# # 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 = 49.957703 km # Date (UTC) = 2013-01-22T10:16:22.031 # Date (julian) = 2456314.92803277 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.1698 7.4051006e+10 0.043511217 0.032334416 95.497392 48.881384 6502.2345 6.7243539e+10 0.051988101 0.032957025 95.617864 48.733905 6504.2992 6.0738570e+10 0.060681204 0.033579634 95.742072 48.582694 6506.3640 5.5061142e+10 0.069727140 0.034202243 95.863844 48.433915 6508.4287 5.0098381e+10 0.079180300 0.034824852 95.982678 48.288075 6510.4934 4.5647778e+10 0.089043393 0.035447460 96.101512 48.142234 6512.5581 4.1666249e+10 0.099344571 0.036070069 96.220346 47.996393 6514.6228 3.8091987e+10 0.11008360 0.036692678 96.335125 47.846499 6516.6875 3.4804406e+10 0.12121239 0.037315287 96.448556 47.695258 6518.7522 3.1753776e+10 0.13269203 0.037937896 96.561987 47.548872 6520.8169 2.9039899e+10 0.14457709 0.038560505 96.674644 47.403805 6522.8817 2.6840333e+10 0.15454870 0.039148124 96.771868 47.274173 6524.9464 2.4992665e+10 0.16217779 0.039763164 96.869092 47.144541 6527.0111 2.3335213e+10 0.16805811 0.040724520 96.980705 47.000518 6529.0758 2.1643404e+10 0.17221675 0.042356530 97.093939 46.854482 6531.1405 1.9922660e+10 0.17620515 0.045433201 97.201950 46.703270 6533.2052 1.8317622e+10 0.18007398 0.047606803 97.310963 46.553050 6535.2699 1.6827355e+10 0.18117581 0.048107197 97.424394 46.407210 6537.3347 1.5569647e+10 0.18120592 0.048843001 97.529334 46.266773 6539.3994 1.4582124e+10 0.18010875 0.050127054 97.617300 46.137139 6541.4641 1.3721071e+10 0.17786034 0.051176031 97.708747 46.003756 6543.5288 1.2883818e+10 0.17545849 0.051520678 97.816776 45.852514 6545.5935 1.1954614e+10 0.17325995 0.052460884 97.924804 45.703013 6547.6582 1.1026793e+10 0.17154118 0.053537675 98.032832 45.557172 6549.7229 1.0267295e+10 0.16964293 0.054703010 98.131415 45.418963 6551.7877 9.6598414e+09 0.16763073 0.055512228 98.219381 45.289331 6553.8524 9.1217471e+09 0.16505436 0.054906595 98.311906 45.154659 6555.9171 8.5798682e+09 0.16259141 0.054082801 98.414536 45.008818 6557.9818 7.9851096e+09 0.16062414 0.053250718 98.514674 44.860509 6560.0465 7.4128578e+09 0.15805493 0.052232380 98.611882 44.709298 6562.1112 6.9307652e+09 0.15498468 0.050774076 98.703470 44.574018 6564.1759 6.5437027e+09 0.15162673 0.048691866 98.791433 44.449014 6566.2406 6.1877668e+09 0.14891096 0.047046752 98.883545 44.312258 6568.3054 5.8163385e+09 0.14670952 0.045490966 98.980772 44.161014 6570.3701 5.4624466e+09 0.14460200 0.044764213 99.069712 44.022664 6572.4348 5.1505071e+09 0.14210616 0.043981166 99.153047 43.893032 6574.4995 4.8699381e+09 0.13901662 0.042615098 99.242448 43.756323 6576.5642 4.5844843e+09 0.13589038 0.040721974 99.339676 43.610481 6578.6289 4.3047617e+09 0.13231509 0.037656468 99.428772 43.474127 6580.6936 4.0636339e+09 0.12883861 0.035879731 99.512108 43.344495 6582.7584 3.8664548e+09 0.12586700 0.035087426 99.599056 43.207969 6584.8231 3.6626098e+09 0.12321224 0.034067156 99.690884 43.062128 6586.8878 3.4535646e+09 0.12101659 0.033159820 99.777838 42.925591 6588.9525 3.2697480e+09 0.11920740 0.033061843 99.861173 42.795959 6591.0172 3.1071272e+09 0.11689921 0.029182495 99.948024 42.659616 6593.0819 2.9469353e+09 0.11499461 0.027026061 100.03985 42.513775 6595.1466 2.7869253e+09 0.11273001 0.025638777 100.12429 42.377054 6597.2113 2.6322900e+09 0.11040023 0.025656034 100.20299 42.247420 6599.2761 2.5037643e+09 0.10881959 0.024946334 100.27984 42.117787 6601.3408 2.3992625e+09 0.10857167 0.027206175 100.35391 41.988155 6603.4055 2.2890047e+09 0.10729983 0.026423227 100.43230 41.854587 6605.4702 2.1720287e+09 0.10667752 0.027059504 100.52412 41.708746 6607.5349 2.0550574e+09 0.10495369 0.024650742 100.60900 41.569259 6609.5996 1.9485103e+09 0.10197874 0.023884049 100.68306 41.439649 6611.6643 1.8503785e+09 0.099357590 0.024534803 100.75998 41.306287 6613.7291 1.7506001e+09 0.098321027 0.023841082 100.84640 41.160446 6615.7938 1.6556316e+09 0.096785770 0.023275954 100.92814 41.020762 6617.8585 1.5691424e+09 0.095951841 0.023723876 101.00221 40.891130 6619.9232 1.4983607e+09 0.095082618 0.024748666 101.07629 40.762516 6621.9879 1.4438301e+09 0.093583212 0.024762000 101.15036 40.637513 6624.0526 1.3838657e+09 0.091445375 0.024890478 101.22518 40.510937 6626.1173 1.3129745e+09 0.090113519 0.026441408 101.31160 40.359696 6628.1820 1.2426324e+09 0.088366594 0.025777008 101.39448 40.212962 6630.2468 1.1697114e+09 0.087012785 0.025928910 101.46393 40.083328 6632.3115 1.1133801e+09 0.085582606 0.026069694 101.53360 39.953920 6634.3762 1.0780713e+09 0.084373735 0.026354284 101.60768 39.828917 6636.4409 1.0368657e+09 0.083209844 0.026378532 101.68176 39.703914 6638.5056 9.9041842e+08 0.082501831 0.025649614 101.76200 39.555593 6640.5703 9.4056916e+08 0.083092535 0.025200871 101.84259 39.405332 6642.6350 8.8959078e+08 0.083197541 0.025177683 101.91204 39.280328 6644.6998 8.5360534e+08 0.082407170 0.025419235 101.98148 39.155324 6646.7645 8.2608727e+08 0.081411865 0.026315862 102.05093 39.026260 6648.8292 7.9550385e+08 0.080375619 0.027519342 102.12038 38.896628 6650.8939 7.6271872e+08 0.080105162 0.026459875 102.19425 38.755367 6652.9586 7.2367351e+08 0.079909078 0.027514273 102.26987 38.609526 6655.0233 6.8515042e+08 0.078889654 0.027619854 102.34015 38.477724 6657.0880 6.5033967e+08 0.077161666 0.029003231 102.40959 38.348092 6659.1528 6.2127450e+08 0.075750649 0.031802735 102.47577 38.221729 6661.2175 5.9926280e+08 0.074486078 0.032645709 102.54059 38.096726 6663.2822 5.7368066e+08 0.073346027 0.032405014 102.61130 37.957407 6665.3469 5.4623845e+08 0.072992113 0.027978738 102.68690 37.806192 6667.4116 5.1773787e+08 0.072528171 0.027254647 102.75823 37.673183 6669.4763 4.8872768e+08 0.071654949 0.027866491 102.82768 37.548182 6671.5410 4.6877285e+08 0.071569589 0.026873059 102.89465 37.423180 6673.6057 4.4884118e+08 0.070951011 0.028365153 102.95946 37.298177 6675.6705 4.2981154e+08 0.069036225 0.031082531 103.02630 37.163344 6677.7352 4.1037735e+08 0.067854700 0.031313095 103.09652 37.012101 6679.7999 3.8430840e+08 0.068118829 0.029606782 103.16391 36.874588 6681.8646 3.6785067e+08 0.069089965 0.030320665 103.22873 36.749585 6683.9293 3.5246619e+08 0.069524059 0.032550498 103.29355 36.622901 6685.9940 3.4567659e+08 0.069129881 0.033754774 103.35837 36.493268 6688.0587 3.3597639e+08 0.066884966 0.033798749 103.42428 36.360339 6690.1235 3.1940777e+08 0.065253851 0.033101716 103.49450 36.214498 6692.1882 3.0420590e+08 0.064426884 0.032546823 103.56119 36.075993 6694.2529 2.8504759e+08 0.063804074 0.030906603 103.62137 35.950990 6696.3176 2.7314234e+08 0.063746611 0.029807739 103.68245 35.825098 6698.3823 2.6461284e+08 0.062891878 0.030742576 103.74726 35.695466 6700.4470 2.5646119e+08 0.061345359 0.030999285 103.81193 35.565983 6702.5117 2.4953376e+08 0.060409442 0.033285351 103.87212 35.440980 6704.5764 2.3893983e+08 0.060760133 0.036460619 103.93231 35.315977 6706.6412 2.2828985e+08 0.060629385 0.039562293 104.00125 35.172800 6708.7059 2.2018051e+08 0.060206826 0.040812250 104.07116 35.027297 6710.7706 2.1075683e+08 0.058783702 0.040647328 104.12672 34.897664 6712.8353 2.0148459e+08 0.056934987 0.043380833 104.18227 34.768032 6714.9000 1.9131695e+08 0.055088710 0.047371072 104.25045 34.624445 6716.9647 1.8205087e+08 0.053210678 0.049822315 104.32057 34.478825 6719.0294 1.7293926e+08 0.051035128 0.051341867 104.38076 34.353801 6721.0942 1.6817421e+08 0.051578795 0.050332268 104.44095 34.228798 6723.1589 1.6235521e+08 0.050576065 0.049457547 104.49720 34.099862 6725.2236 1.5635200e+08 0.046623618 0.041436360 104.55276 33.970231 6727.2883 1.5037444e+08 0.045418649 0.040576295 104.61842 33.829440 6729.3530 1.4458011e+08 0.044983535 0.040810138 104.68862 33.683628 6731.4177 1.4214497e+08 0.043373436 0.042581368 104.74655 33.555253 6733.4824 1.3532129e+08 0.042440309 0.046543589 104.80211 33.430249 6735.5471 1.2852118e+08 0.043465220 0.049874271 104.85767 33.305246 6737.6119 1.2109475e+08 0.045001131 0.056084668 104.91323 33.180243 6739.6766 1.1554720e+08 0.045255198 0.063654552 104.97358 33.041647 6741.7413 1.1336118e+08 0.043520814 0.067872891 105.03840 32.890406 6743.8060 1.0869289e+08 0.039220965 0.076484711 105.09704 32.756658 6745.8707 1.0884411e+08 0.037900069 0.078932928 105.15260 32.631655 6747.9354 1.0834136e+08 0.033816061 0.067039129 105.21285 32.496092 6750.0001 1.0768870e+08 0.031240296 0.072004376 105.27767 32.350251 6752.0649 1.0684986e+08 0.028563852 0.074059425 105.33642 32.218068 6754.1296 1.0041407e+08 0.027558166 0.076005107 105.39197 32.093066 6756.1943 98779856. 0.025162954 0.074666829 105.44944 31.957738 6758.2590 94734834. 0.024960886 0.074253006 105.50886 31.811897 6760.3237 90250332. 0.025534326 0.076678572 105.56579 31.679479 6762.3884 86690367. 0.029787437 0.077424285 105.62134 31.554476 6764.4531 78092758. 0.032541811 0.079504994 105.67877 31.419383 6766.5179 72531618. 0.033378880 0.080885135 105.73819 31.273543 6768.5826 71313757. 0.029562774 0.082952229 105.79516 31.140890 6770.6473 67245161. 0.025567894 0.088449633 105.85072 31.015888 6772.7120 66534214. 0.021876419 0.093457471 105.90809 30.878491 6774.7767 63946720. 0.018133888 0.098465309 105.96750 30.727279 6776.8414 58694909. 0.014289598 0.10347315 106.02163 30.592347 6778.9061 58575973. 0.010410497 0.10848099 106.07256 30.467343 6780.9708 56039659. 0.0062820280 0.11348882 106.12741 30.332728 6783.0356 54959705. 0.0012855536 0.11849666 106.18682 30.186887 6785.1003 52828485. -0.010259847 0.12350450 106.24106 30.053757 6787.1650 49597059. -0.0077706235 0.12851234 106.29199 29.928755 6789.2297 47860517. 0.0034571535 0.13352017 106.34674 29.794376