# # 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 = 43.394465 km # Date (UTC) = 2016-01-31T08:58:16.308 # Date (julian) = 2457418.87379986 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.7912 6.8230651e+10 0.036608415 0.031918701 -1.8599300 63.985032 6500.6569 6.4727108e+10 0.044790796 0.032481303 -2.2112850 63.809356 6502.5226 6.1803995e+10 0.053305475 0.033043905 -2.5041681 63.662916 6504.3884 5.8404726e+10 0.062216333 0.033606506 -2.7838480 63.522341 6506.2541 5.4954890e+10 0.071438238 0.034169108 -3.0532860 63.381764 6508.1198 5.1646020e+10 0.081026914 0.034731710 -3.3508706 63.226502 6509.9855 4.8484341e+10 0.090974775 0.035294311 -3.6834603 63.052659 6511.8512 4.5275148e+10 0.10119879 0.035856913 -3.9411824 62.912083 6513.7169 4.2027161e+10 0.11167402 0.036419515 -4.1989044 62.771507 6515.5827 3.8802171e+10 0.12237888 0.036982116 -4.4566265 62.630932 6517.4484 3.5775050e+10 0.13331929 0.037544718 -4.7553876 62.463304 6519.3141 3.2948332e+10 0.14445163 0.038107319 -5.0568068 62.291826 6521.1798 3.0251202e+10 0.15568824 0.038669921 -5.3028143 62.151249 6523.0455 2.7732880e+10 0.16406249 0.039190393 -5.5488217 62.007368 6524.9112 2.5438449e+10 0.17063943 0.039750679 -5.7948292 61.860935 6526.7769 2.3432574e+10 0.17492593 0.040482622 -6.0307497 61.714532 6528.6427 2.1668780e+10 0.17818911 0.041952307 -6.2658707 61.568128 6530.5084 2.0030173e+10 0.18117380 0.044540414 -6.5060207 61.421695 6532.3741 1.8538161e+10 0.18352804 0.046996706 -6.7409917 61.275262 6534.2398 1.7155131e+10 0.18347177 0.048011641 -6.9694274 61.128829 6536.1055 1.5886697e+10 0.18184635 0.047884916 -7.1978227 60.982422 6537.9712 1.4742833e+10 0.18194521 0.049143121 -7.4260458 60.836023 6539.8370 1.3717550e+10 0.18097770 0.050656740 -7.6486251 60.689589 6541.7027 1.2788253e+10 0.17834106 0.051098659 -7.8693302 60.543156 6543.5684 1.1929255e+10 0.17611177 0.051531069 -8.0860509 60.396723 6545.4341 1.1127847e+10 0.17424660 0.052459456 -8.3027717 60.246702 6547.2998 1.0398648e+10 0.17245608 0.053401380 -8.5194924 60.094412 6549.1655 9.7139563e+09 0.17005054 0.054134972 -8.7308643 59.947457 6551.0312 9.0769148e+09 0.16804060 0.055246720 -8.9416874 59.799894 6552.8970 8.4796683e+09 0.16655517 0.055361001 -9.1525523 59.647601 6554.7627 7.9283278e+09 0.16433459 0.054848385 -9.3605437 59.495311 6556.6284 7.4306712e+09 0.16165996 0.053920740 -9.5655495 59.343021 6558.4941 6.9860744e+09 0.15891162 0.052818260 -9.7399425 59.214455 6560.3598 6.5730507e+09 0.15601494 0.051949878 -9.9058602 59.092457 6562.2255 6.1679429e+09 0.15293490 0.050665290 -10.096169 58.948224 6564.0913 5.7695306e+09 0.14940352 0.048730238 -10.295163 58.795932 6565.9570 5.3995334e+09 0.14646560 0.047231739 -10.488454 58.643642 6567.8227 5.0601667e+09 0.14418404 0.045921581 -10.681746 58.491352 6569.6884 4.7450018e+09 0.14167284 0.044897229 -10.875037 58.339061 6571.5541 4.4565173e+09 0.13914681 0.044351933 -11.045596 58.202327 6573.4198 4.1859268e+09 0.13645694 0.043320571 -11.201755 58.075450 6575.2856 3.9381069e+09 0.13397755 0.042088207 -11.372223 57.934265 6577.1513 3.7201316e+09 0.13132900 0.039982764 -11.553800 57.781972 6579.0170 3.5226381e+09 0.12828295 0.037061160 -11.735378 57.629683 6580.8827 3.3320700e+09 0.12603944 0.035705010 -11.912461 57.480437 6582.7484 3.1486113e+09 0.12433639 0.035090129 -12.063769 57.348652 6584.6141 2.9771150e+09 0.12237660 0.034180970 -12.217505 57.214828 6586.4798 2.8217419e+09 0.12037262 0.033165093 -12.393184 57.062575 6588.3456 2.6814655e+09 0.11874709 0.033264528 -12.557396 56.920257 6590.2113 2.5527002e+09 0.11665476 0.030669054 -12.703824 56.793353 6592.0770 2.4317522e+09 0.11425258 0.027998740 -12.858293 56.657737 6593.9427 2.3148014e+09 0.11189306 0.026225785 -13.028156 56.505447 6595.8084 2.2092055e+09 0.10923672 0.025707407 -13.176907 56.366197 6597.6741 2.1178376e+09 0.10713258 0.025509993 -13.313573 56.234412 6599.5399 2.0301213e+09 0.10560904 0.024962200 -13.466267 56.090609 6601.4056 1.9425501e+09 0.10497300 0.027236692 -13.630233 55.938353 6603.2713 1.8570639e+09 0.10350990 0.026502670 -13.770190 55.804102 6605.1370 1.7746724e+09 0.10251320 0.026779980 -13.906855 55.672319 6607.0027 1.6865499e+09 0.10098314 0.025701620 -14.066230 55.523501 6608.8684 1.5977593e+09 0.097915663 0.023709410 -14.225658 55.373740 6610.7342 1.5136025e+09 0.095040752 0.024704446 -14.352562 55.241954 6612.5999 1.4272222e+09 0.093577372 0.023872553 -14.481793 55.108206 6614.4656 1.3431430e+09 0.092454294 0.023619723 -14.639903 54.950096 6616.3313 1.2794997e+09 0.090951182 0.023334297 -14.786562 54.803436 6618.1970 1.2229075e+09 0.090375521 0.023919567 -14.913466 54.676533 6620.0627 1.1628316e+09 0.089856381 0.024787413 -15.040370 54.548078 6621.9284 1.1035221e+09 0.088898134 0.024781709 -15.167274 54.416292 6623.7942 1.0463566e+09 0.087450985 0.024786051 -15.299438 54.277407 6625.6599 9.8943138e+08 0.086738898 0.026185038 -15.445871 54.119259 6627.5256 9.3536811e+08 0.085224320 0.025519840 -15.578584 53.975929 6629.3913 8.8107157e+08 0.084394366 0.026038355 -15.700606 53.844144 6631.2570 8.2688426e+08 0.083076756 0.025956875 -15.820112 53.714878 6633.1227 7.7740444e+08 0.082170585 0.026173683 -15.937230 53.588001 6634.9885 7.4070457e+08 0.081047094 0.026398946 -16.067952 53.446613 6636.8542 7.1259426e+08 0.079713038 0.026218042 -16.214385 53.288465 6638.7199 6.8761014e+08 0.078794703 0.025640279 -16.334957 53.150267 6640.5856 6.5920694e+08 0.079267141 0.025199002 -16.447219 53.018481 6642.4513 6.3028649e+08 0.079161117 0.025170165 -16.562935 52.886697 6644.3170 6.0461503e+08 0.078226154 0.025377871 -16.680077 52.754912 6646.1828 5.8401906e+08 0.077279819 0.026014746 -16.808806 52.605749 6648.0485 5.6079824e+08 0.076440761 0.026996729 -16.943525 52.447601 6649.9142 5.3760190e+08 0.075756790 0.026373530 -17.056844 52.314574 6651.7799 5.1497980e+08 0.075264131 0.027081846 -17.169082 52.182816 6653.6456 4.9503776e+08 0.074800045 0.027855290 -17.276934 52.051035 6655.5113 4.7822502e+08 0.073518272 0.027821499 -17.384314 51.919252 6657.3770 4.6301371e+08 0.072126635 0.029338474 -17.491694 51.787468 6659.2428 4.4344924e+08 0.070934147 0.031783958 -17.599075 51.655683 6661.1085 4.2156114e+08 0.070007102 0.032590200 -17.706454 51.523899 6662.9742 4.0075654e+08 0.069290702 0.032497691 -17.813834 51.392114 6664.8399 3.8200077e+08 0.068915258 0.029132893 -17.937461 51.240389 6666.7056 3.6222641e+08 0.068934605 0.027046095 -18.065028 51.083535 6668.5713 3.4298401e+08 0.068271113 0.027976371 -18.167507 50.951776 6670.4371 3.2499188e+08 0.068401199 0.027126151 -18.269986 50.820018 6672.3028 3.0967806e+08 0.068362184 0.027055092 -18.372485 50.688233 6674.1685 2.9757473e+08 0.067706274 0.029096922 -18.474983 50.556449 6676.0342 2.8565519e+08 0.065861365 0.031735769 -18.577483 50.424664 6677.8999 2.7336460e+08 0.065166246 0.031078887 -18.679982 50.292879 6679.7656 2.6014395e+08 0.065328899 0.029635084 -18.778077 50.161095 6681.6314 2.4736144e+08 0.066197924 0.030141722 -18.875694 50.029310 6683.4971 2.3401511e+08 0.066704451 0.031917039 -18.989979 49.875027 6685.3628 2.1946195e+08 0.066610242 0.033088026 -19.104269 49.720026 6687.2285 2.0439687e+08 0.065095291 0.034215464 -19.201868 49.583385 6689.0942 1.9051541e+08 0.062804753 0.033931216 -19.299470 49.447216 6690.9599 1.7653270e+08 0.062228158 0.033005855 -19.397087 49.315431 6692.8256 1.6539276e+08 0.061650690 0.031806555 -19.494470 49.183647 6694.6914 1.5403706e+08 0.061178993 0.030292046 -19.587207 49.051862 6696.5571 1.4376288e+08 0.061018334 0.029907240 -19.679945 48.920077 6698.4228 1.3421265e+08 0.060300526 0.030798150 -19.772682 48.788294 6700.2885 1.2440077e+08 0.059079260 0.030881714 -19.865420 48.656512 6702.1542 1.1400364e+08 0.058042944 0.032999879 -19.958156 48.524727 6704.0199 1.0364189e+08 0.058625854 0.036187345 -20.050893 48.392942 6705.8857 94957719. 0.058932891 0.038243125 -20.139228 48.261158 6707.7514 87353648. 0.058893912 0.040079193 -20.227085 48.129373 6709.6171 79322409. 0.058320326 0.040740045 -20.319090 47.993448 6711.4828 73790551. 0.056828501 0.041241531 -20.411809 47.856810 6713.3485 68204373. 0.055309123 0.044947144 -20.514747 47.702882 6715.2142 65344356. 0.053798823 0.047597702 -20.618482 47.547279 6717.0800 63972537. 0.052058209 0.049869323 -20.706339 47.415494 6718.9457 64262154. 0.049965884 0.051285219 -20.793962 47.283710 6720.8114 64931473. 0.050331062 0.050325753 -20.876937 47.151925 6722.6771 66320921. 0.049642746 0.049768134 -20.959932 47.020140 6724.5428 69255490. 0.046569590 0.045393816 -21.047762 46.888356 6726.4085 73320840. 0.044037320 0.040955052 -21.135619 46.756571 6728.2742 76931352. 0.043564351 0.040016795 -21.218838 46.620150 6730.1400 80432330. 0.042280555 0.040570806 -21.301813 46.483485 6732.0057 82080562. 0.040820074 0.043741254 -21.384774 46.351241 6733.8714 84695284. 0.039964137 0.048655353 -21.467734 46.219482 6735.7371 85825749. 0.041318882 0.050075927 -21.546547 46.087701 6737.6028 85758118. 0.042579635 0.056055877 -21.624642 45.955916 6739.4685 84257153. 0.042834860 0.063399955 -21.706657 45.824132 6741.3343 82626307. 0.041522882 0.066712008 -21.789633 45.692347 6743.2000 80444209. 0.038160842 0.072396442 -21.880713 45.540670 6745.0657 77874325. 0.035498749 0.078594501 -21.973922 45.383538 6746.9314 74745260. 0.031164408 0.068158678 -22.056898 45.246873 6748.7971 71119834. 0.030997322 0.071210568 -22.139853 45.110229 6750.6628 65686418. 0.028004223 0.073135948 -22.217959 44.978443 6752.5286 61987238. 0.024916258 0.073522845 -22.296038 44.846684 6754.3943 57938287. 0.022684967 0.075579442 -22.369499 44.714901 6756.2600 53061993. 0.014799218 0.074835880 -22.442714 44.583116 6758.1257 47135742. 0.017397403 0.073971127 -22.520323 44.451331 6759.9914 42240244. 0.023111300 0.076059199 -22.598418 44.319545 6761.8571 39766125. 0.031284003 0.078039040 -22.672355 44.183604 6763.7228 38888341. 0.037621118 0.078639203 -22.745569 44.046939 6765.5886 38835009. 0.041580095 0.079638637 -22.822701 43.914193