19.303224 6674.8915 4.4227294e+08 0.073429071 0.029706803 109.98436 19.194679 6677.2853 4.2313200e+08 0.071175377 0.031952600 110.02610 19.086135 6679.6792 4.0193127e+08 0.071027366 0.029706527 110.07447 18.968539 6682.0730 3.7920654e+08 0.071923738 0.030480345 110.12613 18.846426 6684.4669 3.5852698e+08 0.072035297 0.032677785 110.17470 18.729366 6686.8607 3.4460739e+08 0.070452197 0.034261882 110.22063 18.616646 6689.2546 3.3247765e+08 0.067427625 0.033786839 110.26670 18.502584 6691.6485 3.1881578e+08 0.066365328 0.032848269 110.31367 18.380452 6694.0423 2.9867506e+08 0.065443003 0.031201716 110.36063 18.258506 6696.4362 2.8214585e+08 0.065435859 0.029857007 110.40656 18.149962 6698.8300 2.6856089e+08 0.064365753 0.031357129 110.45248 18.041418 6701.2239 2.5813596e+08 0.062542842 0.031737952 110.49840 17.932874 6703.6177 2.5119396e+08 0.062507765 0.035221025 110.54432 17.824330 6706.0116 2.3950448e+08 0.062655363 0.038466592 110.59048 17.712758 6708.4055 2.2932013e+08 0.062274831 0.040485105 110.63745 17.590643 6710.7993 2.2442711e+08 0.060626656 0.040652950 110.68441 17.468528 6713.1932 2.1442018e+08 0.058449922 0.044385273 110.73138 17.346414 6715.5870 2.0423249e+08 0.056375476 0.047978980 110.77834 17.224300 6717.9809 1.9277251e+08 0.054188289 0.049813596 110.82431 17.115264 6720.3747 1.8267504e+08 0.053234944 0.050376347 110.87024 17.006705 6722.7686 1.7795359e+08 0.052619022 0.049655023 110.91676 16.890423 6725.1624 1.7102549e+08 0.048216106 0.041474546 110.96373 16.768310 6727.5563 1.6350230e+08 0.046834018 0.040219227 111.00839 16.652175 6729.9502 1.5486310e+08 0.045688417 0.040412120 111.05014 16.543631 6732.3440 1.4732738e+08 0.043968056 0.043803542 111.09212 16.434473 6734.7379 1.3929467e+08 0.043652894 0.049309204 111.13909 16.312358 6737.1317 1.2982550e+08 0.045502947 0.054555198 111.18606 16.190243 6739.5256 1.2727330e+08 0.045880370 0.063469771 111.23733 16.068129 6741.9194 1.2352193e+08 0.043750962 0.068380999 111.28900 15.946014 6744.3133 1.1904749e+08 0.038889824 0.078035742 111.33696 15.823900 6746.7072 1.1371634e+08 0.035133754 0.070765795 111.38393 15.701786 6749.1010 1.0822157e+08 0.033869705 0.072250276 111.42747 15.591335 6751.4949 1.0725356e+08 0.030165310 0.073920904 111.46922 15.486952 6753.8887 1.0271445e+08 0.028131143 0.075853366 111.51234 15.377909 6756.2826 97006094. 0.025458418 0.074894033 111.55931 15.255795 6758.6764 92766118. 0.025539509 0.075135740 111.60627 15.133681 6761.0703 87916649. 0.026262525 0.077974033 111.65324 15.011566 6763.4642 82936580. 0.031865437 0.077851344 111.70018 14.889480 6765.8580 79095413. 0.034180243 0.079687825 111.74246 14.772056 6768.2519 76986487. 0.030925964 0.081762288 111.78473 14.654638 6770.6457 76880346. 0.026151322 0.088445854 111.83111 14.533109 6773.0396 76271986. 0.021894118 0.094252007 111.87808 14.410995 6775.4334 73892049. 0.017610903 0.10005816 111.92504 14.288881 6777.8273 71704991. 0.013316668 0.10586432 111.97201 14.166767 6780.2211 69930256. 0.0090070534 0.11167047 112.01898 14.047550 6782.6150 62523055. 0.0045727987 0.11747662 112.06594 13.930132 6785.0089 56854042. 7.0287679e-05 0.12328278 112.11291 13.810423 6787.4027 53429312. -0.0045097498 0.12908893 112.15988 13.688309 6789.7966 52701750. -0.0091935266 0.13489509 112.20517 13.567879 6792.1904 52590970. -0.014163243 0.14070124 112.24743 13.450462 6794.5843 50130179. -0.020594492 0.14650739 112.29078 13.331962 6796.9781 47338378. -0.037491783 0.15231355 112.33776 13.209830 6799.3720 45244811. -0.031809539 0.15811970 112.38486 13.086483 6801.7659 44985860. -0.012925000 0.16392586 112.43318 12.952289