# # 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 = 47.441614 km # Date (UTC) = 2017-01-28T10:45:17.026 # Date (julian) = 2457781.94811372 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.9943 8.0987839e+10 0.060234796 0.033186142 89.306266 50.551938 6505.5336 6.7442831e+10 0.070957269 0.033951840 89.485285 50.324397 6508.0728 5.8317413e+10 0.082157111 0.034717537 89.652220 50.106266 6510.6120 5.1183297e+10 0.093797029 0.035483235 89.798364 49.920267 6513.1512 4.5368817e+10 0.10592702 0.036248932 89.967382 49.705152 6515.6905 4.0278946e+10 0.11849087 0.037014630 90.138527 49.481967 6518.2297 3.5236977e+10 0.13126635 0.037780327 90.308122 49.258757 6520.7689 3.0997052e+10 0.14453904 0.038546025 90.482653 49.036291 6523.3082 2.7504150e+10 0.15466665 0.039255488 90.615509 48.850288 6525.8474 2.4700660e+10 0.16074940 0.039685505 90.766123 48.641067 6528.3866 2.2045172e+10 0.16691415 0.041749183 90.931428 48.411999 6530.9258 1.9587304e+10 0.17096955 0.045124856 91.090754 48.188988 6533.4651 1.7501628e+10 0.17531219 0.047717227 91.230259 48.002989 6536.0043 1.5742371e+10 0.17601508 0.047794345 91.375724 47.794422 6538.5435 1.4422570e+10 0.17825169 0.049421348 91.522593 47.574367 6541.0828 1.3096896e+10 0.17802156 0.051299693 91.655455 47.388366 6543.6220 1.1873102e+10 0.17639202 0.051545135 91.802078 47.174832 6546.1612 1.0814414e+10 0.17293661 0.052597174 91.941281 46.966464 6548.7004 9.7704634e+09 0.16914779 0.053876820 92.067497 46.773820 6551.2397 8.8728061e+09 0.16504324 0.055319876 92.218462 46.551217 6553.7789 8.1267490e+09 0.16125099 0.054943529 92.351582 46.355037 6556.3181 7.3846967e+09 0.15808457 0.053966356 92.481577 46.159120 6558.8573 6.7301648e+09 0.15482765 0.052508740 92.625069 45.927937 6561.3966 6.1275167e+09 0.15133242 0.051177258 92.745463 45.740386 6563.9358 5.6312596e+09 0.14764499 0.048845859 92.865035 45.554386 6566.4750 5.2280025e+09 0.14475839 0.046914161 92.984608 45.368385 6569.0143 4.8210729e+09 0.14206140 0.044853352 93.126989 45.139292 6571.5535 4.4306307e+09 0.14003665 0.044352107 93.249070 44.939763 6574.0927 4.0453790e+09 0.13708103 0.042810475 93.363292 44.753763 6576.6319 3.7350192e+09 0.13415556 0.040644015 93.482865 44.567760 6579.1712 3.4711845e+09 0.13036766 0.036976398 93.597859 44.377179 6581.7104 3.2052809e+09 0.12725817 0.035381491 93.713482 44.178910 6584.2496 2.9565493e+09 0.12411256 0.034379531 93.841028 43.955698 6586.7889 2.7151655e+09 0.12118956 0.033161099 93.954963 43.767115 6589.3281 2.4999341e+09 0.11812384 0.032395094 94.067880 43.578319 6591.8673 2.3273807e+09 0.11430277 0.028223253 94.180813 43.385675 6594.4065 2.1610108e+09 0.11049192 0.025949354 94.287638 43.199134 6596.9458 2.0167791e+09 0.10631361 0.025722974 94.393923 43.010388 6599.4850 1.8877607e+09 0.10329135 0.024958900 94.500212 42.817743 6602.0242 1.7741995e+09 0.10145418 0.027495964 94.606496 42.631131 6604.5634 1.6589332e+09 0.098911460 0.026405834 94.718131 42.430154 6607.1027 1.5394348e+09 0.097068857 0.025504247 94.835738 42.211477 6609.6419 1.4230517e+09 0.093584195 0.023896607 94.942005 42.018871 6612.1811 1.3205484e+09 0.091304219 0.024185416 95.044015 41.830507 6614.7204 1.2359114e+09 0.090527470 0.023444192 95.144565 41.644505 6617.2596 1.1548975e+09 0.089451543 0.023525315 95.250854 41.458505 6619.7988 1.0777183e+09 0.089144018 0.024718655 95.352945 41.268308 6622.3380 1.0023816e+09 0.088112560 0.024668016 95.451750 41.076503 6624.8773 9.4086310e+08 0.086660546 0.025331909 95.544751 40.890502 6627.4165 8.8206096e+08 0.084793232 0.025477698 95.641876 40.704502 6629.9557 8.3186651e+08 0.083628421 0.025936306 95.741518 40.517739 6632.4950 7.7994858e+08 0.081910760 0.026091694 95.841137 40.325133 6635.0342 7.2435969e+08 0.080543430 0.026404914 95.936719 40.136556 6637.5734 6.7374237e+08 0.079149178 0.025880572 96.029720 39.950556 6640.1126 6.2709291e+08 0.079064851 0.025256870 96.122726 39.764552 6642.6519 5.9221394e+08 0.078984236 0.025178372 96.207766 39.591063 6645.1911 5.6274521e+08 0.077801699 0.025541205 96.287478 39.425947 6647.7303 5.3349623e+08 0.076467793 0.026822298 96.378390 39.243226 6650.2696 5.0171666e+08 0.075548313 0.026316945 96.471390 39.057224 6652.8088 4.7069652e+08 0.074974553 0.027473049 96.564390 38.871224 6655.3480 4.4330517e+08 0.073394014 0.027754013 96.651861 38.685225 6657.8872 4.2091760e+08 0.071353815 0.029930275 96.740381 38.497066 6660.4265 3.9982759e+08 0.069567865 0.032013631 96.833363 38.304460 6662.9657 3.7317657e+08 0.068212356 0.032502462 96.920909 38.117277 6665.5049 3.4771646e+08 0.067853100 0.027719804 97.007268 37.931276 6668.0441 3.2412402e+08 0.067528747 0.027509841 97.093624 37.745273 6670.5834 3.0421025e+08 0.067376439 0.027058365 97.185364 37.559273 6673.1226 2.8765058e+08 0.067322108 0.027642578 97.274312 37.371247 6675.6618 2.6989049e+08 0.065501752 0.031066004 97.354029 37.178602 6678.2011 2.5452565e+08 0.064424314 0.030802138 97.429188 37.012522 6680.7403 2.3829842e+08 0.065330015 0.029601275 97.503738 36.851949 6683.2795 2.2225513e+08 0.066348656 0.031598211 97.590077 36.665986 6685.8187 2.0648209e+08 0.066230208 0.033569630 97.676428 36.480001 6688.3580 1.9342212e+08 0.063643251 0.033867822 97.762574 36.293997 6690.8972 1.8368231e+08 0.062157183 0.033013044 97.842286 36.107997 6693.4364 1.7841573e+08 0.061236753 0.031454368 97.922000 35.921997 6695.9757 1.7227190e+08 0.060955839 0.029680258 98.001716 35.735855 6698.5149 1.6254149e+08 0.059959167 0.030924550 98.081433 35.543210 6701.0541 1.5264946e+08 0.057968033 0.031488839 98.158207 35.367712 6703.5933 1.4286702e+08 0.057817895 0.035159952 98.232224 35.208286 6706.1326 1.3872102e+08 0.057739677 0.038677123 98.310572 35.028668 6708.6718 1.3437030e+08 0.057050041 0.040775137 98.388594 34.842677 6711.2110 1.2631176e+08 0.054970354 0.040932316 98.461652 34.656713 6713.7502 1.0985372e+08 0.052306210 0.046400111 98.539692 34.470722 6716.2895 98332870. 0.049885614 0.048827732 98.619405 34.284721 6718.8287 91932244. 0.046815867 0.051103058 98.699121 34.098719 6721.3679 92176703. 0.046747336 0.050414759 98.773934 33.912718 6723.9072 98549723. 0.044679924 0.049874882 98.845900 33.732903 6726.4464 92979574. 0.040154945 0.040955393 98.914222 33.573479 6728.9856 90111330. 0.039203176 0.041025040 98.984807 33.401393 6731.5248 90591181. 0.036836606 0.042794561 99.057879 33.215391 6734.0641 93849671. 0.035437471 0.049349745 99.130952 33.029389 6736.6033 95801900. 0.037302593 0.052635815 99.204018 32.843406 6739.1425 93266888. 0.037820832 0.063000978 99.277075 32.657443 6741.6818 86728239. 0.035203768 0.067703097 99.350147 32.471442 6744.2210 84108857. 0.029483550 0.077964337 99.423219 32.285441 6746.7602 82688730. 0.024672480 0.070148976 99.496291 32.099441 6749.2994 78382456. 0.021621205 0.072195947 99.559452 31.938667 6751.8387 73464012. 0.014987850 0.074066264 99.624098 31.774115 6754.3779 60692568. 0.0054451086 0.075605769 99.697170 31.588115 6756.9171 51315025. -0.039438568 0.076526800 99.770243 31.406681 6759.4564 42629072. -0.014137796 0.075930079 99.842105 31.226112 6761.9956 42687692. 0.076706180 0.078050479 99.908533 31.040110