# # 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 = 45.285107 km # Date (UTC) = 2012-01-17T09:19:43.605 # Date (julian) = 2455943.88869913 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.5312 1.7892134e+11 0.045553460 0.032141831 -22.409749 48.736532 6501.8588 1.4307303e+11 0.054333103 0.032843724 -22.538767 48.590958 6504.1864 1.1570730e+11 0.063082501 0.033545617 -22.658811 48.455256 6506.5141 9.6882637e+10 0.072069514 0.034247509 -22.778855 48.315692 6508.8417 8.2841919e+10 0.081396143 0.034949402 -22.898899 48.174772 6511.1693 7.1830235e+10 0.091142936 0.035651295 -23.018942 48.038153 6513.4970 6.2909259e+10 0.10138001 0.036353188 -23.138986 47.902450 6515.8246 5.5857376e+10 0.11226783 0.037055081 -23.259029 47.762008 6518.1523 4.9941276e+10 0.12377529 0.037756973 -23.379065 47.621086 6520.4799 4.4874645e+10 0.13590488 0.038458866 -23.493938 47.480165 6522.8075 4.0285731e+10 0.14634023 0.039128712 -23.608763 47.339643 6525.1352 3.6270669e+10 0.15336775 0.039766789 -23.723587 47.203942 6527.4628 3.2902804e+10 0.15889475 0.041052470 -23.836109 47.070229 6529.7904 3.0067116e+10 0.16420348 0.043494884 -23.936579 46.946926 6532.1181 2.7805508e+10 0.16896094 0.046782831 -24.037049 46.823622 6534.4457 2.5751280e+10 0.17174921 0.048069240 -24.146385 46.683219 6536.7734 2.3720318e+10 0.17338820 0.048482437 -24.255990 46.542583 6539.1010 2.1657316e+10 0.17420415 0.049765871 -24.365595 46.406882 6541.4286 1.9748470e+10 0.17364735 0.051187530 -24.475200 46.270458 6543.7563 1.8052998e+10 0.17182650 0.051580377 -24.584805 46.129537 6546.0839 1.6508790e+10 0.16939470 0.052533561 -24.694410 45.988616 6548.4115 1.5131634e+10 0.16766383 0.053790544 -24.804015 45.847695 6550.7392 1.3878580e+10 0.16566740 0.055170442 -24.912019 45.708375 6553.0668 1.2774183e+10 0.16399847 0.055301483 -25.016405 45.572674 6555.3944 1.1750685e+10 0.16179927 0.054521936 -25.122831 45.434933 6557.7221 1.0830246e+10 0.15962470 0.053413503 -25.232437 45.294012 6560.0497 9.9534297e+09 0.15720861 0.052229480 -25.339563 45.153091 6562.3774 9.1461695e+09 0.15440603 0.050520834 -25.443948 45.012171 6564.7050 8.4722629e+09 0.15186875 0.048452094 -25.538489 44.883646 6567.0326 7.9243869e+09 0.14973579 0.046589597 -25.625258 44.764909 6569.3603 7.4527080e+09 0.14764588 0.044875872 -25.718530 44.637983 6571.6879 6.9951137e+09 0.14594834 0.044315395 -25.822915 44.497062 6574.0155 6.5251847e+09 0.14335930 0.042847541 -25.924936 44.356142 6576.3432 6.0554562e+09 0.14100114 0.040976387 -26.024103 44.215223 6578.6708 5.6181866e+09 0.13799717 0.037590317 -26.123269 44.074303 6580.9985 5.2089942e+09 0.13503577 0.035598038 -26.222436 43.933382 6583.3261 4.8581909e+09 0.13253430 0.034856614 -26.313901 43.806241 6585.6537 4.5782872e+09 0.12945581 0.033448133 -26.400670 43.687504 6587.9814 4.3342347e+09 0.12669151 0.033375802 -26.492788 43.559195 6590.3090 4.0962515e+09 0.12309791 0.030487276 -26.591954 43.418274 6592.6366 3.8424699e+09 0.11949246 0.027455156 -26.688430 43.277354 6594.9643 3.5870299e+09 0.11625744 0.025643182 -26.782377 43.136435 6597.2919 3.3407240e+09 0.11331712 0.025630611 -26.876325 42.995514 6599.6195 3.1126917e+09 0.11211464 0.024966993 -26.970272 42.854593 6601.9472 2.9190997e+09 0.11195992 0.027491761 -27.056191 42.728836 6604.2748 2.7639473e+09 0.11062691 0.026234458 -27.138393 42.610099 6606.6025 2.6265658e+09 0.10991819 0.026421360 -27.226396 42.480406 6608.9301 2.4900770e+09 0.10686477 0.023707780 -27.320343 42.339485 6611.2577 2.3407682e+09 0.10393695 0.024794097 -27.414290 42.198564 6613.5854 2.1899071e+09 0.10294283 0.023788365 -27.508238 42.057643 6615.9130 2.0491985e+09 0.10138276 0.023279622 -27.598730 41.920177 6618.2406 1.9112502e+09 0.10074774 0.023952512 -27.687457 41.784477 6620.5683 1.7962644e+09 0.099869253 0.024950326 -27.767910 41.658024 6622.8959 1.6991688e+09 0.098219938 0.024519529 -27.845546 41.534720 6625.2236 1.6178844e+09 0.096423428 0.025664375 -27.929351 41.401617 6627.5512 1.5387676e+09 0.094110256 0.025529728 -28.018079 41.260697 6629.8788 1.4448845e+09 0.092595760 0.025950209 -28.106807 41.119776 6632.2065 1.3524224e+09 0.090545010 0.026057103 -28.195534 40.978855 6634.5341 1.2701700e+09 0.088745595 0.026365803 -28.276228 40.854002 6636.8617 1.2008659e+09 0.086804027 0.026215103 -28.353863 40.735267 6639.1894 1.1426607e+09 0.085360136 0.025560386 -28.434638 40.604672 6641.5170 1.0865636e+09 0.085423058 0.025150056 -28.518148 40.463750 6643.8447 1.0263068e+09 0.084134552 0.025320151 -28.604885 40.322829 6646.1723 9.6742225e+08 0.082896529 0.026009330 -28.693613 40.181908 6648.4999 9.0373585e+08 0.081867667 0.027298937 -28.778673 40.044655 6650.8276 8.4479670e+08 0.081591141 0.026444690 -28.862182 39.908954 6653.1552 7.9847211e+08 0.081425159 0.027604902 -28.937478 39.783006 6655.4828 7.5962482e+08 0.080093990 0.027809726 -29.010548 39.659703 6657.8105 7.2752576e+08 0.078522442 0.029841237 -29.089848 39.525883 6660.1381 6.9003584e+08 0.077184979 0.031751535 -29.173357 39.384962 6662.4657 6.5132113e+08 0.075872695 0.032782958 -29.253311 39.247596 6664.7934 6.1617407e+08 0.075162279 0.029303120 -29.331601 39.111894 6667.1210 5.8296302e+08 0.074928029 0.027147912 -29.405896 38.985677 6669.4487 5.5637506e+08 0.073946866 0.027894897 -29.478965 38.862374 6671.7763 5.2761834e+08 0.073946158 0.026876411 -29.555036 38.728936 6674.1039 5.0073207e+08 0.073121794 0.029042467 -29.633325 38.588015 6676.4316 4.7659221e+08 0.070735295 0.031991870 -29.715055 38.450535 6678.7592 4.5091860e+08 0.069810773 0.030428823 -29.798564 38.314832 6681.0868 4.2575462e+08 0.070756150 0.029723985 -29.878193 38.175251 6683.4145 4.0232224e+08 0.071244881 0.031796010 -29.956482 38.034330 6685.7421 3.8422441e+08 0.070701510 0.033488699 -30.026674 37.911763 6688.0698 3.7341362e+08 0.067995256 0.033801293 -30.095177 37.793027 6690.3974 3.5051624e+08 0.065985205 0.033070322 -30.166592 37.660146 6692.7250 3.2870946e+08 0.064891723 0.031923394 -30.239661 37.519225 6695.0527 3.1021415e+08 0.064110690 0.029849799 -30.316498 37.378304 6697.3803 2.9455858e+08 0.063329339 0.030139394 -30.394787 37.237383 6699.7079 2.8975664e+08 0.061629366 0.030937204 -30.468871 37.100668 6702.0356 2.7117186e+08 0.059830982 0.032905140 -30.541940 36.964967 6704.3632 2.5326020e+08 0.060257906 0.036355912 -30.619655 36.824622 6706.6909 2.3805578e+08 0.060030166 0.039648780 -30.697945 36.683701 6709.0185 2.2404911e+08 0.059334744 0.041120783 -30.762257 36.564381 6711.3461 2.1730357e+08 0.057242344 0.041086030 -30.826192 36.445643 6713.6738 2.0571736e+08 0.054805737 0.046123484 -30.897288 36.309515 6716.0014 1.9851840e+08 0.052664309 0.048403423 -30.970358 36.168596 6718.3290 1.8800552e+08 0.050090068 0.050324866 -31.043429 36.032205 6720.6567 1.7950739e+08 0.049368908 0.050343679 -31.116499 35.896502 6722.9843 1.7215937e+08 0.048276010 0.049388338 -31.189569 35.755832 6725.3119 1.6045075e+08 0.043610508 0.041381160 -31.262639 35.615099 6727.6396 1.5016447e+08 0.042045383 0.040108274 -31.335708 35.479399 6729.9672 1.4057336e+08 0.040528574 0.040400749 -31.408151 35.343071 6732.2949 1.3549355e+08 0.038562870 0.043794492 -31.476003 35.202149 6734.6225 1.3085042e+08 0.037890275 0.049316146 -31.544920 35.062293 6736.9501 1.2868490e+08 0.039526445 0.053947045 -31.617989 34.926593 6739.2778 1.2067293e+08 0.039808156 0.063166491 -31.689555 34.789388 6741.6054 1.1340868e+08 0.037704897 0.067485352 -31.757405 34.648467 6743.9330 1.0766127e+08 0.032514419 0.077341740 -31.822098 34.515803 6746.2607 1.0237792e+08 0.030009040 0.075956551 -31.881467 34.397066 6748.5883 1.0112100e+08 0.026968833 0.070112069 -31.942384 34.274280 6750.9160 95312895. 0.023829664 0.073568164 -32.010235 34.133359 6753.2436 89158899. 0.020567231 0.073765603 -32.078086 33.993830 6755.5712 84432630. 0.017948323 0.074354897 -32.145935 33.858128 6757.8989 78561309. 0.016095200 0.074012232 -32.213786 33.722426 6760.2265 74254573. 0.016055612 0.076493205 -32.281637 33.586724 6762.5541 71144228. 0.019563922 0.077156969 -32.349488 33.448754 6764.8818 67917924. 0.020785635 0.079525529 -32.417339 33.307835 6767.2094 67941678. 0.018092064 0.081741274 -32.485191 33.169622 6769.5371 66223747. 0.0068621871 0.085756850 -32.553042 33.033919 6771.8647 64001928. -0.035071706 0.091402393 -32.624039 32.884585 6774.1923 63061556. -0.0071337710 0.097047937 -32.697111 32.726263 6776.5200 60039377. 0.058101986 0.10269348 -32.765168 32.584654