# # 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 = 53.671555 km # Date (UTC) = 2012-01-30T10:14:05.740 # Date (julian) = 2455956.92645533 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.2597 2.4185968e+11 0.043153895 0.031758423 87.204211 59.901365 6500.9288 1.9142770e+11 0.053451690 0.032563294 87.591794 59.636356 6503.5980 1.5136851e+11 0.063678136 0.033368165 87.915177 59.407375 6506.2671 1.2028083e+11 0.073872339 0.034173037 88.252734 59.159399 6508.9362 9.8439864e+10 0.084272534 0.034977908 88.575439 58.919675 6511.6054 8.0976169e+10 0.094929469 0.035782779 88.894122 58.679788 6514.2745 6.7629083e+10 0.10605403 0.036587650 89.218213 58.428181 6516.9436 5.6625953e+10 0.11763163 0.037392521 89.518695 58.190119 6519.6128 4.8205252e+10 0.12993410 0.038197392 89.843438 57.934262 6522.2819 4.2072662e+10 0.14250056 0.038991075 90.119054 57.716393 6524.9511 3.6753758e+10 0.14975603 0.039764828 90.387208 57.498521 6527.6202 3.2396971e+10 0.15502595 0.041166740 90.707037 57.221291 6530.2893 2.8509900e+10 0.16010175 0.044233756 90.969394 57.000830 6532.9585 2.5215127e+10 0.16463777 0.047484892 91.229161 56.776535 6535.6276 2.2749673e+10 0.16698572 0.047952044 91.484091 56.550316 6538.2967 2.0599239e+10 0.17011054 0.049301179 91.732263 56.327282 6540.9659 1.8453031e+10 0.17136095 0.051310409 91.988546 56.097311 6543.6350 1.6428838e+10 0.17111098 0.051548556 92.284345 55.827600 6546.3042 1.4601583e+10 0.16951049 0.052714795 92.518919 55.601402 6548.9733 1.3059942e+10 0.16719053 0.053958304 92.753548 55.375152 6551.6424 1.1897882e+10 0.16502356 0.055461253 92.988176 55.148902 6554.3116 1.0826522e+10 0.16221754 0.054838918 93.217311 54.922686 6556.9807 9.8598115e+09 0.15977041 0.053868944 93.443532 54.696465 6559.6498 8.9414800e+09 0.15671063 0.052313833 93.669784 54.470215 6562.3190 8.1782450e+09 0.15353297 0.050576387 93.892863 54.246638 6564.9881 7.5743304e+09 0.15066519 0.048323785 94.074417 54.058105 6567.6572 7.0408903e+09 0.14810523 0.046061467 94.279136 53.845515 6570.3264 6.5469857e+09 0.14615209 0.044782309 94.493248 53.619295 6572.9955 6.0242469e+09 0.14401170 0.043660046 94.702739 53.393044 6575.6647 5.4909933e+09 0.14142799 0.041707846 94.912226 53.166797 6578.3338 5.0292622e+09 0.13856615 0.038122511 95.121668 52.940600 6581.0029 4.6519677e+09 0.13538220 0.035595721 95.294914 52.740934 6583.6721 4.3223562e+09 0.13280013 0.034681495 95.477002 52.532122 6586.3412 4.0243142e+09 0.12996918 0.033166885 95.676108 52.305872 6589.0103 3.7346849e+09 0.12728595 0.033025455 95.867367 52.081032 6591.6795 3.4743626e+09 0.12380766 0.028435195 96.027935 51.885556 6594.3486 3.2458308e+09 0.12016838 0.025981149 96.208236 51.671200 6597.0178 3.0268160e+09 0.11618060 0.025717124 96.400970 51.444950 6599.6869 2.8271921e+09 0.11352314 0.024971043 96.584835 51.225668 6602.3560 2.6432882e+09 0.11163292 0.027212813 96.738451 51.030152 6605.0252 2.4846466e+09 0.10935816 0.026686155 96.916457 50.810256 6607.6943 2.3448852e+09 0.10658185 0.024336009 97.082323 50.602497 6610.3634 2.1933319e+09 0.10276207 0.024350237 97.239718 50.401788 6613.0326 2.0641648e+09 0.10113190 0.023585543 97.415690 50.175537 6615.7017 1.9439461e+09 0.099737460 0.023273121 97.563045 49.979269 6618.3709 1.8186685e+09 0.099176495 0.024050832 97.725600 49.767081 6621.0400 1.7125839e+09 0.098451428 0.025076193 97.888843 49.551615 6623.7091 1.6029243e+09 0.096725187 0.024754545 98.028502 49.356098 6626.3783 1.4997288e+09 0.095275311 0.026108964 98.193792 49.132379 6629.0474 1.4101479e+09 0.093673097 0.026100535 98.341151 48.928389 6631.7165 1.3151627e+09 0.091889596 0.026003551 98.488958 48.721461 6634.3857 1.2327259e+09 0.090294924 0.026354975 98.653072 48.491422 6637.0548 1.1607929e+09 0.088607791 0.026134568 98.785745 48.302891 6639.7239 1.0954400e+09 0.087974963 0.025369320 98.918416 48.109702 6642.3931 1.0403534e+09 0.087970805 0.025167782 99.057306 47.906981 6645.0622 9.8052566e+08 0.086703015 0.025480832 99.215434 47.681990 6647.7314 9.2181392e+08 0.085179972 0.026822842 99.348108 47.486474 6650.4005 8.7122043e+08 0.084011357 0.026346921 99.476529 47.290958 6653.0696 8.2300589e+08 0.083206697 0.027561212 99.608136 47.090019 6655.7388 7.7787135e+08 0.081063236 0.027915476 99.767307 46.863823 6658.4079 7.3476146e+08 0.078825139 0.030784505 99.893562 46.667789 6661.0770 6.9530259e+08 0.076698219 0.032574188 100.01541 46.472272 6663.7462 6.5848602e+08 0.074766905 0.032276429 100.13794 46.273099 6666.4153 6.2256169e+08 0.074472303 0.026989524 100.28877 46.046847 6669.0845 5.8354184e+08 0.073250127 0.028268965 100.40985 45.849078 6671.7536 5.5042658e+08 0.073538959 0.026876088 100.52854 45.653582 6674.4227 5.2414405e+08 0.072663588 0.029311388 100.64725 45.458493 6677.0919 4.9944021e+08 0.070333153 0.032227626 100.76595 45.269958 6679.7610 4.7438761e+08 0.070508436 0.029638916 100.89960 45.052432 6682.4301 4.4711452e+08 0.071751564 0.030753183 101.02867 44.834838 6685.0993 4.2277242e+08 0.072003846 0.032809694 101.14039 44.639357 6687.7684 3.9957173e+08 0.069903350 0.033914350 101.25209 44.450848 6690.4375 3.8198337e+08 0.067844522 0.033065720 101.36779 44.258342 6693.1067 3.6261500e+08 0.067062371 0.031567490 101.48747 44.057391 6695.7758 3.4443590e+08 0.066795645 0.029716965 101.61317 43.822762 6698.4450 3.2700744e+08 0.066036225 0.030828573 101.72565 43.631721 6701.1141 3.0870496e+08 0.064267664 0.031576855 101.83737 43.439600 6703.7832 2.9244894e+08 0.064547771 0.035635129 101.94853 43.244654 6706.4524 2.7845517e+08 0.064941617 0.039233716 102.05324 43.056160 6709.1215 2.6445401e+08 0.064741985 0.041055260 102.15798 42.863106 6711.7906 2.5228073e+08 0.062960483 0.041591767 102.26272 42.667587 6714.4598 2.3850862e+08 0.061090069 0.047337975 102.36746 42.472071 6717.1289 2.2311883e+08 0.059467474 0.049866294 102.48865 42.252434 6719.7981 2.0914240e+08 0.058329730 0.050611631 102.60195 42.044362 6722.4672 1.9712330e+08 0.058880282 0.050027636 102.70558 41.848846 6725.1363 1.9031527e+08 0.054879671 0.041490863 102.80334 41.653327 6727.8055 1.8378531e+08 0.054125754 0.039887278 102.90616 41.462917 6730.4746 1.7860227e+08 0.053097723 0.041029638 103.00883 41.272352 6733.1437 1.7194597e+08 0.052086453 0.044704699 103.10659 41.076834 6735.8129 1.6297721e+08 0.053602805 0.050156358 103.22122 40.847571 6738.4820 1.5188813e+08 0.055697618 0.059974785 103.32544 40.643797 6741.1511 1.4325463e+08 0.054879631 0.066189774 103.42154 40.453606 6743.8203 1.3507942e+08 0.049873309 0.076581061 103.51231 40.258090 6746.4894 1.2956150e+08 0.046159232 0.073297199 103.60870 40.068226 6749.1586 1.2327429e+08 0.043371612 0.072234520 103.70644 39.877112 6751.8277 1.1696076e+08 0.038352405 0.074061625 103.80420 39.681594 6754.4968 1.1548324e+08 0.035324774 0.075414502 103.89539 39.486078 6757.1660 1.1213433e+08 0.031138505 0.076236382 103.99541 39.274930 6759.8351 1.0792250e+08 0.030938952 0.076021480 104.09861 39.058366 6762.5042 1.0090657e+08 0.033969600 0.077237459 104.18939 38.862851 6765.1734 95894152. 0.035455358 0.079562844 104.28015 38.673534 6767.8425 92375068. 0.031649897 0.081032365 104.37092 38.481873 6770.5117 90212651. 0.024133834 0.088120687 104.46156 38.286488 6773.1808 89019959. 0.017397276 0.094594518 104.54536 38.097953 6775.8499 85846706. 0.010565812 0.10106835 104.64389 37.882383 6778.5191 83652851. 0.0038071436 0.10754218 104.74294 37.665877 6781.1882 79538652. -0.0032060502 0.11401601 104.82674 37.477343 6783.8573 76715994. -0.010144382 0.12048984 104.91722 37.282133 6786.5265 76662621. -0.016693893 0.12696367 105.00430 37.090324 6789.1956 75841732. -0.023704427 0.13343750 105.08971 36.897338 6791.8647 73062589. -0.032228590 0.13991133 105.19026 36.662710 6794.5339 71607957. -0.044000030 0.14638516 105.27568 36.469714 6797.2030 67634812. -0.093645715 0.15285899 105.35948 36.277891 6799.8722 59703132. -0.063936751 0.15933282 105.44360 36.081179 6802.5413 49087321. 0.033148392 0.16580665 105.53575 35.854983