# # 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 = 40.728158 km # Date (UTC) = 2012-01-12T10:15:58.016 # Date (julian) = 2455938.92775482 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6486.3397 2.1493774e+11 0.014902661 0.028163980 -36.808481 47.469978 6488.2961 1.7039020e+11 0.021843789 0.028753916 -36.913156 47.356432 6490.2524 1.3828368e+11 0.028384797 0.029343852 -37.001438 47.256634 6492.2088 1.1505466e+11 0.034424451 0.029933788 -37.089720 47.156836 6494.1651 9.8343514e+10 0.039919486 0.030523725 -37.183432 47.050901 6496.1215 8.4848651e+10 0.044979801 0.031113661 -37.284328 46.936845 6498.0779 7.3870361e+10 0.049530274 0.031703597 -37.382741 46.824362 6500.0342 6.5261747e+10 0.053452490 0.032293534 -37.467185 46.720727 6501.9906 5.8867964e+10 0.056869993 0.032883470 -37.551629 46.617091 6503.9470 5.3770635e+10 0.060081158 0.033473406 -37.636073 46.515550 6505.9033 4.9643372e+10 0.063593622 0.034063342 -37.720518 46.415753 6507.8597 4.5993058e+10 0.067966442 0.034653279 -37.804962 46.315957 6509.8161 4.2437930e+10 0.073559936 0.035243215 -37.900750 46.202751 6511.7724 3.8970859e+10 0.080795804 0.035833151 -37.997258 46.088694 6513.7288 3.5692275e+10 0.090049939 0.036423088 -38.085795 45.984059 6515.6851 3.3150979e+10 0.10203459 0.037013024 -38.170239 45.884262 6517.6415 3.1077276e+10 0.11660295 0.037602960 -38.255109 45.783432 6519.5979 2.9025245e+10 0.13321018 0.038192897 -38.347231 45.664989 6521.5542 2.6862404e+10 0.14991818 0.038782833 -38.439353 45.546545 6523.5106 2.4757986e+10 0.16065314 0.039305664 -38.522539 45.442569 6525.4670 2.2995031e+10 0.16752873 0.039728921 -38.603144 45.342771 6527.4233 2.1529677e+10 0.17157569 0.041023813 -38.683749 45.242319 6529.3797 2.0273685e+10 0.17353275 0.042840603 -38.764356 45.138684 6531.3361 1.9085100e+10 0.17495100 0.045717814 -38.844962 45.035050 6533.2924 1.7948334e+10 0.17642668 0.047643857 -38.932079 44.925524 6535.2488 1.6762134e+10 0.17626660 0.048116375 -39.024201 44.811467 6537.2051 1.5544551e+10 0.17574660 0.048781945 -39.111935 44.701484 6539.1615 1.4469521e+10 0.17466586 0.049839134 -39.188703 44.601688 6541.1179 1.3553007e+10 0.17337884 0.051288302 -39.265470 44.501891 6543.0742 1.2768575e+10 0.17212509 0.051401378 -39.342237 44.399482 6545.0306 1.2076438e+10 0.17114558 0.052455841 -39.419005 44.295847 6546.9870 1.1369505e+10 0.16954512 0.053276640 -39.496596 44.191428 6548.9433 1.0625229e+10 0.16758164 0.053949357 -39.584330 44.077371 6550.8997 9.8622264e+09 0.16637677 0.055210635 -39.672064 43.963314 6552.8561 9.1217412e+09 0.16547309 0.055371297 -39.751083 43.860590 6554.8124 8.4927406e+09 0.16384736 0.054849429 -39.827862 43.760779 6556.7688 7.9955811e+09 0.16165209 0.053900100 -39.904638 43.660238 6558.7251 7.5598324e+09 0.15900965 0.052621388 -39.981406 43.556602 6560.6815 7.1702103e+09 0.15612648 0.051659838 -40.058173 43.452967 6562.6379 6.7861079e+09 0.15324786 0.050272941 -40.138793 43.343231 6564.5942 6.3745724e+09 0.15017726 0.048502288 -40.222141 43.229175 6566.5506 5.9785053e+09 0.14757504 0.046871409 -40.302303 43.119480 6568.5070 5.5835179e+09 0.14567515 0.045305638 -40.375232 43.019682 6570.4633 5.2480106e+09 0.14436206 0.044725582 -40.448162 42.919885 6572.4197 4.9636035e+09 0.14284556 0.043989807 -40.521090 42.817398 6574.3761 4.7252357e+09 0.14070090 0.042674385 -40.594018 42.713763 6576.3324 4.5058214e+09 0.13859887 0.040988768 -40.667939 42.609135 6578.2888 4.2476713e+09 0.13643688 0.038193588 -40.751287 42.495079 6580.2451 3.9815152e+09 0.13438298 0.036294199 -40.834636 42.381023 6582.2015 3.7144030e+09 0.13250566 0.035238958 -40.906354 42.275467 6584.1579 3.4956479e+09 0.13042744 0.034429509 -40.975445 42.171832 6586.1142 3.3132621e+09 0.12836926 0.033169819 -41.044535 42.069004 6588.0706 3.1363874e+09 0.12683588 0.033356352 -41.113625 41.969207 6590.0270 2.9685051e+09 0.12465708 0.031011903 -41.182716 41.869410 6591.9833 2.8099481e+09 0.12197869 0.028092335 -41.251806 41.769613 6593.9397 2.6786005e+09 0.11928834 0.026228589 -41.320897 41.669815 6595.8961 2.5579386e+09 0.11619434 0.025716495 -41.390031 41.569934 6597.8524 2.4218419e+09 0.11390164 0.025453735 -41.468948 41.451577 6599.8088 2.2713894e+09 0.11250677 0.024978375 -41.547910 41.333134 6601.7652 2.1238780e+09 0.11157055 0.027406032 -41.619762 41.228121 6603.7215 1.9931963e+09 0.10964553 0.026236139 -41.688852 41.128325 6605.6779 1.8854684e+09 0.10852493 0.027233729 -41.757501 41.028528 6607.6342 1.7848849e+09 0.10615408 0.024454606 -41.822753 40.928730 6609.5906 1.6958132e+09 0.10295468 0.023881369 -41.888004 40.828932 6611.5470 1.6142610e+09 0.10034670 0.024609651 -41.955212 40.727178 6613.5033 1.5440332e+09 0.099522446 0.023758264 -42.024302 40.623542 6615.4597 1.4832301e+09 0.098310080 0.023265675 -42.093393 40.519907 6617.4161 1.4123853e+09 0.097460124 0.023577193 -42.167444 40.406848 6619.3724 1.3370293e+09 0.096939304 0.024615774 -42.242020 40.292792 6621.3288 1.2618388e+09 0.096204764 0.024980468 -42.310776 40.187637 6623.2852 1.1915394e+09 0.094866279 0.024597470 -42.376037 40.087825 6625.2415 1.1344746e+09 0.093702825 0.025685804 -42.441222 39.987937 6627.1979 1.0805746e+09 0.091781832 0.025393248 -42.502635 39.884302 6629.1542 1.0349585e+09 0.090688440 0.026081217 -42.564049 39.780666 6631.1106 9.9030767e+08 0.089001934 0.025942001 -42.627054 39.678622 6633.0670 9.4863462e+08 0.087706215 0.026163945 -42.692307 39.578824 6635.0233 9.0695629e+08 0.086234186 0.026403287 -42.757559 39.479026 6636.9797 8.5889868e+08 0.084698372 0.026169296 -42.830357 39.367689 6638.9361 8.0984240e+08 0.083592691 0.025630861 -42.904931 39.253634 6640.8924 7.5907869e+08 0.084133861 0.025161462 -42.972533 39.145098 6642.8488 7.1242356e+08 0.083715638 0.025186430 -43.033947 39.041462 6644.8052 6.7760537e+08 0.082569845 0.025430626 -43.095361 38.937826 6646.7615 6.5056691e+08 0.081209163 0.026314333 -43.156774 38.837738 6648.7179 6.2610121e+08 0.079820832 0.027444835 -43.218188 38.737941 6650.6742 5.9828188e+08 0.079203539 0.026409590 -43.282402 38.633592 6652.6306 5.6595766e+08 0.078766617 0.027424027 -43.352591 38.519536 6654.5870 5.3282860e+08 0.077967644 0.027786171 -43.422431 38.405894 6656.5433 5.0645901e+08 0.076438309 0.028500299 -43.483846 38.302258 6658.4997 4.8229469e+08 0.075299671 0.030947304 -43.545261 38.198623 6660.4561 4.6303414e+08 0.074221554 0.032040536 -43.605008 38.096655 6662.4124 4.4344240e+08 0.073123969 0.032812876 -43.662583 37.996858 6664.3688 4.2003696e+08 0.072283877 0.030856704 -43.720158 37.897061 6666.3252 4.0320804e+08 0.072343328 0.026971955 -43.788190 37.785441 6668.2815 3.7850352e+08 0.071722344 0.027719897 -43.858378 37.671384 6670.2379 3.5965155e+08 0.071492776 0.027218426 -43.921636 37.565163 6672.1942 3.3954680e+08 0.071359831 0.026992187 -43.979212 37.465367 6674.1506 3.1870812e+08 0.070668623 0.029081839 -44.036788 37.365570 6676.1070 3.0395285e+08 0.068648771 0.031782667 -44.094362 37.262149 6678.0633 2.9221752e+08 0.067820743 0.030894252 -44.151936 37.158514 6680.0197 2.8158117e+08 0.068019199 0.029445670 -44.212299 37.051347 6681.9761 2.7077134e+08 0.068662533 0.030406178 -44.278101 36.937292 6683.9324 2.5655362e+08 0.068905568 0.032555062 -44.343416 36.824082 6685.8888 2.4322381e+08 0.068480931 0.033643619 -44.400992 36.724283 6687.8452 2.2968825e+08 0.066364784 0.033871550 -44.458568 36.624485 6689.8015 2.1884956e+08 0.064386163 0.033294530 -44.516147 36.524681 6691.7579 2.1121050e+08 0.063355551 0.032822453 -44.573730 36.424870 6693.7142 2.0368460e+08 0.062426863 0.031359059 -44.631313 36.325058 6695.6706 1.9495338e+08 0.062204236 0.029736291 -44.695875 36.213150 6697.6270 1.8562743e+08 0.061575605 0.030170610 -44.761677 36.099093 6699.5833 1.7619645e+08 0.060297541 0.031052180 -44.820608 35.990972 6701.5397 1.6783120e+08 0.058732716 0.032201339 -44.874344 35.887336 6703.4961 1.6206384e+08 0.058823751 0.034916544 -44.928081 35.783701 6705.4524 1.5492972e+08 0.058923241 0.037472930 -44.993452 35.670018 6707.4088 1.4786204e+08 0.058579649 0.040128267 -45.059254 35.555962 6709.3652 1.4264170e+08 0.057797809 0.040900287 -45.116795 35.451669 6711.3215 1.3493287e+08 0.056068902 0.041058032 -45.170532 35.351870 6713.2779 1.2811412e+08 0.054180540 0.044691664 -45.224879 35.250939 6715.2342 1.2154256e+08 0.052374869 0.047618168 -45.286294 35.136884 6717.1906 1.1476024e+08 0.050409880 0.049862478 -45.347708 35.022829 6719.1470 1.1019043e+08 0.048287101 0.051230203 -45.402982 34.920178 6721.1033 1.0274392e+08 0.048646167 0.050335035 -45.456718 34.820382 6723.0597 97642175. 0.047540718 0.049402240 -45.511949 34.717811 6725.0161 96615001. 0.043382021 0.041565986 -45.573363 34.603754 6726.9724 97811806. 0.041747729 0.040960138 -45.634778 34.489697 6728.9288 93066119. 0.041387328 0.040944502 -45.685656 34.388688 6730.8852 87367134. 0.039547541 0.041592559 -45.735555 34.288892 6732.8415 78376071. 0.038063625 0.043895130 -45.789020 34.184679 6734.7979 72758070. 0.037454440 0.049305593 -45.850435 34.070621 6736.7542 73203748. 0.038453819 0.053206479 -45.911619 33.956993 6738.7106 70662332. 0.037256794 0.061233328 -45.965355 33.857196 6740.6670 68329121. 0.024628213 0.065189772 -46.019092 33.757400 6742.6233 64804320. 0.031917728 0.070129631 -46.074227 33.651545 6744.5797 59063806. 0.051573909 0.078241796 -46.131255 33.537488