# # 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 = 44.042055 km # Date (UTC) = 2011-01-24T05:17:37.331 # Date (julian) = 2455585.72057097 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.1389 9.2461016e+10 0.093513040 0.035039016 164.87122 54.477910 6511.9484 7.3345510e+10 0.10618990 0.035886203 165.08465 54.286519 6514.7578 5.9065741e+10 0.11900534 0.036733391 165.29339 54.095423 6517.5673 4.8575278e+10 0.13210089 0.037580578 165.49918 53.904327 6520.3768 4.0781597e+10 0.14558638 0.038427766 165.70498 53.713229 6523.1862 3.4895785e+10 0.15620715 0.039225268 165.91077 53.515676 6525.9957 2.9882116e+10 0.16102519 0.039668579 166.11274 53.321055 6528.8052 2.5574086e+10 0.16605724 0.042081216 166.31116 53.129992 6531.6146 2.2083985e+10 0.16988330 0.046123273 166.50961 52.938897 6534.4241 1.9196323e+10 0.17189329 0.048063192 166.70220 52.741947 6537.2336 1.6740231e+10 0.17266485 0.048795340 166.89330 52.546703 6540.0430 1.4768111e+10 0.17357619 0.050874429 167.08234 52.357188 6542.8525 1.3226588e+10 0.17241490 0.051325893 167.24613 52.187095 6545.6620 1.2019701e+10 0.17142588 0.052461498 167.41966 52.006754 6548.4714 1.0926642e+10 0.17043611 0.053808431 167.60341 51.814723 6551.2809 9.7734985e+09 0.16870921 0.055334351 167.78715 51.616276 6554.0904 8.6546309e+09 0.16576214 0.054834277 167.96524 51.417860 6556.8998 7.6217526e+09 0.16151033 0.053880833 168.14460 51.222421 6559.7093 6.7427987e+09 0.15556536 0.052307121 168.32687 51.032279 6562.5188 6.0694045e+09 0.14928791 0.050386276 168.47806 50.862186 6565.3282 5.5481009e+09 0.14416856 0.047945680 168.63742 50.679107 6568.1377 5.0941824e+09 0.14091672 0.045645079 168.80718 50.481377 6570.9472 4.6284400e+09 0.13840624 0.044525158 168.98359 50.290282 6573.7566 4.1930751e+09 0.13570983 0.043050297 169.13677 50.114663 6576.5661 3.8192467e+09 0.13287328 0.040719792 169.28417 49.940332 6579.3756 3.4833809e+09 0.12946813 0.036864028 169.44587 49.741885 6582.1850 3.1564733e+09 0.12675372 0.035243440 169.61334 49.543469 6584.9945 2.8675791e+09 0.12420286 0.033973764 169.76933 49.357184 6587.8040 2.6213327e+09 0.12160479 0.033336500 169.90792 49.187091 6590.6134 2.4134784e+09 0.11838052 0.029920963 170.05976 48.999341 6593.4229 2.2393897e+09 0.11501227 0.026709040 170.20655 48.818331 6596.2324 2.0685088e+09 0.11109829 0.025726217 170.34514 48.648239 6599.0418 1.9149641e+09 0.10810929 0.024932247 170.49780 48.452832 6601.8513 1.7762225e+09 0.10726814 0.027446611 170.64041 48.269475 6604.6608 1.6419127e+09 0.10515789 0.026463628 170.77270 48.099383 6607.4703 1.5213442e+09 0.10269469 0.024778427 170.92584 47.902501 6610.2797 1.4169583e+09 0.097974048 0.024270243 171.06362 47.720620 6613.0892 1.3086753e+09 0.095042329 0.023606313 171.18964 47.550483 6615.8987 1.2080926e+09 0.092269128 0.023279181 171.33654 47.352169 6618.7081 1.1188826e+09 0.090376336 0.024305511 171.47017 47.171765 6621.5176 1.0309952e+09 0.088487592 0.024917890 171.59719 47.000286 6624.3271 9.5664658e+08 0.085944767 0.025037381 171.74419 46.801841 6627.1365 8.8952583e+08 0.083828664 0.025369547 171.87239 46.622914 6629.9460 8.2080715e+08 0.082928556 0.025938067 171.99484 46.450704 6632.7555 7.6374544e+08 0.081455842 0.026122931 172.14181 46.259644 6635.5649 7.0853328e+08 0.080072342 0.026484507 172.26859 46.084104 6638.3744 6.5335888e+08 0.079128568 0.025655331 172.39021 45.909679 6641.1839 6.0905425e+08 0.079880985 0.025148925 172.52251 45.711231 6643.9933 5.6278146e+08 0.079334391 0.025342599 172.64483 45.535249 6646.8028 5.2038465e+08 0.078515640 0.026335701 172.76710 45.359351 6649.6123 4.8045832e+08 0.077751660 0.026789710 172.89940 45.160904 6652.4217 4.4471574e+08 0.077579188 0.027366557 173.01574 44.986397 6655.2312 4.2152542e+08 0.076368143 0.027705749 173.12914 44.816305 6658.0407 3.9820813e+08 0.074448334 0.030133205 173.24253 44.646213 6660.8501 3.7267462e+08 0.072713423 0.032398730 173.36858 44.457137 6663.6596 3.4700033e+08 0.071192142 0.032300421 173.49309 44.267450 6666.4691 3.1981740e+08 0.071166183 0.026999999 173.60019 44.097357 6669.2785 2.9927666e+08 0.070013626 0.028069624 173.72016 43.906804 6672.0880 2.8227955e+08 0.069973038 0.026930609 173.83866 43.718594 6674.8975 2.6157370e+08 0.068572290 0.029711869 173.94576 43.548502 6677.7069 2.4503249e+08 0.066332585 0.031353227 174.05285 43.378411 6680.5164 2.2809116e+08 0.066634907 0.029552931 174.16327 43.203048 6683.3259 2.1058181e+08 0.067375866 0.031666156 174.28819 43.004641 6686.1353 2.0001018e+08 0.066624487 0.033839829 174.39320 42.829604 6688.9448 1.8810884e+08 0.063113383 0.034003285 174.49549 42.659511 6691.7543 1.7605811e+08 0.062030246 0.032823303 174.60259 42.489419 6694.5637 1.6723255e+08 0.061159783 0.030470906 174.71652 42.300878 6697.3732 1.5741655e+08 0.060609974 0.030138496 174.82924 42.110657 6700.1827 1.4785000e+08 0.058702535 0.030803219 174.93004 41.940565 6702.9921 1.3862727e+08 0.057559406 0.033668966 175.03748 41.750547 6705.8016 1.2938857e+08 0.057471067 0.038093720 175.14449 41.561802 6708.6111 1.2247776e+08 0.056662409 0.040709028 175.24529 41.391710 6711.4206 1.1437731e+08 0.054227271 0.041170706 175.34132 41.221619 6714.2300 1.0442240e+08 0.051175167 0.047320701 175.43968 41.046781 6717.0395 95901569. 0.048347567 0.049871826 175.55729 40.848335 6719.8490 90814978. 0.045973829 0.050563270 175.65624 40.672765 6722.6584 88776963. 0.045259575 0.049791222 175.75419 40.498063 6725.4679 87188843. 0.040197427 0.041283751 175.86445 40.306966 6728.2774 82129260. 0.038553154 0.040021207 175.96116 40.133909 6731.0868 77045158. 0.036020821 0.041922824 176.05793 39.956130 6733.8963 71524821. 0.033718230 0.048790546 176.16081 39.757724 6736.7058 66694258. 0.034967418 0.053023177 176.25606 39.585103 6739.5152 62479247. 0.034674872 0.063457093 176.34852 39.415011 6742.3247 59113463. 0.030468892 0.069401934 176.43672 39.244919 6745.1342 57919512. 0.024118079 0.078623288 176.53573 39.053960 6747.9436 56795801. 0.015633467 0.067036305 176.63311 38.866156 6750.7531 55603992. -0.012861891 0.073290078 176.72131 38.696064 6753.5626 52776544. 0.0051914753 0.074797858 176.82109 38.503630 6756.3720 49218069. 0.053202202 0.075124208 176.91770 38.317301