# # 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 = 77.571340 km # Date (UTC) = 2011-12-20T08:44:44.038 # Date (julian) = 2455915.86439859 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6517.0537 6.2957685e+10 0.13328851 0.037425718 122.19496 33.521633 6519.6379 5.4494202e+10 0.14558878 0.038204974 122.27608 33.384739 6522.2221 4.7029547e+10 0.15736500 0.038975415 122.35600 33.249196 6524.8063 4.0863305e+10 0.16321742 0.039713405 122.42360 33.127516 6527.3905 3.6121877e+10 0.16711045 0.040999976 122.49120 33.005836 6529.9747 3.2293780e+10 0.17045280 0.043788375 122.55880 32.884155 6532.5589 2.8936143e+10 0.17219698 0.047151075 122.62641 32.762474 6535.1431 2.6013685e+10 0.17247186 0.048162234 122.69401 32.643715 6537.7273 2.3487539e+10 0.17191263 0.049028095 122.76162 32.526524 6540.3114 2.1300118e+10 0.17145626 0.051001238 122.82923 32.407392 6542.8956 1.9357821e+10 0.16961015 0.051342272 122.89683 32.285710 6545.4798 1.7602341e+10 0.16816501 0.052459866 122.96346 32.164029 6548.0640 1.6010179e+10 0.16702089 0.053686764 123.02656 32.042349 6550.6482 1.4600167e+10 0.16569971 0.055147665 123.08966 31.920675 6553.2324 1.3373618e+10 0.16436592 0.055218243 123.15724 31.803453 6555.8166 1.2308815e+10 0.16194375 0.054167234 123.22485 31.686263 6558.4008 1.1398683e+10 0.15935282 0.052897791 123.28895 31.565588 6560.9850 1.0594716e+10 0.15517446 0.051386232 123.35205 31.443907 6563.5692 9.8783247e+09 0.15126384 0.049269980 123.41514 31.322226 6566.1534 9.2318714e+09 0.14761560 0.047096134 123.47823 31.200545 6568.7375 8.5710252e+09 0.14518419 0.045093687 123.54399 31.075435 6571.3217 7.8926789e+09 0.14360518 0.044415404 123.61498 30.943612 6573.9059 7.2238964e+09 0.14149707 0.042930502 123.68473 30.815498 6576.4901 6.6124716e+09 0.13955754 0.040807265 123.75232 30.693816 6579.0743 6.1162513e+09 0.13685844 0.037029651 123.81860 30.572794 6581.6585 5.7099917e+09 0.13480827 0.035397209 123.87720 30.455604 6584.2427 5.3494861e+09 0.13272329 0.034383313 123.93580 30.338414 6586.8269 5.0210333e+09 0.13084001 0.033160607 123.99857 30.217055 6589.4111 4.7113770e+09 0.12886744 0.032230467 124.06166 30.095373 6591.9953 4.4201233e+09 0.12628734 0.028078884 124.12475 29.976889 6594.5794 4.1563113e+09 0.12366290 0.025854437 124.18785 29.859714 6597.1636 3.9097757e+09 0.12076312 0.025671091 124.24873 29.740330 6599.7478 3.6814549e+09 0.11929457 0.024974708 124.30732 29.618649 6602.3320 3.4670125e+09 0.11856329 0.027233307 124.36713 29.498188 6604.9162 3.2846129e+09 0.11718951 0.026615287 124.43023 29.380998 6607.5004 3.1118404e+09 0.11510234 0.024718906 124.49348 29.262766 6610.0846 2.9302274e+09 0.11129812 0.024083796 124.55940 29.125872 6612.6688 2.7470907e+09 0.10868304 0.023821070 124.62508 28.990566 6615.2530 2.5645354e+09 0.10690991 0.023259315 124.68818 28.873391 6617.8372 2.4124144e+09 0.10518413 0.023716805 124.75127 28.756217 6620.4213 2.2857290e+09 0.10380142 0.024902975 124.81048 28.639042 6623.0055 2.1684981e+09 0.10192048 0.024493877 124.86907 28.521867 6625.5897 2.0586139e+09 0.10035771 0.026101323 124.92766 28.401786 6628.1739 1.9547583e+09 0.098791580 0.025773706 124.98625 28.280088 6630.7581 1.8633327e+09 0.097299890 0.025930170 125.04484 28.160309 6633.3423 1.7797049e+09 0.095944004 0.026212014 125.10343 28.043136 6635.9265 1.6975255e+09 0.094369495 0.026538728 125.16352 27.922957 6638.5107 1.6049636e+09 0.093407181 0.025649394 125.22943 27.791133 6641.0949 1.5142202e+09 0.094072012 0.025148623 125.29259 27.662720 6643.6791 1.4303447e+09 0.093477315 0.025295148 125.34667 27.545545 6646.2632 1.3613706e+09 0.092357958 0.026056412 125.40082 27.428306 6648.8474 1.3020390e+09 0.090987058 0.027531561 125.45940 27.306626 6651.4316 1.2423325e+09 0.090492383 0.026814945 125.51799 27.184945 6654.0158 1.1798283e+09 0.089737935 0.028029487 125.58241 27.055185 6656.6000 1.1166941e+09 0.087616604 0.028550041 125.64833 26.923342 6659.1842 1.0566724e+09 0.085739868 0.031796175 125.70451 26.803570 6661.7684 9.9833582e+08 0.084097020 0.032926306 125.75859 26.686396 6664.3526 9.4982757e+08 0.082610320 0.030916020 125.81267 26.569221 6666.9368 9.0888488e+08 0.082186065 0.027091136 125.86675 26.452046 6669.5210 8.7059668e+08 0.080828965 0.027820642 125.92539 26.329230 6672.1051 8.3051319e+08 0.080417345 0.026940545 125.99130 26.197407 6674.6893 7.8580060e+08 0.078855739 0.029536294 126.05232 26.071631 6677.2735 7.4296569e+08 0.076285403 0.031969368 126.10641 25.954457 6679.8577 7.1006755e+08 0.076143301 0.029558991 126.16049 25.837279 6682.4419 6.8522695e+08 0.076995732 0.030762179 126.21457 25.720089 6685.0261 6.6382840e+08 0.077060564 0.032732405 126.26866 25.602899 6687.6103 6.3565929e+08 0.074955704 0.034002535 126.32933 25.471437 6690.1945 6.0355480e+08 0.072775740 0.033093576 126.39013 25.339707 6692.7787 5.7601104e+08 0.071816002 0.031861106 126.44424 25.222482 6695.3629 5.5514123e+08 0.071218199 0.029792821 126.49832 25.105307 6697.9471 5.3590995e+08 0.070443810 0.030211116 126.55770 24.976648 6700.5312 5.1736104e+08 0.068436382 0.031061755 126.61854 24.844824 6703.1154 4.9736253e+08 0.067750060 0.033964080 126.67389 24.724891 6705.6996 4.7943121e+08 0.067810709 0.037912391 126.72798 24.607717 6708.2838 4.6501252e+08 0.067304120 0.040352639 126.78607 24.481858 6710.8680 4.4741059e+08 0.065512335 0.040666395 126.84691 24.350034 6713.4522 4.3100253e+08 0.062991261 0.045322105 126.90076 24.227290 6716.0364 4.1514012e+08 0.060727054 0.048454947 126.95035 24.110101 6718.6206 3.9765003e+08 0.058008583 0.050778908 127.00445 23.987031 6721.2048 3.8336119e+08 0.057927688 0.050365595 127.06529 23.855208 6723.7890 3.6879997e+08 0.056048409 0.049808956 127.12395 23.723384 6726.3731 3.5426503e+08 0.051736058 0.040954733 127.17972 23.591561 6728.9573 3.4156224e+08 0.051000845 0.040984954 127.23472 23.468494 6731.5415 3.2532761e+08 0.048813524 0.042827756 127.28880 23.355827 6734.1257 3.1604065e+08 0.047491380 0.049346036 127.34329 23.238595 6736.7099 3.0871236e+08 0.049472302 0.053038839 127.39906 23.106771 6739.2941 2.9879530e+08 0.050301273 0.063186467 127.45483 22.974947 6741.8783 2.8919889e+08 0.048303320 0.068263609 127.51060 22.843124 6744.4625 2.7488875e+08 0.043471529 0.078151124 127.56588 22.715596 6747.0467 2.6336894e+08 0.038649473 0.067345096 127.61997 22.598406 6749.6309 2.5340253e+08 0.037344886 0.072105204 127.67418 22.480499 6752.2150 2.4516888e+08 0.033730997 0.073885629 127.72995 22.353746 6754.7992 2.3742453e+08 0.032128614 0.074928201 127.78572 22.226473 6757.3834 2.3040897e+08 0.029657102 0.075576463 127.84149 22.094648 6759.9676 2.2272450e+08 0.030755378 0.076053456 127.89727 21.962824 6762.5518 2.1255800e+08 0.035352416 0.077160737 127.95304 21.831001 6765.1360 2.0264301e+08 0.038550359 0.079556019 128.00881 21.699978 6767.7202 1.9195526e+08 0.037017720 0.081169344 128.06458 21.573225 6770.3044 1.8756196e+08 0.031603640 0.087617947 128.12035 21.445531 6772.8886 1.8602404e+08 0.026919231 0.093885744 128.17612 21.313707 6775.4728 1.8092140e+08 0.022287813 0.10015354 128.23082 21.182965 6778.0569 1.7386553e+08 0.017686209 0.10642134 128.28152 21.056211 6780.6411 1.6873038e+08 0.013058883 0.11268914 128.33344 20.928236 6783.2253 1.6395500e+08 0.0084325595 0.11895693 128.38921 20.796413 6785.8095 1.6348829e+08 0.0037574619 0.12522473 128.44498 20.665947 6788.3937 1.5837695e+08 -0.00086197419 0.13149253 128.50076 20.539175 6790.9779 1.5233554e+08 -0.0054698631 0.13776033 128.55503 20.410905 6793.5621 1.5001207e+08 -0.010092819 0.14402812 128.60574 20.279082 6796.1463 1.4457113e+08 -0.014651424 0.15029592 128.65808 20.148902 6798.7305 1.4111440e+08 -0.019198970 0.15656372 128.71385 20.022149 6801.3147 1.3755873e+08 -0.023730499 0.16283152 128.76784 19.895395 6803.8988 1.3453573e+08 -0.028268383 0.16909931 128.81855 19.768641 6806.4830 1.3103883e+08 -0.032803532 0.17536711 128.87420 19.632814 6809.0672 1.2520929e+08 -0.037319973 0.18163491 128.93794 19.482155 6811.6514 1.1957444e+08 -0.041840880 0.18790271 128.99315 19.347126 6814.2356 1.1957936e+08 -0.046416629 0.19417050 129.04385 19.220373 6816.8198 1.1969016e+08 -0.050993637 0.20043830 129.09801 19.093620 6819.4040 1.1882642e+08 -0.055564429 0.20670610 129.15378 18.966867 6821.9882 1.1844403e+08 -0.060141246 0.21297389 129.20596 18.836518 6824.5724 1.1547877e+08 -0.064706377 0.21924169 129.25666 18.704695 6827.1566 1.1352143e+08 -0.069278777 0.22550949 129.31270 18.563262 6829.7408 1.1354564e+08 -0.073861856 0.23177729 129.37055 18.418613 6832.3249 1.1399378e+08 -0.078446560 0.23804508 129.42126 18.291844 6834.9091 1.1225383e+08 -0.083025500 0.24431288 129.47225 18.164390 6837.4933 1.0984733e+08 -0.087607000 0.25058068 129.53019 18.019526 6840.0775 1.0536621e+08 -0.092195323 0.25684848 129.58587 17.878743 6842.6617 1.0211757e+08 -0.096787433 0.26311627 129.63657 17.746920 6845.2459 1.0316164e+08 -0.10136639 0.26938407 129.68974 17.610654 6847.8301 1.0016626e+08 -0.10596236 0.27565187 129.74769 17.465790 6850.4143 93839452. -0.11058065 0.28191967 129.80563 17.320926 6852.9985 87580037. -0.11520690 0.28818746 129.86357 17.176061 6855.5827 83071811. -0.11982173 0.29445526 129.91508 17.047300 6858.1668 81971443. -0.12439087 0.30072306 129.96578 16.920547 6860.7510 83758797. -0.12891514 0.30699086 130.02313 16.777190 6863.3352 82315456. -0.13349427 0.31325865 130.08108 16.632326 6865.9194 80190730. -0.13809495 0.31952645 130.13902 16.487462 6868.5036 78092725. -0.14270759 0.32579425 130.19696 16.342598 6871.0878 76382534. -0.14732728 0.33206205 130.25491 16.197734 6873.6720 76162224. -0.15192270 0.33832984 130.31285 16.052869 6876.2562 73644449. -0.15661089 0.34459764 130.37071 15.908005 6878.8404 70425281. -0.16137245 0.35086544 130.42287 15.763141 6881.4246 63007262. -0.16642168 0.35713323 130.47669 15.618277 6884.0087 60787988. -0.17135921 0.36340103 130.53463 15.473413 6886.5929 58301357. -0.17649477 0.36966883 130.58932 15.328548 6889.1771 58007974. -0.18174531 0.37593663 130.64147 15.183683 6891.7613 56060645. -0.18770517 0.38220442 130.69847 15.038820 6894.3455 50118726. -0.19614063 0.38847222 130.75642 14.893957 6896.9297 46760339. -0.22086326 0.39474002 130.81437 14.749092 6899.5139 41568190. -0.21145253 0.40100782 130.87008 14.604228 6902.0981 41886024. -0.17552853 0.40727561 130.92223 14.459365