# # 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 = 50.980844 km # Date (UTC) = 2012-12-30T10:02:56.583 # Date (julian) = 2456291.91871045 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.0950 5.3965786e+10 0.073955335 0.034121135 103.08079 35.008579 6508.4223 4.9008609e+10 0.084798622 0.034822934 103.14167 34.898994 6510.7496 4.4786611e+10 0.095966005 0.035524733 103.20255 34.789409 6513.0770 4.1192903e+10 0.10748510 0.036226532 103.26566 34.679823 6515.4043 3.7954035e+10 0.11931522 0.036928331 103.33060 34.570236 6517.7316 3.4853054e+10 0.13138754 0.037630130 103.39623 34.459480 6520.0589 3.1698148e+10 0.14359818 0.038331929 103.46929 34.336194 6522.3863 2.8628791e+10 0.15491254 0.039018399 103.54235 34.212907 6524.7136 2.5855242e+10 0.16144551 0.039680467 103.60451 34.101886 6527.0409 2.3570672e+10 0.16673279 0.040746176 103.66539 33.992299 6529.3682 2.1587977e+10 0.17038674 0.042822364 103.72955 33.876801 6531.6956 1.9666341e+10 0.17401418 0.046241089 103.79805 33.753514 6534.0229 1.7890657e+10 0.17583916 0.047950962 103.86470 33.634513 6536.3502 1.6336073e+10 0.17619789 0.048103854 103.92559 33.528972 6538.6775 1.5061249e+10 0.17708869 0.049486611 103.98648 33.423432 6541.0049 1.3971147e+10 0.17642565 0.051324948 104.04737 33.314743 6543.3322 1.2998377e+10 0.17499016 0.051469081 104.10825 33.205156 6545.6595 1.2040642e+10 0.17252843 0.052461476 104.17152 33.091265 6547.9869 1.1065670e+10 0.17013407 0.053662646 104.24001 32.967979 6550.3142 1.0125233e+10 0.16747359 0.055064027 104.30756 32.846393 6552.6415 9.2907570e+09 0.16486110 0.055425300 104.36844 32.736807 6554.9688 8.6003015e+09 0.16246282 0.054852711 104.42932 32.627220 6557.2962 8.0372457e+09 0.15962716 0.053680475 104.48753 32.520305 6559.6235 7.5360720e+09 0.15658877 0.052316808 104.54435 32.414764 6561.9508 7.0453030e+09 0.15349572 0.050904144 104.60348 32.305730 6564.2781 6.5478691e+09 0.15026280 0.048645547 104.67197 32.182443 6566.6055 6.0485699e+09 0.14797340 0.046840377 104.74039 32.059250 6568.9328 5.6108716e+09 0.14574767 0.044914209 104.79721 31.949663 6571.2601 5.2582519e+09 0.14398928 0.044432233 104.85403 31.840077 6573.5874 4.9399761e+09 0.14158318 0.043186076 104.91471 31.725530 6575.9148 4.6091659e+09 0.13898691 0.041456911 104.97864 31.606809 6578.2421 4.2892488e+09 0.13626032 0.038267325 105.04006 31.491313 6580.5694 3.9954687e+09 0.13336783 0.035994530 105.09688 31.381727 6582.8967 3.7547291e+09 0.13084531 0.035049766 105.15371 31.272141 6585.2241 3.5497367e+09 0.12806450 0.033791635 105.21054 31.162541 6587.5514 3.3624705e+09 0.12533865 0.033280537 105.26737 31.052940 6589.8787 3.1734783e+09 0.12241989 0.031302674 105.32722 30.939456 6592.2060 2.9707797e+09 0.11901513 0.027873392 105.39114 30.820736 6594.5334 2.7720010e+09 0.11570512 0.025879727 105.45340 30.704168 6596.8607 2.5889216e+09 0.11201652 0.025723361 105.51022 30.594582 6599.1880 2.4399763e+09 0.10930131 0.024941039 105.56704 30.484995 6601.5154 2.3173139e+09 0.10860652 0.027288391 105.62386 30.378542 6603.8427 2.2032313e+09 0.10699268 0.026164411 105.68069 30.273016 6606.1700 2.0934752e+09 0.10670517 0.027198472 105.73829 30.162017 6608.4973 1.9642468e+09 0.10433236 0.023719222 105.79765 30.038730 6610.8247 1.8340487e+09 0.10145574 0.024790919 105.85671 29.917538 6613.1520 1.7261526e+09 0.10050265 0.023629353 105.91354 29.811997 6615.4793 1.6384029e+09 0.099229030 0.023266279 105.97037 29.706455 6617.8066 1.5578135e+09 0.098426904 0.023706686 106.02886 29.589298 6620.1340 1.4711801e+09 0.097895361 0.024810366 106.08822 29.466011 6622.4613 1.3821905e+09 0.096691313 0.024635213 106.14451 29.350975 6624.7886 1.3071699e+09 0.095171558 0.025284450 106.19728 29.245447 6627.1159 1.2453162e+09 0.093110452 0.025361596 106.25007 29.139831 6629.4433 1.1821742e+09 0.091968614 0.026028961 106.30940 29.016620 6631.7706 1.1203428e+09 0.090156030 0.026009042 106.36876 28.893334 6634.0979 1.0599483e+09 0.088577861 0.026333985 106.42278 28.784445 6636.4252 1.0058577e+09 0.086970274 0.026384613 106.47554 28.678918 6638.7526 9.5586108e+08 0.085699892 0.025638855 106.53060 28.567229 6641.0799 9.0670542e+08 0.086100589 0.025148572 106.58995 28.443942 6643.4072 8.5486013e+08 0.085351187 0.025254104 106.64828 28.323439 6645.7345 8.1183729e+08 0.084035261 0.025795792 106.70105 28.217897 6648.0619 7.7379310e+08 0.082694730 0.027005703 106.75382 28.112356 6650.3892 7.3782434e+08 0.081683684 0.026344336 106.81116 27.997676 6652.7165 7.0156027e+08 0.081113603 0.027447666 106.87052 27.878955 6655.0439 6.6229407e+08 0.080028001 0.027628336 106.92452 27.766876 6657.3712 6.2916478e+08 0.078291299 0.029331666 106.97322 27.661349 6659.6985 6.0102068e+08 0.076994742 0.031688890 107.02235 27.555118 6662.0258 5.7256648e+08 0.075675579 0.033029779 107.08171 27.431831 6664.3532 5.4597327e+08 0.074693381 0.030913905 107.14107 27.308545 6666.6805 5.1751423e+08 0.074777255 0.027041196 107.19138 27.200346 6669.0078 4.9268322e+08 0.073648835 0.028347683 107.24008 27.094819 6671.3351 4.7266742e+08 0.073862973 0.026870124 107.29114 26.984195 6673.6625 4.4739138e+08 0.073359507 0.028449975 107.34594 26.865457 6675.9898 4.2616134e+08 0.071150802 0.031694161 107.40035 26.749309 6678.3171 4.0483567e+08 0.070179867 0.030724515 107.45311 26.643781 6680.6444 3.8599414e+08 0.070814088 0.029580578 107.50587 26.538254 6682.9718 3.7194016e+08 0.071538228 0.031167008 107.56012 26.419722 6685.2991 3.5392767e+08 0.071320696 0.033020751 107.61492 26.296435 6687.6264 3.3310389e+08 0.069270852 0.033993541 107.66971 26.175624 6689.9537 3.1592899e+08 0.067102867 0.033157503 107.72451 26.056903 6692.2811 2.9860384e+08 0.066098053 0.032438940 107.77716 25.942829 6694.6084 2.8909827e+08 0.065313984 0.030408329 107.82586 25.837302 6696.9357 2.7900070e+08 0.064879868 0.030064559 107.87456 25.731774 6699.2630 2.6566408e+08 0.063530576 0.031347715 107.92868 25.614526 6701.5904 2.5508501e+08 0.061702144 0.032275691 107.98347 25.495805 6703.9177 2.4370697e+08 0.061933208 0.035971611 108.03827 25.377085 6706.2450 2.3282269e+08 0.062108755 0.038872852 108.09306 25.258366 6708.5724 2.2075007e+08 0.061898099 0.040666849 108.14270 25.146346 6710.8997 2.1136332e+08 0.060491762 0.040672596 108.18736 25.040803 6713.2270 2.0348236e+08 0.058541598 0.044507648 108.23246 24.934670 6715.5543 1.9670043e+08 0.056685793 0.047945541 108.28726 24.815949 6717.8817 1.8683382e+08 0.054745958 0.049819734 108.34205 24.697229 6720.2090 1.7741672e+08 0.053856098 0.050395552 108.39684 24.578508 6722.5363 1.7082784e+08 0.053659585 0.049942188 108.45164 24.459788 6724.8636 1.6381958e+08 0.049786326 0.042714764 108.50340 24.341067 6727.1910 1.5363379e+08 0.048068596 0.040705973 108.55362 24.222347 6729.5183 1.4200111e+08 0.047600064 0.040699977 108.60602 24.103627 6731.8456 1.3130408e+08 0.045921389 0.043432949 108.66081 23.984906 6734.1729 1.2631226e+08 0.045004163 0.049343194 108.71430 23.866186 6736.5003 1.2257045e+08 0.046824137 0.052246285 108.76453 23.747464 6738.8276 1.2428139e+08 0.047582825 0.061877358 108.81423 23.630378 6741.1549 1.2422459e+08 0.046132405 0.066200522 108.85888 23.528896 6743.4822 1.2088879e+08 0.041627610 0.074300635 108.90354 23.427413 6745.8096 1.1489648e+08 0.039306960 0.078907222 108.95171 23.315048 6748.1369 1.0716649e+08 0.034985110 0.067737108 109.00194 23.196328 6750.4642 1.0195367e+08 0.031967968 0.072796807 109.05418 23.077608 6752.7915 99704462. 0.028847119 0.073218509 109.10898 22.958888 6755.1189 99008906. 0.026641284 0.074553227 109.16262 22.840168 6757.4462 94800875. 0.024192145 0.075385961 109.21285 22.721447 6759.7735 91985932. 0.024825102 0.076006619 109.26308 22.602726 6762.1009 85402790. 0.028298997 0.077888163 109.31331 22.484006 6764.4282 79462953. 0.031066011 0.079503798 109.36354 22.365285 6766.7555 75113230. 0.031316208 0.081422710 109.42002 22.236333 6769.0828 71169680. 0.025996500 0.084655159 109.47742 22.105868 6771.4102 68163064. 0.021340292 0.090299948 109.52361 21.986619 6773.7375 66111766. 0.016671925 0.095944737 109.56927 21.867899 6776.0648 60767478. 0.011633588 0.10158953 109.61843 21.749179 6778.3921 60012550. 0.0066865857 0.10723431 109.66865 21.630458 6780.7195 62354075. 0.0016268459 0.11287910 109.71888 21.514363 6783.0468 60526702. -0.0056141553 0.11852389 109.76911 21.400208 6785.3741 57764740. -0.028580600 0.12416868 109.81934 21.284296 6787.7014 51066492. -0.018445229 0.12981347 109.86957 21.165575 6790.0288 47513940. 0.017129329 0.13545826 109.91891 21.046851