# # 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 = 47.591668 km # Date (UTC) = 2016-01-02T09:32:07.813 # Date (julian) = 2457389.89731265 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6492.5042 2.0212863e+11 0.021133742 0.030022877 113.20001 31.827128 6494.7220 1.5350772e+11 0.028890154 0.030691640 113.25993 31.712801 6496.9398 1.2037226e+11 0.036256112 0.031360404 113.31794 31.604505 6499.1575 9.8619730e+10 0.043402861 0.032029168 113.37596 31.496209 6501.3753 8.2978045e+10 0.050564284 0.032697932 113.43617 31.380950 6503.5931 7.0579468e+10 0.057897717 0.033366696 113.49709 31.263468 6505.8109 6.0600263e+10 0.065540852 0.034035460 113.55489 31.151987 6508.0286 5.2875072e+10 0.073811114 0.034704223 113.60904 31.047559 6510.2464 4.6845434e+10 0.082940237 0.035372987 113.66319 30.943131 6512.4642 4.1924867e+10 0.093076105 0.036041751 113.71734 30.838691 6514.6820 3.7889052e+10 0.10436229 0.036710515 113.77150 30.734249 6516.8997 3.4301854e+10 0.11666205 0.037379279 113.82761 30.624779 6519.1175 3.0813699e+10 0.12974581 0.038048042 113.88852 30.502944 6521.3353 2.7629209e+10 0.14366288 0.038716806 113.94943 30.381140 6523.5531 2.4787833e+10 0.15388449 0.039316186 114.00365 30.276523 6525.7708 2.2486471e+10 0.16206559 0.039694242 114.05780 30.172096 6527.9886 2.0686374e+10 0.17051468 0.041434208 114.11195 30.067669 6530.2064 1.9121522e+10 0.17712867 0.044117617 114.16610 29.963241 6532.4241 1.7716231e+10 0.18133828 0.047038523 114.22025 29.858812 6534.6419 1.6307487e+10 0.18241118 0.048124128 114.27995 29.743681 6536.8597 1.4809036e+10 0.18140461 0.048559693 114.34086 29.626198 6539.0775 1.3335335e+10 0.17960219 0.049737404 114.39623 29.515517 6541.2952 1.2117424e+10 0.17752554 0.051230783 114.44652 29.411075 6543.5130 1.1132254e+10 0.17513937 0.051516537 114.49681 29.306633 6545.7308 1.0350688e+10 0.17264449 0.052462114 114.55071 29.198583 6547.9486 9.6429097e+09 0.17084364 0.053648086 114.60486 29.090288 6550.1663 8.9532818e+09 0.16897962 0.055027009 114.65985 28.978768 6552.3841 8.2372289e+09 0.16688880 0.055490085 114.71642 28.861284 6554.6019 7.4995907e+09 0.16456867 0.054845011 114.77265 28.744490 6556.8197 6.8253062e+09 0.16223489 0.053892620 114.82293 28.640062 6559.0374 6.2591397e+09 0.15924835 0.052382956 114.87321 28.535634 6561.2552 5.8095363e+09 0.15621176 0.051246920 114.92350 28.431199 6563.4730 5.4364484e+09 0.15318274 0.049381236 114.97378 28.326757 6565.6908 5.1040191e+09 0.15019694 0.047534035 115.02407 28.222315 6567.9085 4.7799232e+09 0.14781457 0.045849003 115.07990 28.106371 6570.1263 4.4510567e+09 0.14553126 0.044865190 115.13646 27.988888 6572.3441 4.1365428e+09 0.14287653 0.044033111 115.18936 27.879028 6574.5619 3.8602023e+09 0.13967152 0.042585150 115.23964 27.774600 6576.7796 3.6300870e+09 0.13626169 0.040474029 115.28992 27.670171 6578.9974 3.4334789e+09 0.13198747 0.037074605 115.34020 27.565744 6581.2152 3.2531235e+09 0.12844756 0.035531452 115.39048 27.461316 6583.4329 3.0786648e+09 0.12561292 0.034802528 115.44335 27.351498 6585.6507 2.8945261e+09 0.12312703 0.033450537 115.49992 27.234014 6587.8685 2.7188930e+09 0.12154420 0.033350794 115.55532 27.118026 6590.0863 2.5617788e+09 0.11950797 0.030901596 115.60174 27.013585 6592.3040 2.4329637e+09 0.11697439 0.027778209 115.64816 26.909144 6594.5218 2.3102794e+09 0.11455274 0.025886072 115.69995 26.800101 6596.7396 2.1753445e+09 0.11193066 0.025723911 115.75652 26.686969 6598.9574 2.0463987e+09 0.11001273 0.024950086 115.81074 26.575850 6601.1751 1.9306466e+09 0.11001177 0.027128169 115.85715 26.471422 6603.3929 1.8291634e+09 0.10877810 0.026430671 115.90356 26.366994 6605.6107 1.7444967e+09 0.10804697 0.027177359 115.94997 26.262566 6607.8285 1.6655952e+09 0.10591499 0.024071101 115.99638 26.158138 6610.0462 1.5908826e+09 0.10271172 0.024047153 116.04341 26.052924 6612.2640 1.5147142e+09 0.10029192 0.024123496 116.09997 25.935441 6614.4818 1.4337613e+09 0.099093113 0.023608565 116.15654 25.817958 6616.6996 1.3577819e+09 0.097469556 0.023392094 116.20537 25.710413 6618.9173 1.2990290e+09 0.096456199 0.024463487 116.25179 25.605971 6621.1351 1.2458922e+09 0.095294771 0.025044667 116.29924 25.499992 6623.3529 1.1835539e+09 0.093399612 0.024622561 116.35145 25.386860 6625.5706 1.1193472e+09 0.091814646 0.026078560 116.40367 25.273728 6627.7884 1.0540402e+09 0.089701624 0.025621366 116.45078 25.168244 6630.0062 1.0004765e+09 0.088132208 0.025928317 116.49719 25.063816 6632.2240 9.5376439e+08 0.086245610 0.026059201 116.54531 24.955561 6634.4417 9.0185385e+08 0.084922368 0.026359066 116.59752 24.838077 6636.6595 8.4749323e+08 0.083766434 0.026293635 116.64972 24.720644 6638.8773 8.0136060e+08 0.082976912 0.025633421 116.69618 24.619948 6641.0951 7.6471006e+08 0.083823197 0.025148623 116.74259 24.519387 6643.3128 7.2885254e+08 0.083465889 0.025239853 116.78959 24.411898 6645.5306 6.8970617e+08 0.082640790 0.025700257 116.83746 24.294416 6647.7484 6.5424754e+08 0.081741538 0.026831809 116.88516 24.178814 6649.9662 6.1895525e+08 0.081113447 0.026301882 116.93158 24.078240 6652.1839 5.9075630e+08 0.080637466 0.027301129 116.97800 23.977667 6654.4017 5.6193630e+08 0.079872235 0.027865094 117.02747 23.868198 6656.6195 5.2662632e+08 0.078132935 0.028567134 117.07968 23.750715 6658.8373 4.9948228e+08 0.076604312 0.031545970 117.12970 23.636206 6661.0550 4.7604245e+08 0.075257978 0.032562978 117.17224 23.531778 6663.2728 4.5463061e+08 0.073999207 0.032407612 117.21479 23.427349 6665.4906 4.3799642e+08 0.073520467 0.027743301 117.26354 23.317330 6667.7084 4.1697523e+08 0.072888265 0.027363647 117.31575 23.204198 6669.9261 3.9524770e+08 0.072179435 0.027404507 117.36647 23.091066 6672.1439 3.7528758e+08 0.071875970 0.026963006 117.41433 22.977935 6674.3617 3.5037335e+08 0.070868513 0.029259886 117.46195 22.865203 6676.5794 3.3136750e+08 0.068536451 0.032087174 117.50450 22.760761 6678.7972 3.1418729e+08 0.067675913 0.030403399 117.54705 22.656320 6681.0150 2.9810276e+08 0.068673374 0.029668862 117.59205 22.547874 6683.2328 2.8523809e+08 0.069358628 0.031529706 117.63992 22.434742 6685.4505 2.7034433e+08 0.069271208 0.033180721 117.68755 22.323025 6687.6683 2.6171538e+08 0.067328275 0.033970174 117.73396 22.218596 6689.8861 2.5558914e+08 0.065315456 0.033218401 117.78037 22.114168 6692.1039 2.4551280e+08 0.064455715 0.032644718 117.82762 22.004717 6694.3216 2.3508701e+08 0.063818540 0.030810235 117.87549 21.891585 6696.5394 2.2453630e+08 0.063758530 0.029899900 117.92335 21.778453 6698.7572 2.1185953e+08 0.062848095 0.031257141 117.97121 21.665321 6700.9750 2.0576130e+08 0.061148492 0.031390873 118.01907 21.552189 6703.1927 1.9668853e+08 0.061082559 0.034157514 118.06693 21.434791 6705.4105 1.8849957e+08 0.061370984 0.037398404 118.11480 21.317308 6707.6283 1.7809817e+08 0.061260908 0.040096826 118.15639 21.211374 6709.8461 1.6608598e+08 0.060539421 0.040594412 118.19507 21.110813 6712.0638 1.5962812e+08 0.058578431 0.041948466 118.23464 21.009032 6714.2816 1.5874369e+08 0.056521854 0.047324579 118.28251 20.895883 6716.4994 1.5582815e+08 0.054771193 0.049136895 118.33038 20.782734 6718.7171 1.4770116e+08 0.052627898 0.050929320 118.37824 20.669599 6720.9349 1.3707989e+08 0.053035923 0.050311439 118.42611 20.556467 6723.1527 1.2431566e+08 0.052310266 0.049454106 118.47397 20.443335 6725.3705 1.1858892e+08 0.048300840 0.041344605 118.52183 20.330203 6727.5882 1.1548495e+08 0.047241413 0.040176676 118.56882 20.217071 6729.8060 1.1637567e+08 0.046275229 0.040508196 118.61233 20.103939 6732.0238 1.1475453e+08 0.044674410 0.043744589 118.65585 19.990807 6734.2416 1.0742447e+08 0.044264140 0.049339065 118.70329 19.873739 6736.4593 1.0002687e+08 0.046432697 0.052091569 118.75115 19.756255 6738.6771 91076774. 0.047902417 0.061048915 118.79638 19.641410 6740.8949 89822353. 0.047134474 0.065579124 118.83989 19.528279 6743.1127 87886928. 0.043652384 0.071807452 118.88475 19.415147 6745.3304 84033835. 0.040972052 0.078705799 118.93261 19.302015 6747.5482 84520662. 0.036667720 0.067172434 118.98043 19.188883 6749.7660 78953612. 0.035132792 0.072068206 119.02394 19.075751 6751.9838 75543389. 0.032176308 0.074127609 119.06746 18.962619 6754.2015 71749918. 0.031339974 0.075889385 119.11097 18.849487 6756.4193 69463492. 0.029010537 0.075245841 119.15448 18.736354 6758.6371 69019099. 0.029451063 0.075052509 119.19979 18.623215 6760.8549 67693272. 0.030297345 0.077691435 119.24767 18.510066 6763.0726 62197093. 0.036598551 0.076658948 119.29503 18.397422 6765.2904 55685439. 0.040839033 0.079584206 119.33854 18.288641 6767.5082 52608953. 0.042023910 0.081406743 119.38206 18.179861 6769.7259 47226332. 0.053012402 0.086215003 119.42557 18.067523 6771.9437 47044575. 0.036283366 0.091594079 119.46908 17.954391 6774.1615 47980697. 0.0057479197 0.096973156 119.51582 17.832866