# # 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 = 50.197911 km # Date (UTC) = 2011-12-21T09:05:09.298 # Date (julian) = 2455916.87857983 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6487.0218 7.4688609e+10 0.031929500 0.028369664 -20.669458 46.083631 6489.4182 6.5792531e+10 0.039329340 0.029092292 -20.765580 45.979150 6491.8146 5.8338268e+10 0.046326273 0.029814920 -20.861701 45.874670 6494.2110 5.2615147e+10 0.052725027 0.030537548 -20.957823 45.770190 6496.6074 4.8326464e+10 0.058559638 0.031260175 -21.054439 45.664980 6499.0038 4.4603657e+10 0.064077584 0.031982803 -21.162594 45.542718 6501.4002 4.1234823e+10 0.069310297 0.032705431 -21.270750 45.420457 6503.7966 3.8237451e+10 0.074152171 0.033428059 -21.364079 45.314456 6506.1930 3.5770167e+10 0.078507464 0.034150687 -21.456022 45.209975 6508.5894 3.3740504e+10 0.082511349 0.034873315 -21.547964 45.105495 6510.9858 3.1753799e+10 0.086499777 0.035595942 -21.639907 45.001015 6513.3822 2.9861496e+10 0.091185626 0.036318570 -21.731849 44.896534 6515.7786 2.8029041e+10 0.097429519 0.037041198 -21.823792 44.792054 6518.1750 2.6272522e+10 0.10602460 0.037763826 -21.915736 44.687574 6520.5714 2.4620396e+10 0.11769132 0.038486454 -22.007687 44.583083 6522.9678 2.3019107e+10 0.13004242 0.039170675 -22.099642 44.478589 6525.3642 2.1415302e+10 0.14130259 0.039740652 -22.195541 44.367996 6527.7606 1.9716841e+10 0.15370477 0.041268658 -22.298978 44.245753 6530.1570 1.8027501e+10 0.16476427 0.044048459 -22.399019 44.127359 6532.5534 1.6466907e+10 0.17198123 0.047146478 -22.486783 44.022879 6534.9498 1.5128553e+10 0.17447941 0.048210246 -22.574547 43.918399 6537.3462 1.3998310e+10 0.17313811 0.048848431 -22.662310 43.813918 6539.7426 1.2997290e+10 0.17213799 0.050542492 -22.750073 43.709438 6542.1390 1.2128730e+10 0.16976691 0.051054999 -22.837837 43.604957 6544.5354 1.1387621e+10 0.16794683 0.052078651 -22.925600 43.500477 6546.9318 1.0697551e+10 0.16635747 0.053231222 -23.013605 43.395315 6549.3282 9.9659361e+09 0.16455836 0.054300711 -23.107652 43.273052 6551.7246 9.2271050e+09 0.16348158 0.055490086 -23.201699 43.150789 6554.1210 8.5254191e+09 0.16168961 0.054834919 -23.286207 43.044739 6556.5174 7.9352198e+09 0.16015952 0.053937063 -23.369792 42.940259 6558.9138 7.4441466e+09 0.15808267 0.052460663 -23.453377 42.835779 6561.3102 6.9643475e+09 0.15582559 0.051219838 -23.536961 42.731298 6563.7066 6.4932065e+09 0.15354548 0.049111034 -23.620546 42.626818 6566.1030 6.0525102e+09 0.15152584 0.047124638 -23.704129 42.522338 6568.4994 5.6595120e+09 0.15010163 0.045312628 -23.787713 42.417857 6570.8958 5.3160567e+09 0.14850257 0.044546454 -23.871306 42.310302 6573.2922 5.0099579e+09 0.14644472 0.043423029 -23.954901 42.201629 6575.6886 4.7114112e+09 0.14373695 0.041683865 -24.040453 42.089932 6578.0850 4.4129002e+09 0.14069049 0.038515452 -24.129785 41.972390 6580.4814 4.1221791e+09 0.13717966 0.036075907 -24.217887 41.857643 6582.8778 3.8528178e+09 0.13417397 0.035054932 -24.301471 41.753162 6585.2742 3.6208598e+09 0.13136003 0.033751590 -24.385055 41.648682 6587.6706 3.4099635e+09 0.12924015 0.033306939 -24.465207 41.544202 6590.0670 3.2151192e+09 0.12728150 0.030937518 -24.544613 41.439721 6592.4634 3.0423543e+09 0.12486389 0.027623466 -24.624018 41.333450 6594.8598 2.8841794e+09 0.12248604 0.025700559 -24.703423 41.224790 6597.2562 2.7434449e+09 0.11981338 0.025641895 -24.783015 41.115813 6599.6526 2.5836366e+09 0.11858890 0.024968978 -24.867657 40.998253 6602.0490 2.4189781e+09 0.11832670 0.027474859 -24.952300 40.880693 6604.4454 2.2660236e+09 0.11708272 0.026335712 -25.032181 40.775023 6606.8418 2.1309552e+09 0.11616165 0.025991363 -25.111586 40.670542 6609.2382 2.0232142e+09 0.11274313 0.023776673 -25.188834 40.566062 6611.6346 1.9294448e+09 0.10961148 0.024553800 -25.264060 40.461582 6614.0309 1.8296968e+09 0.10821390 0.023919169 -25.340447 40.354908 6616.4273 1.7188406e+09 0.10642346 0.023349371 -25.425078 40.232665 6618.8237 1.6128811e+09 0.10539291 0.024392823 -25.509705 40.110429 6621.2201 1.5174109e+09 0.10412957 0.025016478 -25.584967 40.005881 6623.6165 1.4417834e+09 0.10177549 0.024720247 -25.660193 39.901400 6626.0129 1.3757802e+09 0.099807790 0.026574410 -25.735425 39.796911 6628.4093 1.3115770e+09 0.097286331 0.025869293 -25.810661 39.692417 6630.8057 1.2525679e+09 0.094769202 0.025930287 -25.886888 39.585167 6633.2021 1.1856707e+09 0.092533888 0.026187545 -25.966817 39.467624 6635.5985 1.1166313e+09 0.090256859 0.026489548 -26.046349 39.351184 6637.9949 1.0525774e+09 0.088666670 0.025674120 -26.121574 39.246704 6640.3913 9.9853791e+08 0.088516546 0.025222771 -26.196799 39.142223 6642.7877 9.5701608e+08 0.088396027 0.025183932 -26.269135 39.034852 6645.1841 9.1379807e+08 0.087420561 0.025537947 -26.340181 38.926191 6647.5805 8.7134006e+08 0.086284014 0.026743436 -26.413882 38.814877 6649.9769 8.2666717e+08 0.085520285 0.026287026 -26.493811 38.697335 6652.3733 7.8004112e+08 0.085034790 0.027353241 -26.572214 38.582036 6654.7697 7.3433103e+08 0.084070715 0.027708311 -26.643270 38.477542 6657.1661 6.9638307e+08 0.082034765 0.029093824 -26.714326 38.373048 6659.5625 6.6019825e+08 0.080436219 0.031717253 -26.792298 38.258384 6661.9589 6.2489224e+08 0.078846007 0.033023356 -26.872226 38.140842 6664.3553 5.9139588e+08 0.077572294 0.030905937 -26.943632 38.031822 6666.7517 5.6159179e+08 0.077322520 0.027055080 -27.010500 37.927342 6669.1481 5.3629893e+08 0.075922608 0.028203560 -27.079539 37.819468 6671.5445 5.0704097e+08 0.075838350 0.026873108 -27.154766 37.701926 6673.9409 4.7771387e+08 0.074928459 0.028866449 -27.229437 37.586119 6676.3373 4.5280827e+08 0.072312131 0.031931131 -27.300484 37.481639 6678.7337 4.3162292e+08 0.071094411 0.030445864 -27.371530 37.377159 6681.1301 4.1179131e+08 0.071803181 0.029757191 -27.445671 37.259533 6683.5265 3.8931464e+08 0.072094039 0.031960213 -27.520897 37.137290 6685.9229 3.6861758e+08 0.071360480 0.033679676 -27.591004 37.025930 6688.3193 3.5458375e+08 0.068296204 0.033858902 -27.657881 36.921435 6690.7157 3.3846227e+08 0.066462434 0.033033841 -27.726600 36.814061 6693.1121 3.2257352e+08 0.065516514 0.031565623 -27.801828 36.696519 6695.5085 3.0407577e+08 0.065112529 0.029766064 -27.876615 36.578977 6697.9049 2.8504533e+08 0.064537817 0.030205785 -27.947140 36.461435 6700.3013 2.6889982e+08 0.062899658 0.030891218 -28.017665 36.343892 6702.6977 2.5605685e+08 0.061967954 0.033433864 -28.084653 36.238980 6705.0941 2.4414321e+08 0.062343880 0.036835935 -28.151521 36.134500 6707.4905 2.3233132e+08 0.062080415 0.040116560 -28.220488 36.022520 6709.8869 2.1969862e+08 0.061183374 0.040568419 -28.291014 35.904977 6712.2833 2.0724493e+08 0.059025636 0.042355987 -28.361539 35.787435 6714.6797 1.9680129e+08 0.056936168 0.047354510 -28.432064 35.669893 6717.0761 1.8727914e+08 0.054863626 0.049869560 -28.501420 35.556530 6719.4725 1.7830560e+08 0.052937701 0.050920913 -28.568297 35.452036 6721.8689 1.7012436e+08 0.053278762 0.050565708 -28.635173 35.347542 6724.2653 1.6362330e+08 0.050635544 0.047711108 -28.701073 35.230941 6726.6617 1.5870536e+08 0.047237087 0.040957335 -28.766897 35.113399 6729.0581 1.5501527e+08 0.046752685 0.041006693 -28.836486 34.995857 6731.4545 1.4751272e+08 0.044841950 0.042654590 -28.907012 34.878315 6733.8509 1.4145756e+08 0.043629986 0.048544159 -28.977537 34.760772 6736.2473 1.3385446e+08 0.045456610 0.051289982 -29.048062 34.643229 6738.6437 1.2825458e+08 0.046656326 0.060865015 -29.118588 34.525687 6741.0401 1.2489670e+08 0.045640225 0.065873087 -29.189113 34.408145 6743.4365 1.1792786e+08 0.041425416 0.073992120 -29.257662 34.290603 6745.8329 1.1206645e+08 0.039331292 0.078917034 -29.323487 34.173060 6748.2293 1.0536936e+08 0.035445527 0.068223296 -29.389311 34.055518 6750.6257 99901533. 0.032910316 0.073072551 -29.455134 33.937976 6753.0221 94955020. 0.030337654 0.073048830 -29.521740 33.820434 6755.4185 90780643. 0.028363008 0.074421857 -29.592266 33.702891 6757.8149 87150046. 0.027096030 0.074267037 -29.662605 33.585347 6760.2113 84811065. 0.028028116 0.076464218 -29.728439 33.467788 6762.6077 80101070. 0.032853403 0.077070570 -29.794272 33.350228 6765.0041 74175029. 0.036079957 0.079531942 -29.860097 33.232684 6767.4005 72939447. 0.035328533 0.081527307 -29.925921 33.115142 6769.7969 70948188. 0.030339731 0.086387097 -29.991744 32.997600 6772.1933 70755058. 0.026135551 0.092199418 -30.057568 32.880058 6774.5897 67493845. 0.022046473 0.098011740 -30.120292 32.765615 6776.9861 63142812. 0.018020893 0.10382406 -30.181413 32.652773 6779.3825 60847825. 0.013943187 0.10963638 -30.245038 32.537429 6781.7789 58209731. 0.0099115404 0.11544871 -30.310863 32.419886 6784.1753 55596429. 0.0059235616 0.12126103 -30.376687 32.302344 6786.5717 53048897. 0.0019958340 0.12707335 -30.442510 32.184802 6788.9681 52880453. -0.0019972415 0.13288567 -30.509457 32.062582 6791.3645 49733715. -0.0056368642 0.13869799 -30.579312 31.928246 6793.7609 47802047. -0.0090247552 0.14451031 -30.645521 31.800923 6796.1573 47076232. -0.012049710 0.15032264 -30.706643 31.683380 6798.5537 44900297. -0.0085558228 0.15613496 -30.769131 31.567205 6800.9501 47018325. -0.019604508 0.16194728 -30.834954 31.454364 6803.3465 45701110. -0.036640918 0.16775960 -30.901438 31.338004