# # 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 = 50.229051 km # Date (UTC) = 2015-11-22T10:07:39.393 # Date (julian) = 2457348.92198371 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.1909 6.6852451e+10 0.034996854 0.031737684 103.93384 28.124889 6500.2889 6.1112107e+10 0.042617924 0.032370321 103.98400 28.003659 6502.3868 5.5986233e+10 0.050571828 0.033002957 104.03340 27.884290 6504.4848 5.1617740e+10 0.058965908 0.033635593 104.08387 27.759221 6506.5828 4.7084553e+10 0.067611454 0.034268229 104.13562 27.627501 6508.6807 4.3011503e+10 0.076688289 0.034900865 104.18658 27.499928 6510.7787 3.9636834e+10 0.086400983 0.035533501 104.23598 27.380558 6512.8767 3.6931403e+10 0.096866693 0.036166137 104.28537 27.261189 6514.9746 3.4333001e+10 0.10785659 0.036798773 104.33690 27.126363 6517.0726 3.1679215e+10 0.11924763 0.037431409 104.38865 26.989937 6519.1706 2.9147109e+10 0.13109538 0.038064045 104.43855 26.866826 6521.2685 2.6912656e+10 0.14347632 0.038696682 104.48795 26.747457 6523.3665 2.5070183e+10 0.15254793 0.039269951 104.53589 26.629534 6525.4645 2.3527159e+10 0.15981037 0.039729205 104.58117 26.514281 6527.5624 2.2019492e+10 0.16645592 0.041124808 104.62645 26.399028 6529.6604 2.0432670e+10 0.17180542 0.043287752 104.67769 26.264262 6531.7584 1.8784761e+10 0.17605555 0.046332498 104.72944 26.127838 6533.8563 1.7142966e+10 0.17840256 0.047883505 104.77604 26.004989 6535.9543 1.5810031e+10 0.17829334 0.047810324 104.82132 25.885619 6538.0523 1.4732697e+10 0.17916517 0.049182133 104.86659 25.767759 6540.1502 1.3819155e+10 0.17836641 0.050925077 104.91187 25.652506 6542.2482 1.2958309e+10 0.17558503 0.051096469 104.95715 25.537254 6544.3462 1.2041781e+10 0.17334918 0.051925166 105.00849 25.402161 6546.4441 1.1143308e+10 0.17115075 0.052829977 105.06024 25.265737 6548.5421 1.0304666e+10 0.16934443 0.053829535 105.10674 25.146476 6550.6401 9.5916342e+09 0.16770650 0.055145626 105.15203 25.031205 6552.7380 8.9665014e+09 0.16619804 0.055401004 105.19731 24.914368 6554.8360 8.3704785e+09 0.16429806 0.054849923 105.24259 24.795000 6556.9340 7.8295168e+09 0.16210475 0.053875816 105.28787 24.675631 6559.0319 7.3578372e+09 0.15930867 0.052383578 105.32922 24.560184 6561.1299 6.9610807e+09 0.15651915 0.051308671 105.37038 24.444931 6563.2279 6.5686274e+09 0.15405973 0.049664783 105.41708 24.318597 6565.3258 6.1617536e+09 0.15167377 0.047948415 105.46883 24.182173 6567.4238 5.7590275e+09 0.14961117 0.046258859 105.51637 24.054168 6569.5218 5.3856658e+09 0.14759534 0.044886383 105.55753 23.938915 6571.6197 5.0756890e+09 0.14559297 0.044334016 105.59869 23.823662 6573.7177 4.8054634e+09 0.14288504 0.043081551 105.64384 23.704424 6575.8157 4.5531950e+09 0.14015357 0.041556346 105.68912 23.585055 6577.9136 4.2993585e+09 0.13724352 0.038785290 105.73534 23.459031 6580.0116 4.0403839e+09 0.13411524 0.036510042 105.78239 23.327311 6582.1096 3.7902084e+09 0.13108598 0.035263982 105.82870 23.202393 6584.2075 3.5683188e+09 0.12838299 0.034402466 105.87398 23.087140 6586.3055 3.3756698e+09 0.12620320 0.033167347 105.91926 22.971887 6588.4035 3.2033500e+09 0.12470675 0.033245196 105.96049 22.852585 6590.5014 3.0408931e+09 0.12267722 0.030129346 106.00165 22.733216 6592.5994 2.8925353e+09 0.12060865 0.027491339 106.04281 22.616129 6594.6974 2.7600501e+09 0.11839837 0.025789710 106.08397 22.500876 6596.7953 2.6328244e+09 0.11590279 0.025723658 106.12514 22.385623 6598.8933 2.5184783e+09 0.11402552 0.024980680 106.16630 22.270370 6600.9913 2.4119276e+09 0.11394774 0.027027703 106.20746 22.155118 6603.0892 2.2993047e+09 0.11292517 0.026610457 106.25271 22.028415 6605.1872 2.1796332e+09 0.11223716 0.026822075 106.29975 21.896695 6607.2851 2.0585237e+09 0.11082449 0.025143933 106.34344 21.774354 6609.3831 1.9522220e+09 0.10785069 0.023819735 106.38461 21.659100 6611.4811 1.8667633e+09 0.10509543 0.024651668 106.42577 21.543845 6613.5790 1.7876676e+09 0.10395710 0.023786044 106.46693 21.428575 6615.6770 1.7066507e+09 0.10238047 0.023272361 106.50810 21.313306 6617.7750 1.6320748e+09 0.10136990 0.023696191 106.54927 21.195121 6619.8729 1.5604223e+09 0.10047001 0.024736541 106.59043 21.075752 6621.9709 1.4960082e+09 0.099000202 0.024767634 106.63325 20.952904 6624.0689 1.4254800e+09 0.096875751 0.024899180 106.68029 20.821184 6626.1668 1.3483458e+09 0.095483378 0.026378330 106.72578 20.692030 6628.2648 1.2783816e+09 0.093707873 0.025810610 106.76282 20.576778 6630.3628 1.2185218e+09 0.092183045 0.025929196 106.79986 20.461526 6632.4607 1.1719378e+09 0.090698864 0.026087592 106.83990 20.346273 6634.5587 1.1247578e+09 0.089520455 0.026367597 106.88107 20.231020 6636.6567 1.0762763e+09 0.088329101 0.026294740 106.92223 20.115767 6638.7546 1.0324586e+09 0.087496855 0.025638765 106.96339 20.000515 6640.8526 9.8784512e+08 0.088205163 0.025166334 107.00455 19.885262 6642.9506 9.4384495e+08 0.088057547 0.025190596 107.04673 19.755722 6645.0485 8.9358672e+08 0.087312166 0.025474422 107.08907 19.624001 6647.1465 8.4582081e+08 0.086351686 0.026514915 107.13053 19.507551 6649.2445 8.0412860e+08 0.085422938 0.027296698 107.17170 19.396415 6651.3424 7.6879525e+08 0.085141466 0.026746593 107.21157 19.283992 6653.4404 7.3647737e+08 0.084727011 0.027750515 107.24862 19.168740 6655.5384 7.0604573e+08 0.083289536 0.027832671 107.28567 19.053488 6657.6363 6.8302210e+08 0.081644437 0.029639238 107.32635 18.938235 6659.7343 6.6105915e+08 0.080146979 0.031681423 107.36751 18.822982 6661.8323 6.4000826e+08 0.078615027 0.032958841 107.40920 18.700260 6663.9302 6.0814424e+08 0.077279498 0.032225423 107.45154 18.568539 6666.0282 5.7467175e+08 0.077375338 0.026914090 107.49215 18.442217 6668.1262 5.4526021e+08 0.076588070 0.027582421 107.52919 18.326964 6670.2241 5.2090894e+08 0.076027212 0.027224797 107.56624 18.211712 6672.3221 5.0693856e+08 0.075511250 0.027066292 107.60329 18.100142 6674.4201 4.9053280e+08 0.074261040 0.029309141 107.64034 17.988989 6676.5180 4.7092977e+08 0.071960506 0.032047590 107.67932 17.875912 6678.6160 4.5340205e+08 0.071114123 0.030524611 107.72048 17.760659 6680.7140 4.3296913e+08 0.071905457 0.029595590 107.76169 17.644750 6682.8119 4.1408513e+08 0.072614352 0.031044886 107.80403 17.513030 6684.9099 3.9125027e+08 0.072622620 0.032700265 107.84636 17.381310 6687.0079 3.6807219e+08 0.071111928 0.034338517 107.88386 17.268406 6689.1058 3.5443410e+08 0.068381525 0.033920765 107.92091 17.157269 6691.2038 3.4195344e+08 0.067454124 0.032953182 107.95796 17.044136 6693.3018 3.3068798e+08 0.066522328 0.031500568 107.99500 16.928883 6695.3997 3.1618167e+08 0.066019452 0.029786049 108.03234 16.812980 6697.4977 3.0488383e+08 0.065235933 0.030154249 108.07468 16.685964 6699.5957 2.9744673e+08 0.063629532 0.031040813 108.11702 16.558948 6701.6936 2.8596393e+08 0.061726670 0.032427185 108.15444 16.442867 6703.7916 2.7375053e+08 0.061694365 0.035656037 108.19148 16.327615 6705.8896 2.5468165e+08 0.061563082 0.038250051 108.23117 16.204127 6707.9875 2.4049566e+08 0.061026081 0.040045365 108.27351 16.072407 6710.0855 2.3215519e+08 0.059583323 0.040513227 108.31233 15.948392 6712.1835 2.2472978e+08 0.057211584 0.042170566 108.34526 15.837255 6714.2814 2.2106018e+08 0.054865274 0.047324565 108.37818 15.726118 6716.3794 2.1309590e+08 0.052810116 0.048960156 108.41500 15.614982 6718.4773 2.0262209e+08 0.050316157 0.050555849 108.45205 15.503845 6720.5753 1.9333728e+08 0.049687149 0.050353106 108.49183 15.382098 6722.6733 1.8654505e+08 0.048819843 0.049772853 108.53416 15.250378 6724.7712 1.8064882e+08 0.044914476 0.043486253 108.57444 15.126681 6726.8692 1.7153567e+08 0.042555800 0.040959207 108.61149 15.015544 6728.9672 1.6357492e+08 0.042055766 0.040998910 108.64853 14.904407 6731.0651 1.5593927e+08 0.040100533 0.041879676 108.68614 14.778021 6733.1631 1.4974758e+08 0.038804323 0.044809885 108.72378 14.651006 6735.2611 1.4587797e+08 0.039133998 0.049570585 108.76092 14.533807 6737.3590 1.4241119e+08 0.040605954 0.055279307 108.79797 14.418554 6739.4570 1.3921920e+08 0.040927481 0.063385844 108.83525 14.298535 6741.5550 1.3619307e+08 0.039295947 0.067341514 108.87288 14.171519 6743.6529 1.2903402e+08 0.034943752 0.075452165 108.91035 14.048941 6745.7509 1.2112683e+08 0.033099297 0.078882562 108.94740 13.937804 6747.8489 1.1809178e+08 0.028989262 0.067068927 108.98444 13.826668 6749.9468 1.1588672e+08 0.026663758 0.072018687 109.02599 13.702033 6752.0448 1.1207619e+08 0.023903484 0.074082628 109.06833 13.575017 6754.1428 1.0420411e+08 0.022728132 0.075983877 109.10726 13.444594 6756.2407 99288997. 0.020296148 0.074786363 109.14490 13.312873 6758.3387 95008142. 0.020219494 0.074421557 109.17971 13.193473 6760.4367 90059440. 0.020766973 0.076893980 109.21264 13.082337 6762.5346 84592535. 0.025197076 0.077188434 109.24716 12.968514 6764.6326 79131062. 0.027793609 0.079513592 109.28950 12.841498 6766.7306 75877564. 0.028287663 0.081366305 109.33164 12.714483 6768.8285 74825688. 0.024083919 0.083837286 109.36927 12.587467 6770.9265 72014620. 0.020046057 0.089126870 109.40691 12.460451 6773.0245 69112051. 0.015950126 0.094215360 109.44023 12.347993 6775.1224 69318622. 0.011880431 0.099303850 109.47316 12.236840 6777.2204 67785071. 0.0072461846 0.10439234 109.51069 12.117935 6779.3184 63948664. 0.0015996032 0.10948083 109.55303 11.990919 6781.4163 59756032. -0.0056710143 0.11456932 109.59366 11.863911 6783.5143 53146545. -0.018490651 0.11965781 109.63129 11.736916 6785.6123 51421685. -0.067659419 0.12474630 109.66780 11.613674 6787.7102 51785144. -0.034168037 0.12983479 109.70074 11.502520 6789.8082 52067116. 0.039808831 0.13492328 109.73367 11.391367