# # 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 = 52.153656 km # Date (UTC) = 2015-12-06T09:39:24.061 # Date (julian) = 2457362.90236181 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.0148 5.7807632e+10 0.051571264 0.032890765 111.77964 26.037506 6504.5597 5.2846447e+10 0.062081287 0.033658177 111.83809 25.910887 6507.1046 4.8476184e+10 0.072965445 0.034425590 111.89579 25.791055 6509.6495 4.4917696e+10 0.084388349 0.035193002 111.95168 25.669416 6512.1945 4.1832524e+10 0.096371956 0.035960414 112.00494 25.545147 6514.7394 3.8825787e+10 0.10881670 0.036727827 112.05922 25.418487 6517.2843 3.5459506e+10 0.12149256 0.037495239 112.11914 25.278680 6519.8292 3.2127819e+10 0.13450383 0.038262652 112.17805 25.141889 6522.3741 2.9016102e+10 0.14688845 0.039015217 112.23131 25.022041 6524.9190 2.6428292e+10 0.15437667 0.039753450 112.28458 24.902193 6527.4639 2.4290686e+10 0.15985426 0.041053299 112.33784 24.778374 6530.0089 2.2328479e+10 0.16519073 0.043841099 112.39110 24.654104 6532.5538 2.0510543e+10 0.16899257 0.047146812 112.44436 24.529834 6535.0987 1.8843442e+10 0.17146324 0.048181485 112.49762 24.405564 6537.6436 1.7238246e+10 0.17275672 0.048988657 112.55348 24.277161 6540.1885 1.5643021e+10 0.17397126 0.050943163 112.61340 24.142347 6542.7334 1.4154522e+10 0.17293010 0.051280691 112.67073 24.011631 6545.2783 1.2846867e+10 0.17162606 0.052458061 112.72399 23.887345 6547.8233 1.1773514e+10 0.16935677 0.053600437 112.77726 23.763666 6550.3682 1.0853662e+10 0.16679999 0.055077549 112.83052 23.643834 6552.9131 1.0008622e+10 0.16420246 0.055356941 112.88378 23.524002 6555.4580 9.2610344e+09 0.16141137 0.054468526 112.93312 23.400250 6558.0029 8.5920554e+09 0.15874836 0.053236812 112.98194 23.275980 6560.5478 7.9544045e+09 0.15547037 0.051780360 113.03775 23.145067 6563.0928 7.3344930e+09 0.15247556 0.049821070 113.09767 23.010254 6565.6377 6.7453677e+09 0.14968396 0.047594314 113.15062 22.884838 6568.1826 6.2454137e+09 0.14771637 0.045603822 113.19945 22.765007 6570.7275 5.8186865e+09 0.14583586 0.044616154 113.24993 22.643509 6573.2724 5.4317518e+09 0.14373047 0.043438874 113.30319 22.519222 6575.8173 5.0767656e+09 0.14111244 0.041554668 113.35592 22.395475 6578.3622 4.7582488e+09 0.13823606 0.038077585 113.40474 22.275643 6580.9072 4.4681827e+09 0.13511666 0.035682405 113.45356 22.155811 6583.4521 4.1720090e+09 0.13268495 0.034792846 113.50768 22.022975 6585.9970 3.8711735e+09 0.12993287 0.033173701 113.56260 21.888163 6588.5419 3.5833540e+09 0.12777150 0.033198959 113.61224 21.766312 6591.0868 3.3342653e+09 0.12447486 0.029103941 113.66106 21.646480 6593.6317 3.1323199e+09 0.12125505 0.026514897 113.70989 21.523921 6596.1767 2.9631245e+09 0.11721355 0.025726471 113.75872 21.399634 6598.7216 2.7938849e+09 0.11403739 0.025062664 113.80973 21.271566 6601.2665 2.6186332e+09 0.11272382 0.027171188 113.86466 21.136752 6603.8114 2.4462858e+09 0.11038891 0.026182929 113.91741 21.007280 6606.3563 2.2868024e+09 0.10930459 0.026863681 113.96623 20.887449 6608.9012 2.1517093e+09 0.10611095 0.023708543 114.01505 20.767618 6611.4461 2.0432755e+09 0.10326279 0.024673949 114.06387 20.647785 6613.9911 1.9339826e+09 0.10237678 0.023937212 114.11269 20.527953 6616.5360 1.8174619e+09 0.10112966 0.023366420 114.16670 20.395384 6619.0809 1.6993302e+09 0.10070335 0.024545431 114.22162 20.260571 6621.6258 1.5778095e+09 0.10010183 0.024882021 114.27138 20.138440 6624.1707 1.4857669e+09 0.098324770 0.024953695 114.32020 20.018591 6626.7156 1.4076032e+09 0.096682760 0.025679120 114.36639 19.898753 6629.2605 1.3437026e+09 0.095279106 0.026061997 114.41077 19.778922 6631.8055 1.2779374e+09 0.093387083 0.026012584 114.45875 19.653976 6634.3504 1.2035649e+09 0.091827880 0.026352401 114.51368 19.519163 6636.8953 1.1311207e+09 0.090234605 0.026202073 114.56653 19.389423 6639.4402 1.0637143e+09 0.089423161 0.025470734 114.61536 19.269590 6641.9851 1.0064409e+09 0.089761987 0.025151646 114.66380 19.149758 6644.5300 9.6006298e+08 0.088456088 0.025400892 114.70818 19.029926 6647.0750 9.2184074e+08 0.086899416 0.026477244 114.75256 18.910094 6649.6199 8.7533616e+08 0.085590947 0.026779228 114.80157 18.777777 6652.1648 8.2927823e+08 0.084812940 0.027295860 114.85150 18.642945 6654.7097 7.8191714e+08 0.083535012 0.027733887 114.90051 18.520560 6657.2546 7.4224430e+08 0.081086807 0.029196456 114.94933 18.400728 6659.7995 7.0731592e+08 0.079150733 0.031667816 114.99879 18.275136 6662.3444 6.6781939e+08 0.077386508 0.032851017 115.04872 18.145316 6664.8894 6.2765286e+08 0.076567577 0.028951957 115.09547 18.021228 6667.4343 5.9426061e+08 0.076233875 0.027262974 115.13985 17.901396 6669.9792 5.6764531e+08 0.075646441 0.027350006 115.18762 17.776758 6672.5241 5.3909172e+08 0.075502121 0.027183380 115.24254 17.641945 6675.0690 5.1091260e+08 0.074085225 0.029930556 115.29411 17.513302 6677.6139 4.8841190e+08 0.072139068 0.031485444 115.33850 17.397894 6680.1589 4.6973246e+08 0.072380301 0.029475719 115.38325 17.281222 6682.7038 4.5088898e+08 0.073241227 0.030962247 115.43318 17.146409 6685.2487 4.2834822e+08 0.073141894 0.032967506 115.48312 17.011596 6687.7936 4.0401630e+08 0.070870745 0.033900304 115.53305 16.876782 6690.3385 3.8095603e+08 0.068716547 0.033077070 115.58265 16.743125 6692.8834 3.6383631e+08 0.067686612 0.031739459 115.62703 16.627731 6695.4283 3.4557678e+08 0.067076535 0.029780793 115.67141 16.512338 6697.9733 3.2844759e+08 0.066288950 0.030214433 115.72026 16.381284 6700.5182 3.1440707e+08 0.064273082 0.031052061 115.77019 16.246471 6703.0631 2.9788227e+08 0.063571114 0.033833098 115.82012 16.115671 6705.6080 2.8316340e+08 0.063658238 0.037749510 115.87005 15.985851 6708.1529 2.6923119e+08 0.063254769 0.040210099 115.91199 15.864030 6710.6978 2.5905143e+08 0.061544532 0.040633087 115.95193 15.744197 6713.2427 2.4992771e+08 0.059091640 0.044564589 115.99735 15.618884 6715.7877 2.3891434e+08 0.056835914 0.048184187 116.04729 15.489045 6718.3326 2.2423898e+08 0.054402491 0.050330378 116.09722 15.356494 6720.8775 2.1286686e+08 0.054142549 0.050318093 116.14715 15.221681 6723.4224 2.0426058e+08 0.052915238 0.049604528 116.19407 15.097402 6725.9673 1.9829362e+08 0.048670213 0.040971779 116.23846 14.982009 6728.5122 1.9419817e+08 0.047947635 0.040354108 116.28300 14.862442 6731.0572 1.8715796e+08 0.046181573 0.041863770 116.32794 14.732622 6733.6021 1.8082021e+08 0.044837638 0.047193110 116.37431 14.602802 6736.1470 1.7083767e+08 0.046453407 0.050910684 116.42424 14.472982 6738.6919 1.5806837e+08 0.047811749 0.061130309 116.47275 14.341744 6741.2368 1.4600655e+08 0.046626508 0.066434096 116.51769 14.206931 6743.7817 1.3545581e+08 0.041755148 0.076320958 116.56403 14.073521 6746.3266 1.2604569e+08 0.038954073 0.075189682 116.61396 13.943702 6748.8716 1.1684997e+08 0.036304633 0.071602199 116.66251 13.813877 6751.4165 1.1073548e+08 0.032452023 0.073887758 116.70745 13.684037 6753.9614 1.0420985e+08 0.030093596 0.076088519 116.75377 13.554203 6756.5063 1.0280643e+08 0.027007678 0.075469704 116.80370 13.424383 6759.0512 1.0000391e+08 0.027341164 0.075832314 116.85226 13.294563 6761.5961 95114458. 0.029674479 0.078017477 116.89720 13.164742 6764.1410 89842232. 0.034081046 0.079490043 116.94214 13.033573 6766.6860 83275155. 0.034989283 0.081265411 116.98708 12.898760 6769.2309 80736215. 0.029663432 0.085014245 117.03335 12.765282 6771.7758 79518118. 0.024937838 0.091186783 117.08328 12.635462 6774.3207 77152875. 0.020247601 0.097359321 117.13190 12.505643 6776.8656 74221795. 0.015585375 0.10353186 117.17683 12.375823 6779.4105 70117964. 0.010936950 0.10970440 117.22177 12.246003 6781.9555 67960527. 0.0063049995 0.11587694 117.26671 12.116182 6784.5004 65347743. 0.0016596110 0.12204947 117.31331 11.981556 6787.0453 63775172. -0.0029951816 0.12822201 117.36467 11.833187 6789.5902 62943528. -0.0076686905 0.13439455 117.41277 11.696747 6792.1351 58666328. -0.012502856 0.14056709 117.45771 11.571921 6794.6800 56179197. -0.017441646 0.14673963 117.50517 11.444578 6797.2249 51485663. -0.022796086 0.15291216 117.55510 11.314758 6799.7699 51828643. -0.029095242 0.15908470 117.60574 11.175641 6802.3148 51525510. -0.044213473 0.16525724 117.65710 11.027273 6804.8597 49633950. -0.039857437 0.17142978 117.70365 10.892792 6807.4046 45689706. -0.023760370 0.17760232 117.74859 10.762971