# # 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 = 46.945257 km # Date (UTC) = 2014-01-23T08:49:47.560 # Date (julian) = 2456680.86791158 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.7253 8.2079224e+10 0.044149168 0.032200364 -8.3892487 56.231234 6501.9841 7.2984114e+10 0.052368324 0.032881510 -8.5783483 56.081914 6504.2429 6.5773326e+10 0.060810487 0.033562657 -8.7672152 55.933947 6506.5018 5.9869093e+10 0.069582172 0.034243804 -8.9504056 55.780305 6508.7606 5.4994919e+10 0.078798272 0.034924950 -9.1335959 55.628713 6511.0195 5.0628628e+10 0.088461475 0.035606097 -9.3167861 55.480979 6513.2783 4.6882630e+10 0.098696175 0.036287244 -9.4999760 55.329374 6515.5371 4.3253261e+10 0.10938582 0.036968390 -9.6831656 55.175730 6517.7960 3.9797277e+10 0.12053400 0.037649537 -9.8606334 55.022117 6520.0548 3.6743837e+10 0.13227658 0.038330683 -10.029678 54.874426 6522.3136 3.4097568e+10 0.14381257 0.038999383 -10.176564 54.742737 6524.5725 3.1820392e+10 0.15080974 0.039630338 -10.330692 54.604553 6526.8313 2.9511981e+10 0.15677680 0.040539631 -10.502063 54.450909 6529.0902 2.6934055e+10 0.16112262 0.042379402 -10.673435 54.297265 6531.3490 2.4243101e+10 0.16538499 0.045736650 -10.844807 54.143622 6533.6078 2.1815040e+10 0.16898851 0.047777899 -11.010793 53.989978 6535.8667 1.9843249e+10 0.17008632 0.047848337 -11.171075 53.841144 6538.1255 1.8279514e+10 0.17251987 0.049217799 -11.312895 53.709455 6540.3844 1.6923812e+10 0.17312406 0.051035679 -11.460503 53.572391 6542.6432 1.5673789e+10 0.17163877 0.051246428 -11.625965 53.418746 6544.9020 1.4429425e+10 0.17021677 0.052376090 -11.788162 53.265102 6547.1609 1.3339481e+10 0.16803030 0.053348539 -11.947715 53.111460 6549.4197 1.2450181e+10 0.16592579 0.054393991 -12.083297 52.976704 6551.6785 1.1612900e+10 0.16438968 0.055473930 -12.214987 52.845015 6553.9374 1.0782993e+10 0.16224059 0.054863859 -12.371336 52.693900 6556.1962 9.9815684e+09 0.16030877 0.053984278 -12.525474 52.543546 6558.4551 9.2794846e+09 0.15846934 0.052851541 -12.657164 52.406791 6560.7139 8.6794697e+09 0.15593858 0.051630642 -12.792370 52.266335 6562.9727 8.1186940e+09 0.15375172 0.049954313 -12.940105 52.112692 6565.2316 7.5815094e+09 0.15163001 0.048055446 -13.076717 51.970615 6567.4904 7.1000146e+09 0.14981428 0.046202535 -13.203342 51.838923 6569.7492 6.6652063e+09 0.14830427 0.044901189 -13.341631 51.695103 6572.0081 6.2399965e+09 0.14676317 0.044225526 -13.489365 51.541461 6574.2669 5.8385695e+09 0.14441054 0.042726803 -13.618939 51.402346 6576.5258 5.4644901e+09 0.14215549 0.040766232 -13.745565 51.265590 6578.7846 5.1055260e+09 0.13926349 0.037410641 -13.885657 51.113873 6581.0434 4.7607409e+09 0.13659999 0.035583456 -14.023555 50.963503 6583.3023 4.4566058e+09 0.13433684 0.034868668 -14.145115 50.826747 6585.5611 4.1925736e+09 0.13159209 0.033522176 -14.269825 50.686285 6587.8200 3.9522150e+09 0.12903048 0.033340039 -14.405741 50.532640 6590.0788 3.7244580e+09 0.12607369 0.030915507 -14.531418 50.387899 6592.3376 3.5148081e+09 0.12296177 0.027745587 -14.647914 50.251144 6594.5965 3.3243742e+09 0.12034912 0.025845093 -14.775131 50.105069 6596.8553 3.1257710e+09 0.11791647 0.025723385 -14.911019 49.951457 6599.1141 2.9219073e+09 0.11638979 0.024936595 -15.030224 49.812347 6601.3730 2.7454186e+09 0.11661619 0.027221342 -15.146719 49.675590 6603.6318 2.6118900e+09 0.11539660 0.026289239 -15.258727 49.543323 6605.8907 2.4931396e+09 0.11490899 0.027412233 -15.370157 49.411634 6608.1495 2.3604447e+09 0.11267718 0.023728419 -15.498523 49.254542 6610.4083 2.2244612e+09 0.10962296 0.024393131 -15.624452 49.101103 6612.6672 2.0892646e+09 0.10795822 0.023822268 -15.735883 48.969411 6614.9260 1.9777858e+09 0.10675564 0.023302509 -15.846072 48.836478 6617.1848 1.8876404e+09 0.10518054 0.023500534 -15.952438 48.699722 6619.4437 1.7899026e+09 0.10432770 0.024632968 -16.065205 48.558394 6621.7025 1.6910663e+09 0.10309270 0.024856592 -16.195210 48.404752 6623.9614 1.5944955e+09 0.10094417 0.024847995 -16.308608 48.260879 6626.2202 1.5023424e+09 0.099435905 0.026310350 -16.409909 48.124123 6628.4790 1.4277555e+09 0.097428994 0.025897589 -16.514270 47.990428 6630.7379 1.3596826e+09 0.095323606 0.025930120 -16.620635 47.858739 6632.9967 1.2859930e+09 0.093504932 0.026151859 -16.734447 47.709498 6635.2556 1.2158453e+09 0.091506973 0.026438111 -16.852635 47.549945 6637.5144 1.1448190e+09 0.089676077 0.025909479 -16.959736 47.411768 6639.7732 1.0797364e+09 0.088861652 0.025351706 -17.066101 47.275013 6642.0321 1.0294862e+09 0.088778671 0.025153008 -17.162709 47.143135 6644.2909 9.8516693e+08 0.087642624 0.025375047 -17.258947 47.011441 6646.5497 9.5167958e+08 0.086617521 0.026204712 -17.360189 46.874744 6648.8086 9.1732595e+08 0.085505750 0.027505551 -17.461650 46.737655 6651.0674 8.7676339e+08 0.085206363 0.026535832 -17.573928 46.578102 6653.3263 8.2998223e+08 0.084935121 0.027692236 -17.682666 46.427534 6655.5851 7.8252798e+08 0.083564068 0.027851978 -17.783967 46.295843 6657.8439 7.4326147e+08 0.082055382 0.029880046 -17.883499 46.162396 6660.1028 7.0938346e+08 0.080646144 0.031719411 -17.979718 46.025664 6662.3616 6.8285490e+08 0.079136999 0.032841387 -18.074051 45.888923 6664.6204 6.6008113e+08 0.078097013 0.029935898 -18.165221 45.752166 6666.8793 6.3024555e+08 0.077838903 0.027079935 -18.264817 45.608669 6669.1381 5.9716790e+08 0.076654537 0.028213840 -18.377095 45.455027 6671.3970 5.6284387e+08 0.076755632 0.026871005 -18.474451 45.313322 6673.6558 5.2945608e+08 0.076144271 0.028440014 -18.565622 45.176567 6675.9146 5.0573798e+08 0.073833171 0.031550224 -18.656792 45.039811 6678.1735 4.8253956e+08 0.072634907 0.030820586 -18.747963 44.903056 6680.4323 4.6240309e+08 0.072891115 0.029534771 -18.839133 44.770141 6682.6912 4.4484565e+08 0.073399036 0.030952609 -18.930304 44.638452 6684.9500 4.2147825e+08 0.073209395 0.032702300 -19.028756 44.484919 6687.2088 3.9878064e+08 0.071232744 0.034226434 -19.128363 44.327457 6689.4677 3.7591408e+08 0.068534094 0.033595050 -19.219533 44.190700 6691.7265 3.5641600e+08 0.067416281 0.032829856 -19.310109 44.054539 6693.9853 3.4002287e+08 0.066337233 0.031266055 -19.396214 43.922849 6696.2442 3.2390980e+08 0.066214011 0.029777238 -19.482319 43.790435 6698.5030 3.1100005e+08 0.065135001 0.030908268 -19.568424 43.653679 6700.7619 2.9761895e+08 0.063239689 0.031232809 -19.656952 43.513076 6703.0207 2.8695700e+08 0.062624509 0.033727020 -19.757411 43.353523 6705.2795 2.7214473e+08 0.062618926 0.037165559 -19.848617 43.207247 6707.5384 2.5917999e+08 0.062066267 0.040109705 -19.929657 43.075556 6709.7972 2.4881320e+08 0.060823187 0.040625479 -20.013241 42.941321 6712.0560 2.3844710e+08 0.058340580 0.041934020 -20.099347 42.804567 6714.3149 2.2994804e+08 0.055822828 0.047327082 -20.189910 42.655777 6716.5737 2.1836108e+08 0.053524673 0.049246402 -20.284459 42.496225 6718.8326 2.0518288e+08 0.050672906 0.051109066 -20.367720 42.359954 6721.0914 1.9259083e+08 0.050479551 0.050331438 -20.448760 42.228262 6723.3502 1.8388331e+08 0.048633086 0.049564278 -20.529801 42.092209 6725.6091 1.7905278e+08 0.043929520 0.041195559 -20.610842 41.955454 6727.8679 1.7703790e+08 0.042459372 0.039804076 -20.691883 41.818698 6730.1268 1.6801898e+08 0.040579827 0.040552695 -20.772923 41.681942 6732.3856 1.5819570e+08 0.038400677 0.043811195 -20.866276 41.529802 6734.6444 1.4718939e+08 0.037370751 0.049314826 -20.956723 41.379899 6736.9033 1.3797219e+08 0.038495839 0.053769859 -21.032698 41.243144 6739.1621 1.3445267e+08 0.038751615 0.063024937 -21.108673 41.106388 6741.4209 1.2933930e+08 0.036746004 0.066959245 -21.184648 40.969632 6743.6798 1.2470829e+08 0.031903257 0.075633223 -21.264061 40.828293 6745.9386 1.1504644e+08 0.029601087 0.078961474 -21.352701 40.674651 6748.1975 1.0624679e+08 0.024893934 0.068055729 -21.434006 40.530789 6750.4563 1.0066254e+08 0.021756715 0.072783274 -21.509982 40.394034 6752.7151 97974914. 0.018846689 0.073306933 -21.585957 40.257278 6754.9740 99748955. 0.017417303 0.074647203 -21.661932 40.120522 6757.2328 95047132. 0.014619616 0.076033541 -21.745894 39.973118 6759.4916 88057989. 0.014959209 0.075938597 -21.834535 39.819475 6761.7505 82838800. 0.017169579 0.078030230 -21.906538 39.681678 6764.0093 78623444. 0.020245687 0.079483732 -21.977448 39.544922 6766.2682 74881477. 0.020699310 0.080320335 -22.059754 39.391885 6768.5270 69842574. 0.014983553 0.082752296 -22.140650 39.242831 6770.7858 64720450. 0.0075691246 0.088785704 -22.216625 39.106075 6773.0447 60497756. -0.0015254576 0.094264379 -22.291093 38.969320 6775.3035 59377919. -0.015120268 0.099743055 -22.362003 38.832566 6777.5624 59537344. -0.075460279 0.10522173 -22.436732 38.690355 6779.8212 57154109. -0.031980504 0.11070041 -22.519463 38.536710 6782.0800 54717591. 0.072771596 0.11617908 -22.591534 38.393735