# # 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 = 41.810618 km # Date (UTC) = 2017-01-25T10:02:32.346 # Date (julian) = 2457778.91842993 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.5724 4.7613493e+10 0.085045422 0.034566643 101.77886 46.769592 6509.6505 4.3977724e+10 0.095447580 0.035193297 101.88757 46.617396 6511.7286 4.0404195e+10 0.10603886 0.035819950 101.99630 46.465175 6513.8068 3.6861681e+10 0.11677572 0.036446603 102.10574 46.311541 6515.8849 3.3338910e+10 0.12763143 0.037073256 102.22970 46.128865 6517.9630 2.9914186e+10 0.13860593 0.037699909 102.34305 45.959035 6520.0411 2.6608180e+10 0.14968314 0.038326562 102.44635 45.801373 6522.1193 2.4013139e+10 0.16075467 0.038948482 102.54964 45.647377 6524.1974 2.1864142e+10 0.16650954 0.039497085 102.65293 45.495153 6526.2755 2.0010425e+10 0.17117678 0.039956935 102.75621 45.342952 6528.3536 1.8338302e+10 0.17593815 0.041723029 102.85949 45.190756 6530.4318 1.6771954e+10 0.17957774 0.044433164 102.95737 45.038532 6532.5099 1.5337016e+10 0.18258968 0.047110154 103.05608 44.886308 6534.5880 1.4051111e+10 0.18358971 0.048109049 103.15937 44.734084 6536.6661 1.2881312e+10 0.18318440 0.048386517 103.26095 44.580141 6538.7443 1.1802672e+10 0.18259308 0.049519101 103.35881 44.422479 6540.8224 1.0741783e+10 0.18103573 0.051242623 103.45667 44.267410 6542.9005 9.8031505e+09 0.17822183 0.051344125 103.55452 44.115186 6544.9786 9.0492685e+09 0.17533972 0.052438243 103.64050 43.976826 6547.0568 8.4666511e+09 0.17182748 0.053308953 103.71972 43.846350 6549.1349 8.0005348e+09 0.16838599 0.054103750 103.80810 43.705186 6551.2130 7.5001074e+09 0.16606901 0.055310525 103.90596 43.552962 6553.2911 6.9884131e+09 0.16389306 0.055188712 104.00026 43.397213 6555.3693 6.4955437e+09 0.16136142 0.054543088 104.09266 43.239582 6557.4474 6.0297920e+09 0.15871369 0.053585677 104.18508 43.086343 6559.5255 5.6050071e+09 0.15558165 0.052327865 104.27750 42.934119 6561.6036 5.2135273e+09 0.15227666 0.051075217 104.36992 42.781896 6563.6818 4.8337864e+09 0.14899220 0.049139713 104.46161 42.629671 6565.7599 4.4835736e+09 0.14619853 0.047455523 104.54860 42.477445 6567.8380 4.1677796e+09 0.14400150 0.045908617 104.63330 42.330247 6569.9161 3.9186140e+09 0.14168880 0.044912052 104.71252 42.195114 6571.9943 3.7067202e+09 0.13904576 0.044231719 104.79289 42.057449 6574.0724 3.5198848e+09 0.13564111 0.042820232 104.87987 41.905223 6576.1505 3.3092931e+09 0.13264595 0.041198137 104.96686 41.752997 6578.2287 3.0868589e+09 0.12950131 0.038288550 105.05384 41.600773 6580.3068 2.8952725e+09 0.12621152 0.036237248 105.13499 41.458768 6582.3849 2.7300514e+09 0.12303278 0.035189053 105.20954 41.328317 6584.4630 2.6053714e+09 0.11967078 0.034263283 105.28634 41.190832 6586.5412 2.4856472e+09 0.11636651 0.033164301 105.36789 41.038605 6588.6193 2.3514430e+09 0.11332861 0.033173121 105.45207 40.883750 6590.6974 2.2036887e+09 0.10999994 0.029764790 105.53905 40.726088 6592.7755 2.0687021e+09 0.10721784 0.027320253 105.61503 40.585942 6594.8537 1.9575295e+09 0.10462219 0.025703909 105.68493 40.455468 6596.9318 1.8576623e+09 0.10210953 0.025723037 105.76063 40.314158 6599.0099 1.7637098e+09 0.10027887 0.024930326 105.84218 40.161933 6601.0880 1.6573610e+09 0.10043071 0.027087146 105.92731 40.009709 6603.1662 1.5465719e+09 0.099577540 0.026564911 106.01429 39.857485 6605.2443 1.4567496e+09 0.099008802 0.026869974 106.08346 39.723083 6607.3224 1.3807128e+09 0.097574339 0.025070368 106.14869 39.592607 6609.4005 1.3104293e+09 0.094679039 0.023824908 106.22492 39.443824 6611.4787 1.2387597e+09 0.092131689 0.024653216 106.30647 39.286162 6613.5568 1.1683670e+09 0.091242290 0.023777874 106.37830 39.151176 6615.6349 1.1071025e+09 0.089858137 0.023271066 106.44820 39.020702 6617.7130 1.0559873e+09 0.088970813 0.023675652 106.52236 38.875284 6619.7912 9.9993921e+08 0.088284566 0.024716807 106.59846 38.723090 6621.8693 9.3587572e+08 0.087194097 0.024801320 106.67457 38.570869 6623.9474 8.7053072e+08 0.085415681 0.024842825 106.75057 38.418868 6626.0255 8.1395772e+08 0.084391959 0.026558374 106.81582 38.288362 6628.1037 7.6541199e+08 0.082713635 0.025745181 106.88106 38.157888 6630.1818 7.2166915e+08 0.081298486 0.025928750 106.95568 38.008646 6632.2599 6.7640145e+08 0.079653543 0.026063510 107.03153 37.856934 6634.3380 6.3894358e+08 0.078133091 0.026351500 107.09677 37.726460 6636.4162 6.0839834e+08 0.076606650 0.026388141 107.16201 37.595986 6638.4943 5.8159386e+08 0.075628149 0.025650108 107.23679 37.446425 6640.5724 5.5717716e+08 0.076076731 0.025200617 107.31231 37.295028 6642.6505 5.2623340e+08 0.076203769 0.025178317 107.37289 37.164553 6644.7287 4.9998669e+08 0.075524451 0.025422358 107.43347 37.034078 6646.8068 4.7666637e+08 0.074656171 0.026337765 107.50790 36.884201 6648.8849 4.5108014e+08 0.073726852 0.027556646 107.58320 36.733124 6650.9630 4.2716938e+08 0.073562033 0.026475703 107.64377 36.602648 6653.0412 4.0739021e+08 0.073344990 0.027546677 107.70435 36.472172 6655.1193 3.8237879e+08 0.072255216 0.027659506 107.77408 36.317047 6657.1974 3.6171888e+08 0.070540702 0.029130102 107.84407 36.161217 6659.2755 3.3818886e+08 0.069154742 0.031777121 107.90464 36.030765 6661.3537 3.1980496e+08 0.067859925 0.032715077 107.96521 35.900314 6663.4318 3.0427325e+08 0.066613731 0.032363554 108.03509 35.749810 6665.5099 2.8260886e+08 0.066294290 0.027711621 108.10494 35.599359 6667.5880 2.6882691e+08 0.065615052 0.027319454 108.16552 35.468885 6669.6662 2.5337566e+08 0.064657852 0.027671507 108.22610 35.338412 6671.7443 2.4451082e+08 0.064327454 0.026875955 108.28668 35.212296 6673.8224 2.3358491e+08 0.063416442 0.028689198 108.34725 35.086482 6675.9005 2.2086828e+08 0.061040765 0.031523220 108.41151 34.939814 6677.9787 2.1000460e+08 0.059725293 0.030966944 108.47675 34.787588 6680.0568 1.9785997e+08 0.059567602 0.029453680 108.53756 34.656030 6682.1349 1.8604756e+08 0.059900073 0.030527623 108.59814 34.525556 6684.2130 1.7746454e+08 0.059753480 0.032664903 108.66246 34.377593 6686.2912 1.7065750e+08 0.058741469 0.033930489 108.72770 34.225369 6688.3693 1.6224899e+08 0.056041432 0.033870435 108.78395 34.094125 6690.4474 1.5708282e+08 0.054447735 0.033064589 108.83986 33.963649 6692.5255 1.4650974e+08 0.053265497 0.032155049 108.90341 33.815367 6694.6037 1.3821099e+08 0.052329168 0.030414956 108.96865 33.663143 6696.6818 1.2855932e+08 0.051670387 0.029959056 109.02476 33.532220 6698.7599 1.1848146e+08 0.050176925 0.031260891 109.08068 33.401746 6700.8380 1.1303383e+08 0.048337164 0.031289318 109.14436 33.253145 6702.9162 1.0725754e+08 0.047761721 0.033608295 109.20960 33.100920 6704.9943 1.0158636e+08 0.047819308 0.036665804 109.26557 32.970336 6707.0724 99246873. 0.047601007 0.040176452 109.32148 32.839885 6709.1505 94124832. 0.046937287 0.041036790 109.38069 32.695586 6711.2287 89882326. 0.045257946 0.040952395 109.44046 32.548951 6713.3068 89080843. 0.043689051 0.044796234 109.49638 32.418456 6715.3849 82707456. 0.041713411 0.047772273 109.55229 32.287982 6717.4630 80070636. 0.039964171 0.049845627 109.60821 32.157508 6719.5412 78315446. 0.038603269 0.050855688 109.66413 32.027033 6721.6193 74854625. 0.038973817 0.050490496 109.72283 31.880981 6723.6974 72752173. 0.037554354 0.049757908 109.78263 31.728757 6725.7755 68569201. 0.033520692 0.041091573 109.83494 31.599688 6727.8537 64629881. 0.032450311 0.039823051 109.88620 31.473874 6729.9318 65007381. 0.031566489 0.040424361 109.94370 31.328760 6732.0099 68422132. 0.030464592 0.043742036 110.00351 31.176535 6734.0880 63892372. 0.028718499 0.049348302 110.05569 31.043697 6736.1662 59237176. 0.028966163 0.050983232 110.10695 30.913221 6738.2443 50602460. 0.026531863 0.058666064 110.16458 30.766535 6740.3224 48566771. 0.022616679 0.064601167 110.22438 30.614311 6742.4005 49348434. 0.015298264 0.069586763 110.27644 30.486014 6744.4787 45841097. -0.0025322282 0.078163654 110.32769 30.360199 6746.5568 47730867. -0.069905185 0.072513865 110.38544 30.214313 6748.6349 44357077. -0.023752494 0.070357259 110.44525 30.062088 6750.7130 46921639. 0.095099016 0.073221692 110.50504 29.914896