# # 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 = 52.475001 km # Date (UTC) = 2012-01-20T10:29:03.642 # Date (julian) = 2455946.93684771 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.0175 1.6721727e+11 0.035078094 0.031383851 90.846225 49.310354 6499.1704 1.3956946e+11 0.042859862 0.032033044 90.957257 49.184843 6501.3233 1.1744331e+11 0.050699253 0.032682236 91.071337 49.054957 6503.4761 9.9649473e+10 0.058683065 0.033331429 91.200873 48.902890 6505.6290 8.4450746e+10 0.066810116 0.033980621 91.323209 48.759277 6507.7819 7.2344854e+10 0.075250907 0.034629814 91.434241 48.628937 6509.9347 6.3570588e+10 0.084343119 0.035279006 91.545272 48.498596 6512.0876 5.6919670e+10 0.094223232 0.035928199 91.656300 48.368256 6514.2405 5.1209380e+10 0.10477083 0.036577391 91.770499 48.232567 6516.3934 4.5914640e+10 0.11586499 0.037226584 91.894407 48.080499 6518.5462 4.1101797e+10 0.12753862 0.037875776 92.009983 47.938657 6520.6991 3.6986921e+10 0.13989429 0.038524969 92.116186 47.808317 6522.8520 3.3535102e+10 0.15057051 0.039140350 92.229456 47.669304 6525.0048 3.0452298e+10 0.15872533 0.039781662 92.353363 47.517236 6527.1577 2.7579543e+10 0.16494018 0.040830972 92.466231 47.378718 6529.3106 2.5083701e+10 0.17013451 0.042730519 92.572435 47.248377 6531.4635 2.3160335e+10 0.17508732 0.045903244 92.675973 47.118037 6533.6163 2.1472126e+10 0.17866255 0.047781507 92.777348 46.987697 6535.7692 1.9805616e+10 0.17907283 0.047890622 92.886844 46.846915 6537.9221 1.8125363e+10 0.17970107 0.049119939 93.005119 46.694850 6540.0749 1.6525610e+10 0.17895073 0.050889505 93.111478 46.558102 6542.2278 1.5160533e+10 0.17606913 0.051088727 93.212853 46.427761 6544.3807 1.4077573e+10 0.17378493 0.051953163 93.311169 46.297421 6546.5336 1.3174768e+10 0.17157356 0.052903553 93.407716 46.167081 6548.6864 1.2430006e+10 0.16947326 0.053872635 93.504265 46.036741 6550.8393 1.1750837e+10 0.16756665 0.055195511 93.600815 45.906401 6552.9922 1.0995317e+10 0.16607109 0.055337040 93.705248 45.762654 6555.1450 1.0188807e+10 0.16410190 0.054731501 93.817867 45.604986 6557.2979 9.3856303e+09 0.16188772 0.053679379 93.919002 45.466849 6559.4508 8.7068432e+09 0.15925508 0.052336301 94.015552 45.336509 6561.6036 8.1894538e+09 0.15641067 0.051075217 94.112100 45.206168 6563.7565 7.7491251e+09 0.15340438 0.049053250 94.208647 45.075828 6565.9094 7.3509659e+09 0.15077479 0.047285774 94.302436 44.945488 6568.0623 6.9551719e+09 0.14886383 0.045714431 94.394157 44.815147 6570.2151 6.5672754e+09 0.14689561 0.044828395 94.485877 44.684807 6572.3680 6.2117604e+09 0.14455873 0.044019411 94.577596 44.554467 6574.5209 5.8830001e+09 0.14166045 0.042604832 94.669316 44.424127 6576.6737 5.6064036e+09 0.13856411 0.040595901 94.761038 44.293786 6578.8266 5.3065107e+09 0.13490586 0.037344295 94.856209 44.155685 6580.9795 4.9855746e+09 0.13158232 0.035615568 94.957587 44.003618 6583.1324 4.6630970e+09 0.12896601 0.034954674 95.053349 43.864187 6585.2852 4.3678331e+09 0.12638117 0.033742742 95.145071 43.733847 6587.4381 4.1325385e+09 0.12428541 0.033255435 95.234330 43.603508 6589.5910 3.9192017e+09 0.12236656 0.031873551 95.321224 43.473169 6591.7438 3.7235275e+09 0.12007033 0.028362575 95.408117 43.340712 6593.8967 3.5375598e+09 0.11789252 0.026268553 95.495011 43.205543 6596.0496 3.3654387e+09 0.11527911 0.025727048 95.581904 43.072147 6598.2025 3.1996730e+09 0.11354942 0.025310508 95.668798 42.941807 6600.3553 3.0435876e+09 0.11305534 0.025720351 95.754264 42.811467 6602.5082 2.8999817e+09 0.11232870 0.027082962 95.836329 42.681128 6604.6611 2.7657690e+09 0.11125459 0.026463794 95.919476 42.550790 6606.8139 2.6368805e+09 0.11026528 0.026041350 96.006370 42.420450 6608.9668 2.5079726e+09 0.10724830 0.023706809 96.092526 42.290109 6611.1197 2.3833893e+09 0.10434594 0.024882138 96.174591 42.159769 6613.2725 2.2642815e+09 0.10331138 0.023673588 96.256657 42.029428 6615.4254 2.1527182e+09 0.10186273 0.023264621 96.338722 41.899088 6617.5783 2.0487139e+09 0.10074255 0.023630979 96.420787 41.768748 6619.7312 1.9514467e+09 0.099917134 0.024702331 96.502852 41.638408 6621.8840 1.8621009e+09 0.098577097 0.024796431 96.584917 41.508068 6624.0369 1.7704117e+09 0.096493874 0.024882063 96.662456 41.377727 6626.1898 1.6844743e+09 0.095079231 0.026349118 96.739696 41.247387 6628.3426 1.6042715e+09 0.093217958 0.025842211 96.821118 41.117046 6630.4955 1.5277710e+09 0.091443365 0.025929523 96.903183 40.986706 6632.6484 1.4596032e+09 0.089801014 0.026110092 96.981412 40.852529 6634.8013 1.3910028e+09 0.088441294 0.026385290 97.058652 40.717362 6636.9541 1.3270753e+09 0.087167147 0.026179227 97.135889 40.585688 6639.1070 1.2663106e+09 0.086471928 0.025589832 97.213126 40.455347 6641.2599 1.2063605e+09 0.087369480 0.025149183 97.290365 40.325007 6643.4127 1.1535109e+09 0.086950705 0.025254937 97.367606 40.194666 6645.5656 1.1005637e+09 0.086143604 0.025716651 97.444844 40.064325 6647.7185 1.0493303e+09 0.085283735 0.026816063 97.522081 39.933985 6649.8714 1.0007837e+09 0.084621731 0.026432574 97.596861 39.803645 6652.0242 9.5052602e+08 0.084237641 0.027257185 97.669273 39.673305 6654.1771 9.0425633e+08 0.083634499 0.027960783 97.743798 39.542966 6656.3300 8.6643996e+08 0.081886283 0.028313024 97.821038 39.412627 6658.4828 8.2933555e+08 0.080444932 0.030917394 97.896509 39.282288 6660.6357 7.9431149e+08 0.079089364 0.032203822 97.968917 39.151948 6662.7886 7.5880764e+08 0.077855750 0.032601834 98.041327 39.021608 6664.9414 7.2010973e+08 0.077205573 0.028761377 98.113739 38.891267 6667.0943 6.8738732e+08 0.076788657 0.027138102 98.186151 38.760926 6669.2472 6.5954850e+08 0.075617569 0.028101824 98.258563 38.630586 6671.4001 6.3500839e+08 0.075550317 0.026871049 98.330975 38.500246 6673.5529 6.0701428e+08 0.074892086 0.028286163 98.403387 38.369905 6675.7058 5.7993260e+08 0.072778216 0.031150223 98.475798 38.239565 6677.8587 5.5103570e+08 0.071456073 0.031137528 98.548210 38.109225 6680.0115 5.2863150e+08 0.071563292 0.029443909 98.620572 37.978885 6682.1644 5.0891920e+08 0.072297776 0.030550160 98.688152 37.848567 6684.3173 4.8620574e+08 0.072553191 0.032670193 98.755724 37.718250 6686.4702 4.6355164e+08 0.071689229 0.034034627 98.827830 37.587910 6688.6230 4.4129623e+08 0.069122958 0.033929006 98.900242 37.457569 6690.7759 4.2551592e+08 0.067910134 0.033026945 98.968477 37.327229 6692.9288 4.1207230e+08 0.067086562 0.031686808 99.036060 37.196889 6695.0816 3.9769423e+08 0.066507074 0.029844478 99.103643 37.066550 6697.2345 3.7789450e+08 0.065965356 0.030120943 99.171227 36.936212 6699.3874 3.6053978e+08 0.064598248 0.031232992 99.238810 36.805872 6701.5402 3.4487851e+08 0.062801521 0.032202146 99.306393 36.675532 6703.6931 3.3432483e+08 0.062774980 0.035409643 99.373977 36.545192 6705.8460 3.2254251e+08 0.062707442 0.038172608 99.441560 36.414852 6707.9989 3.0810012e+08 0.062288356 0.040043741 99.509144 36.284511 6710.1517 2.9412006e+08 0.060943596 0.040526194 99.576728 36.154170 6712.3046 2.8115981e+08 0.058691337 0.042395506 99.641860 36.026281 6714.4575 2.7071118e+08 0.056452662 0.047337801 99.704615 35.900769 6716.6103 2.6294837e+08 0.054369065 0.049300342 99.769476 35.773151 6718.7632 2.5518582e+08 0.051835156 0.051001065 99.837059 35.642811 6720.9161 2.4727952e+08 0.051774360 0.050313622 99.902883 35.512471 6723.0690 2.3885093e+08 0.050531884 0.049407403 99.965642 35.382131 6725.2218 2.2948007e+08 0.046084360 0.041437455 100.03147 35.245421 6727.3747 2.1798965e+08 0.044505289 0.040461179 100.10468 35.093353 6729.5276 2.0593519e+08 0.043550362 0.040693789 100.17248 34.952532 6731.6804 1.9900449e+08 0.041632565 0.043104228 100.23524 34.822192 6733.8333 1.9123059e+08 0.040388090 0.048448600 100.29799 34.691852 6735.9862 1.8710684e+08 0.041802538 0.050340338 100.36075 34.561511 6738.1391 1.8004409e+08 0.042884126 0.058086643 100.42351 34.431170 6740.2919 1.7226805e+08 0.042322361 0.064549064 100.48627 34.300830 6742.4448 1.6874404e+08 0.039512358 0.069694578 100.54902 34.171953 6744.5977 1.6327658e+08 0.035375478 0.078255691 100.61178 34.046442 6746.7505 1.6019595e+08 0.031526963 0.070261452 100.67454 33.919812 6748.9034 1.5603822e+08 0.030597116 0.071769756 100.73729 33.789471 6751.0563 1.5002178e+08 0.027536557 0.073735466 100.79928 33.659131 6753.2091 1.4475085e+08 0.024769654 0.073654134 100.85721 33.528791 6755.3620 1.4100470e+08 0.022763846 0.074446623 100.91599 33.396526 6757.5149 1.3235363e+08 0.020866091 0.075177501 100.98358 33.244457 6759.6678 1.2583315e+08 0.021659026 0.075981096 101.04965 33.100703 6761.8206 1.1766853e+08 0.024583375 0.078036025 101.11241 32.975191 6763.9735 1.1084586e+08 0.028010399 0.079402588 101.17400 32.848513 6766.1264 1.0583845e+08 0.029597011 0.079999607 101.23192 32.718173 6768.2792 99398863. 0.026128881 0.081860813 101.28985 32.587832 6770.4321 96200908. 0.021807875 0.087927770 101.34778 32.457492 6772.5850 92742817. 0.017974801 0.093149429 101.40571 32.327628 6774.7379 93703586. 0.014388255 0.098371087 101.46364 32.202116 6776.8907 91711000. 0.010621928 0.10359274 101.52183 32.075886 6779.0436 89509006. 0.0068121067 0.10881440 101.58941 31.923817 6781.1965 84526669. 0.0027615419 0.11403606 101.65457 31.777219 6783.3493 80952130. -0.0013324306 0.11925772 101.71249 31.646902 6785.5022 79580485. -0.0054326848 0.12447938 101.77041 31.517447 6787.6551 76883223. -0.0098817342 0.12970104 101.82834 31.391935 6789.8080 76225948. -0.014526299 0.13492269 101.88670 31.263549 6791.9608 70791039. -0.020398478 0.14014435 101.94865 31.111481 6794.1137 66062526. -0.027735880 0.14536601 102.00927 30.966641 6796.2666 60038217. -0.039910029 0.15058767 102.06720 30.836301 6798.4194 55456012. -0.089814349 0.15580933 102.12387 30.707222 6800.5723 53435787. -0.058278260 0.16103099 102.17697 30.581709 6802.7252 53849727. 0.019579467 0.16625264 102.23282 30.451160