# # 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 = 64.050661 km # Date (UTC) = 2014-12-22T10:20:29.729 # Date (julian) = 2457013.93089964 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.4880 7.1440100e+10 0.038034923 0.031525722 101.13502 29.243895 6500.1562 6.2857759e+10 0.047311942 0.032330309 101.20016 29.118258 6502.8244 5.5965462e+10 0.056685848 0.033134897 101.26208 28.989373 6505.4926 5.0485109e+10 0.066346340 0.033939484 101.32258 28.859065 6508.1608 4.5937131e+10 0.076448027 0.034744071 101.38561 28.731312 6510.8290 4.1921055e+10 0.087067060 0.035548658 101.45076 28.605676 6513.4972 3.8274432e+10 0.098284072 0.036353246 101.51590 28.480039 6516.1654 3.4878101e+10 0.11015926 0.037157833 101.58105 28.354402 6518.8336 3.1763157e+10 0.12274689 0.037962420 101.64504 28.228765 6521.5018 2.8967559e+10 0.13614352 0.038767008 101.70553 28.103128 6524.1700 2.6463166e+10 0.14418309 0.039487337 101.76603 27.977490 6526.8382 2.4174839e+10 0.15095361 0.040546789 101.82652 27.851836 6529.5063 2.2047128e+10 0.15625404 0.043042348 101.88702 27.726183 6532.1745 2.0064044e+10 0.16153743 0.046830002 101.95194 27.600546 6534.8427 1.8211957e+10 0.16487886 0.048180304 102.01708 27.474909 6537.5109 1.6502558e+10 0.16711850 0.048926108 102.07850 27.349273 6540.1791 1.4967072e+10 0.16943354 0.050938727 102.13899 27.223635 6542.8473 1.3592630e+10 0.16934119 0.051323929 102.19949 27.097998 6545.5155 1.2366735e+10 0.16864646 0.052460186 102.25998 26.972362 6548.1837 1.1275250e+10 0.16723366 0.053722509 102.32047 26.846716 6550.8519 1.0297576e+10 0.16497847 0.055198671 102.38097 26.721063 6553.5201 9.4105553e+09 0.16286744 0.055073617 102.44147 26.595416 6556.1883 8.6159973e+09 0.16018908 0.053985442 102.50196 26.469779 6558.8565 7.9017368e+09 0.15765767 0.052509464 102.56150 26.344143 6561.5247 7.2874244e+09 0.15483620 0.051114124 102.61733 26.218506 6564.1929 6.7461440e+09 0.15194463 0.048684181 102.67343 26.093133 6566.8611 6.2552584e+09 0.15010827 0.046695772 102.73393 25.972149 6569.5293 5.8024212e+09 0.14848413 0.044886872 102.79442 25.851166 6572.1975 5.3767725e+09 0.14715063 0.044117067 102.85069 25.725943 6574.8657 5.0047396e+09 0.14517170 0.042439226 102.90654 25.600290 6577.5339 4.6694842e+09 0.14279998 0.039381799 102.96591 25.474649 6580.2021 4.3749227e+09 0.14028963 0.036334019 103.02640 25.349012 6582.8703 4.1001184e+09 0.13812180 0.035056973 103.08406 25.223375 6585.5385 3.8503517e+09 0.13580544 0.033540293 103.13989 25.097739 6588.2066 3.6325254e+09 0.13377870 0.033310920 103.19788 24.974247 6590.8748 3.4333712e+09 0.13074405 0.029434720 103.25837 24.853263 6593.5430 3.2619282e+09 0.12779310 0.026597359 103.31741 24.730824 6596.2112 3.1016658e+09 0.12407773 0.025726313 103.37326 24.605170 6598.8794 2.9384035e+09 0.12118898 0.024987294 103.43024 24.476959 6601.5476 2.7691433e+09 0.12029984 0.027303591 103.49306 24.335615 6604.2158 2.5928708e+09 0.11820095 0.026199424 103.55412 24.199417 6606.8840 2.4272640e+09 0.11706379 0.025915413 103.60996 24.078434 6609.5522 2.2941249e+09 0.11366133 0.023869965 103.66580 23.956968 6612.2204 2.1818484e+09 0.11134566 0.024156071 103.72163 23.831331 6614.8886 2.0770430e+09 0.11060349 0.023328279 103.77747 23.705695 6617.5568 1.9749732e+09 0.10964215 0.023623854 103.83331 23.584485 6620.2250 1.8764435e+09 0.10926960 0.024839702 103.88916 23.463486 6622.8932 1.7861642e+09 0.10795641 0.024520255 103.94125 23.338749 6625.5614 1.7030718e+09 0.10648151 0.026067506 103.99244 23.213112 6628.2296 1.6252566e+09 0.10466318 0.025796307 104.04668 23.090531 6630.8978 1.5519388e+09 0.10282723 0.025930514 104.10251 22.969548 6633.5660 1.4762118e+09 0.10122336 0.026251066 104.16190 22.838225 6636.2342 1.3994074e+09 0.099480447 0.026458816 104.22472 22.696882 6638.9024 1.3229184e+09 0.098196434 0.025632329 104.28059 22.567704 6641.5706 1.2481311e+09 0.098846041 0.025150238 104.33177 22.446720 6644.2388 1.1898629e+09 0.097642987 0.025369410 104.38505 22.323642 6646.9070 1.1371500e+09 0.096164256 0.026389614 104.44090 22.197989 6649.5751 1.0893378e+09 0.094717114 0.026840877 104.49535 22.073736 6652.2433 1.0469769e+09 0.093797062 0.027317474 104.54653 21.952753 6654.9115 9.9848620e+08 0.092296420 0.027647902 104.59946 21.829490 6657.5797 9.5110083e+08 0.089755184 0.029573583 104.66228 21.693381 6660.2479 9.0070375e+08 0.087642635 0.031851352 104.72231 21.559790 6662.9161 8.5278113e+08 0.085693991 0.032530272 104.77349 21.434153 6665.5843 8.1290507e+08 0.084775653 0.027589702 104.82468 21.308939 6668.2525 7.7989064e+08 0.083777803 0.027694233 104.87587 21.187940 6670.9207 7.5231830e+08 0.083377222 0.026902082 104.92706 21.066940 6673.5889 7.1662074e+08 0.082846832 0.028339970 104.98428 20.931698 6676.2571 6.8069475e+08 0.080405223 0.031879425 105.04166 20.796079 6678.9253 6.4530350e+08 0.079369933 0.030317736 105.09284 20.675097 6681.5935 6.1409760e+08 0.080618513 0.030112677 105.14403 20.554114 6684.2617 5.9074556e+08 0.080894953 0.032667371 105.19522 20.433130 6686.9299 5.6598364e+08 0.079325769 0.034302105 105.24640 20.312146 6689.5981 5.4517338e+08 0.076332847 0.033477657 105.30229 20.176212 6692.2663 5.2559067e+08 0.075047037 0.032456119 105.35987 20.034868 6694.9345 5.0677389e+08 0.074188587 0.029951316 105.41219 19.910289 6697.6027 4.8794533e+08 0.073323008 0.030167534 105.46338 19.789290 6700.2709 4.6743182e+08 0.071302517 0.030868624 105.51889 19.658087 6702.9391 4.4481437e+08 0.070208013 0.033626572 105.57647 19.521978 6705.6073 4.2240576e+08 0.070207349 0.037748179 105.62916 19.397441 6708.2754 4.0251626e+08 0.069615386 0.040343532 105.68034 19.276458 6710.9436 3.8829847e+08 0.067565521 0.040681202 105.73225 19.146157 6713.6118 3.7554184e+08 0.064741212 0.045899517 105.78460 19.010047 6716.2800 3.6227971e+08 0.062249995 0.048813826 105.83613 18.884613 6718.9482 3.4774030e+08 0.059167870 0.051289212 105.88731 18.763630 6721.6164 3.3032002e+08 0.059375105 0.050489631 105.93915 18.634226 6724.2846 3.1414530e+08 0.056487700 0.047549884 105.99150 18.498119 6726.9528 3.0086710e+08 0.052876827 0.040959961 106.04723 18.361997 6729.6210 2.8739912e+08 0.052131334 0.040631506 106.10483 18.225868 6732.2892 2.7560183e+08 0.050217597 0.043793451 106.15427 18.104321 6734.9574 2.6781061e+08 0.050081087 0.049295995 106.20081 17.987990 6737.6256 2.5696079e+08 0.052079905 0.056128429 106.25383 17.860040 6740.2938 2.4972608e+08 0.051890335 0.064552261 106.31142 17.723932 6742.9620 2.3922304e+08 0.048151920 0.070954824 106.36545 17.587823 6745.6302 2.2646474e+08 0.044808868 0.078831812 106.41780 17.451714 6748.2984 2.1877459e+08 0.040592909 0.068586698 106.47015 17.315606 6750.9666 2.0808334e+08 0.037735764 0.073654601 106.52250 17.179497 6753.6348 1.9957915e+08 0.034570478 0.075031532 106.57933 17.043388 6756.3030 1.9257676e+08 0.031576464 0.074946493 106.63692 16.907279 6758.9712 1.8271968e+08 0.031714325 0.075758978 106.68404 16.789891 6761.6394 1.7703685e+08 0.034229046 0.078021048 106.73057 16.673560 6764.3076 1.7009187e+08 0.038667400 0.079498020 106.78175 16.541441 6766.9758 1.6366901e+08 0.039210942 0.081920914 106.83411 16.405312 6769.6439 1.6075949e+08 0.033358356 0.086016115 106.88646 16.269201 6772.3121 1.5424537e+08 0.028459197 0.092487662 106.93881 16.133092 6774.9803 1.5015669e+08 0.023533540 0.098959209 106.99116 16.002100 6777.6485 1.4131706e+08 0.018670994 0.10543076 107.04351 15.870876 6780.3167 1.3211454e+08 0.013825676 0.11190230 107.09586 15.734766 6782.9849 1.2607645e+08 0.0089812388 0.11837385 107.14821 15.599478 6785.6531 1.2187305e+08 0.0041620243 0.12484540 107.20056 15.468604 6788.3213 1.2009867e+08 -0.00063580503 0.13131695 107.25475 15.331645 6790.9895 1.1355769e+08 -0.0053692501 0.13778849 107.31458 15.176088 6793.6577 1.0623808e+08 -0.010089829 0.14426004 107.37011 15.034728 6796.3259 1.0104433e+08 -0.014824685 0.15073159 107.42246 14.903855 6798.9941 97369833. -0.019565001 0.15720314 107.47481 14.769501 6801.6623 96596291. -0.024325242 0.16367468 107.52716 14.633392 6804.3305 94606787. -0.029071687 0.17014623 107.57556 14.501234 6806.9987 90317086. -0.033796169 0.17661778 107.62267 14.370360 6809.6669 86116826. -0.038514917 0.18308932 107.68052 14.218643 6812.3351 82947872. -0.043239173 0.18956087 107.73906 14.067357 6815.0033 79447177. -0.047953386 0.19603242 107.79141 13.936484 6817.6715 75950008. -0.052661461 0.20250397 107.84238 13.805605 6820.3397 72319433. -0.057366954 0.20897551 107.88950 13.674712 6823.0079 67881319. -0.062066818 0.21544706 107.94111 13.535117 6825.6761 68380685. -0.066787115 0.22191861 108.00094 13.379561 6828.3442 68552186. -0.071508439 0.22839016 108.05210 13.240823 6831.0124 65947872. -0.076226708 0.23486170 108.09922 13.109948 6833.6806 63965887. -0.080956817 0.24133325 108.15614 12.964654 6836.3488 59603364. -0.085705093 0.24780480 108.21470 12.816424 6839.0170 55555339. -0.090476900 0.25427635 108.26182 12.680315 6841.6852 53462247. -0.095273630 0.26074789 108.31134 12.541655 6844.3534 52144535. -0.10012029 0.26721944 108.37117 12.392082 6847.0216 51836346. -0.10505021 0.27369099 108.42790 12.242509 6849.6898 51989323. -0.11014269 0.28016253 108.48174 12.092936 6852.3580 48427908. -0.11630440 0.28663408 108.54065 11.943362 6855.0262 44149734. -0.12955263 0.29310563 108.59825 11.797065 6857.6944 42719803. -0.12769924 0.29957718 108.64537 11.666191 6860.3626 42713114. -0.11721619 0.30604872 108.69427 11.530362