# # 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 = 39.369343 km # Date (UTC) = 2010-12-07T09:10:13.397 # Date (julian) = 2455537.88209950 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.3408 3.1020939e+11 0.035661436 0.031179801 -22.562086 48.076993 6498.4919 2.4739492e+11 0.043558175 0.031828451 -22.663375 47.971484 6500.6430 1.9871905e+11 0.051343895 0.032477102 -22.764664 47.865975 6502.7941 1.5860952e+11 0.059011193 0.033125752 -22.856411 47.770404 6504.9451 1.3001620e+11 0.066711673 0.033774402 -22.946456 47.676607 6507.0962 1.1003332e+11 0.074686753 0.034423052 -23.038562 47.579891 6509.2473 9.3879425e+10 0.082988382 0.035071703 -23.139850 47.470162 6511.3984 8.0524075e+10 0.091715719 0.035720353 -23.241139 47.360433 6513.5494 6.9766377e+10 0.10103081 0.036369003 -23.330215 47.263680 6515.7005 6.1725491e+10 0.11124768 0.037017654 -23.416496 47.169895 6517.8516 5.5295463e+10 0.12233601 0.037666304 -23.505000 47.074375 6520.0026 4.9679091e+10 0.13421303 0.038314954 -23.606289 46.968866 6522.1537 4.4582256e+10 0.14638073 0.038957504 -23.707577 46.863357 6524.3048 3.9694973e+10 0.15346869 0.039535239 -23.805580 46.754562 6526.4559 3.5282249e+10 0.15979003 0.040146007 -23.902648 46.644833 6528.6069 3.1497405e+10 0.16590254 0.041923967 -23.993768 46.541628 6530.7580 2.8468987e+10 0.17117734 0.044889897 -24.076299 46.447844 6532.9091 2.6103363e+10 0.17637318 0.047443635 -24.158829 46.354059 6535.0602 2.3859706e+10 0.17861241 0.048198201 -24.252179 46.251546 6537.2112 2.1647982e+10 0.17870687 0.048784811 -24.349262 46.146021 6539.3623 1.9600192e+10 0.17773864 0.050082184 -24.440897 46.043487 6541.5134 1.7902427e+10 0.17558451 0.051160046 -24.523427 45.945951 6543.6644 1.6493789e+10 0.17323317 0.051556280 -24.605957 45.848414 6545.8155 1.5181701e+10 0.17090899 0.052462873 -24.695799 45.745227 6547.9666 1.3884627e+10 0.16946668 0.053654941 -24.788648 45.639718 6550.1177 1.2650997e+10 0.16794002 0.055014822 -24.876723 45.536914 6552.2687 1.1626379e+10 0.16606141 0.055519125 -24.955502 45.439379 6554.4198 1.0796481e+10 0.16370778 0.054841190 -25.034281 45.341844 6556.5709 1.0043519e+10 0.16140810 0.053929195 -25.122536 45.238938 6558.7220 9.2917913e+09 0.15881327 0.052624109 -25.215384 45.133429 6560.8730 8.5769497e+09 0.15582668 0.051487162 -25.303958 45.031481 6563.0241 7.9647550e+09 0.15312477 0.049900487 -25.382747 44.937684 6565.1752 7.4481853e+09 0.15021588 0.048119485 -25.461536 44.843887 6567.3262 6.9517550e+09 0.14743074 0.046341337 -25.546609 44.739913 6569.4773 6.4178614e+09 0.14481846 0.044883491 -25.635237 44.630183 6571.6284 5.8966115e+09 0.14236761 0.044331649 -25.720203 44.524746 6573.7795 5.4512310e+09 0.13904794 0.043031980 -25.795230 44.430962 6575.9305 5.0854419e+09 0.13553501 0.041441086 -25.870257 44.337177 6578.0816 4.7557024e+09 0.13174779 0.038520742 -25.953494 44.233769 6580.2327 4.4263824e+09 0.12764178 0.036305720 -26.042122 44.124040 6582.3838 4.0982780e+09 0.12396278 0.035189364 -26.129762 44.015300 6584.5348 3.7751854e+09 0.12085356 0.034224169 -26.214168 43.909791 6586.6859 3.4784557e+09 0.11841827 0.033162430 -26.298575 43.804282 6588.8370 3.2173836e+09 0.11657708 0.033100420 -26.374872 43.705666 6590.9880 3.0027693e+09 0.11413492 0.029224144 -26.449900 43.608129 6593.1391 2.8246087e+09 0.11199259 0.026972881 -26.526797 43.509003 6595.2902 2.6397455e+09 0.10945709 0.025653665 -26.611216 43.403478 6597.4413 2.4583135e+09 0.10708164 0.025583481 -26.695635 43.297954 6599.5923 2.2861005e+09 0.10576099 0.024965356 -26.769148 43.199059 6601.7434 2.1549113e+09 0.10522454 0.027395794 -26.840424 43.101524 6603.8945 2.0341280e+09 0.10350534 0.026133742 -26.913856 43.002679 6606.0456 1.9015248e+09 0.10293885 0.027422099 -26.998264 42.897170 6608.1966 1.7623744e+09 0.10047880 0.023727173 -27.082672 42.791661 6610.3477 1.6299284e+09 0.097370536 0.024335200 -27.156644 42.695470 6612.4988 1.5304641e+09 0.095257286 0.023948086 -27.227920 42.601685 6614.6498 1.4455179e+09 0.093798244 0.023492773 -27.300346 42.505844 6616.8009 1.3659924e+09 0.091967108 0.023408003 -27.380532 42.396113 6618.9520 1.2808041e+09 0.090886696 0.024489664 -27.460719 42.286383 6621.1031 1.1968643e+09 0.089732599 0.025055285 -27.537700 42.179859 6623.2541 1.1166129e+09 0.087835435 0.024585980 -27.613667 42.074350 6625.4052 1.0401776e+09 0.086165619 0.025881144 -27.687808 41.971946 6627.5563 9.7763808e+08 0.083829393 0.025531694 -27.759093 41.874398 6629.7074 9.2593422e+08 0.082195777 0.025981212 -27.830379 41.776850 6631.8584 8.7504271e+08 0.080250962 0.026017965 -27.905057 41.673532 6634.0095 8.2310227e+08 0.078855852 0.026327536 -27.981024 41.568023 6636.1606 7.7026446e+08 0.077749789 0.026487395 -28.053991 41.465347 6638.3116 7.2282623e+08 0.077145408 0.025658065 -28.121515 41.367812 6640.4627 6.8563063e+08 0.077629757 0.025214037 -28.189040 41.270276 6642.6138 6.5255633e+08 0.077749696 0.025176814 -28.262386 41.167242 6644.7649 6.2200726e+08 0.077010058 0.025426272 -28.338353 41.061733 6646.9159 5.8953667e+08 0.076115287 0.026394267 -28.414319 40.956224 6649.0670 5.5433867e+08 0.075199623 0.027541314 -28.490286 40.850715 6651.2181 5.1830011e+08 0.075153736 0.026651296 -28.566253 40.745206 6653.3692 4.8745833e+08 0.074932265 0.027714140 -28.634202 40.647264 6655.5202 4.6639077e+08 0.073579630 0.027825176 -28.701736 40.549715 6657.6713 4.4445639e+08 0.072088176 0.029679802 -28.770472 40.449894 6659.8224 4.2317347e+08 0.070771392 0.031663050 -28.842218 40.344385 6661.9734 3.9700948e+08 0.069450231 0.033030748 -28.913964 40.238876 6664.1245 3.7259801e+08 0.068302123 0.031750469 -28.985711 40.129502 6666.2756 3.5073600e+08 0.068436019 0.026962298 -29.057457 40.019772 6668.4267 3.2934886e+08 0.067573834 0.027848345 -29.129204 39.912349 6670.5777 3.0980543e+08 0.067355745 0.027060975 -29.200950 39.806840 6672.7288 2.8773914e+08 0.067096025 0.027302032 -29.271285 39.703406 6674.8799 2.7339562e+08 0.065664648 0.029697032 -29.335058 39.609622 6677.0310 2.6005728e+08 0.063419629 0.032314207 -29.398832 39.515837 6679.1820 2.4820579e+08 0.062930168 0.030117349 -29.466681 39.413901 6681.3331 2.3460049e+08 0.064023274 0.029912910 -29.538427 39.304170 6683.4842 2.1859903e+08 0.064614086 0.031898147 -29.610174 39.195039 6685.6352 2.0534151e+08 0.064350545 0.033375818 -29.681920 39.089529 6687.7863 1.9374011e+08 0.062229716 0.033904361 -29.753667 38.984019 6689.9374 1.8346995e+08 0.060197127 0.033172218 -29.822153 38.878510 6692.0885 1.7486496e+08 0.059127111 0.032662597 -29.889679 38.773001 6694.2395 1.6549060e+08 0.058224062 0.030925298 -29.957209 38.665785 6696.3906 1.5566487e+08 0.057942689 0.029838077 -30.024745 38.556040 6698.5417 1.4671024e+08 0.056800306 0.030961343 -30.092027 38.446834 6700.6928 1.3800782e+08 0.054928685 0.031181557 -30.152049 38.353050 6702.8438 1.3338181e+08 0.054181795 0.033550534 -30.212070 38.259266 6704.9949 1.2569137e+08 0.054229268 0.036666104 -30.274854 38.161166 6707.1460 1.2036375e+08 0.053695494 0.040165915 -30.342380 38.055657 6709.2970 1.1604293e+08 0.052850859 0.040943605 -30.409906 37.950142 6711.4481 1.0902342e+08 0.050800039 0.041202073 -30.477432 37.840423 6713.5992 1.0598015e+08 0.048611919 0.045853785 -30.544958 37.730692 6715.7503 99768387. 0.046624781 0.048145941 -30.612484 37.623617 6717.9013 96711384. 0.044479472 0.049818516 -30.680009 37.518108 6720.0524 93032250. 0.043202449 0.050413693 -30.746439 37.412599 6722.2035 86429337. 0.042848344 0.050353642 -30.809744 37.307090 6724.3546 80339066. 0.039725818 0.046965863 -30.873050 37.201581 6726.5056 74269965. 0.036239173 0.040955928 -30.936356 37.092316 6728.6567 70645217. 0.035416265 0.040558866 -30.999662 36.982587 6730.8078 69259392. 0.033429793 0.041486465 -31.065165 36.875055 6732.9589 69933314. 0.031765356 0.043916730 -31.132691 36.769546 6735.1099 69847296. 0.030741736 0.049410124 -31.199580 36.664034 6737.2610 64729921. 0.028221653 0.054966974 -31.262895 36.558509 6739.4121 58367981. 0.0021765463 0.063330845 -31.326210 36.452984 6741.5631 53781034. 0.021051021 0.067364804 -31.389517 36.347472 6743.7142 52769750. 0.067251674 0.075865510 -31.452822 36.241963