# # 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 = 48.715207 km # Date (UTC) = 2013-12-04T06:52:14.581 # Date (julian) = 2456630.78627988 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.1924 5.8338626e+10 0.046838496 0.032039682 17.580457 53.570999 6501.4546 5.4936328e+10 0.053830470 0.032721854 17.458138 53.476301 6503.7169 5.1177032e+10 0.060926124 0.033404025 17.325705 53.370564 6505.9791 4.7479764e+10 0.068182307 0.034086197 17.192550 53.264040 6508.2414 4.3725601e+10 0.075638313 0.034768369 17.069464 53.168256 6510.5036 4.0717275e+10 0.083582046 0.035450540 16.951107 53.077515 6512.7658 3.8054622e+10 0.092078423 0.036132712 16.830594 52.984475 6515.0281 3.5332046e+10 0.10108393 0.036814884 16.697439 52.877951 6517.2903 3.2763679e+10 0.11075731 0.037497056 16.564284 52.771426 6519.5525 3.0363810e+10 0.12114937 0.038179227 16.447862 52.675471 6521.8148 2.8433200e+10 0.13254652 0.038861399 16.333451 52.580787 6524.0770 2.6668952e+10 0.13877213 0.039454322 16.213918 52.481863 6526.3393 2.4765448e+10 0.14408381 0.040023758 16.085202 52.375339 6528.6015 2.2923524e+10 0.14943658 0.041919650 15.957987 52.270057 6530.8637 2.1249434e+10 0.15393164 0.045037906 15.843560 52.175359 6533.1260 1.9881296e+10 0.15933727 0.047573120 15.729133 52.080662 6535.3882 1.8605304e+10 0.16234895 0.048055894 15.609085 51.979216 6537.6504 1.7268645e+10 0.16538967 0.048991881 15.484807 51.872692 6539.9127 1.5979629e+10 0.16775579 0.050748406 15.364916 51.769928 6542.1749 1.4860279e+10 0.16729288 0.051068647 15.254449 51.675243 6544.4372 1.3916088e+10 0.16631708 0.051998978 15.143983 51.580558 6546.6994 1.3005996e+10 0.16465384 0.053040015 15.026179 51.476604 6548.9616 1.2082716e+10 0.16266608 0.053954822 14.906341 51.370080 6551.2239 1.1199620e+10 0.16139960 0.055314333 14.793558 51.269830 6553.4861 1.0473411e+10 0.16014224 0.055090707 14.687037 51.175144 6555.7483 9.8540534e+09 0.15842973 0.054224576 14.580463 51.080414 6558.0106 9.2412732e+09 0.15708476 0.053230287 14.460741 50.973993 6560.2728 8.6255681e+09 0.15511746 0.052028327 14.340902 50.867469 6562.5351 8.0184632e+09 0.15308006 0.050370777 14.230936 50.769721 6564.7973 7.5223313e+09 0.15128914 0.048410263 14.124400 50.675021 6567.0595 7.0945957e+09 0.14983729 0.046566852 14.016023 50.577866 6569.3218 6.6503217e+09 0.14851521 0.044873367 13.900622 50.471344 6571.5840 6.2160331e+09 0.14758532 0.044343771 13.785222 50.364821 6573.8462 5.8067283e+09 0.14583824 0.042978391 13.685832 50.265833 6576.1085 5.4758708e+09 0.14400990 0.041246529 13.587201 50.167202 6578.3707 5.1782641e+09 0.14178093 0.038064205 13.481526 50.065255 6580.6330 4.8568963e+09 0.13941966 0.035935809 13.366127 49.958732 6582.8952 4.5466823e+09 0.13740856 0.035050187 13.253527 49.854185 6585.1574 4.2693097e+09 0.13504031 0.033844910 13.154896 49.759500 6587.4197 4.0351972e+09 0.13244372 0.033251352 13.056265 49.664815 6589.6819 3.8193540e+09 0.12968981 0.031693136 12.949827 49.562634 6591.9441 3.5893617e+09 0.12673819 0.028136553 12.838849 49.456094 6594.2064 3.3636035e+09 0.12427858 0.026059230 12.734055 49.352557 6596.4686 3.1708725e+09 0.12181517 0.025725143 12.639369 49.253926 6598.7309 3.0079217e+09 0.12011601 0.025058228 12.544683 49.155295 6600.9931 2.8566935e+09 0.12018600 0.027031494 12.439996 49.049996 6603.2553 2.6947219e+09 0.11933778 0.026512118 12.333472 48.943474 6605.5176 2.5376243e+09 0.11889845 0.027099243 12.233956 48.843957 6607.7798 2.4026987e+09 0.11710064 0.024167170 12.139270 48.749271 6610.0420 2.2889941e+09 0.11402982 0.024043151 12.043908 48.653654 6612.3043 2.1798726e+09 0.11171213 0.024093404 11.937384 48.542692 6614.5665 2.0628546e+09 0.11058808 0.023550183 11.830861 48.431730 6616.8288 1.9394703e+09 0.10910592 0.023412372 11.727907 48.324337 6619.0910 1.8256606e+09 0.10829059 0.024547870 11.625822 48.217813 6621.3532 1.7189555e+09 0.10724443 0.024972366 11.529983 48.117807 6623.6155 1.6337307e+09 0.10514140 0.024719848 11.439230 48.023109 6625.8777 1.5589512e+09 0.10345657 0.026444972 11.348288 47.928139 6628.1399 1.4822057e+09 0.10123522 0.025759914 11.246203 47.817177 6630.4022 1.4045621e+09 0.099221916 0.025929293 11.144118 47.706215 6632.6644 1.3270566e+09 0.097145478 0.026112014 11.053710 47.607684 6634.9267 1.2682488e+09 0.095022229 0.026394438 10.966915 47.512998 6637.1889 1.2113288e+09 0.092775788 0.026068897 10.877634 47.414584 6639.4511 1.1583508e+09 0.091371960 0.025466830 10.779988 47.303621 6641.7134 1.1009476e+09 0.091328924 0.025150723 10.682341 47.192659 6643.9756 1.0442895e+09 0.090148881 0.025339923 10.584695 47.086030 6646.2378 9.8994925e+08 0.089199945 0.026043263 10.487049 46.979508 6648.5001 9.3391455e+08 0.088249268 0.027299041 10.397239 46.878682 6650.7623 8.8971785e+08 0.087740510 0.026429754 10.310433 46.780038 6653.0246 8.4900476e+08 0.087368539 0.027538200 10.221581 46.679908 6655.2868 8.1386341e+08 0.085913159 0.027728720 10.123935 46.573384 6657.5490 7.7877397e+08 0.084058773 0.029537971 10.026289 46.466860 6659.8113 7.3457363e+08 0.082605577 0.031665367 9.9327958 46.356184 6662.0735 6.9353822e+08 0.081083386 0.033003029 9.8395880 46.245222 6664.3357 6.5829926e+08 0.079856322 0.030977613 9.7534498 46.145370 6666.5980 6.2814530e+08 0.079636262 0.027025119 9.6705994 46.050685 6668.8602 6.0380342e+08 0.078239919 0.028232007 9.5868738 45.953593 6671.1225 5.7973702e+08 0.078060582 0.026867093 9.4981041 45.842631 6673.3847 5.5379471e+08 0.077330361 0.028034556 9.4093345 45.731670 6675.6469 5.2936896e+08 0.075072485 0.031037469 9.3165935 45.624679 6677.9092 5.0293652e+08 0.073534201 0.031065739 9.2233857 45.518155 6680.1714 4.7432072e+08 0.073587545 0.029478430 9.1330267 45.408783 6682.4336 4.4869807e+08 0.074127911 0.030755864 9.0442575 45.297822 6684.6959 4.2634263e+08 0.073935682 0.032689405 8.9593192 45.193183 6686.9581 4.0885519e+08 0.072095732 0.034318533 8.8804037 45.098485 6689.2204 3.9399767e+08 0.069024482 0.033817668 8.8014881 45.003787 6691.4826 3.8128050e+08 0.067840403 0.032887402 8.7141534 44.895193 6693.7448 3.6467354e+08 0.066801864 0.031348565 8.6253842 44.784232 6696.0071 3.4644692e+08 0.066665083 0.029678723 8.5366150 44.675939 6698.2693 3.2786955e+08 0.065852793 0.030587472 8.4478458 44.569415 6700.5315 3.1125696e+08 0.064165665 0.031061980 8.3606227 44.461345 6702.7938 3.0234687e+08 0.063372064 0.033510569 8.2762917 44.350384 6705.0560 2.8677672e+08 0.063668829 0.036768198 8.1919606 44.239845 6707.3183 2.7177792e+08 0.063346472 0.040141236 8.1076300 44.133321 6709.5805 2.5788141e+08 0.062519987 0.040763320 8.0232994 44.026797 6711.8427 2.4649890e+08 0.060410286 0.041651031 7.9389682 43.916535 6714.1050 2.3963849e+08 0.058103584 0.047311300 7.8546368 43.805573 6716.3672 2.2884904e+08 0.056216585 0.048942222 7.7703058 43.697227 6718.6294 2.2443576e+08 0.053691269 0.050792726 7.6859750 43.590705 6720.8917 1.9953822e+08 0.053807680 0.050316449 7.6031365 43.482690 6723.1539 1.8514882e+08 0.052699067 0.049454788 7.5232440 43.371728 6725.4162 1.7425876e+08 0.048365171 0.041316067 7.4429812 43.261135 6727.6784 1.6498849e+08 0.047100393 0.040056570 7.3586380 43.154595 6729.9406 1.7064276e+08 0.045670194 0.040418472 7.2742947 43.048055 6732.2029 1.5841331e+08 0.043884227 0.043777557 7.1936475 42.937842 6734.4651 1.5170188e+08 0.043170564 0.049325615 7.1137546 42.826880 6736.7273 1.4688765e+08 0.044780553 0.053104775 7.0338620 42.718482 6738.9896 1.3980272e+08 0.045468283 0.062769196 6.9539697 42.611960 6741.2518 1.3375755e+08 0.043930186 0.066476895 6.8740774 42.503997 6743.5141 1.2784284e+08 0.039537556 0.074515254 6.7941849 42.393036 6745.7763 1.1967407e+08 0.037400776 0.078893234 6.7146095 42.282074 6748.0385 1.1555951e+08 0.033225180 0.067219618 6.6391558 42.171112 6750.3008 1.1236779e+08 0.030476354 0.072517708 6.5637021 42.060151 6752.5630 1.0763721e+08 0.027660354 0.073482972 6.4846157 41.952821 6754.8252 1.0060160e+08 0.025985931 0.074886375 6.4047232 41.846297 6757.0875 91952997. 0.023170635 0.076474572 6.3273399 41.737264 6759.3497 87056797. 0.024179390 0.075904347 6.2518856 41.626302 6761.6120 83527498. 0.026541245 0.078018784 6.1764314 41.516726 6763.8742 82384191. 0.030704628 0.079100142 6.1009777 41.410204 6766.1364 76907363. 0.032346217 0.080022359 6.0248844 41.302478 6768.3987 71509375. 0.028591317 0.082290532 5.9386496 41.175662 6770.6609 66123882. 0.023991496 0.088482690 5.8533630 41.050631 6772.9231 62099029. 0.019851342 0.093969611 5.7779091 40.944107 6775.1854 62057728. 0.015883100 0.099456532 5.7024552 40.837583 6777.4476 59946639. 0.011819962 0.10494345 5.6306983 40.727341 6779.7099 60083239. 0.0078473695 0.11043037 5.5596723 40.616362 6781.9721 58313876. 0.0037519500 0.11591729 5.4797994 40.499129 6784.2343 58073270. -0.00031024062 0.12140421 5.3935786 40.377406 6786.4966 56091792. -0.0045361823 0.12689113 5.3166350 40.262244 6788.7588 54300699. -0.0088821460 0.13237805 5.2456088 40.151266 6791.0210 52153815. -0.013447933 0.13786498 5.1709554 40.036435 6793.2833 50915616. -0.018278270 0.14335190 5.0897932 39.914691 6795.5455 52580651. -0.023375467 0.14883882 5.0125528 39.797114 6797.8078 48781304. -0.031229105 0.15432574 4.9415374 39.686152 6800.0700 47648456. -0.055971136 0.15981266 4.8691678 39.573752 6802.3322 47066798. -0.042472497 0.16529958 4.7880055 39.452007 6804.5945 46711894. -0.0094604161 0.17078650 4.7092074 39.332011