# # 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 = 48.300714 km # Date (UTC) = 2011-11-26T10:29:26.498 # Date (julian) = 2455891.93711224 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6492.3041 2.0531650e+11 0.031688480 0.029962542 -36.954517 55.833737 6494.5313 1.7729396e+11 0.039319707 0.030634123 -37.103082 55.724498 6496.7584 1.5432691e+11 0.046607746 0.031305703 -37.259337 55.607998 6498.9855 1.3345186e+11 0.053548727 0.031977284 -37.419141 55.488145 6501.2126 1.1542047e+11 0.060045605 0.032648865 -37.568304 55.378507 6503.4397 1.0107943e+11 0.066123027 0.033320445 -37.712498 55.273637 6505.6668 8.9651546e+10 0.071998297 0.033992026 -37.862830 55.162876 6507.8939 7.9428463e+10 0.077932926 0.034663606 -38.022635 55.043024 6510.1211 6.9822941e+10 0.084062632 0.035335187 -38.172926 54.927318 6512.3482 6.1522309e+10 0.090694734 0.036006768 -38.308383 54.818079 6514.5753 5.5002862e+10 0.098309371 0.036678348 -38.443840 54.709287 6516.8024 5.0144829e+10 0.10741593 0.037349929 -38.579297 54.604417 6519.0295 4.6029734e+10 0.11807819 0.038021510 -38.714754 54.499546 6521.2566 4.1989785e+10 0.13009860 0.038693090 -38.865956 54.378423 6523.4837 3.8103401e+10 0.13922826 0.039299008 -39.020765 54.253576 6525.7109 3.4487585e+10 0.14681009 0.039701086 -39.156347 54.144922 6527.9380 3.1456772e+10 0.15549282 0.041397454 -39.287453 54.040038 6530.1651 2.9076194e+10 0.16397872 0.044059821 -39.416264 53.932876 6532.3922 2.7057509e+10 0.17057583 0.047011839 -39.542982 53.823637 6534.6193 2.5087789e+10 0.17375947 0.048117806 -39.675114 53.710739 6536.8464 2.3017835e+10 0.17400505 0.048547829 -39.824930 53.585892 6539.0736 2.0930086e+10 0.17257504 0.049732660 -39.969389 53.465679 6541.3007 1.9032731e+10 0.17081432 0.051229025 -40.096107 53.360808 6543.5278 1.7502073e+10 0.16884190 0.051520412 -40.222825 53.255938 6545.7549 1.6332709e+10 0.16689185 0.052462330 -40.345419 53.146946 6547.9820 1.5252746e+10 0.16575422 0.053660805 -40.467766 53.037708 6550.2091 1.4148184e+10 0.16454579 0.055037723 -40.601561 52.918248 6552.4362 1.3027248e+10 0.16318762 0.055476965 -40.741392 52.793400 6554.6634 1.1946465e+10 0.16161677 0.054846301 -40.869817 52.678736 6556.8905 1.1039132e+10 0.16000818 0.053882210 -40.992164 52.569497 6559.1176 1.0284738e+10 0.15778731 0.052373909 -41.112921 52.460258 6561.3447 9.6272113e+09 0.15557852 0.051202820 -41.230899 52.351019 6563.5718 9.0233237e+09 0.15339583 0.049266907 -41.348878 52.241780 6565.7989 8.4980772e+09 0.15136856 0.047411200 -41.466856 52.132541 6568.0260 8.0128315e+09 0.14998575 0.045747719 -41.584835 52.023302 6570.2532 7.5054602e+09 0.14855961 0.044812641 -41.712144 51.901784 6572.4803 7.0010992e+09 0.14675420 0.043955114 -41.841985 51.776937 6574.7074 6.5085803e+09 0.14445150 0.042515247 -41.962522 51.664330 6576.9345 6.0881948e+09 0.14178974 0.040295757 -42.080501 51.555091 6579.1616 5.7363882e+09 0.13824866 0.036981647 -42.196314 51.445852 6581.3887 5.4073366e+09 0.13536120 0.035478894 -42.309923 51.336613 6583.6159 5.1029734e+09 0.13295167 0.034709950 -42.422627 51.227374 6585.8430 4.8467429e+09 0.13076427 0.033296841 -42.531866 51.118135 6588.0701 4.6111123e+09 0.12945051 0.033356527 -42.641105 51.008896 6590.2972 4.3716782e+09 0.12747738 0.030509236 -42.764681 50.885320 6592.5243 4.1161193e+09 0.12538542 0.027564260 -42.889529 50.760473 6594.7514 3.8567483e+09 0.12331538 0.025760027 -43.000092 50.649910 6596.9785 3.6356478e+09 0.12092265 0.025722825 -43.109347 50.540655 6599.2057 3.4475661e+09 0.11928900 0.024942099 -43.218592 50.431409 6601.4328 3.2769440e+09 0.11923409 0.027249500 -43.327831 50.322170 6603.6599 3.1117227e+09 0.11790417 0.026272623 -43.435587 50.212931 6605.8870 2.9661487e+09 0.11731187 0.027409166 -43.540456 50.103692 6608.1141 2.8248918e+09 0.11489429 0.023729354 -43.646085 49.993661 6610.3412 2.6742569e+09 0.11166987 0.024329017 -43.765939 49.868814 6612.5683 2.5198923e+09 0.10970496 0.023896105 -43.884858 49.744509 6614.7955 2.3683162e+09 0.10844006 0.023392451 -43.985358 49.630902 6617.0226 2.2429579e+09 0.10673634 0.023446734 -44.085857 49.517294 6619.2497 2.1311617e+09 0.10567145 0.024586161 -44.189676 49.407006 6621.4768 2.0282364e+09 0.10427721 0.024931407 -44.294545 49.297767 6623.7039 1.9325863e+09 0.10196753 0.024752617 -44.397355 49.188528 6625.9310 1.8483660e+09 0.10015009 0.026508610 -44.497857 49.079289 6628.1582 1.7671230e+09 0.097721678 0.025767306 -44.600068 48.967199 6630.3853 1.6764848e+09 0.095625773 0.025929251 -44.709932 48.842352 6632.6124 1.5801208e+09 0.093725439 0.026105775 -44.818109 48.720317 6634.8395 1.4910126e+09 0.092201634 0.026388080 -44.918609 48.611078 6637.0666 1.4153870e+09 0.090794457 0.026128788 -45.019108 48.501839 6639.2937 1.3559858e+09 0.090096348 0.025523091 -45.115713 48.388703 6641.5208 1.2987136e+09 0.090703528 0.025150069 -45.211844 48.275093 6643.7480 1.2396192e+09 0.089941177 0.025305551 -45.307975 48.164119 6645.9751 1.1892449e+09 0.088901302 0.025908469 -45.404106 48.054880 6648.2022 1.1307956e+09 0.087908337 0.027099628 -45.502985 47.940732 6650.4293 1.0719834e+09 0.087262999 0.026353516 -45.607857 47.815885 6652.6564 1.0160995e+09 0.086812548 0.027431128 -45.710005 47.694540 6654.8835 9.5982772e+08 0.085744946 0.027659833 -45.806150 47.580916 6657.1106 9.1576781e+08 0.083729954 0.029029457 -45.902190 47.467396 6659.3378 8.7477147e+08 0.082102373 0.031764141 -45.993950 47.358157 6661.5649 8.3444734e+08 0.080592253 0.032822653 -46.085711 47.248918 6663.7920 8.0007458e+08 0.079048064 0.032263733 -46.177471 47.139679 6666.0191 7.6866324e+08 0.078816706 0.026912318 -46.269232 47.030439 6668.2462 7.3358836e+08 0.077796868 0.027688663 -46.364619 46.911996 6670.4733 6.9891350e+08 0.077233882 0.027109344 -46.464497 46.782154 6672.7005 6.6249792e+08 0.076764150 0.027285593 -46.560769 46.661465 6674.9276 6.2480691e+08 0.075230719 0.029737254 -46.652529 46.552227 6677.1547 5.9760208e+08 0.072845593 0.032138323 -46.743609 46.442988 6679.3818 5.7407012e+08 0.072279942 0.029952273 -46.831000 46.333749 6681.6089 5.5327779e+08 0.073087687 0.030124505 -46.918391 46.224510 6683.8360 5.3058136e+08 0.073405932 0.032413786 -47.012279 46.097407 6686.0631 5.0480146e+08 0.072974646 0.033797820 -47.107162 45.967566 6688.2903 4.8027299e+08 0.070506552 0.033852191 -47.195568 45.855540 6690.5174 4.6002771e+08 0.068977844 0.033056573 -47.282960 45.746300 6692.7445 4.4373582e+08 0.068115608 0.031900802 -47.377546 45.628068 6694.9716 4.2507625e+08 0.067568980 0.029899277 -47.477424 45.503221 6697.1987 4.0069465e+08 0.067120507 0.030116413 -47.567631 45.384822 6699.4258 3.7811744e+08 0.065811414 0.031197512 -47.650652 45.271212 6701.6529 3.5702997e+08 0.064069886 0.032367503 -47.733673 45.158849 6703.8801 3.4501935e+08 0.064129761 0.035877427 -47.816696 45.049610 6706.1072 3.3375325e+08 0.064010388 0.038632935 -47.899724 44.940353 6708.3343 3.1622827e+08 0.063523564 0.040407609 -47.989585 44.810601 6710.5614 2.9980594e+08 0.061959306 0.040606383 -48.079476 44.680760 6712.7885 2.8461793e+08 0.059726146 0.043293978 -48.162537 44.571400 6715.0156 2.7401715e+08 0.057444057 0.047394580 -48.245558 44.462162 6717.2428 2.6405669e+08 0.055045812 0.049859253 -48.333426 44.341910 6719.4699 2.5375129e+08 0.052840843 0.050923432 -48.423316 44.217063 6721.6970 2.4098933e+08 0.052785795 0.050513903 -48.505304 44.100117 6723.9241 2.2886728e+08 0.050517073 0.049884328 -48.583956 43.986508 6726.1512 2.1858378e+08 0.046143591 0.040952731 -48.667267 43.868240 6728.3783 2.0821801e+08 0.045033430 0.040164311 -48.757157 43.743393 6730.6054 1.9768422e+08 0.042985408 0.041209035 -48.842416 43.623177 6732.8326 1.8739322e+08 0.041188589 0.043893480 -48.921069 43.509569 6735.0597 1.7736532e+08 0.040799315 0.049356777 -49.001110 43.394572 6737.2868 1.6874423e+08 0.041993899 0.055049127 -49.090998 43.269725 6739.5139 1.6213808e+08 0.041860621 0.063455468 -49.178997 43.146766 6741.7410 1.5543051e+08 0.039463593 0.067872111 -49.253291 43.037511 6743.9681 1.4990155e+08 0.034122549 0.077578420 -49.327586 42.928256 6746.1952 1.4112177e+08 0.031607128 0.076717333 -49.410710 42.801855 6748.4224 1.3108091e+08 0.027544251 0.069238952 -49.495605 42.672015 6750.6495 1.2366925e+08 0.023995738 0.073113136 -49.571687 42.559284 6752.8766 1.1996141e+08 0.020637750 0.073120098 -49.645971 42.450045 6755.1037 1.2010061e+08 0.018478674 0.074559877 -49.726004 42.332348 6757.3308 1.1534835e+08 0.015591072 0.075736105 -49.810899 42.207501 6759.5579 1.0961150e+08 0.015781994 0.075954593 -49.895796 42.079959 6761.7851 1.0433127e+08 0.017960610 0.078033085 -49.980693 41.950116 6764.0122 1.0135709e+08 0.021079190 0.079483868 -50.057544 41.831338 6766.2393 98385182. 0.021961427 0.080255003 -50.127457 41.722099 6768.4664 92326061. 0.017159304 0.082534225 -50.199851 41.607742 6770.6935 88663485. 0.011973158 0.088561768 -50.279753 41.477902 6772.9206 84881006. 0.0070575655 0.093963501 -50.359655 41.349290 6775.1477 81724827. 0.0021425149 0.099365234 -50.439557 41.224443 6777.3749 78153560. -0.0030171951 0.10476697 -50.519460 41.099596 6779.6020 73476559. -0.0087075573 0.11016870 -50.599362 40.974748 6781.8291 71453543. -0.014059259 0.11557043 -50.676855 40.852611 6784.0562 68218491. -0.020293706 0.12097217 -50.746769 40.739001 6786.2833 65868228. -0.027164007 0.12637390 -50.816682 40.625391 6788.5104 64665288. -0.035125655 0.13177563 -50.896110 40.501077 6790.7375 61119303. -0.048876459 0.13717736 -50.976012 40.376230 6792.9647 58012224. -0.10052546 0.14257910 -51.051170 40.251383 6795.1918 55315990. -0.069843867 0.14798083 -51.126079 40.126536 6799.6460 52771311. 0.017873343 0.15878430 -51.285622 39.867117