# # 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 = 36.891785 km # Date (UTC) = 2010-12-24T09:38:59.532 # Date (julian) = 2455554.90207792 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.4890 2.4072347e+11 0.031743723 0.030621381 -31.290669 43.257131 6496.8293 2.0519166e+11 0.039948867 0.031327083 -31.372296 43.151016 6499.1695 1.6494611e+11 0.048042101 0.032032785 -31.454634 43.044263 6501.5098 1.3383898e+11 0.055882274 0.032738487 -31.551056 42.924883 6503.8501 1.0916661e+11 0.063525883 0.033444189 -31.647479 42.805503 6506.1903 9.0661202e+10 0.071109145 0.034149891 -31.731027 42.697665 6508.5306 7.7536131e+10 0.078992870 0.034855593 -31.812654 42.591550 6510.8709 6.7497211e+10 0.087435789 0.035561295 -31.895999 42.487143 6513.2111 5.9283601e+10 0.096616148 0.036266996 -31.981718 42.385097 6515.5514 5.2571476e+10 0.10676775 0.036972698 -32.067436 42.283050 6517.8917 4.7021882e+10 0.11801383 0.037678400 -32.149186 42.177058 6520.2320 4.2226541e+10 0.13040430 0.038384102 -32.230813 42.070944 6522.5722 3.7911760e+10 0.14228695 0.039067095 -32.315357 41.957932 6524.9125 3.3868536e+10 0.15070141 0.039751128 -32.402596 41.838551 6527.2528 3.0203934e+10 0.15771334 0.040899980 -32.487916 41.723707 6529.5930 2.6965645e+10 0.16434334 0.043180434 -32.569543 41.617593 6531.9333 2.4304606e+10 0.17095853 0.046587112 -32.651170 41.511479 6534.2736 2.2086693e+10 0.17501350 0.048021086 -32.729156 41.409005 6536.6138 2.0142299e+10 0.17688306 0.048339720 -32.806700 41.306972 6538.9541 1.8415058e+10 0.17726927 0.049621282 -32.884250 41.203130 6541.2944 1.6900920e+10 0.17584509 0.051231064 -32.961807 41.097002 6543.6346 1.5493177e+10 0.17334253 0.051548459 -33.039363 40.990874 6545.9749 1.4074398e+10 0.17057376 0.052464301 -33.126523 40.871601 6548.3152 1.2712159e+10 0.16894355 0.053761771 -33.213762 40.752220 6550.6555 1.1470874e+10 0.16697112 0.055149480 -33.293111 40.643637 6552.9957 1.0445821e+10 0.16525897 0.055336143 -33.370656 40.537523 6555.3360 9.6031238e+09 0.16295103 0.054571050 -33.448201 40.432893 6557.6763 8.8515403e+09 0.16049731 0.053442224 -33.525747 40.330860 6560.0165 8.1636881e+09 0.15772234 0.052259404 -33.603293 40.228827 6562.3568 7.5495672e+09 0.15433131 0.050540395 -33.677119 40.123052 6564.6971 6.9979880e+09 0.15110768 0.048455685 -33.750593 40.016922 6567.0373 6.4532332e+09 0.14832230 0.046585617 -33.828320 39.904649 6569.3776 5.9040092e+09 0.14562175 0.044877001 -33.910969 39.785270 6571.7179 5.3730080e+09 0.14325671 0.044307209 -33.990992 39.670846 6574.0581 4.8996048e+09 0.13984828 0.042827078 -34.064457 39.568813 6576.3984 4.5137870e+09 0.13637939 0.040912810 -34.137921 39.466780 6578.7387 4.1963077e+09 0.13199958 0.037483147 -34.211385 39.361336 6581.0790 3.9133773e+09 0.12761619 0.035572701 -34.284848 39.255221 6583.4192 3.6412356e+09 0.12362013 0.034809475 -34.360082 39.143994 6585.7595 3.3529455e+09 0.11924760 0.033363578 -34.438138 39.024614 6588.0998 3.0700480e+09 0.11572825 0.033346616 -34.515243 38.908829 6590.4400 2.8139578e+09 0.11204189 0.030243544 -34.588717 38.806783 6592.7803 2.6056468e+09 0.10899039 0.027315618 -34.662190 38.704736 6595.1206 2.4343602e+09 0.10635234 0.025636074 -34.732564 38.599607 6597.4608 2.2795053e+09 0.10372724 0.025577305 -34.801946 38.493492 6599.8011 2.1343922e+09 0.10251768 0.024977913 -34.871328 38.387378 6602.1414 1.9996189e+09 0.10192300 0.027395990 -34.940711 38.281264 6604.4816 1.8725408e+09 0.10054143 0.026357260 -35.010095 38.175150 6606.8219 1.7398624e+09 0.099587494 0.026027013 -35.086912 38.061599 6609.1622 1.6059159e+09 0.096420139 0.023754107 -35.164968 37.946810 6611.5025 1.4770470e+09 0.093610014 0.024638041 -35.237132 37.837915 6613.8427 1.3662271e+09 0.092507071 0.023882786 -35.306516 37.731801 6616.1830 1.2766060e+09 0.090791263 0.023311019 -35.375901 37.625683 6618.5233 1.2012579e+09 0.089897928 0.024165918 -35.445292 37.519554 6620.8635 1.1304138e+09 0.088810131 0.025045468 -35.514683 37.413425 6623.2038 1.0574352e+09 0.086988759 0.024567329 -35.587248 37.300547 6625.5441 9.8312823e+08 0.085349483 0.026046837 -35.660713 37.185758 6627.8843 9.1129145e+08 0.083296191 0.025658415 -35.729269 37.076186 6630.2246 8.4957109e+08 0.081574183 0.025928855 -35.794570 36.970072 6632.5649 7.9531310e+08 0.079599587 0.026100078 -35.861800 36.862647 6634.9051 7.4073000e+08 0.077867167 0.026392868 -35.939857 36.747858 6637.2454 6.8746103e+08 0.076079318 0.026041217 -36.017914 36.633069 6639.5857 6.3383369e+08 0.075366719 0.025418740 -36.083557 36.526721 6641.9259 5.9236581e+08 0.075730625 0.025151445 -36.148858 36.420606 6644.2662 5.5899297e+08 0.074908818 0.025372379 -36.212029 36.316618 6646.6065 5.3103163e+08 0.074204317 0.026234085 -36.273258 36.214572 6648.9468 5.0373089e+08 0.073350922 0.027598046 -36.335382 36.111256 6651.2870 4.6818853e+08 0.073476150 0.026704128 -36.408847 35.991876 6653.6273 4.3494553e+08 0.073369755 0.027845935 -36.482312 35.872496 6655.9676 4.0039643e+08 0.072032915 0.028010015 -36.548468 35.768648 6658.3078 3.7626947e+08 0.070754780 0.030607025 -36.613769 35.666615 6660.6481 3.5450790e+08 0.069474149 0.032215090 -36.680660 35.556859 6662.9884 3.3215697e+08 0.068381662 0.032489738 -36.749532 35.437477 6665.3286 3.1120142e+08 0.067920325 0.028008643 -36.816360 35.322731 6667.6689 2.8787043e+08 0.067461969 0.027349159 -36.877580 35.220698 6670.0092 2.7086380e+08 0.066784505 0.027324381 -36.938801 35.118665 6672.3494 2.5494274e+08 0.066389959 0.027082145 -37.010035 35.002444 6674.6897 2.3883475e+08 0.064971553 0.029536611 -37.083511 34.883046 6677.0300 2.2344677e+08 0.062394013 0.032315592 -37.149148 34.774753 6679.3703 2.0766590e+08 0.061740290 0.029961810 -37.210367 34.672720 6681.7105 1.9544492e+08 0.062327371 0.030202460 -37.272166 34.567403 6684.0508 1.8378435e+08 0.062114299 0.032656669 -37.336449 34.448024 6686.3911 1.7088178e+08 0.060614023 0.033988610 -37.400791 34.328702 6688.7313 1.5840655e+08 0.056995444 0.033954006 -37.469658 34.213906 6691.0716 1.4764922e+08 0.055028419 0.032984370 -37.538530 34.099117 6693.4119 1.4014993e+08 0.053384440 0.031462793 -37.601025 33.991557 6695.7521 1.3460194e+08 0.052403171 0.029721315 -37.662246 33.885442 6698.0924 1.2719066e+08 0.050942238 0.030344655 -37.724639 33.776002 6700.4327 1.1919872e+08 0.048435641 0.030988646 -37.788921 33.661213 6702.7729 1.1413628e+08 0.046972457 0.033493930 -37.854146 33.546424 6705.1132 1.0673089e+08 0.046433814 0.036869877 -37.923020 33.431635 6707.4535 1.0267783e+08 0.045504505 0.040121865 -37.991572 33.317084 6709.7938 94655332. 0.043532699 0.040627679 -38.048718 33.210956 6712.1340 88597165. 0.040368582 0.042078790 -38.105864 33.104828 6714.4743 82818936. 0.037118347 0.047339066 -38.167132 32.993697 6716.8146 78790964. 0.034066152 0.049601130 -38.231413 32.878908 6719.1548 75052591. 0.030469361 0.051222741 -38.295695 32.764119 6721.4951 70109683. 0.028792113 0.050453074 -38.359976 32.649330 6723.8354 68613784. 0.024868071 0.049834842 -38.424258 32.533522 6726.1756 63056510. 0.014333411 0.040952952 -38.488539 32.414140 6728.5159 57727725. -0.018753803 0.040359305 -38.552507 32.295520 6730.8562 54679852. 0.0033083295 0.041552821 -38.609646 32.193487 6735.5367 51175183. 0.068837189 0.049863191 -38.728165 31.981847