# # 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 = 54.096479 km # Date (UTC) = 2013-12-27T10:48:55.988 # Date (julian) = 2456653.95064801 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.0271 5.5725263e+10 0.045778385 0.032592932 92.898206 32.167235 6503.2661 5.2116482e+10 0.055244499 0.033268090 92.956777 32.061808 6505.5051 4.8648700e+10 0.065036080 0.033943248 93.019764 31.948428 6507.7440 4.5100674e+10 0.075095013 0.034618405 93.085654 31.829821 6509.9830 4.1536026e+10 0.085427743 0.035293563 93.147873 31.715525 6512.2220 3.8235299e+10 0.096132448 0.035968721 93.202538 31.610098 6514.4610 3.5316301e+10 0.10727817 0.036643879 93.257204 31.504672 6516.7000 3.2823670e+10 0.11892029 0.037319036 93.314866 31.399235 6518.9389 3.0581828e+10 0.13099836 0.037994194 93.373445 31.293794 6521.1779 2.8529759e+10 0.14346931 0.038669352 93.431220 31.188357 6523.4169 2.6658750e+10 0.15226875 0.039282437 93.485885 31.082931 6525.6559 2.4924200e+10 0.15842035 0.039707362 93.540551 30.977505 6527.8948 2.3265129e+10 0.16445539 0.041366138 93.595216 30.872079 6530.1338 2.1823080e+10 0.16957961 0.044016041 93.649881 30.766653 6532.3728 2.0335380e+10 0.17337005 0.046995624 93.705115 30.660129 6534.6118 1.8701448e+10 0.17534980 0.048115695 93.766614 30.541523 6536.8508 1.7014181e+10 0.17606792 0.048551691 93.828114 30.422916 6539.0897 1.5428776e+10 0.17601100 0.049752244 93.884108 30.314932 6541.3287 1.4193343e+10 0.17499240 0.051219932 93.938783 30.209491 6543.5677 1.3211918e+10 0.17300013 0.051530885 93.993456 30.104054 6545.8067 1.2361664e+10 0.17051801 0.052462794 94.048121 29.998629 6548.0456 1.1539203e+10 0.16877157 0.053681276 94.102787 29.893203 6550.2846 1.0752287e+10 0.16686263 0.055056625 94.157452 29.787777 6552.5236 1.0022709e+10 0.16489750 0.055454978 94.212117 29.682350 6554.7626 9.3513236e+09 0.16268870 0.054848383 94.266298 29.576924 6557.0016 8.7525639e+09 0.16036839 0.053865135 94.317058 29.471497 6559.2405 8.1926740e+09 0.15748294 0.052360033 94.367817 29.366071 6561.4795 7.6110716e+09 0.15472656 0.051136391 94.424624 29.255697 6563.7185 7.0053529e+09 0.15202776 0.049097248 94.486123 29.141483 6565.9575 6.4204096e+09 0.14977642 0.047231189 94.544548 29.029784 6568.1964 5.9229555e+09 0.14835544 0.045591089 94.595317 28.924344 6570.4354 5.5461147e+09 0.14679139 0.044737145 94.646086 28.818905 6572.6744 5.2432047e+09 0.14489372 0.043843949 94.699684 28.713475 6574.9134 4.9603754e+09 0.14264623 0.042416316 94.754349 28.608048 6577.1523 4.6893449e+09 0.14002326 0.039981071 94.808371 28.502621 6579.3913 4.4252362e+09 0.13700057 0.036855369 94.859130 28.397195 6581.6303 4.1727227e+09 0.13441595 0.035405745 94.909890 28.291769 6583.8693 3.9431412e+09 0.13181176 0.034581676 94.960650 28.188700 6586.1083 3.7453322e+09 0.12912393 0.033169897 95.011409 28.087178 6588.3472 3.5512198e+09 0.12680686 0.033263971 95.062441 27.984925 6590.5862 3.3502565e+09 0.12375651 0.029971620 95.119559 27.866301 6592.8252 3.1394730e+09 0.12110133 0.027272015 95.176676 27.747676 6595.0642 2.9347707e+09 0.11864409 0.025630226 95.228919 27.639171 6597.3031 2.7676643e+09 0.11630452 0.025627066 95.279679 27.533746 6599.5421 2.6246738e+09 0.11521445 0.024962336 95.330438 27.429123 6601.7811 2.5054758e+09 0.11510811 0.027413544 95.381198 27.327601 6604.0201 2.3914643e+09 0.11376018 0.026083198 95.431958 27.226079 6606.2591 2.2747947e+09 0.11350409 0.027038449 95.483978 27.113544 6608.4980 2.1485094e+09 0.11109631 0.023719204 95.536693 26.994938 6610.7370 2.0218059e+09 0.10822820 0.024707175 95.588689 26.882622 6612.9760 1.9049732e+09 0.10714262 0.023591531 95.639448 26.781100 6615.2150 1.8026434e+09 0.10596339 0.023258146 95.690208 26.679578 6617.4539 1.7113100e+09 0.10485294 0.023589753 95.740976 26.574893 6619.6929 1.6224042e+09 0.10424257 0.024693105 95.791745 26.469453 6621.9319 1.5364491e+09 0.10311679 0.024780565 95.841550 26.364978 6624.1709 1.4585297e+09 0.10119297 0.024953779 95.888404 26.263457 6626.4099 1.3919148e+09 0.099636455 0.026068713 95.935258 26.161935 6628.6488 1.3220405e+09 0.098024856 0.025966527 95.986130 26.048703 6630.8878 1.2542075e+09 0.096193576 0.025930490 96.038845 25.930097 6633.1268 1.1851690e+09 0.094697585 0.026174389 96.090760 25.818479 6635.3658 1.1254775e+09 0.092933090 0.026454639 96.141520 25.716957 6637.6047 1.0788133e+09 0.091275707 0.025865228 96.192279 25.615436 6639.8437 1.0344552e+09 0.090619983 0.025326511 96.239735 25.510591 6642.0827 9.9541083e+08 0.090578981 0.025155080 96.286599 25.405150 6644.3217 9.5376228e+08 0.089547673 0.025378372 96.335144 25.297189 6646.5607 9.0791252e+08 0.088684849 0.026210358 96.387859 25.182975 6648.7996 8.5882542e+08 0.087766888 0.027499558 96.440509 25.068902 6651.0386 8.1690521e+08 0.087547006 0.026513751 96.487364 24.967378 6653.2776 7.8461666e+08 0.087227199 0.027667386 96.534219 24.865856 6655.5166 7.5681046e+08 0.085767461 0.027823660 96.583709 24.756650 6657.7555 7.2247120e+08 0.084222783 0.029777511 96.636424 24.638044 6659.9945 6.8319833e+08 0.082943428 0.031627141 96.688124 24.522400 6662.2335 6.4780477e+08 0.081550528 0.032913268 96.734981 24.420878 6664.4725 6.1746936e+08 0.080563407 0.030477337 96.781839 24.319356 6666.7114 5.9958973e+08 0.080317805 0.027047230 96.826308 24.217826 6668.9504 5.8024351e+08 0.078988382 0.028311833 96.869265 24.116291 6671.1894 5.5799159e+08 0.079023287 0.026868047 96.912726 24.014101 6673.4284 5.3588953e+08 0.078404258 0.028099892 96.965438 23.899888 6675.6674 5.0614735e+08 0.076382680 0.031076593 97.018150 23.785674 6677.9063 4.8559915e+08 0.074967095 0.031069767 97.066323 23.678273 6680.1453 4.6835398e+08 0.075023866 0.029472796 97.113180 23.572846 6682.3843 4.5045427e+08 0.075604371 0.030718156 97.160351 23.465538 6684.6233 4.3684157e+08 0.075446582 0.032685720 97.208672 23.351324 6686.8622 4.1651041e+08 0.073864975 0.034262752 97.256994 23.237111 6689.1012 3.9592396e+08 0.070892530 0.033924907 97.309432 23.122896 6691.3402 3.7636673e+08 0.069910097 0.032920998 97.362144 23.008682 6693.5792 3.5865987e+08 0.068976347 0.031405395 97.408402 22.902862 6695.8182 3.4635497e+08 0.068711133 0.029709188 97.451353 22.801340 6698.0571 3.3078360e+08 0.068022335 0.030296240 97.494844 22.698544 6700.2961 3.1503873e+08 0.066418172 0.030887352 97.543173 22.584314 6702.5351 2.9798328e+08 0.065429445 0.033304001 97.591501 22.470084 6704.7741 2.8352290e+08 0.065824898 0.036557661 97.638617 22.366329 6707.0130 2.7724524e+08 0.065468142 0.040184958 97.685474 22.264807 6709.2520 2.7188531e+08 0.064732651 0.040972245 97.732717 22.159945 6711.4910 2.6625425e+08 0.062744184 0.041250855 97.781039 22.045731 6713.7300 2.5578019e+08 0.060557542 0.046326791 97.829360 21.931517 6715.9690 2.4089328e+08 0.058797917 0.048369606 97.877682 21.817303 6718.2079 2.3027659e+08 0.056579779 0.050136251 97.926003 21.703090 6720.4469 2.2271067e+08 0.055839744 0.050367984 97.970510 21.597891 6722.6859 2.1591049e+08 0.055222290 0.049757270 98.013462 21.496369 6724.9249 2.0887040e+08 0.051042038 0.042203455 98.057215 21.392954 6727.1638 2.0028601e+08 0.049216667 0.040742103 98.105536 21.278740 6729.4028 1.9323899e+08 0.048522246 0.040776938 98.153858 21.164526 6731.6418 1.8712822e+08 0.046574031 0.043027318 98.202176 21.050312 6733.8808 1.7937517e+08 0.045320402 0.048706286 98.250495 20.936098 6736.1198 1.7007595e+08 0.046892253 0.050807733 98.298819 20.821874 6738.3587 1.6129397e+08 0.047968534 0.059296059 98.347148 20.707643 6740.5977 1.5427131e+08 0.047208535 0.065071441 98.394068 20.593418 6742.8367 1.4931161e+08 0.043843171 0.070649490 98.437999 20.479205 6745.0757 1.4245340e+08 0.040305854 0.078598694 98.481887 20.365720 6747.3146 1.3984220e+08 0.035728622 0.067252843 98.524835 20.268103 6749.5536 1.3539090e+08 0.034372703 0.072126352 98.567784 20.170487 6751.7926 1.3334327e+08 0.030953059 0.074046784 98.613327 20.064857 6754.0316 1.2812071e+08 0.029385548 0.076162700 98.661648 19.950643 6756.2705 1.2026777e+08 0.026678998 0.074863072 98.709063 19.836429 6758.5095 1.1313536e+08 0.026525480 0.074782784 98.752995 19.722215 6760.7485 1.0958616e+08 0.026871437 0.077488634 98.796926 19.608001 6762.9875 1.0800130e+08 0.031933731 0.076457957 98.844940 19.493787 6765.2265 1.0433251e+08 0.034278065 0.079572534 98.893261 19.379573 6767.4654 1.0025635e+08 0.032968968 0.081454597 98.938711 19.268231 6769.7044 91662305. 0.027910630 0.086162775 98.982639 19.158410 6771.9434 89038444. 0.023735795 0.091593280 99.028226 19.046926 6774.1824 86813688. 0.019569140 0.097023785 99.076554 18.932695 6776.4213 83393605. 0.015380907 0.10245429 99.124439 18.818466 6778.6603 82012738. 0.011228664 0.10788479 99.168366 18.704253 6780.8993 76843701. 0.0069624958 0.11331530 99.212294 18.590039 6783.1383 75925033. 0.0028026144 0.11874580 99.261397 18.466509 6785.3773 72883550. -0.0014532323 0.12417631 99.311601 18.340996 6787.6162 66467253. -0.0059288081 0.12960681 99.360238 18.224892 6789.8552 59236040. -0.010604283 0.13503732 99.408559 18.110678 6792.0942 55839699. -0.015223925 0.14046782 99.454436 17.998909 6794.3332 55239684. -0.019809802 0.14589833 99.498364 17.889088 6796.5721 52351251. -0.025033685 0.15132883 99.542292 17.778038 6798.8111 51904852. -0.030735540 0.15675934 99.586219 17.663824 6801.0501 49389904. -0.039505039 0.16218984 99.630190 17.549533 6803.2891 50355973. -0.068318568 0.16762035 99.680376 17.424059 6805.5281 51622876. -0.050133731 0.17305085 99.730512 17.298677 6807.7670 48003626. -0.0092435506 0.17848136 99.774439 17.184464