# # 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 = 46.996451 km # Date (UTC) = 2012-01-31T10:42:25.879 # Date (julian) = 2455957.94613286 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.9766 1.2531543e+11 0.076914225 0.034085437 -34.869475 60.156927 6507.7542 1.1352341e+11 0.085367340 0.034621465 -35.125237 59.977672 6509.5318 1.0030987e+11 0.093783072 0.035157492 -35.379717 59.796315 6511.3094 8.8279937e+10 0.10229559 0.035693520 -35.630277 59.614939 6513.0870 7.7995966e+10 0.11094499 0.036229547 -35.874371 59.433609 6514.8646 6.8577517e+10 0.11965137 0.036765575 -36.118514 59.252247 6516.6421 6.0567715e+10 0.12853410 0.037301603 -36.352134 59.078701 6518.4197 5.4253367e+10 0.13772206 0.037837630 -36.547411 58.933637 6520.1973 4.9227122e+10 0.14718519 0.038373658 -36.760435 58.770242 6521.9749 4.4876467e+10 0.15684022 0.038909685 -36.997618 58.581894 6523.7525 4.0942993e+10 0.16157255 0.039365618 -37.182320 58.436355 6525.5301 3.7455737e+10 0.16620773 0.039721717 -37.374211 58.284080 6527.3077 3.4330648e+10 0.17072682 0.040939850 -37.597383 58.102754 6529.0853 3.0910138e+10 0.17307998 0.042371613 -37.825938 57.916052 6530.8629 2.7476959e+10 0.17534230 0.045036686 -38.037214 57.742015 6532.6405 2.4622640e+10 0.17831472 0.047219221 -38.210173 57.596951 6534.4180 2.2734192e+10 0.17906532 0.048061499 -38.383154 57.448864 6536.1956 2.1565385e+10 0.17829258 0.047965537 -38.556153 57.298187 6537.9732 2.0345633e+10 0.17895605 0.049144056 -38.761452 57.119380 6539.7508 1.9010701e+10 0.17841097 0.050552465 -38.962410 56.942833 6541.5284 1.7637465e+10 0.17619841 0.051155173 -39.129790 56.792190 6543.3060 1.6371941e+10 0.17440211 0.051462202 -39.318994 56.625538 6545.0836 1.5345676e+10 0.17312992 0.052456316 -39.524136 56.446837 6546.8612 1.4360014e+10 0.17120278 0.053173131 -39.685975 56.296159 6548.6388 1.3537351e+10 0.16926700 0.053858402 -39.846155 56.145491 6550.4164 1.2997396e+10 0.16797785 0.055089610 -40.002378 55.994850 6552.1939 1.2561884e+10 0.16647738 0.055537952 -40.161425 55.844190 6553.9715 1.2061661e+10 0.16405340 0.054846691 -40.323263 55.693514 6555.7491 1.1417836e+10 0.16215518 0.054223924 -40.503963 55.516037 6557.5267 1.0743994e+10 0.16046864 0.053535963 -40.683395 55.338155 6559.3043 1.0134986e+10 0.15786559 0.052352834 -40.839615 55.187514 6561.0819 9.6012465e+09 0.15500419 0.051332327 -40.993144 55.036854 6562.8595 9.0204129e+09 0.15281915 0.050062076 -41.143822 54.886176 6564.6371 8.3599744e+09 0.15039532 0.048482877 -41.290631 54.731628 6566.4147 7.7090562e+09 0.14809632 0.046948312 -41.435730 54.575370 6568.1923 7.1470920e+09 0.14630967 0.045594937 -41.580795 54.424176 6569.9698 6.6693634e+09 0.14464176 0.044915546 -41.725860 54.273530 6571.7474 6.2249536e+09 0.14248317 0.044299137 -41.870958 54.122852 6573.5250 5.8081207e+09 0.14000566 0.043236164 -42.014285 53.972174 6575.3026 5.4338944e+09 0.13763525 0.042071093 -42.153801 53.821496 6577.0802 5.1312495e+09 0.13490888 0.040094395 -42.293318 53.667886 6578.8578 4.9107922e+09 0.13179144 0.037295061 -42.432835 53.511627 6580.6354 4.7439254e+09 0.12951982 0.035933569 -42.572327 53.359489 6582.4130 4.5972263e+09 0.12768043 0.035181414 -42.711810 53.208848 6584.1906 4.4317897e+09 0.12564256 0.034411705 -42.846070 53.058172 6585.9682 4.2243055e+09 0.12380136 0.033196758 -42.980005 52.906660 6587.7457 3.9979098e+09 0.12261347 0.033323597 -43.113942 52.750402 6589.5233 3.7723674e+09 0.12084683 0.032007734 -43.239889 52.605126 6591.3009 3.5890822e+09 0.11857763 0.028862355 -43.351475 52.479592 6593.0785 3.4480752e+09 0.11659667 0.027029228 -43.466526 52.347707 6594.8561 3.3079493e+09 0.11432897 0.025702564 -43.594881 52.191447 6596.6337 3.1479600e+09 0.11180696 0.025724393 -43.723236 52.037503 6598.4113 2.9633603e+09 0.11009496 0.025210805 -43.851593 51.886828 6600.1889 2.7776023e+09 0.10963979 0.025378161 -43.976472 51.732673 6601.9665 2.6158648e+09 0.10897826 0.027500839 -44.099246 51.576413 6603.7441 2.4657074e+09 0.10750829 0.026222797 -44.221996 51.424821 6605.5216 2.3363893e+09 0.10696160 0.027102659 -44.343952 51.274969 6607.2992 2.2333083e+09 0.10524154 0.025116124 -44.446261 51.144759 6609.0768 2.1454353e+09 0.10220233 0.023728751 -44.548569 51.014550 6610.8544 2.0663162e+09 0.099307990 0.024819350 -44.669056 50.866158 6612.6320 1.9696184e+09 0.097894915 0.023848544 -44.791289 50.714946 6614.4096 1.8666419e+09 0.096596346 0.023658299 -44.908457 50.558726 6616.1872 1.7699965e+09 0.094985752 0.023311677 -45.019692 50.410413 6617.9648 1.6998997e+09 0.094339205 0.023759117 -45.117349 50.280202 6619.7424 1.6442527e+09 0.093681432 0.024705034 -45.218008 50.146846 6621.5200 1.5863479e+09 0.092883843 0.024917106 -45.335202 49.996170 6623.2975 1.5114218e+09 0.091771341 0.024602061 -45.450376 49.843474 6625.0751 1.4204611e+09 0.091057163 0.025487260 -45.561991 49.687213 6626.8527 1.3397930e+09 0.089580073 0.025504455 -45.663002 49.545798 6628.6303 1.2736914e+09 0.088888968 0.025959008 -45.756009 49.415589 6630.4079 1.2181996e+09 0.087818750 0.025929307 -45.856809 49.276808 6632.1855 1.1642934e+09 0.086620957 0.026054587 -45.968394 49.126166 6633.9631 1.1193192e+09 0.085440857 0.026320397 -46.068328 48.988339 6635.7407 1.0804609e+09 0.084295420 0.026510863 -46.161336 48.858129 6637.5183 1.0392787e+09 0.083369630 0.025907582 -46.260554 48.715500 6639.2959 9.9342079e+08 0.082737212 0.025522330 -46.366588 48.559240 6641.0734 9.4096471e+08 0.083354095 0.025148550 -46.460515 48.424006 6642.8510 9.0227092e+08 0.083015011 0.025186522 -46.548872 48.298447 6644.6286 8.6311739e+08 0.082105543 0.025411547 -46.646663 48.156498 6646.4062 8.2068262e+08 0.081168082 0.026130416 -46.752669 48.000276 6648.1838 7.7923324e+08 0.080349225 0.027087323 -46.845577 47.863360 6649.9614 7.4412266e+08 0.079723675 0.026308455 -46.933935 47.733150 6651.7390 7.1312425e+08 0.079133783 0.027050489 -47.029450 47.587525 6653.5166 6.8239034e+08 0.078598403 0.027789405 -47.129902 47.431267 6655.2942 6.5277354e+08 0.077326672 0.027731765 -47.216959 47.299565 6657.0718 6.2099629e+08 0.075769201 0.028984343 -47.300666 47.174005 6658.8493 5.9713258e+08 0.074518067 0.031567406 -47.395232 47.028529 6660.6269 5.6386467e+08 0.073709639 0.032195850 -47.495658 46.872307 6662.4045 5.3992355e+08 0.072797617 0.032817310 -47.581752 46.738382 6664.1821 5.2152202e+08 0.071855863 0.031539743 -47.665460 46.608171 6665.9597 4.9962494e+08 0.072114127 0.026974622 -47.757059 46.459549 6667.7373 4.7845166e+08 0.071694213 0.027374278 -47.851931 46.303292 6669.5149 4.5107937e+08 0.071113383 0.027826881 -47.932332 46.170865 6671.2925 4.3234996e+08 0.071205992 0.026869516 -48.011387 46.040654 6673.0701 4.1985676e+08 0.070920977 0.027564002 -48.090444 45.914000 6674.8477 4.0640627e+08 0.069698383 0.029669843 -48.169501 45.788442 6676.6252 3.8766263e+08 0.067878855 0.032116690 -48.258256 45.644050 6678.4028 3.6617989e+08 0.067405107 0.030667181 -48.353103 45.487828 6680.1804 3.4936449e+08 0.067910230 0.029480377 -48.434973 45.352984 6681.9580 3.3773195e+08 0.068503748 0.030392332 -48.514030 45.222775 6683.7356 3.3388771e+08 0.068638549 0.032266616 -48.589964 45.092565 6685.5132 3.3014818e+08 0.068233239 0.033246897 -48.664370 44.962356 6687.2908 3.1944667e+08 0.066512053 0.034180727 -48.746532 44.818570 6689.0684 3.0804991e+08 0.064112525 0.033954477 -48.835824 44.662309 6690.8460 2.9653360e+08 0.063387291 0.033018915 -48.914249 44.528454 6692.6236 2.9006641e+08 0.062571420 0.032041233 -48.988640 44.402920 6694.4011 2.8599785e+08 0.061750677 0.030698802 -49.063039 44.274681 6696.1787 2.8152845e+08 0.061519637 0.029750046 -49.137445 44.144471 6697.9563 2.7351395e+08 0.060860712 0.030212290 -49.218222 44.003112 6699.7339 2.6380669e+08 0.059599943 0.030913240 -49.307513 43.846854 6701.5115 2.5157036e+08 0.058171494 0.032159968 -49.384376 43.707166 6703.2891 2.4004910e+08 0.058310302 0.034398640 -49.454132 43.576955 6705.0667 2.3235065e+08 0.058492243 0.036787157 -49.523887 43.446744 6706.8443 2.2946796e+08 0.058161954 0.039915798 -49.593642 43.316535 6708.6219 2.2496821e+08 0.057773631 0.040720766 -49.668071 43.179472 6710.3995 2.1579110e+08 0.056625618 0.040574683 -49.751762 43.028828 6712.1770 2.0727480e+08 0.054878565 0.042158671 -49.827884 42.889283 6713.9546 1.9447516e+08 0.053101847 0.047139331 -49.897639 42.759073 6715.7322 1.8901960e+08 0.051746732 0.048127486 -49.967394 42.628864 6717.5098 1.8412845e+08 0.050022855 0.049842734 -50.037150 42.498654 6719.2874 1.7938167e+08 0.048320421 0.051096783 -50.110288 42.362131 6721.0650 1.7526511e+08 0.048753722 0.050323482 -50.193998 42.205872 6722.8426 1.6524608e+08 0.047944008 0.049563550 -50.269328 42.063441 6724.6202 1.5829900e+08 0.044839225 0.044747806 -50.334433 41.937881 6726.3978 1.4856649e+08 0.042606637 0.040954955 -50.399534 41.810933 6728.1754 1.4370785e+08 0.042211632 0.039876635 -50.464625 41.680750 6729.9529 1.3934420e+08 0.041095098 0.040410266 -50.530413 41.550562 6731.7305 1.3540241e+08 0.039727384 0.043203924 -50.600167 41.420353 6733.5081 1.3206884e+08 0.038940276 0.046683064 -50.669930 41.290066 6735.2857 1.2710465e+08 0.039664168 0.049596740 -50.742469 41.133911 6737.0633 1.2285047e+08 0.041101976 0.054337224 -50.813477 40.983043 6738.8409 1.1800867e+08 0.041825431 0.061950604 -50.878582 40.852833 6740.6185 1.1604378e+08 0.041211838 0.065106937 -50.943687 40.722887 6742.3961 1.0997751e+08 0.038924472 0.069575862 -51.008793 40.597327 6744.1737 1.0534812e+08 0.035175412 0.077927737 -51.073900 40.471767 6745.9513 1.0278951e+08 0.034520431 0.078966786 -51.134778 40.342017 6747.7288 97825026. 0.030432997 0.067110248 -51.195220 40.211834 6749.5064 95013196. 0.029239622 0.072139271 -51.269023 40.061952 6751.2840 91504488. 0.027081137 0.073831758 -51.347152 39.905694 6753.0616 88525835. 0.025068255 0.073176687 -51.408251 39.779016 6754.8392 83584489. 0.023559973 0.074863924 -51.468706 39.653456 6756.6168 79524188. 0.021179706 0.075754014 -51.529162 39.524113 6758.3944 77028126. 0.021345466 0.074539302 -51.589618 39.393901 6760.1720 73062116. 0.021428368 0.076389220 -51.658078 39.246449 6761.9496 72464270. 0.024310795 0.078046677 -51.730609 39.090229 6763.7272 65484198. 0.025509657 0.078652331 -51.792627 38.956651 6765.5047 60979237. 0.023790281 0.079623336 -51.853080 38.826442 6767.2823 58796587. 0.0040614502 0.081659623 -51.913535 38.699581 6769.0599 56048898. 0.014707359 0.084599606 -51.973990 38.574021 6770.8375 56699109. 0.045264157 0.088911044 -52.031795 38.445812