# # 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 = 50.182507 km # Date (UTC) = 2014-01-29T05:22:31.564 # Date (julian) = 2456686.72397644 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.6722 6.4669515e+10 0.038095347 0.031882818 48.600747 61.609000 6500.4603 6.1298565e+10 0.044602603 0.032422024 48.369376 61.469865 6502.2485 5.7511603e+10 0.051281404 0.032961229 48.139213 61.329522 6504.0366 5.3540736e+10 0.058181286 0.033500435 47.909103 61.189212 6505.8247 4.9450535e+10 0.065309996 0.034039640 47.680227 61.050138 6507.6129 4.5564034e+10 0.072747233 0.034578846 47.455679 60.915407 6509.4010 4.2137014e+10 0.080578897 0.035118051 47.231129 60.778205 6511.1891 3.9314274e+10 0.088932692 0.035657256 47.006579 60.637862 6512.9772 3.7108642e+10 0.097913153 0.036196462 46.789461 60.497540 6514.7654 3.4642485e+10 0.10713226 0.036735667 46.576189 60.357230 6516.5535 3.1731802e+10 0.11639064 0.037274873 46.316076 60.179949 6518.3416 2.8927786e+10 0.12590677 0.037814078 46.089612 60.027116 6520.1298 2.6673781e+10 0.13597402 0.038353283 45.911852 59.910168 6521.9179 2.5149977e+10 0.14675316 0.038892489 45.726438 59.785861 6523.7060 2.3859488e+10 0.15296157 0.039354096 45.524343 59.645518 6525.4941 2.2420416e+10 0.15888973 0.039725820 45.322274 59.502199 6527.2823 2.0881513e+10 0.16450112 0.040921401 45.120228 59.356276 6529.0704 1.9488584e+10 0.16819169 0.042347921 44.918144 59.214545 6530.8585 1.8252087e+10 0.17165429 0.045030618 44.716048 59.074200 6532.6467 1.7118434e+10 0.17513292 0.047224404 44.519400 58.928412 6534.4348 1.6046383e+10 0.17560293 0.048066183 44.323988 58.782462 6536.2229 1.4970125e+10 0.17411362 0.047989946 44.133167 58.636539 6538.0110 1.3865152e+10 0.17424030 0.049162057 43.942326 58.492886 6539.7992 1.2785973e+10 0.17361256 0.050611001 43.751459 58.352543 6541.5873 1.1926225e+10 0.17156323 0.051136073 43.583423 58.223909 6543.3754 1.1274236e+10 0.17007209 0.051480426 43.429050 58.102283 6545.1636 1.0729731e+10 0.16913563 0.052457032 43.259610 57.968785 6546.9517 1.0187164e+10 0.16778522 0.053247607 43.074358 57.822827 6548.7398 9.5560901e+09 0.16610709 0.053888579 42.893102 57.676894 6550.5279 8.9502929e+09 0.16532817 0.055117551 42.713506 57.530973 6552.3161 8.4694754e+09 0.16448384 0.055507212 42.565888 57.407519 6554.1042 8.0670201e+09 0.16272355 0.054834567 42.420871 57.285891 6555.8923 7.6890838e+09 0.16122792 0.054103598 42.253022 57.145114 6557.6805 7.3156446e+09 0.16013257 0.053439597 42.079238 56.999360 6559.4686 6.9779904e+09 0.15814359 0.052334292 41.934149 56.877673 6561.2567 6.6856412e+09 0.15582363 0.051246179 41.789132 56.756047 6563.0448 6.4068602e+09 0.15394617 0.049876498 41.623841 56.608458 6564.8330 6.0616978e+09 0.15206679 0.048394096 41.455465 56.457404 6566.6211 5.6708088e+09 0.15014991 0.046831532 41.287052 56.311445 6568.4092 5.3240945e+09 0.14849409 0.045395487 41.128627 56.172907 6570.1974 5.0553414e+09 0.14720293 0.044835758 40.992968 56.051282 6571.9855 4.8237765e+09 0.14563398 0.044234121 40.852770 55.924648 6573.7736 4.5840545e+09 0.14373013 0.043036677 40.689971 55.773077 6575.5617 4.3360235e+09 0.14246720 0.041811107 40.539461 55.633071 6577.3499 4.1094932e+09 0.14100730 0.039670814 40.408505 55.511467 6579.1380 3.9372920e+09 0.13889772 0.036994635 40.277543 55.388699 6580.9261 3.8111776e+09 0.13714665 0.035664880 40.146560 55.262397 6582.7143 3.6715959e+09 0.13592148 0.035099426 40.013309 55.133930 6584.5024 3.5128482e+09 0.13437612 0.034241844 39.861738 54.987972 6586.2905 3.3583009e+09 0.13281264 0.033167541 39.718474 54.848475 6588.0786 3.2067791e+09 0.13176837 0.033353669 39.592171 54.722170 6589.8668 3.0873929e+09 0.13008441 0.031326389 39.465868 54.596759 6591.6549 2.9920138e+09 0.12779685 0.028462936 39.339564 54.475134 6593.4430 2.8891597e+09 0.12584992 0.026690342 39.212212 54.351912 6595.2312 2.7667282e+09 0.12375234 0.025647542 39.066289 54.200377 6597.0193 2.6305133e+09 0.12165540 0.025716642 38.926965 54.055695 6598.8074 2.4980819e+09 0.12000465 0.025021679 38.805339 53.929390 6600.5955 2.3912323e+09 0.11977750 0.026214193 38.684339 53.803712 6602.3837 2.3197057e+09 0.11873566 0.027189227 38.567391 53.682087 6604.1718 2.2381499e+09 0.11709770 0.026173283 38.450389 53.560392 6605.9599 2.1411820e+09 0.11651037 0.027470344 38.310188 53.409003 6607.7481 2.0365273e+09 0.11443304 0.024229871 38.174877 53.262867 6609.5362 1.9330591e+09 0.11159946 0.023865203 38.057951 53.136587 6611.3243 1.8496740e+09 0.10899370 0.024751642 37.941383 53.010306 6613.1124 1.7817433e+09 0.10811362 0.023614845 37.829112 52.884001 6614.9006 1.7193811e+09 0.10715352 0.023320037 37.716841 52.757697 6616.6887 1.6615445e+09 0.10597169 0.023390390 37.604572 52.631393 6618.4768 1.6115359e+09 0.10546681 0.024130855 37.492302 52.505088 6620.2650 1.5587744e+09 0.10491621 0.024852579 37.380032 52.378784 6622.0531 1.5035302e+09 0.10385313 0.024743864 37.267760 52.252480 6623.8412 1.4362702e+09 0.10231217 0.024803481 37.144310 52.113133 6625.6293 1.3618260e+09 0.10158347 0.026148594 37.015193 51.967176 6627.4175 1.2919595e+09 0.099977831 0.025478071 36.905068 51.838559 6629.2056 1.2329401e+09 0.099017778 0.026071933 36.797476 51.712255 6630.9937 1.1875614e+09 0.097419252 0.025930751 36.689900 51.585969 6632.7819 1.1388673e+09 0.096260072 0.026126096 36.582329 51.459690 6634.5700 1.0928127e+09 0.094852493 0.026368420 36.477583 51.333396 6636.3581 1.0506110e+09 0.093355707 0.026410684 36.374668 51.207091 6638.1462 1.0101509e+09 0.092318570 0.025665271 36.271752 51.080787 6639.9344 9.7827804e+08 0.091918402 0.025294111 36.168836 50.954481 6641.7225 9.4290331e+08 0.091734914 0.025150754 36.065921 50.828176 6643.5106 9.0450752e+08 0.090749905 0.025269716 35.963008 50.701872 6645.2988 8.6944808e+08 0.089631885 0.025591639 35.860999 50.575568 6647.0869 8.3073262e+08 0.088320022 0.026483523 35.762761 50.449266 6648.8750 7.9587659e+08 0.086971728 0.027550019 35.664524 50.322963 6650.6631 7.6149560e+08 0.086512441 0.026407048 35.566288 50.196659 6652.4513 7.3069481e+08 0.086064073 0.027374683 35.468051 50.070354 6654.2394 7.0012508e+08 0.085395606 0.027934241 35.369833 49.944073 6656.0275 6.7715831e+08 0.083873195 0.028047576 35.271617 49.817794 6657.8157 6.5378891e+08 0.082715427 0.029847242 35.173385 49.687846 6659.6038 6.3021097e+08 0.081457377 0.031708649 35.075149 49.556863 6661.3919 6.0937052e+08 0.080241089 0.032734558 34.979916 49.428885 6663.1800 5.8561225e+08 0.079285177 0.032433320 34.886357 49.302582 6664.9682 5.7020248e+08 0.078748591 0.028663607 34.792797 49.176278 6666.7563 5.5769532e+08 0.078297810 0.027055969 34.699238 49.049974 6668.5444 5.4837842e+08 0.077205436 0.027952551 34.605679 48.923669 6670.3326 5.3450997e+08 0.076923355 0.027174566 34.512120 48.797365 6672.1207 5.2043439e+08 0.076527825 0.026949548 34.419634 48.671061 6673.9088 4.9770578e+08 0.075806213 0.028818409 34.330754 48.544756 6675.6969 4.7978692e+08 0.073906417 0.031133249 34.241875 48.418454 6677.4851 4.6238306e+08 0.072565906 0.031668645 34.153013 48.292175 6679.2732 4.4682041e+08 0.072071927 0.030042015 34.064151 48.165896 6681.0613 4.3665981e+08 0.072766189 0.029704405 33.975270 48.039593 6682.8495 4.2236593e+08 0.073159176 0.031073557 33.886388 47.913289 6684.6376 4.1353353e+08 0.072877797 0.032686446 33.797508 47.786985 6686.4257 4.0006590e+08 0.071801161 0.034008768 33.708628 47.660680 6688.2138 3.8634952e+08 0.069579264 0.033834551 33.619747 47.531205 6690.0020 3.7188165e+08 0.068034532 0.033115638 33.530866 47.400222 6691.7901 3.5787651e+08 0.067162519 0.032814853 33.444513 47.271767 6693.5782 3.4736583e+08 0.066507529 0.031405722 33.360310 47.145463 6695.3664 3.3443546e+08 0.066433805 0.029792179 33.276107 47.019158 6697.1545 3.2069405e+08 0.066104756 0.030110815 33.191904 46.892854 6698.9426 3.0867333e+08 0.065179552 0.031511656 33.107706 46.766556 6700.7307 2.9383622e+08 0.063951118 0.031209727 33.023520 46.640277 6702.5189 2.8171696e+08 0.063467648 0.033291047 32.939924 46.513995 6704.3070 2.7436801e+08 0.063828068 0.036328304 32.860399 46.387691 6706.0951 2.6871884e+08 0.063905981 0.038611959 32.780873 46.261387 6707.8833 2.6484556e+08 0.063741374 0.040060302 32.696721 46.130457 6709.6714 2.5788565e+08 0.063008740 0.040705513 32.612519 45.999475 6711.4595 2.4533903e+08 0.061619725 0.041215028 32.532298 45.872474 6713.2476 2.3539835e+08 0.060197198 0.044582276 32.452774 45.746169 6715.0358 2.2101704e+08 0.058943333 0.047415169 32.373248 45.619865 6716.8239 2.0745822e+08 0.057588921 0.049614881 32.293723 45.493560 6718.6120 2.0030839e+08 0.055898258 0.050765594 32.214198 45.367256 6720.4002 1.9461668e+08 0.055876088 0.050373402 32.134674 45.240952 6722.1883 1.9228236e+08 0.055741749 0.050372441 32.057206 45.114659 6723.9764 1.8681396e+08 0.054070187 0.049913504 31.982375 44.988382 6725.7645 1.7958356e+08 0.050604159 0.041098450 31.906134 44.862097 6727.5527 1.7531442e+08 0.049719387 0.040224077 31.826609 44.735792 6729.3408 1.7199522e+08 0.049090718 0.040818279 31.747844 44.608728 6731.1289 1.6362399e+08 0.047702404 0.042006605 31.672998 44.477745 6732.9171 1.5322408e+08 0.046899116 0.043909035 31.598415 44.347323 6734.7052 1.4342342e+08 0.046824280 0.049311171 31.534262 44.239066 6736.4933 1.3670820e+08 0.048227363 0.052219988 31.470109 44.130809 6738.2814 1.3588426e+08 0.048816198 0.058870531 31.400281 44.012975 6740.0696 1.3617232e+08 0.048154806 0.064169202 31.325434 43.886671 6741.8577 1.3212864e+08 0.046023397 0.068204885 31.252426 43.760367 6743.6458 1.2616311e+08 0.041841651 0.075404142 31.182256 43.634062 6745.4340 1.1957666e+08 0.039794732 0.078749316 31.110892 43.507758 6747.2221 1.1576032e+08 0.034834630 0.067284708 31.036045 43.381454 6749.0102 1.1437642e+08 0.034373226 0.072275138 30.961750 43.254603 6750.7983 1.1184825e+08 0.031032363 0.073367323 30.891596 43.123647 6752.5865 1.0894447e+08 0.027773937 0.073455826 30.821441 42.992692 6754.3746 1.0376242e+08 0.025954718 0.075611077 30.751272 42.866292 6756.1627 1.0250142e+08 0.023169010 0.074585618 30.681104 42.739988 6757.9509 99494014. 0.022098023 0.073854477 30.610934 42.613683 6759.7390 94631229. 0.021943009 0.075998282 30.540765 42.487377 6761.5271 89929970. 0.023144822 0.078011774 30.470596 42.361073 6763.3152 86333703. 0.026061654 0.077397824 30.400427 42.234768 6765.1034 83336531. 0.027201071 0.079550063 30.332908 42.108464 6766.8915 80921733. 0.026250193 0.081730322 30.267416 41.982160 6768.6796 76554015. 0.021159250 0.083301466 30.199920 41.855856 6770.4678 71962933. 0.015905843 0.088014202 30.129751 41.729551 6772.2559 69429473. 0.010212239 0.092351200 30.060947 41.601894 6774.0440 67899230. 0.0017431304 0.096688198 29.995469 41.470938 6775.8321 65277446. -0.033706178 0.10102520 29.929990 41.340694 6777.6203 58116418. -0.012064105 0.10536219 29.864498 41.214390 6779.4084 51677041. 0.052939110 0.10969919 29.799006 41.088085