# # 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 = 43.702255 km # Date (UTC) = 2012-12-29T08:48:24.030 # Date (julian) = 2456290.86694479 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.4708 7.2335355e+10 0.047375706 0.032425190 -15.041148 46.696143 6502.9228 6.5549505e+10 0.056140604 0.033164585 -15.139501 46.589238 6505.3748 5.9979267e+10 0.065220583 0.033903981 -15.237853 46.482333 6507.8269 5.5307337e+10 0.074754457 0.034643376 -15.336218 46.371232 6510.2789 5.0715885e+10 0.084698069 0.035382772 -15.434583 46.260037 6512.7309 4.6299069e+10 0.095097004 0.036122167 -15.540809 46.143035 6515.1829 4.1927945e+10 0.10590714 0.036861562 -15.651457 46.022766 6517.6349 3.8057617e+10 0.11730208 0.037600958 -15.755203 45.909998 6520.0869 3.4887099e+10 0.12949259 0.038340353 -15.853556 45.803093 6522.5389 3.2235969e+10 0.14101084 0.039058363 -15.950956 45.696188 6524.9909 2.9959259e+10 0.14863283 0.039778976 -16.045031 45.589284 6527.4429 2.7619289e+10 0.15409252 0.041038013 -16.139107 45.482379 6529.8949 2.5198701e+10 0.15944647 0.043661269 -16.247836 45.363657 6532.3469 2.2896409e+10 0.16382019 0.046973987 -16.358485 45.243387 6534.7989 2.0863587e+10 0.16698176 0.048168041 -16.455793 45.133872 6537.2509 1.9215838e+10 0.16924111 0.048803517 -16.549882 45.026953 6539.7029 1.7729089e+10 0.17131008 0.050494482 -16.647213 44.911546 6542.1549 1.6220453e+10 0.17118636 0.051061052 -16.748240 44.786465 6544.6069 1.4799027e+10 0.17049957 0.052136692 -16.846565 44.668448 6547.0589 1.3562491e+10 0.16897529 0.053309772 -16.940641 44.561543 6549.5109 1.2560771e+10 0.16673703 0.054486955 -17.034503 44.454639 6551.9629 1.1737080e+10 0.16491532 0.055573755 -17.124303 44.347734 6554.4149 1.0957253e+10 0.16235609 0.054841088 -17.214102 44.240829 6556.8669 1.0146983e+10 0.16010485 0.053885669 -17.311891 44.124414 6559.3189 9.3037633e+09 0.15728032 0.052351182 -17.412918 44.004145 6561.7709 8.4725394e+09 0.15458965 0.050992774 -17.504140 43.892325 6564.2230 7.7427128e+09 0.15167972 0.048670555 -17.589674 43.785406 6566.6750 7.1294593e+09 0.14961331 0.046801063 -17.676466 43.677231 6569.1270 6.6247018e+09 0.14746383 0.044860688 -17.766266 43.566051 6571.5790 6.1639659e+09 0.14579914 0.044345148 -17.856067 43.454871 6574.0310 5.6987231e+09 0.14317627 0.042840131 -17.952001 43.335000 6576.4830 5.2403121e+09 0.14076099 0.040815480 -18.048216 43.214730 6578.9350 4.8140091e+09 0.13751642 0.037173174 -18.135050 43.106189 6581.3870 4.4730768e+09 0.13457117 0.035479425 -18.220573 42.999284 6583.8390 4.1753591e+09 0.13154339 0.034597008 -18.311860 42.885176 6586.2910 3.8854919e+09 0.12845188 0.033167535 -18.408075 42.764906 6588.7430 3.6033436e+09 0.12551299 0.033131805 -18.497406 42.650782 6591.1950 3.3498998e+09 0.12160468 0.028981875 -18.578664 42.543863 6593.6470 3.1374780e+09 0.11770219 0.026500703 -18.660443 42.436424 6596.0990 2.9483188e+09 0.11295714 0.025726824 -18.745967 42.325242 6598.5510 2.7692102e+09 0.10930721 0.025144092 -18.831491 42.214061 6601.0030 2.5859879e+09 0.10793437 0.027047111 -18.921624 42.095758 6603.4550 2.4016691e+09 0.10629393 0.026393902 -19.013029 41.975488 6605.9070 2.2282515e+09 0.10581025 0.027425966 -19.097273 41.864639 6608.3590 2.0794180e+09 0.10339291 0.023722879 -19.178520 41.757735 6610.8110 1.9533142e+09 0.10008810 0.024777904 -19.263489 41.645934 6613.2630 1.8213022e+09 0.098952218 0.023670100 -19.354894 41.525664 6615.7150 1.6912113e+09 0.097540374 0.023273532 -19.442150 41.408005 6618.1670 1.5755310e+09 0.096839361 0.023896937 -19.519131 41.296810 6620.6191 1.4756611e+09 0.096009342 0.024966687 -19.596113 41.185615 6623.0711 1.3859737e+09 0.094398147 0.024518151 -19.686790 41.065804 6625.5231 1.2896118e+09 0.092866168 0.026021773 -19.778195 40.945534 6627.9751 1.2047871e+09 0.090910981 0.025693463 -19.857030 40.836903 6630.4271 1.1310656e+09 0.089109399 0.025929354 -19.934001 40.729999 6632.8791 1.0635831e+09 0.087258208 0.026137753 -20.016094 40.615980 6635.3311 9.9438300e+08 0.085392561 0.026449438 -20.102688 40.495710 6637.7831 9.2448399e+08 0.083808682 0.025777882 -20.184917 40.381503 6640.2351 8.6787436e+08 0.083354779 0.025241889 -20.261889 40.274598 6642.6871 8.1563004e+08 0.082869929 0.025179813 -20.339415 40.165601 6645.1391 7.6611124e+08 0.081404487 0.025516845 -20.421198 40.040520 6647.5911 7.1410102e+08 0.079804005 0.026748997 -20.502806 39.916100 6650.0431 6.7011707e+08 0.078513133 0.026265105 -20.579788 39.809182 6652.4951 6.3231019e+08 0.077560156 0.027386745 -20.656770 39.702263 6654.9471 5.9796173e+08 0.076236606 0.027632747 -20.737104 39.586022 6657.3991 5.6459419e+08 0.074252245 0.029364074 -20.818887 39.465753 6659.8511 5.2851371e+08 0.072977169 0.031657054 -20.895040 39.353763 6662.3031 4.9674748e+08 0.071672409 0.032874200 -20.967736 39.246858 6664.7551 4.6771216e+08 0.070981079 0.029443099 -21.042985 39.136197 6667.2071 4.4164840e+08 0.070798897 0.027179542 -21.124768 39.015928 6669.6591 4.1945015e+08 0.070000046 0.027678721 -21.206552 38.895658 6672.1111 3.9502803e+08 0.069969853 0.026944020 -21.288335 38.775388 6674.5631 3.7194621e+08 0.068881596 0.029429843 -21.368995 38.656771 6677.0152 3.5168407e+08 0.066490954 0.032336678 -21.441700 38.549852 6679.4672 3.3273495e+08 0.066228209 0.029881735 -21.514405 38.442933 6681.9192 3.1911372e+08 0.067169291 0.030362524 -21.590462 38.321749 6684.3712 3.0192997e+08 0.067318062 0.032672927 -21.667434 38.196670 6686.8232 2.8513982e+08 0.065822536 0.034240017 -21.747808 38.074990 6689.2752 2.6864733e+08 0.062765438 0.033768324 -21.829591 37.954719 6691.7272 2.5218181e+08 0.061568651 0.032829697 -21.902980 37.842845 6694.1792 2.3865452e+08 0.060379641 0.031009894 -21.971398 37.735941 6696.6312 2.2570565e+08 0.059900693 0.029938031 -22.042295 37.625165 6699.0832 2.1457138e+08 0.058298369 0.031513671 -22.119267 37.504896 6701.5352 2.0451780e+08 0.056103030 0.032194729 -22.196240 37.384626 6703.9872 1.9256582e+08 0.055924004 0.036145522 -22.273212 37.264356 6706.4392 1.8022327e+08 0.055612566 0.039210804 -22.349548 37.144087 6708.8912 1.6520549e+08 0.054797282 0.041014072 -22.421710 37.023817 6711.3432 1.5545870e+08 0.052703275 0.041082714 -22.493672 36.904263 6713.7952 1.4902810e+08 0.050265416 0.046562751 -22.562099 36.797344 6716.2472 1.4287927e+08 0.048247540 0.048765493 -22.630527 36.690425 6718.6992 1.3821314e+08 0.045704256 0.050901404 -22.705068 36.573955 6721.1512 1.2989456e+08 0.045781414 0.050349465 -22.782041 36.453685 6723.6032 1.2494009e+08 0.044227956 0.049705378 -22.855950 36.333416 6726.0552 1.1657311e+08 0.039974952 0.040951866 -22.928111 36.213146 6728.5072 1.0960432e+08 0.039250899 0.040347028 -23.000273 36.092877 6730.9592 1.0346094e+08 0.037500896 0.041694147 -23.072436 35.972607 6733.4113 97494264. 0.036187863 0.046157109 -23.144598 35.852337 6735.8633 91701640. 0.037412025 0.050209842 -23.216760 35.732067 6738.3153 87093601. 0.038909830 0.059056740 -23.288922 35.611797 6740.7673 83001510. 0.038269567 0.065361101 -23.361083 35.491527 6743.2193 78042663. 0.034309901 0.072526618 -23.433245 35.371258 6745.6713 74172664. 0.031626643 0.078849084 -23.505407 35.250988 6748.1233 67370539. 0.027285360 0.067665464 -23.576397 35.130719 6750.5753 63983554. 0.024439220 0.072986447 -23.643749 35.010449 6753.0273 63730573. 0.021622758 0.073065591 -23.711893 34.890180 6755.4793 63554633. 0.019128845 0.074395207 -23.784055 34.769909 6757.9313 62944987. 0.017156373 0.073913827 -23.855803 34.649637 6760.3833 59190121. 0.016008424 0.076792204 -23.923164 34.529350 6762.8353 52981217. 0.015950863 0.076703434 -23.990562 34.409062 6765.2873 49360963. -0.0089314337 0.079583642 -24.062724 34.288793 6767.7393 48859315. 0.011767149 0.081147929 -24.134885 34.168523 6770.1913 50306259. 0.054559605 0.087343725 -24.211519 34.032287