# # 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 = 59.337843 km # Date (UTC) = 2014-12-21T09:04:50.790 # Date (julian) = 2457012.87836563 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.1360 5.7237810e+10 0.038223797 0.030514948 -16.311908 49.962650 6496.9363 5.0765507e+10 0.047426827 0.031359364 -16.448666 49.845430 6499.7366 4.5554416e+10 0.056121757 0.032203780 -16.578596 49.728220 6502.5369 4.1416279e+10 0.064361462 0.033048196 -16.705569 49.611013 6505.3371 3.7852197e+10 0.072294293 0.033892612 -16.835716 49.493808 6508.1374 3.4660982e+10 0.080095654 0.034737028 -16.967572 49.376604 6510.9377 3.1852628e+10 0.088139235 0.035581444 -17.096487 49.259399 6513.7380 2.9243175e+10 0.096621591 0.036425860 -17.223459 49.142193 6516.5383 2.6796370e+10 0.10584833 0.037270276 -17.350441 49.024978 6519.3385 2.4692499e+10 0.11626825 0.038114693 -17.477431 48.907756 6522.1388 2.3092720e+10 0.12796844 0.038953600 -17.601934 48.790543 6524.9391 2.1424864e+10 0.13429991 0.039760575 -17.724023 48.673339 6527.7394 1.9632298e+10 0.13896344 0.041253258 -17.848356 48.556133 6530.5396 1.7796546e+10 0.14370778 0.044584183 -17.975328 48.438927 6533.3399 1.6162647e+10 0.14914167 0.047664042 -18.100289 48.319710 6536.1402 1.4759236e+10 0.15265946 0.047915936 -18.222377 48.197621 6538.9405 1.3593249e+10 0.15834015 0.049614641 -18.342693 48.077305 6541.7407 1.2585679e+10 0.16258234 0.051086311 -18.459915 47.960085 6544.5410 1.1655856e+10 0.16489855 0.052083237 -18.578679 47.842870 6547.3413 1.0792306e+10 0.16524432 0.053417155 -18.700768 47.725664 6550.1416 9.9760893e+09 0.16406122 0.055020809 -18.821543 47.608458 6552.9419 9.2290761e+09 0.16182089 0.055349702 -18.938748 47.491254 6555.7421 8.5279256e+09 0.15917923 0.054229796 -19.054872 47.374049 6558.5424 7.9006663e+09 0.15687830 0.052777106 -19.167193 47.256843 6561.3427 7.3428731e+09 0.15401419 0.051203813 -19.280366 47.138785 6564.1430 6.8390704e+09 0.15134321 0.048706807 -19.397587 47.016680 6566.9432 6.3709433e+09 0.14978102 0.046649297 -19.514189 46.895194 6569.7435 5.9231366e+09 0.14849909 0.044900816 -19.626511 46.777988 6572.5438 5.5190021e+09 0.14712973 0.043918739 -19.738832 46.660782 6575.3441 5.1409995e+09 0.14520143 0.042029497 -19.851154 46.543577 6578.1443 4.7979653e+09 0.14285731 0.038421674 -19.963475 46.426373 6580.9446 4.4877504e+09 0.14023669 0.035647785 -20.075798 46.309167 6583.7449 4.1933665e+09 0.13827903 0.034644631 -20.188120 46.191961 6586.5452 3.9284186e+09 0.13615662 0.033164249 -20.295654 46.069937 6589.3455 3.6864289e+09 0.13393576 0.032360627 -20.403106 45.947832 6592.1457 3.4594750e+09 0.13085695 0.027931977 -20.510545 45.830313 6594.9460 3.2424467e+09 0.12759798 0.025653210 -20.617983 45.713109 6597.7463 3.0405021e+09 0.12397634 0.025487228 -20.725422 45.595903 6600.5466 2.8471193e+09 0.12222229 0.026113505 -20.832861 45.478697 6603.3468 2.6731564e+09 0.11986086 0.026457946 -20.940311 45.357373 6606.1471 2.5125769e+09 0.11799252 0.027239601 -21.047763 45.235268 6608.9474 2.3587773e+09 0.11401504 0.023707322 -21.151332 45.117050 6611.7477 2.2229260e+09 0.11074655 0.024481664 -21.253887 44.999845 6614.5479 2.1064113e+09 0.10984140 0.023562979 -21.360081 44.882640 6617.3482 1.9961614e+09 0.10866820 0.023554701 -21.467519 44.765434 6620.1485 1.8811537e+09 0.10826869 0.024815052 -21.576663 44.634172 6622.9488 1.7641425e+09 0.10688539 0.024505460 -21.686545 44.496819 6625.7491 1.6455106e+09 0.10543322 0.026291450 -21.789997 44.377148 6628.5493 1.5472093e+09 0.10354279 0.025926129 -21.892551 44.259944 6631.3496 1.4613523e+09 0.10157228 0.025966279 -21.995117 44.138672 6634.1499 1.3830149e+09 0.099746441 0.026337776 -22.097686 44.016567 6636.9502 1.3068566e+09 0.097926786 0.026180766 -22.196422 43.898296 6639.7504 1.2320347e+09 0.097211488 0.025359851 -22.294092 43.781089 6642.5507 1.1704307e+09 0.097030727 0.025174233 -22.391764 43.663883 6645.3510 1.1109884e+09 0.095428866 0.025616111 -22.489436 43.546676 6648.1513 1.0591240e+09 0.093588351 0.027065544 -22.587106 43.426115 6650.9515 1.0060834e+09 0.092206191 0.026473073 -22.684777 43.304027 6653.7518 9.4747034e+08 0.091055642 0.027909515 -22.786752 43.175680 6656.5521 8.9224496e+08 0.088373438 0.028507992 -22.891156 43.043803 6659.3524 8.3687146e+08 0.085963691 0.031761093 -22.990042 42.923949 6662.1527 7.8731084e+08 0.083700668 0.032958624 -23.087714 42.806743 6664.9529 7.4571291e+08 0.082092655 0.028719358 -23.181615 42.685768 6667.7532 7.1230319e+08 0.080797906 0.027380123 -23.274403 42.563679 6670.5535 6.8024731e+08 0.079694522 0.027072212 -23.367190 42.445127 6673.3538 6.5029669e+08 0.078973775 0.027988292 -23.459978 42.327923 6676.1540 6.1783983e+08 0.076445971 0.031813000 -23.560613 42.200805 6678.9543 5.8157059e+08 0.075375738 0.030298328 -23.665001 42.068946 6681.7546 5.5060669e+08 0.076736838 0.030236269 -23.759466 41.945440 6684.5549 5.2191811e+08 0.077062356 0.032682249 -23.852266 41.823335 6687.3551 5.0038862e+08 0.075051928 0.034144832 -23.941105 41.705193 6690.1554 4.8031990e+08 0.072386897 0.033098052 -24.029009 41.587989 6692.9557 4.5548401e+08 0.071240636 0.031655534 -24.125278 41.455447 6695.7560 4.3039580e+08 0.070573068 0.029720610 -24.224172 41.318095 6698.5563 4.0788590e+08 0.069326513 0.030981337 -24.312724 41.199702 6701.3565 3.8802266e+08 0.067008363 0.031932575 -24.400628 41.082496 6704.1568 3.7052649e+08 0.066905966 0.036254553 -24.498350 40.952201 6706.9571 3.5103663e+08 0.066621882 0.040112132 -24.596439 40.821059 6709.7574 3.3538831e+08 0.065495221 0.040650826 -24.684356 40.698953 6712.5576 3.2196095e+08 0.062744936 0.042865303 -24.772555 40.576595 6715.3579 3.0521166e+08 0.060115825 0.047744652 -24.871449 40.444736 6718.1582 2.8789352e+08 0.057327210 0.050058783 -24.967078 40.315891 6720.9585 2.7173259e+08 0.056601456 0.050308711 -25.050098 40.198685 6723.7587 2.5795160e+08 0.054643615 0.049792108 -25.134758 40.078296 6726.5590 2.4518639e+08 0.050055098 0.040956409 -25.228158 39.940944 6729.3593 2.3244368e+08 0.049059136 0.040805946 -25.318051 39.810399 6732.1596 2.1910336e+08 0.046819912 0.043769586 -25.401070 39.693194 6734.9599 2.0885943e+08 0.046664449 0.049295848 -25.487102 39.571737 6737.7601 1.9881375e+08 0.048799808 0.056556973 -25.580502 39.439878 6740.5604 1.8960313e+08 0.048474046 0.065007718 -25.673908 39.305427 6743.3607 1.8285467e+08 0.044005867 0.073480591 -25.767321 39.168054 6746.1610 1.7338220e+08 0.040905616 0.077115951 -25.857154 39.034268 6748.9612 1.6472843e+08 0.037552315 0.072073993 -25.945059 38.902411 6751.7615 1.5804936e+08 0.032922299 0.074033643 -26.028910 38.782715 6754.5618 1.5213765e+08 0.030864982 0.075310043 -26.111930 38.665509 6757.3621 1.4739339e+08 0.028087560 0.075641281 -26.198773 38.532541 6760.1623 1.3941278e+08 0.029180215 0.076370852 -26.286680 38.395188 6762.9626 1.3134264e+08 0.034350706 0.076498061 -26.374585 38.263124 6765.7629 1.2626715e+08 0.037181887 0.079670463 -26.462491 38.131266 6768.5632 1.2162633e+08 0.033106603 0.082882457 -26.550396 37.999407 6771.3635 1.1563016e+08 0.027711177 0.090186668 -26.638301 37.867548 6774.1637 1.0858832e+08 0.022630407 0.096978570 -26.726207 37.735689 6776.9640 1.0459535e+08 0.017511833 0.10377047 -26.811361 37.601064 6779.7643 99801310. 0.012402513 0.11056238 -26.893784 37.463691 6782.5646 96199432. 0.0072829986 0.11735428 -26.979947 37.330079 6785.3648 91041996. 0.0021677756 0.12414618 -27.067852 37.198221 6788.1651 87090779. -0.0029623627 0.13093808 -27.151023 37.066363 6790.9654 87286490. -0.0080788511 0.13772999 -27.233663 36.934504 6793.7657 83696836. -0.013169941 0.14452189 -27.321568 36.802647 6796.5659 80743156. -0.018224235 0.15131379 -27.408256 36.669573 6799.3662 78151224. -0.023246837 0.15810569 -27.490669 36.532221 6802.1665 73133359. -0.028287719 0.16489760 -27.573080 36.397073 6804.9668 69137396. -0.033328970 0.17168950 -27.655492 36.265213 6807.7670 63857217. -0.038417330 0.17848140 -27.734710 36.133355 6810.5673 61368899. -0.043463601 0.18527330 -27.811627 36.001498 6813.3676 62614468. -0.048408277 0.19206521 -27.901688 35.855300 6816.1679 60904112. -0.053443743 0.19885711 -27.993889 35.707776 6818.9682 57658791. -0.058554524 0.20564901 -28.076300 35.575920 6821.7684 54272204. -0.063717807 0.21244091 -28.156797 35.442148 6824.5687 54288332. -0.068762523 0.21923282 -28.233715 35.304796 6827.3690 53282005. -0.073904962 0.22602472 -28.319756 35.160393 6830.1693 50096428. -0.079282111 0.23281662 -28.413942 35.009692 6832.9695 46291913. -0.084926958 0.23960852 -28.491970 34.876622 6835.7698 41578200. -0.091107924 0.24640043 -28.570157 34.742586 6838.5701 40053036. -0.097593400 0.25319233 -28.658065 34.591889 6841.3704 42270129. -0.10511618 0.25998423 -28.740231 34.451033 6844.1706 43063895. -0.12729549 0.26677613 -28.817159 34.319155 6846.9709 44512176. -0.11650172 0.27356804 -28.901807 34.174045 6849.7712 41424088. -0.089884443 0.28035994 -28.988499 34.025430