# # 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 = 35.194755 km # Date (UTC) = 2017-01-30T10:40:04.821 # Date (julian) = 2457783.94450025 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.9703 6.8380982e+10 0.065537914 0.033480437 89.065584 53.126148 6505.3080 6.4489320e+10 0.072351200 0.033883817 89.193226 52.983190 6506.6457 6.0214449e+10 0.079151355 0.034287198 89.324474 52.836193 6507.9834 5.5824727e+10 0.085980005 0.034690578 89.426524 52.717390 6509.3211 5.2364695e+10 0.093120607 0.035093959 89.527291 52.599827 6510.6588 4.9863343e+10 0.10059617 0.035497339 89.628071 52.482249 6511.9965 4.7814972e+10 0.10831956 0.035900720 89.728862 52.364659 6513.3342 4.5346035e+10 0.11603046 0.036304100 89.834568 52.241335 6514.6719 4.1989019e+10 0.12353953 0.036707481 89.960568 52.094339 6516.0096 3.8788986e+10 0.13111347 0.037110861 90.078027 51.955885 6517.3473 3.5730013e+10 0.13873306 0.037514242 90.174594 51.838321 6518.6850 3.3572795e+10 0.14662791 0.037917622 90.271162 51.720758 6520.0227 3.1849976e+10 0.15463017 0.038321003 90.367753 51.603170 6521.3604 2.9964682e+10 0.16254063 0.038724383 90.464346 51.485581 6522.6981 2.8121329e+10 0.16846280 0.039100059 90.560938 51.367991 6524.0358 2.6437358e+10 0.17225949 0.039439682 90.657528 51.250402 6525.3735 2.5066928e+10 0.17628431 0.039739587 90.753501 51.132202 6526.7112 2.3853071e+10 0.17930533 0.040413712 90.845872 51.010440 6528.0489 2.2704300e+10 0.18161889 0.041481289 90.938243 50.888679 6529.3866 2.1450334e+10 0.18326092 0.042851634 91.030631 50.770107 6530.7243 2.0365548e+10 0.18405157 0.044842733 91.123024 50.652517 6532.0620 1.9333095e+10 0.18580183 0.046736004 91.215416 50.534927 6533.3997 1.8302383e+10 0.18549028 0.047689458 91.307809 50.417336 6534.7374 1.7328683e+10 0.18540501 0.048150844 91.400180 50.299745 6536.0751 1.6357327e+10 0.18329406 0.047857721 91.488364 50.182183 6537.4128 1.5474477e+10 0.18374371 0.048879858 91.576535 50.064622 6538.7505 1.4613814e+10 0.18242811 0.049522151 91.667326 49.944436 6540.0882 1.3785974e+10 0.18213734 0.050895786 91.759719 49.822645 6541.4259 1.3007426e+10 0.17984505 0.051188401 91.850101 49.701860 6542.7636 1.2241102e+10 0.17839526 0.051292158 91.934093 49.584270 6544.1013 1.1555800e+10 0.17647387 0.051726558 92.018085 49.466681 6545.4390 1.0931033e+10 0.17503084 0.052459500 92.105681 49.349090 6546.7767 1.0352072e+10 0.17340690 0.053103662 92.193873 49.231498 6548.1144 9.8345545e+09 0.17160404 0.053701824 92.280054 49.111919 6549.4521 9.3114325e+09 0.16979387 0.054427056 92.364029 48.990160 6550.7899 8.7999179e+09 0.16781152 0.055183132 92.448005 48.868797 6552.1276 8.3641477e+09 0.16633118 0.055554661 92.531997 48.751205 6553.4653 7.9462731e+09 0.16386556 0.055101189 92.615989 48.633614 6554.8030 7.5561371e+09 0.16184114 0.054849230 92.699981 48.516023 6556.1407 7.1964286e+09 0.15879881 0.053992446 92.783973 48.398434 6557.4784 6.8086968e+09 0.15686277 0.053566269 92.867959 48.279455 6558.8161 6.4296570e+09 0.15417203 0.052543918 92.951933 48.157694 6560.1538 6.0778427e+09 0.15234945 0.052135669 93.035908 48.035933 6561.4915 5.7166803e+09 0.14999349 0.051130496 93.115906 47.918140 6562.8292 5.3857294e+09 0.14818432 0.050090918 93.195701 47.800551 6564.1669 5.0954733e+09 0.14588113 0.048695971 93.267910 47.692141 6565.5046 4.8541068e+09 0.14422197 0.047745447 93.334400 47.590653 6566.8423 4.6765915e+09 0.14245007 0.046706411 93.400890 47.489164 6568.1800 4.5194907e+09 0.14065884 0.045606219 93.476862 47.376202 6569.5177 4.3236720e+09 0.13905857 0.044886117 93.556656 47.258612 6570.8554 4.1361436e+09 0.13742141 0.044563181 93.635052 47.141032 6572.1931 3.9281474e+09 0.13606266 0.044119581 93.710627 47.023471 6573.5308 3.7228272e+09 0.13410621 0.043231538 93.786203 46.905909 6574.8685 3.5599530e+09 0.13247051 0.042437873 93.849828 46.803613 6576.2062 3.4253414e+09 0.13016539 0.041134064 93.912821 46.702125 6577.5439 3.3345355e+09 0.12809030 0.039366049 93.976976 46.599151 6578.8816 3.2379405e+09 0.12541979 0.037257474 94.052570 46.481562 6580.2193 3.1144371e+09 0.12360274 0.036318092 94.128163 46.363972 6581.5570 2.9591150e+09 0.12152196 0.035427942 94.203744 46.243416 6582.8947 2.8099078e+09 0.11988682 0.035050321 94.279320 46.121655 6584.2324 2.6600256e+09 0.11791444 0.034388913 94.350751 46.007724 6585.5701 2.5602501e+09 0.11601194 0.033514988 94.413743 45.909735 6586.9078 2.5002874e+09 0.11412643 0.033159561 94.476736 45.811746 6588.2455 2.4390430e+09 0.11243966 0.033297942 94.543693 45.702526 6589.5832 2.3544136e+09 0.11077560 0.031888940 94.615086 45.580737 6590.9209 2.2420913e+09 0.10898292 0.029349025 94.685399 45.461109 6592.2586 2.1444066e+09 0.10767768 0.027822333 94.744891 45.363120 6593.5963 2.0838983e+09 0.10600466 0.026547827 94.804383 45.265131 6594.9340 2.0283827e+09 0.10438838 0.025659792 94.866651 45.161591 6596.2717 1.9581577e+09 0.10234669 0.025726038 94.938045 45.039802 6597.6094 1.8753260e+09 0.10114301 0.025530416 95.009438 44.918014 6598.9471 1.7974609e+09 0.099796026 0.024954975 95.070682 44.816521 6600.2848 1.7519531e+09 0.099738538 0.025575427 95.130165 44.718552 6601.6225 1.7048940e+09 0.099174593 0.027338866 95.189678 44.620492 6602.9602 1.6454263e+09 0.098314163 0.026697211 95.256795 44.498935 6604.2979 1.5672328e+09 0.097425695 0.026248179 95.323988 44.377147 6605.6356 1.4953530e+09 0.097217816 0.027198291 95.386461 44.269945 6606.9733 1.4394474e+09 0.096200096 0.025754907 95.445953 44.171956 6608.3110 1.3942357e+09 0.094243391 0.023724148 95.505445 44.073968 6609.6487 1.3544006e+09 0.092218631 0.023898638 95.562295 43.975979 6610.9864 1.3116421e+09 0.090039792 0.024945503 95.618289 43.877992 6612.3241 1.2753104e+09 0.089118207 0.024078563 95.674284 43.780004 6613.6618 1.2246879e+09 0.088401316 0.023816424 95.740319 43.660670 6614.9995 1.1677522e+09 0.087631986 0.023251842 95.807496 43.538909 6616.3373 1.1088947e+09 0.086495511 0.023335231 95.867093 43.429419 6617.6750 1.0612484e+09 0.086126850 0.023663028 95.919587 43.331432 6619.0127 1.0222348e+09 0.085591950 0.024528968 95.972081 43.233445 6620.3504 9.8392181e+08 0.085376998 0.024880100 96.034259 43.119778 6621.6881 9.4619247e+08 0.084761680 0.024861386 96.101455 42.997988 6623.0258 8.9547054e+08 0.084049032 0.024501370 96.164571 42.882804 6624.3635 8.4672988e+08 0.083178931 0.025056870 96.217065 42.784816 6625.7012 8.0444741e+08 0.082757367 0.026234305 96.269559 42.686829 6627.0389 7.6899570e+08 0.081407803 0.025331824 96.323523 42.587371 6628.3766 7.4451990e+08 0.080987355 0.025855986 96.379514 42.485883 6629.7143 7.2429301e+08 0.080237503 0.025979962 96.435506 42.384395 6631.0520 6.9758511e+08 0.079141215 0.025936046 96.495429 42.273865 6632.3897 6.6685348e+08 0.078486049 0.026079071 96.558409 42.156304 6633.7274 6.2542457e+08 0.077790614 0.026279246 96.618860 42.041649 6635.0651 5.9016974e+08 0.077251221 0.026409547 96.667854 41.940161 6636.4028 5.6422914e+08 0.076343186 0.026393336 96.716848 41.838673 6637.7405 5.4336148e+08 0.075875972 0.025798745 96.766974 41.738317 6639.0782 5.2323957e+08 0.075270983 0.025600129 96.819468 41.640329 6640.4159 5.0111003e+08 0.075968471 0.025219767 96.871962 41.542341 6641.7536 4.8553116e+08 0.076086720 0.025150859 96.924457 41.442722 6643.0913 4.7176536e+08 0.075756900 0.025206402 96.976951 41.341234 6644.4290 4.5773499e+08 0.075084519 0.025389971 97.029445 41.239747 6645.7667 4.3652687e+08 0.074593088 0.025810853 97.085772 41.128462 6647.1044 4.1691640e+08 0.074102770 0.026492746 97.144567 41.010871 6648.4421 3.9835884e+08 0.073653236 0.027260228 97.201132 40.897738 6649.7798 3.8321833e+08 0.073536431 0.026558768 97.250116 40.799770 6651.1175 3.7272873e+08 0.073401745 0.026574216 97.299100 40.701803 6652.4552 3.5864711e+08 0.073440402 0.027375767 97.348088 40.602535 6653.7929 3.4223478e+08 0.073268049 0.027930492 97.397082 40.501048 6655.1306 3.3198400e+08 0.072638008 0.027664185 97.446075 40.399560 6656.4683 3.1967415e+08 0.071615161 0.028434453 97.495069 40.299863 6657.8060 3.1387428e+08 0.070949161 0.029836063 97.544063 40.201876 6659.1437 3.0335620e+08 0.070074466 0.031804619 97.593056 40.103888 6660.4814 2.8428234e+08 0.069718266 0.032063584 97.642050 40.003611 6661.8191 2.8006484e+08 0.068921142 0.032952146 97.691044 39.902123 6663.1568 2.6810833e+08 0.068493134 0.032439753 97.740038 39.800635 6664.4945 2.6033221e+08 0.068087359 0.030396642 97.796840 39.686319 6665.8322 2.5110324e+08 0.068330814 0.027183497 97.855635 39.568728 6667.1699 2.3826891e+08 0.068249269 0.027165876 97.908899 39.459291 6668.5076 2.3195894e+08 0.067664003 0.027919992 97.954384 39.361324 6669.8453 2.1871925e+08 0.067785014 0.027487486 97.999868 39.263356 6671.1830 2.0413484e+08 0.068045895 0.026867957 98.045359 39.163426 6672.5207 1.9750558e+08 0.068003739 0.027181428 98.090855 39.061938 6673.8584 1.9260941e+08 0.067558950 0.028743077 98.136351 38.960450 6675.1961 1.8795637e+08 0.066499949 0.030174040 98.181845 38.861412 6676.5338 1.8401074e+08 0.065154820 0.032057783 98.227339 38.763425 6677.8715 1.7207758e+08 0.065042098 0.031119225 98.272832 38.665438 6679.2092 1.6817444e+08 0.064825178 0.030094859 98.321274 38.564501 6680.5469 1.6399225e+08 0.065730068 0.029559526 98.370268 38.463014 6681.8847 1.5599639e+08 0.066439087 0.030336049 98.419256 38.361529 6683.2224 1.5121265e+08 0.066926389 0.031514443 98.461363 38.263486 6684.5601 1.4040136e+08 0.067196983 0.032682512 98.503359 38.165498 6685.8978 1.3380563e+08 0.067032003 0.033653091 98.545800 38.067511 6687.2355 1.3430349e+08 0.065540415 0.034211582 98.591294 37.969521 6688.5732 1.3792407e+08 0.063648347 0.033917496 98.636788 37.871531 6689.9109 1.3855486e+08 0.062686537 0.033196101 98.682280 37.772603 6691.2486 1.3345619e+08 0.062140120 0.032942618 98.727767 37.671135 6692.5863 1.2398034e+08 0.061893569 0.032084531 98.773254 37.569668 6693.9240 1.1627927e+08 0.061394237 0.031287110 98.820762 37.461559 6695.2617 1.1590048e+08 0.061351833 0.029811408 98.871156 37.343970 6696.5994 1.1597077e+08 0.060946156 0.029924813 98.921399 37.226983 6697.9371 1.1337931e+08 0.060451026 0.030209854 98.966895 37.128996 6699.2748 1.0463605e+08 0.059670360 0.031336890 99.012391 37.031008 6700.6125 93863193. 0.058920002 0.031122012 99.057280 36.933021 6701.9502 87066679. 0.058179234 0.032803633 99.099273 36.835032 6703.2879 86337606. 0.058493085 0.034395613 99.141266 36.737043 6704.6256 91840878. 0.058320562 0.036484749 99.183260 36.637950 6705.9633 88191593. 0.058423648 0.038381138 99.225256 36.536464 6707.3010 87135705. 0.058298694 0.040143710 99.267251 36.434977 6708.6387 75940388. 0.058682906 0.040739092 99.309244 36.335102 6709.9764 66649819. 0.058863998 0.040511509 99.351231 36.237132 6711.3141 68066571. 0.057985847 0.041049588 99.393219 36.139162 6712.6518 61585352. 0.058281748 0.043040131 99.435210 36.041182 6713.9895 65580466. 0.057980607 0.047265434 99.477203 35.943194 6715.3272 56897722. 0.061404311 0.047713242 99.519196 35.845207 6716.6649 48117037. 0.084246423 0.049380703 99.561191 35.747219 6718.0026 50823893. 0.064170209 0.049816473 99.603187 35.649232 6719.3403 57289460. 0.029493728 0.051046521 99.645183 35.551245