# # 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 = 44.656742 km # Date (UTC) = 2016-01-13T09:33:08.519 # Date (julian) = 2457400.89801526 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.3576 1.2095007e+11 0.019313579 0.029677116 -21.446590 51.971617 6493.5522 1.0586953e+11 0.026057083 0.030338879 -21.584374 51.848595 6495.7467 9.0595650e+10 0.032476177 0.031000643 -21.713138 51.733628 6497.9413 7.3136102e+10 0.038314990 0.031662406 -21.833697 51.625986 6500.1358 6.0009568e+10 0.043584279 0.032324169 -21.953390 51.517477 6502.3304 5.6912280e+10 0.049816788 0.032985933 -22.069644 51.405528 6504.5249 5.5456293e+10 0.057080211 0.033647696 -22.185897 51.293580 6506.7195 5.2467856e+10 0.064876357 0.034309459 -22.316746 51.171901 6508.9141 4.8943017e+10 0.073424550 0.034971222 -22.449609 51.048878 6511.1086 4.3864508e+10 0.082208311 0.035632986 -22.564767 50.938876 6513.3032 3.9610753e+10 0.092076075 0.036294749 -22.676715 50.831234 6515.4977 3.7214504e+10 0.10401764 0.036956512 -22.790919 50.723592 6517.6923 3.5237778e+10 0.11738584 0.037618276 -22.907173 50.615950 6519.8869 3.3392201e+10 0.13191942 0.038280039 -23.021695 50.507437 6522.0814 3.1859237e+10 0.14737966 0.038938571 -23.129353 50.395473 6524.2760 2.9588763e+10 0.15707129 0.039525002 -23.237011 50.283509 6526.4705 2.7491217e+10 0.16583996 0.040161387 -23.348441 50.175346 6528.6651 2.5235643e+10 0.17328657 0.041970102 -23.460389 50.067704 6530.8597 2.2747032e+10 0.17812818 0.045032193 -23.569939 49.960062 6533.0542 2.0976270e+10 0.18176689 0.047542624 -23.677581 49.852419 6535.2488 1.9370706e+10 0.18156465 0.048116382 -23.788827 49.740020 6537.4433 1.7761498e+10 0.18027480 0.048894235 -23.911849 49.612076 6539.6379 1.6124482e+10 0.17888543 0.050415771 -24.031762 49.488236 6541.8324 1.4477246e+10 0.17632137 0.051056575 -24.139404 49.380594 6544.0270 1.3122300e+10 0.17376170 0.051666252 -24.247047 49.272952 6546.2216 1.2102799e+10 0.17150422 0.052646834 -24.350901 49.161523 6548.4161 1.1068659e+10 0.16984341 0.053791913 -24.454237 49.049576 6550.6107 1.0135799e+10 0.16807194 0.055138268 -24.557574 48.940027 6552.8052 9.3684383e+09 0.16640912 0.055384089 -24.660910 48.832385 6554.9998 8.7195427e+09 0.16438435 0.054853538 -24.764247 48.724743 6557.1944 8.0552746e+09 0.16185435 0.053744287 -24.867583 48.617101 6559.3889 7.4355264e+09 0.15898064 0.052343284 -24.970919 48.509459 6561.5835 6.9520781e+09 0.15590878 0.051085160 -25.070328 48.397890 6563.7780 6.6082978e+09 0.15247194 0.049028368 -25.169359 48.285943 6565.9726 6.3125635e+09 0.14928777 0.047214013 -25.268390 48.176534 6568.1671 5.9437572e+09 0.14693028 0.045618017 -25.367421 48.068892 6570.3617 5.5373417e+09 0.14450769 0.044767679 -25.466456 47.960095 6572.5563 5.1909231e+09 0.14160696 0.043911599 -25.565501 47.848130 6574.7508 4.8765414e+09 0.13816902 0.042494388 -25.664546 47.736165 6576.9454 4.5767253e+09 0.13439432 0.040283243 -25.772298 47.609102 6579.1399 4.2655673e+09 0.13025006 0.036993568 -25.880558 47.481159 6581.3345 3.9463108e+09 0.12716747 0.035495319 -25.980394 47.371747 6583.5291 3.6749670e+09 0.12478883 0.034753883 -26.079425 47.264105 6585.7236 3.4481776e+09 0.12267236 0.033392262 -26.175914 47.153921 6587.9182 3.2347606e+09 0.12114648 0.033361801 -26.270639 47.041972 6590.1127 3.0353127e+09 0.11905800 0.030852375 -26.364211 46.931176 6592.3073 2.8549510e+09 0.11658016 0.027775057 -26.454630 46.823534 6594.5018 2.6937571e+09 0.11412911 0.025897034 -26.545049 46.715892 6596.6964 2.5408186e+09 0.11139754 0.025724108 -26.639539 46.604181 6598.8910 2.3868246e+09 0.10939136 0.024981788 -26.734265 46.492233 6601.0855 2.2460949e+09 0.10922763 0.027085965 -26.826308 46.382967 6603.2801 2.1158297e+09 0.10796079 0.026497467 -26.916727 46.275325 6605.4746 2.0008957e+09 0.10708467 0.027063227 -27.007146 46.166390 6607.6692 1.8925687e+09 0.10501018 0.024385584 -27.097566 46.054442 6609.8638 1.7852331e+09 0.10176841 0.023962507 -27.187986 45.942493 6612.0583 1.6829172e+09 0.099075471 0.024277182 -27.278405 45.830546 6614.2529 1.5844360e+09 0.097782252 0.023766274 -27.368824 45.718599 6616.4474 1.4934994e+09 0.095964304 0.023352523 -27.456422 45.609472 6618.6420 1.4107148e+09 0.094913219 0.024255573 -27.542536 45.501830 6620.8365 1.3338656e+09 0.093711722 0.025036774 -27.628654 45.392750 6623.0311 1.2634597e+09 0.091803344 0.024503350 -27.714780 45.280784 6625.2257 1.1902500e+09 0.089932658 0.025666889 -27.800906 45.168819 6627.4202 1.1260746e+09 0.087501222 0.025479136 -27.887020 45.056872 6629.6148 1.0623137e+09 0.086065757 0.025997951 -27.973134 44.944925 6631.8093 1.0071535e+09 0.084273527 0.026012978 -28.059248 44.835940 6634.0039 9.6156864e+08 0.082917160 0.026327127 -28.145362 44.728298 6636.1985 9.0961461e+08 0.081749430 0.026472684 -28.234174 44.613236 6638.3930 8.5762070e+08 0.080999506 0.025654520 -28.327670 44.485294 6640.5876 7.9992752e+08 0.081568017 0.025198762 -28.418706 44.362683 6642.7821 7.5119120e+08 0.081605212 0.025183703 -28.504820 44.250734 6644.9767 7.0885602e+08 0.080846815 0.025449165 -28.590883 44.138836 6647.1712 6.7436715e+08 0.079791589 0.026527943 -28.672696 44.031190 6649.3658 6.4496946e+08 0.078825187 0.027129441 -28.754504 43.923548 6651.5604 6.1567233e+08 0.078495248 0.026913604 -28.836311 43.812942 6653.7549 5.9143277e+08 0.077939617 0.027911098 -28.918119 43.700996 6655.9495 5.6590273e+08 0.076245292 0.028002544 -28.998351 43.590623 6658.1440 5.4195202e+08 0.074785140 0.030316538 -29.075854 43.482981 6660.3386 5.1682438e+08 0.073352631 0.031933767 -29.153542 43.375153 6662.5332 4.9323762e+08 0.071975372 0.032745139 -29.235351 43.263204 6664.7277 4.7183137e+08 0.071086742 0.029543407 -29.317160 43.151255 6666.9223 4.5241147e+08 0.070744515 0.027088312 -29.395864 43.039307 6669.1168 4.3501025e+08 0.069464428 0.028235707 -29.473367 42.927360 6671.3114 4.1492965e+08 0.069487581 0.026869786 -29.555280 42.811002 6673.5059 3.9355972e+08 0.068857389 0.028215902 -29.643856 42.687980 6675.7005 3.7119969e+08 0.066798848 0.031140087 -29.728381 42.569006 6677.8951 3.5126018e+08 0.065558183 0.031085788 -29.805894 42.457041 6680.0896 3.2956326e+08 0.065896092 0.029460770 -29.883407 42.345076 6682.2842 3.1145239e+08 0.066819911 0.030641670 -29.960909 42.233129 6684.4787 2.9676479e+08 0.067097307 0.032678386 -30.038412 42.121183 6686.6733 2.8267619e+08 0.066026937 0.034152821 -30.112808 42.012341 6688.8679 2.7610385e+08 0.063254188 0.033985522 -30.186005 41.904698 6691.0624 2.6466013e+08 0.062327984 0.032986536 -30.260919 41.795339 6693.2570 2.5208912e+08 0.061547910 0.031515930 -30.338422 41.683392 6695.4515 2.3899526e+08 0.061174575 0.029776532 -30.416394 41.570222 6697.6461 2.2149175e+08 0.060594419 0.030173029 -30.500049 41.442278 6699.8407 2.0972078e+08 0.059130025 0.030814752 -30.583241 41.315233 6702.0352 1.9787422e+08 0.057427025 0.032904845 -30.656438 41.207591 6704.2298 1.8223710e+08 0.057858908 0.036290381 -30.729634 41.099949 6706.4243 1.7358336e+08 0.057731376 0.039184910 -30.799723 40.989200 6708.6189 1.6669597e+08 0.057204224 0.040717522 -30.868614 40.877253 6710.8134 1.6173240e+08 0.055579942 0.040655716 -30.939224 40.767025 6713.0080 1.5979499e+08 0.053509098 0.043715564 -31.012421 40.659382 6715.2026 1.5148479e+08 0.051436194 0.047585761 -31.086043 40.550181 6717.3971 1.4188253e+08 0.049304990 0.049849705 -31.164777 40.422237 6719.5917 1.3469958e+08 0.047535432 0.050807703 -31.243264 40.295007 6721.7862 1.2704420e+08 0.047709793 0.050540795 -31.316461 40.183060 6723.9808 1.1969490e+08 0.045719602 0.049915949 -31.389657 40.071113 6726.1754 1.1874996e+08 0.041866540 0.040952949 -31.466852 39.951169 6728.3699 1.1455731e+08 0.041296903 0.040152384 -31.545586 39.828147 6730.5645 1.1187769e+08 0.039862614 0.041152858 -31.617530 39.712764 6732.7590 1.0636923e+08 0.038626996 0.043879943 -31.686421 39.600815 6734.9536 97415568. 0.038640674 0.049296225 -31.755312 39.490448 6737.1481 92575597. 0.040445781 0.054607482 -31.824203 39.382806 6739.3427 84673357. 0.040976413 0.063245954 -31.893315 39.274253 6741.5373 80955080. 0.039446155 0.067290991 -31.967128 39.146311 6743.7318 79286069. 0.035140298 0.075984274 -32.040877 39.018580 6745.9264 77272477. 0.033711255 0.078956328 -32.109781 38.906607 6748.1209 74845662. 0.029696248 0.067653150 -32.178682 38.794642 6750.3155 72725579. 0.027023707 0.072542852 -32.250975 38.675041 6752.5101 68442288. 0.024139782 0.073544250 -32.324787 38.552019 6754.7046 64391638. 0.022344859 0.075080367 -32.392524 38.436289 6756.8992 60443157. 0.018997697 0.076480606 -32.457110 38.324342 6759.0937 55146462. 0.018620986 0.075842573 -32.524796 38.208674 6761.2883 53313071. 0.017130023 0.077992043 -32.598610 38.085652 6763.4828 51261094. 0.0046198566 0.077908280 -32.669621 37.965993 6765.6774 49904961. 0.021215326 0.079654856 -32.734205 37.854046 6767.8720 49653856. 0.050440402 0.080999394 -32.798789 37.742099