# # 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 = 42.021542 km # Date (UTC) = 2015-12-04T09:17:08.922 # Date (julian) = 2457360.88690882 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.3813 3.7004212e+11 0.029328454 0.030588892 -15.926076 55.430889 6496.3237 2.7459545e+11 0.036275012 0.031174644 -16.041270 55.352964 6498.2662 2.0413628e+11 0.042922887 0.031760395 -16.164763 55.269425 6500.2087 1.5672623e+11 0.049263700 0.032346147 -16.294341 55.181769 6502.1512 1.2247127e+11 0.055341306 0.032931899 -16.423920 55.094113 6504.0937 9.9170655e+10 0.061347943 0.033517651 -16.536546 55.015741 6506.0362 8.4065417e+10 0.067684678 0.034103402 -16.648337 54.937826 6507.9787 7.3513889e+10 0.074646892 0.034689154 -16.760140 54.859900 6509.9212 6.4546302e+10 0.082169510 0.035274906 -16.882095 54.772245 6511.8636 5.6784771e+10 0.090315246 0.035860657 -17.004051 54.684589 6513.8061 5.0155448e+10 0.099200751 0.036446409 -17.120894 54.600608 6515.7486 4.4992931e+10 0.10908639 0.037032161 -17.229298 54.522693 6517.6911 4.1117483e+10 0.12013924 0.037617913 -17.337702 54.444778 6519.6336 3.7862708e+10 0.13214102 0.038203664 -17.446111 54.366858 6521.5761 3.4995031e+10 0.14491882 0.038789416 -17.554529 54.288932 6523.5186 3.2523657e+10 0.15398999 0.039307636 -17.662946 54.211006 6525.4610 3.0073852e+10 0.16195300 0.039729597 -17.775973 54.128470 6527.4035 2.7598756e+10 0.16921006 0.041009438 -17.894118 54.040814 6529.3460 2.5129648e+10 0.17393550 0.042786959 -18.012263 53.953159 6531.2885 2.2913065e+10 0.17687912 0.045648600 -18.119250 53.870903 6533.2310 2.1054740e+10 0.17884547 0.047617751 -18.224266 53.789601 6535.1735 1.9463334e+10 0.17847996 0.048149043 -18.329282 53.708299 6537.1160 1.7996522e+10 0.17755092 0.048739898 -18.434298 53.630038 6539.0585 1.6682644e+10 0.17608759 0.049714381 -18.539314 53.552123 6541.0009 1.5457420e+10 0.17460590 0.051326224 -18.644329 53.474208 6542.9434 1.4283809e+10 0.17312227 0.051360414 -18.758160 53.387079 6544.8859 1.3084014e+10 0.17181429 0.052363016 -18.872494 53.299423 6546.8284 1.1965668e+10 0.16998261 0.053146164 -18.981649 53.213810 6548.7709 1.1056063e+10 0.16814599 0.053897858 -19.079902 53.132496 6550.7134 1.0321701e+10 0.16688692 0.055163981 -19.178155 53.051182 6552.6559 9.7398989e+09 0.16568907 0.055421688 -19.276404 52.971128 6554.5983 9.1958392e+09 0.16375030 0.054844936 -19.374645 52.893213 6556.5408 8.6856709e+09 0.16153511 0.053933613 -19.472886 52.815298 6558.4833 8.1639040e+09 0.15924762 0.052827458 -19.576268 52.731709 6560.4258 7.5909515e+09 0.15672169 0.051890392 -19.686791 52.640242 6562.3683 7.0080877e+09 0.15406755 0.050529461 -19.797313 52.548774 6564.3108 6.4701415e+09 0.15101374 0.048630753 -19.898075 52.468078 6566.2533 6.0053082e+09 0.14830339 0.047039613 -19.996316 52.390163 6568.1958 5.6178451e+09 0.14597535 0.045591720 -20.094557 52.312248 6570.1382 5.2538202e+09 0.14358614 0.044860246 -20.189942 52.231478 6572.0807 4.9243635e+09 0.14091928 0.044183927 -20.284795 52.150176 6574.0232 4.6265270e+09 0.13787853 0.042843857 -20.379647 52.068875 6575.9657 4.3219598e+09 0.13564421 0.041405809 -20.481683 51.978504 6577.9082 4.0136603e+09 0.13374590 0.038793834 -20.584599 51.887023 6579.8507 3.7179463e+09 0.13168268 0.036602845 -20.685360 51.799168 6581.7932 3.4665191e+09 0.12962401 0.035356430 -20.780213 51.721254 6583.7356 3.2695604e+09 0.12761821 0.034649316 -20.875066 51.643339 6585.6781 3.0939331e+09 0.12567796 0.033428622 -20.972457 51.561149 6587.6206 2.9134703e+09 0.12408660 0.033295875 -21.075357 51.469681 6589.5631 2.7358235e+09 0.12209384 0.031928828 -21.178257 51.378214 6591.5056 2.5621483e+09 0.11966457 0.028631408 -21.270907 51.293776 6593.4481 2.4026102e+09 0.11749374 0.026685644 -21.358985 51.212474 6595.3906 2.2695943e+09 0.11489611 0.025664074 -21.447063 51.131172 6597.3331 2.1460242e+09 0.11242205 0.025617629 -21.537646 51.049869 6599.2755 2.0442135e+09 0.11044613 0.024946302 -21.629112 50.968566 6601.2180 1.9509922e+09 0.10977563 0.027148367 -21.720578 50.887263 6603.1605 1.8492945e+09 0.10822303 0.026568251 -21.818060 50.800946 6605.1030 1.7438671e+09 0.10706272 0.026751451 -21.917164 50.713277 6607.0455 1.6365444e+09 0.10537398 0.025617178 -22.013902 50.626654 6608.9880 1.5375922e+09 0.10201420 0.023706249 -22.098592 50.545352 6610.9305 1.4678051e+09 0.098628054 0.024892011 -22.183283 50.464050 6612.8729 1.3947964e+09 0.096935643 0.023668520 -22.271029 50.380590 6614.8154 1.3175373e+09 0.095311866 0.023378691 -22.370118 50.289123 6616.7579 1.2460430e+09 0.093665114 0.023401254 -22.469207 50.197655 6618.7004 1.1671079e+09 0.093112493 0.024299685 -22.559825 50.112167 6620.6429 1.1095300e+09 0.092625242 0.024974369 -22.644516 50.030864 6622.5854 1.0545244e+09 0.091588120 0.024602184 -22.729206 49.949561 6624.5279 1.0037094e+09 0.090245779 0.025144874 -22.811740 49.868259 6626.4704 9.5791122e+08 0.088938061 0.025991630 -22.893043 49.786957 6628.4128 9.1736676e+08 0.087744973 0.025870712 -22.974345 49.705655 6630.3553 8.7564824e+08 0.086493700 0.025929177 -23.065213 49.617395 6632.2978 8.3170251e+08 0.085133150 0.026068055 -23.160491 49.525928 6634.2403 7.8540463e+08 0.083906978 0.026344371 -23.254924 49.435075 6636.1828 7.4108277e+08 0.082655342 0.026478769 -23.336237 49.353762 6638.1253 7.0826012e+08 0.081772237 0.025666184 -23.417550 49.272450 6640.0678 6.7901932e+08 0.081689867 0.025262361 -23.499970 49.190030 6642.0102 6.4744586e+08 0.081732722 0.025152115 -23.591438 49.098562 6643.9527 6.0987131e+08 0.080790804 0.025336470 -23.682905 49.007094 6645.8952 5.8009012e+08 0.079877783 0.025871062 -23.767798 48.920558 6647.8377 5.5479430e+08 0.078897271 0.026878836 -23.845712 48.839256 6649.7802 5.3335572e+08 0.077968476 0.026558229 -23.923627 48.757954 6651.7227 5.1198769e+08 0.077329905 0.027037995 -24.006736 48.671232 6653.6652 4.8261305e+08 0.076744752 0.027865272 -24.094392 48.579765 6655.6077 4.6239019e+08 0.075140944 0.027861300 -24.182048 48.488297 6657.5501 4.3700017e+08 0.073596045 0.029539256 -24.260847 48.406073 6659.4926 4.1613135e+08 0.072212257 0.031731836 -24.338762 48.324772 6661.4351 3.9333383e+08 0.071074206 0.032756562 -24.416676 48.243470 6663.3776 3.7135175e+08 0.070184302 0.032378570 -24.503930 48.152422 6665.3201 3.5277485e+08 0.070088251 0.028022656 -24.591599 48.060941 6667.2626 3.3307061e+08 0.069840455 0.027199906 -24.674881 47.972857 6669.2051 3.1834996e+08 0.068919665 0.028145091 -24.749408 47.891554 6671.1475 3.0375487e+08 0.069117244 0.026867451 -24.823936 47.810251 6673.0900 2.9158296e+08 0.068829299 0.027593870 -24.902022 47.725066 6675.0325 2.7606262e+08 0.067498487 0.029860646 -24.985866 47.633600 6676.9750 2.6199414e+08 0.065531570 0.032342110 -25.069711 47.542134 6678.9175 2.4427318e+08 0.065045688 0.030322955 -25.153555 47.450667 6680.8600 2.3218322e+08 0.066002747 0.029627122 -25.237399 47.359200 6682.8025 2.1827404e+08 0.066610786 0.031037659 -25.319994 47.269095 6684.7450 2.0594892e+08 0.066528175 0.032691895 -25.394523 47.187793 6686.6874 1.9824284e+08 0.065222979 0.034161048 -25.469051 47.106491 6688.6299 1.8480708e+08 0.062766601 0.033930599 -25.544582 47.023337 6690.5724 1.7736307e+08 0.061549291 0.033050264 -25.624615 46.931869 6692.5149 1.6813419e+08 0.060659747 0.032167405 -25.704648 46.840402 6694.4574 1.6100050e+08 0.059854817 0.030619974 -25.784688 46.748927 6696.3999 1.5417137e+08 0.059546929 0.029841925 -25.864734 46.657448 6698.3424 1.4379511e+08 0.058620726 0.030687747 -25.944780 46.565968 6700.2848 1.3791111e+08 0.057072282 0.030878998 -26.016500 46.480835 6702.2273 1.3243622e+08 0.055796329 0.033058258 -26.087640 46.396145 6704.1698 1.2782190e+08 0.056143188 0.036260945 -26.158788 46.311448 6706.1123 1.2233862e+08 0.056217415 0.038641868 -26.238660 46.220104 6708.0548 1.2028509e+08 0.056041201 0.040103247 -26.318694 46.128636 6709.9973 1.2284564e+08 0.055118188 0.040498224 -26.397360 46.037169 6711.9398 1.1938636e+08 0.053295738 0.041761431 -26.473582 45.945702 6713.8823 1.1119895e+08 0.051495890 0.046877550 -26.549805 45.854236 6715.8247 1.0337072e+08 0.050083001 0.048222110 -26.628829 45.762768 6717.7672 1.0043000e+08 0.048343970 0.049826812 -26.708863 45.671301 6719.7097 1.0191232e+08 0.047131295 0.050695558 -26.787531 45.580963 6721.6522 99714058. 0.047480380 0.050500411 -26.855283 45.499660 6723.5947 93069783. 0.046055397 0.049700612 -26.923035 45.418357 6725.5372 87612530. 0.042305100 0.041240472 -26.991530 45.335434 6727.4797 87368301. 0.041350263 0.040321339 -27.063952 45.243954 6729.4221 88634286. 0.040816584 0.040764055 -27.136375 45.152474 6731.3646 85713609. 0.039270328 0.042475717 -27.210833 45.061001 6733.3071 76714435. 0.038192531 0.045591762 -27.287056 44.969533 6735.2496 70439013. 0.038557767 0.049558411 -27.363279 44.878065 6737.1921 65665341. 0.039789919 0.054747490 -27.436026 44.783123 6739.1346 66321043. 0.040128414 0.062991255 -27.508437 44.687845 6741.0771 63931495. 0.038449237 0.065978496 -27.580848 44.593664 6743.0196 55515766. 0.033683514 0.071179362 -27.653260 44.502198 6744.9620 54675397. 0.027824774 0.078537527 -27.725671 44.410732 6746.9045 52113736. 0.0065917020 0.068471117 -27.798082 44.319265 6748.8470 51910589. 0.020245816 0.071473079 -27.870494 44.227798 6750.7895 50760255. 0.047144768 0.073352238 -27.942905 44.136330