# # 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 = 42.666391 km # Date (UTC) = 2012-01-30T09:53:59.694 # Date (julian) = 2455956.91249645 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.8342 8.9737460e+10 0.10503592 0.035550249 -24.746306 58.303414 6512.7064 7.6009426e+10 0.11378668 0.036114788 -24.949994 58.139097 6514.5785 6.6987197e+10 0.12293756 0.036679327 -25.143911 57.981162 6516.4507 6.0707132e+10 0.13244035 0.037243866 -25.337869 57.828348 6518.3228 5.4479125e+10 0.14194969 0.037808405 -25.549189 57.659410 6520.1950 4.8529831e+10 0.15149408 0.038372945 -25.781082 57.470348 6522.0671 4.3333285e+10 0.16097417 0.038934821 -25.963240 57.311694 6523.9392 3.9275795e+10 0.16538744 0.039411900 -26.145414 57.153026 6525.8114 3.6120109e+10 0.16926877 0.039689614 -26.327616 56.994333 6527.6835 3.2931071e+10 0.17365868 0.041212715 -26.539782 56.814376 6529.5557 2.9821340e+10 0.17636120 0.043120905 -26.752281 56.632948 6531.4278 2.7030257e+10 0.17812927 0.045851352 -26.928564 56.474293 6533.2999 2.4683184e+10 0.17990485 0.047647055 -27.104871 56.315615 6535.1721 2.2856940e+10 0.18036395 0.048149646 -27.281196 56.156923 6537.0442 2.1304274e+10 0.18007486 0.048706078 -27.452270 56.003482 6538.9164 1.9892060e+10 0.17893156 0.049602904 -27.622710 55.849547 6540.7885 1.8621787e+10 0.17777499 0.051226615 -27.793117 55.690891 6542.6607 1.7487783e+10 0.17578258 0.051253058 -27.960663 55.532218 6544.5328 1.6266219e+10 0.17361102 0.052076559 -28.125233 55.373525 6546.4049 1.4961146e+10 0.17105449 0.052797721 -28.322264 55.183532 6548.2771 1.3637310e+10 0.16926321 0.053750390 -28.507856 55.002143 6550.1492 1.2389469e+10 0.16786611 0.055022722 -28.666510 54.843489 6552.0214 1.1352901e+10 0.16615480 0.055581391 -28.825192 54.684806 6553.8935 1.0498600e+10 0.16372562 0.054885917 -28.983118 54.526761 6555.7656 9.8417075e+09 0.16172585 0.054210044 -29.110458 54.394522 6557.6378 9.3381396e+09 0.15986923 0.053466344 -29.237799 54.262284 6559.5099 8.9039397e+09 0.15723373 0.052329625 -29.395912 54.104088 6561.3821 8.4471992e+09 0.15437859 0.051184408 -29.551276 53.943773 6563.2542 7.9451513e+09 0.15191691 0.049634310 -29.698214 53.779200 6565.1263 7.4677038e+09 0.14976704 0.048174929 -29.848558 53.618036 6566.9985 7.0189932e+09 0.14760028 0.046618043 -30.001372 53.459343 6568.8706 6.5928951e+09 0.14536345 0.044971347 -30.149026 53.300651 6570.7428 6.1953825e+09 0.14379723 0.044609828 -30.294919 53.141965 6572.6149 5.8180244e+09 0.14196007 0.043878012 -30.435945 52.983313 6574.4871 5.4721258e+09 0.13953223 0.042621075 -30.579778 52.821849 6576.3592 5.1485204e+09 0.13704765 0.040957954 -30.726716 52.657277 6578.2313 4.8920926e+09 0.13431169 0.038284309 -30.850919 52.517715 6580.1035 4.6804165e+09 0.13154002 0.036425126 -30.968464 52.385476 6581.9756 4.4728631e+09 0.12870345 0.035301178 -31.098891 52.233910 6583.8478 4.2426936e+09 0.12589732 0.034592569 -31.234042 52.075081 6585.7199 3.9848896e+09 0.12346534 0.033395229 -31.369224 51.910510 6587.5920 3.7556065e+09 0.12157907 0.033289543 -31.497004 51.756559 6589.4642 3.5816078e+09 0.11943257 0.032125080 -31.609652 51.624320 6591.3363 3.4351551e+09 0.11706779 0.028822407 -31.728762 51.482811 6593.2085 3.2797811e+09 0.11518991 0.026908411 -31.863944 51.318242 6595.0806 3.0988336e+09 0.11314282 0.025631930 -31.995668 51.157135 6596.9527 2.9008425e+09 0.11098921 0.025722942 -32.124941 50.998480 6598.8249 2.7368424e+09 0.10933301 0.025013334 -32.235199 50.858838 6600.6970 2.6019475e+09 0.10924271 0.026422841 -32.342950 50.721702 6602.5692 2.4715960e+09 0.10846546 0.027030925 -32.468844 50.566420 6604.4413 2.3522321e+09 0.10731606 0.026333314 -32.594437 50.410753 6606.3135 2.2377578e+09 0.10666075 0.026940696 -32.697289 50.273618 6608.1856 2.1395838e+09 0.10438255 0.023727464 -32.802166 50.134361 6610.0577 2.0457599e+09 0.10168059 0.024058145 -32.925563 49.975706 6611.9299 1.9491654e+09 0.099380089 0.024365468 -33.040809 49.825588 6613.8020 1.8569426e+09 0.098367805 0.023867853 -33.143661 49.688451 6615.6742 1.7679149e+09 0.096907894 0.023272274 -33.251730 49.543662 6617.5463 1.6787169e+09 0.095963697 0.023620374 -33.369281 49.384972 6619.4184 1.5916701e+09 0.095139319 0.024626878 -33.477224 49.240369 6621.2906 1.5191258e+09 0.094036593 0.024993131 -33.580075 49.103231 6623.1627 1.4524498e+09 0.092397638 0.024552113 -33.691920 48.949310 6625.0349 1.3823173e+09 0.090943543 0.025439211 -33.809471 48.784740 6626.9070 1.3155940e+09 0.088832052 0.025435290 -33.904704 48.649630 6628.7791 1.2492889e+09 0.087821923 0.026019438 -33.997742 48.517418 6630.6513 1.1879759e+09 0.086542056 0.025929907 -34.112062 48.357111 6632.5234 1.1217862e+09 0.085562573 0.026095109 -34.225526 48.197937 6634.3956 1.0557703e+09 0.084583747 0.026355698 -34.318584 48.065698 6636.2677 1.0047705e+09 0.083484854 0.026445788 -34.411641 47.932847 6638.1399 9.6514605e+08 0.082785195 0.025665549 -34.504697 47.795710 6640.0120 9.2701404e+08 0.082871618 0.025269184 -34.598813 47.656290 6641.8841 8.8366957e+08 0.083110375 0.025151303 -34.704583 47.491759 6643.7563 8.3454578e+08 0.082452378 0.025306807 -34.805503 47.339548 6645.6284 7.9030150e+08 0.081786130 0.025746076 -34.898559 47.207309 6647.5006 7.5533885e+08 0.080942646 0.026701328 -34.989951 47.073407 6649.3727 7.2518476e+08 0.080037105 0.027119934 -35.078110 46.936272 6651.2448 6.9189007e+08 0.079742157 0.026671804 -35.171524 46.790962 6653.1170 6.5031862e+08 0.079569010 0.027585391 -35.277319 46.626393 6654.9891 6.1637528e+08 0.078599156 0.027614848 -35.372593 46.478189 6656.8613 5.8611912e+08 0.076952405 0.028779348 -35.460752 46.341051 6658.7334 5.6208287e+08 0.075661653 0.031361796 -35.546184 46.206647 6660.6056 5.3940103e+08 0.074564678 0.032176415 -35.629428 46.074434 6662.4777 5.1533565e+08 0.073460219 0.032776258 -35.715192 45.939698 6664.3498 5.0106627e+08 0.072408397 0.030926060 -35.803351 45.802561 6666.2220 4.8608741e+08 0.072347675 0.026951850 -35.897048 45.652507 6668.0941 4.6847366e+08 0.071651485 0.027554061 -35.996967 45.487938 6669.9663 4.4607074e+08 0.071264734 0.027363288 -36.084067 45.348247 6671.8384 4.2719414e+08 0.071182325 0.026877296 -36.167327 45.216008 6673.7105 4.1032688e+08 0.070776938 0.028521883 -36.247024 45.080206 6675.5827 3.9759269e+08 0.069193969 0.030914406 -36.325387 44.943071 6677.4548 3.8677021e+08 0.067952022 0.031711640 -36.407111 44.805934 6679.3270 3.7406632e+08 0.067752444 0.029997583 -36.490373 44.668797 6681.1991 3.6264692e+08 0.068737646 0.029810109 -36.580563 44.514014 6683.0712 3.4279643e+08 0.069451066 0.031292994 -36.674581 44.349485 6684.9434 3.2330115e+08 0.069484943 0.032701965 -36.753846 44.215385 6686.8155 3.0562898e+08 0.068246837 0.034235572 -36.832210 44.083146 6688.6877 2.9163697e+08 0.065921131 0.033943928 -36.910574 43.946497 6690.5598 2.8024780e+08 0.064886792 0.033051709 -36.988938 43.809360 6692.4320 2.6682569e+08 0.064085374 0.032263728 -37.067301 43.672223 6694.3041 2.5795168e+08 0.063243916 0.030834823 -37.145664 43.535086 6696.1762 2.4500202e+08 0.063063331 0.029749008 -37.220027 43.401952 6698.0484 2.3177876e+08 0.062289965 0.030284220 -37.293493 43.269716 6699.9205 2.2295889e+08 0.060757773 0.030741057 -37.370744 43.133701 6701.7927 2.1301634e+08 0.059029238 0.032572503 -37.449092 42.996591 6703.6648 2.0927570e+08 0.058997017 0.035338778 -37.534634 42.839350 6705.5369 2.0067627e+08 0.058848329 0.037623180 -37.622329 42.675651 6707.4091 1.9128694e+08 0.058266618 0.040128226 -37.695795 42.538516 6709.2812 1.8203633e+08 0.057311063 0.040953671 -37.769262 42.401385 6711.1534 1.7267612e+08 0.055466706 0.040866721 -37.842727 42.269092 6713.0255 1.6598937e+08 0.053500787 0.043778878 -37.916192 42.136852 6714.8976 1.5569331e+08 0.051476908 0.047370894 -37.989659 41.999968 6716.7698 1.5121938e+08 0.049478531 0.049535190 -38.063125 41.862831 6718.6419 1.4340807e+08 0.047208262 0.050812173 -38.132139 41.725720 6720.5141 1.3916656e+08 0.046841082 0.050360202 -38.200693 41.588612 6722.3862 1.3391117e+08 0.046208737 0.050127744 -38.269259 41.455713 6724.2584 1.2735735e+08 0.043492977 0.047769234 -38.337826 41.323474 6726.1305 1.2414451e+08 0.040154438 0.040952544 -38.422511 41.164645 6728.0026 1.2172161e+08 0.039378972 0.039631838 -38.508302 41.003397 6729.8748 1.1867182e+08 0.038034445 0.040462365 -38.576869 40.866262 6731.7469 1.1286242e+08 0.036227123 0.043236533 -38.645437 40.729514 6733.6191 1.0650733e+08 0.034958283 0.047285370 -38.714005 40.597275 6735.4912 1.0299430e+08 0.035627529 0.049814880 -38.782389 40.464852 6737.3633 1.0107127e+08 0.036762164 0.055293005 -38.846047 40.327742 6739.2355 93550036. 0.036611208 0.063114740 -38.909720 40.190632 6741.1076 88316399. 0.034949661 0.066065647 -38.978251 40.053497 6742.9798 77344030. 0.030548865 0.070998140 -39.046818 39.916362 6744.8519 73316174. 0.026561381 0.078452342 -39.110716 39.783896 6746.7240 70567387. 0.021953264 0.070569388 -39.174387 39.651658 6748.5962 66598871. 0.018998456 0.070153482 -39.242523 39.514954 6750.4683 70819467. 0.014692191 0.072803828 -39.311091 39.377819 6752.3405 66364990. 0.0050161982 0.073740485 -39.386480 39.216814 6754.2126 65047876. -0.034790791 0.075871560 -39.460738 39.057702 6756.0848 62211612. -0.0045268281 0.074384999 -39.524396 38.925489 6757.9569 58581748. 0.068992414 0.073836127 -39.588056 38.792653