# # 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 = 43.805516 km # Date (UTC) = 2015-01-19T09:00:57.108 # Date (julian) = 2457041.87566097 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.5196 9.6704954e+10 0.036047672 0.031233714 -12.099308 54.292246 6498.7241 8.5573848e+10 0.043306729 0.031898467 -12.247601 54.168668 6500.9286 7.5553724e+10 0.050538591 0.032563220 -12.395894 54.040892 6503.1331 6.7280241e+10 0.057876177 0.033227972 -12.544187 53.912370 6505.3375 6.0369501e+10 0.065469733 0.033892725 -12.688398 53.787932 6507.5420 5.4622264e+10 0.073488900 0.034557478 -12.831749 53.664353 6509.7465 4.9532661e+10 0.082006568 0.035222231 -12.975099 53.536807 6511.9509 4.5000828e+10 0.091111246 0.035886984 -13.118450 53.408287 6514.1554 4.0868129e+10 0.10087165 0.036551737 -13.261800 53.283622 6516.3599 3.7039592e+10 0.11130736 0.037216490 -13.405150 53.160044 6518.5644 3.3582685e+10 0.12249381 0.037881243 -13.544759 53.032724 6520.7688 3.0439659e+10 0.13441271 0.038545996 -13.683167 52.904201 6522.9733 2.7599862e+10 0.14434909 0.039172122 -13.817947 52.779308 6525.1778 2.5119642e+10 0.15179504 0.039761925 -13.951411 52.655730 6527.3823 2.2983811e+10 0.15816185 0.040993989 -14.088389 52.528638 6529.5867 2.1042749e+10 0.16390629 0.043170382 -14.226797 52.400118 6531.7912 1.9294850e+10 0.16926157 0.046380274 -14.358404 52.271596 6533.9957 1.7653587e+10 0.17270878 0.047942716 -14.486924 52.143074 6536.2001 1.6175096e+10 0.17403080 0.047969573 -14.618732 52.014554 6538.4046 1.4872741e+10 0.17547804 0.049353706 -14.752196 51.886034 6540.6091 1.3674668e+10 0.17478457 0.051141850 -14.882488 51.760685 6542.8136 1.2614373e+10 0.17261657 0.051311110 -15.011009 51.637107 6545.0180 1.1677742e+10 0.17101288 0.052455728 -15.139530 51.510471 6547.2225 1.0845672e+10 0.16892545 0.053371979 -15.268051 51.381951 6549.4270 1.0079763e+10 0.16698794 0.054401404 -15.393626 51.253430 6551.6314 9.3813614e+09 0.16551806 0.055457400 -15.517204 51.124908 6553.8359 8.7330732e+09 0.16354509 0.054914860 -15.643613 50.996386 6556.0404 8.1371282e+09 0.16152337 0.054007187 -15.772135 50.867866 6558.2449 7.5748615e+09 0.15991189 0.053030647 -15.895221 50.739345 6560.4493 7.0288553e+09 0.15755858 0.051869171 -16.013855 50.610823 6562.6538 6.5079001e+09 0.15523916 0.050257776 -16.135094 50.482301 6564.8583 6.0251560e+09 0.15307340 0.048382622 -16.258672 50.353781 6567.0628 5.6216479e+09 0.15109776 0.046564124 -16.372289 50.233354 6569.2672 5.3093735e+09 0.14906463 0.044869817 -16.476092 50.120899 6571.4717 5.0477375e+09 0.14731779 0.044374444 -16.582738 50.005366 6573.6762 4.7889987e+09 0.14479937 0.043114866 -16.701372 49.876846 6575.8806 4.5137616e+09 0.14213229 0.041491140 -16.819173 49.748325 6578.0851 4.2374474e+09 0.13924599 0.038515197 -16.932866 49.619803 6580.2896 3.9839263e+09 0.13602124 0.036253126 -17.046559 49.491281 6582.4941 3.7476720e+09 0.13288156 0.035159345 -17.160250 49.362761 6584.6985 3.5149882e+09 0.12984019 0.034134990 -17.273941 49.234241 6586.9030 3.2826712e+09 0.12716243 0.033159623 -17.387633 49.105720 6589.1075 3.0787340e+09 0.12487817 0.032832736 -17.499909 48.978800 6591.3120 2.9154220e+09 0.12241829 0.028849902 -17.599387 48.866346 6593.5164 2.7871665e+09 0.12020218 0.026622097 -17.698865 48.753891 6595.7209 2.6698490e+09 0.11744469 0.025698331 -17.805644 48.628785 6597.9254 2.5388388e+09 0.11536284 0.025430714 -17.914393 48.500264 6600.1298 2.3926547e+09 0.11459977 0.025256820 -18.023142 48.371743 6602.3343 2.2414641e+09 0.11396406 0.027231337 -18.131890 48.243220 6604.5388 2.0970281e+09 0.11280441 0.026391194 -18.240638 48.114700 6606.7433 1.9666494e+09 0.11189427 0.026168337 -18.349386 47.986179 6608.9477 1.8577314e+09 0.10874792 0.023707313 -18.448367 47.869202 6611.1522 1.7738608e+09 0.10550909 0.024861390 -18.543521 47.756748 6613.3567 1.6969412e+09 0.10411464 0.023704459 -18.642190 47.637764 6615.5612 1.6123814e+09 0.10232660 0.023268797 -18.745995 47.509243 6617.7656 1.5221047e+09 0.10109747 0.023693091 -18.849801 47.380723 6619.9701 1.4332770e+09 0.10008638 0.024759984 -18.953606 47.252201 6622.1746 1.3537771e+09 0.098374685 0.024711526 -19.055630 47.121898 6624.3790 1.2769569e+09 0.096180182 0.025065212 -19.154492 46.988435 6626.5835 1.2046339e+09 0.094106406 0.025847444 -19.250644 46.862060 6628.7880 1.1393647e+09 0.092222932 0.026023028 -19.341472 46.749606 6630.9925 1.0863968e+09 0.089863744 0.025930747 -19.432504 46.636745 6633.1969 1.0400925e+09 0.087970463 0.026186637 -19.531365 46.508225 6635.4014 9.8817014e+08 0.086172168 0.026459985 -19.630227 46.379705 6637.6059 9.3553047e+08 0.084906254 0.025864668 -19.729090 46.251183 6639.8104 8.8574157e+08 0.084768763 0.025338435 -19.827952 46.122661 6642.0148 8.4146350e+08 0.085177083 0.025152303 -19.914712 46.009875 6644.2193 8.0786549e+08 0.084235442 0.025367308 -20.001215 45.897422 6646.4238 7.7531337e+08 0.083264232 0.026139507 -20.092666 45.774247 6648.6282 7.3928315e+08 0.082200080 0.027384835 -20.186584 45.645725 6650.8327 7.0355258e+08 0.081750613 0.026445870 -20.280504 45.514020 6653.0372 6.6149629e+08 0.081475163 0.027544651 -20.374423 45.380558 6655.2417 6.2191258e+08 0.080204931 0.027710073 -20.471413 45.250164 6657.4461 5.8430521e+08 0.078490696 0.029418617 -20.570276 45.121642 6659.6506 5.5208613e+08 0.077046891 0.031698880 -20.656570 45.002733 6661.8551 5.2463341e+08 0.075570520 0.032970462 -20.734423 44.890280 6664.0596 5.0006007e+08 0.074163037 0.031988175 -20.816872 44.773230 6666.2640 4.7730809e+08 0.074163448 0.026960044 -20.910791 44.644707 6668.4685 4.5370507e+08 0.073140683 0.027885365 -21.003410 44.516185 6670.6730 4.2975863e+08 0.072872694 0.027016854 -21.092386 44.387665 6672.8774 4.0440821e+08 0.072534539 0.027388183 -21.181362 44.257957 6675.0819 3.8046981e+08 0.070984738 0.029955263 -21.270338 44.124493 6677.2864 3.6148951e+08 0.068939468 0.031951082 -21.356900 43.995590 6679.4909 3.4571381e+08 0.068623857 0.029862143 -21.434752 43.883135 6681.6953 3.3249883e+08 0.069481971 0.030190810 -21.512605 43.770681 6683.8998 3.1706950e+08 0.069850323 0.032507263 -21.600524 43.643687 6686.1043 3.0158548e+08 0.069433652 0.033821758 -21.689500 43.515167 6688.3088 2.8812867e+08 0.067078488 0.033856462 -21.778476 43.386646 6690.5132 2.7137741e+08 0.065825029 0.033057047 -21.867452 43.258125 6692.7177 2.5860361e+08 0.065210906 0.031931906 -21.952182 43.129604 6694.9222 2.4252963e+08 0.064942075 0.029968552 -22.036215 43.001082 6697.1266 2.3244056e+08 0.064627778 0.030107293 -22.111465 42.882377 6699.3311 2.2336167e+08 0.063444366 0.031284904 -22.184993 42.765598 6701.5356 2.1321116e+08 0.061824458 0.032195311 -22.264024 42.642668 6703.7401 2.0389260e+08 0.062020161 0.035527111 -22.348057 42.514148 6705.9445 1.9564020e+08 0.062093087 0.038347802 -22.432090 42.385627 6708.1490 1.8894259e+08 0.061680639 0.040205844 -22.516123 42.257105 6710.3535 1.7923941e+08 0.060304677 0.040565685 -22.600156 42.128583 6712.5580 1.6873052e+08 0.058132334 0.042865895 -22.684189 42.000062 6714.7624 1.5573453e+08 0.056006956 0.047360728 -22.765974 41.871541 6716.9669 1.4835971e+08 0.053706276 0.049825516 -22.845064 41.743019 6719.1714 1.4208995e+08 0.051136983 0.051207022 -22.921751 41.621436 6721.3758 1.3592860e+08 0.051120686 0.050417143 -22.995279 41.508984 6723.5803 1.3111914e+08 0.049075102 0.049692597 -23.069472 41.394015 6725.7848 1.2760027e+08 0.044464974 0.041085798 -23.148562 41.260550 6727.9893 1.2130671e+08 0.043068149 0.039642403 -23.227652 41.127564 6730.1937 1.1616076e+08 0.041075537 0.040644538 -23.306741 40.999044 6732.3982 1.1143577e+08 0.038935635 0.043813518 -23.385467 40.870524 6734.6027 1.0561975e+08 0.037925645 0.049317338 -23.459615 40.742001 6736.8072 1.0113103e+08 0.039096448 0.053406501 -23.534013 40.613479 6739.0116 94033429. 0.039204637 0.062840781 -23.613103 40.484959 6741.2161 86339647. 0.037021766 0.066375020 -23.692056 40.356438 6743.4206 83769568. 0.032273867 0.073884610 -23.766202 40.227916 6745.6250 80002292. 0.029137625 0.078829650 -23.840381 40.099394 6747.8295 77077421. 0.023806353 0.067075590 -23.919462 39.970874 6750.0340 73407990. 0.019351690 0.072062172 -23.998551 39.842354 6752.2385 69952652. 0.012273576 0.073858530 -24.072788 39.713834 6754.4429 66553120. -0.015272881 0.075501175 -24.146935 39.585314 6756.6474 60054878. 0.0032505461 0.075832786 -24.221082 39.452053 6758.8519 54023887. 0.059269330 0.075506737 -24.295229 39.318588