# # 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 = 45.507194 km # Date (UTC) = 2015-01-15T20:42:18.457 # Date (julian) = 2457038.36271362 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.1986 5.9472110e+10 0.065967184 0.033850828 170.89466 52.146713 6507.1328 5.6076998e+10 0.074329705 0.034434093 170.79219 52.048044 6509.0671 5.3139071e+10 0.083038020 0.035017358 170.68973 51.949374 6511.0013 5.0081971e+10 0.092027320 0.035600623 170.57009 51.841872 6512.9355 4.6704899e+10 0.10123781 0.036183888 170.44865 51.733443 6514.8698 4.2918079e+10 0.11055679 0.036767153 170.32981 51.622415 6516.8040 3.9072557e+10 0.12001420 0.037350418 170.21271 51.509649 6518.7383 3.5317003e+10 0.12962899 0.037933683 170.10103 51.402138 6520.6725 3.2054967e+10 0.13956929 0.038516948 170.00235 51.307264 6522.6067 2.9289842e+10 0.14819527 0.039076134 169.90368 51.212391 6524.5410 2.6706961e+10 0.15353125 0.039619147 169.79573 51.105732 6526.4752 2.4261901e+10 0.15734589 0.040166303 169.68297 50.992965 6528.4095 2.2115428e+10 0.16129015 0.041767312 169.57518 50.886513 6530.3437 2.0457552e+10 0.16513091 0.044309876 169.47651 50.791640 6532.2779 1.9144798e+10 0.16857426 0.046916384 169.37784 50.696766 6534.2122 1.7924462e+10 0.17011124 0.048003913 169.26905 50.589048 6536.1464 1.6647277e+10 0.17031030 0.047921511 169.15628 50.476283 6538.0807 1.5443888e+10 0.17214077 0.049195960 169.05089 50.370892 6540.0149 1.4469814e+10 0.17296107 0.050861143 168.95601 50.276018 6541.9491 1.3688920e+10 0.17135582 0.051018730 168.86114 50.181145 6543.8834 1.2948579e+10 0.16965213 0.051613741 168.75573 50.072367 6545.8176 1.2152766e+10 0.16791449 0.052462892 168.64730 49.959601 6547.7519 1.1357294e+10 0.16700633 0.053573285 168.54705 49.853475 6549.6861 1.0690042e+10 0.16574765 0.054665475 168.45596 49.754791 6551.6203 1.0131694e+10 0.16436776 0.055453502 168.36487 49.656107 6553.5546 9.5672046e+09 0.16289987 0.055056285 168.26290 49.549268 6555.4888 8.9769078e+09 0.16151743 0.054442635 168.15881 49.440838 6557.4231 8.3817920e+09 0.16017250 0.053600929 168.06162 49.337593 6559.3573 7.8993280e+09 0.15817669 0.052346852 167.97054 49.238926 6561.2915 7.5023768e+09 0.15599309 0.051229014 167.87946 49.140258 6563.2258 7.1029778e+09 0.15419003 0.049667186 167.77673 49.028956 6565.1600 6.6872521e+09 0.15261517 0.048136686 167.67264 48.916188 6567.0943 6.2711285e+09 0.15111237 0.046537484 167.57847 48.813985 6569.0285 5.9199146e+09 0.14941736 0.044854280 167.49118 48.719112 6570.9627 5.6305117e+09 0.14822250 0.044518707 167.40389 48.624238 6572.8970 5.3859467e+09 0.14669236 0.043716475 167.31661 48.525740 6574.8312 5.1508980e+09 0.14463330 0.042455770 167.22933 48.427072 6576.7655 4.9227039e+09 0.14218473 0.040490326 167.13805 48.323890 6578.6997 4.6716727e+09 0.13933094 0.037544697 167.03830 48.211122 6580.6339 4.4087284e+09 0.13679323 0.035934896 166.93879 48.098560 6582.5682 4.1671197e+09 0.13453608 0.035139175 166.85530 47.999892 6584.5024 3.9679733e+09 0.13221015 0.034241821 166.77181 47.901224 6586.4367 3.8054927e+09 0.13012547 0.033165651 166.68379 47.797206 6588.3709 3.6237578e+09 0.12876194 0.033256066 166.58837 47.684440 6590.3051 3.4290906e+09 0.12705233 0.030494448 166.49383 47.572996 6592.2394 3.2304254e+09 0.12516307 0.027841010 166.41035 47.478122 6594.1736 3.0595872e+09 0.12319771 0.026077212 166.32686 47.383249 6596.1079 2.9262194e+09 0.12073159 0.025726783 166.24337 47.286710 6598.0421 2.8148712e+09 0.11900374 0.025387062 166.15988 47.188040 6599.9763 2.7104801e+09 0.11816930 0.024988452 166.07639 47.089371 6601.9106 2.5910551e+09 0.11752613 0.027474525 165.98680 46.979372 6603.8448 2.4560416e+09 0.11608259 0.026163139 165.89572 46.866607 6605.7791 2.3220930e+09 0.11570423 0.027318618 165.81032 46.760862 6607.7133 2.2037897e+09 0.11376342 0.024298483 165.73062 46.662192 6609.6475 2.1046280e+09 0.11077314 0.023898283 165.65092 46.563523 6611.5818 2.0171413e+09 0.10800181 0.024587448 165.57123 46.464855 6613.5160 1.9356524e+09 0.10670456 0.023762922 165.49153 46.366187 6615.4503 1.8594146e+09 0.10497236 0.023265385 165.40924 46.264306 6617.3845 1.7737396e+09 0.10357067 0.023566731 165.31816 46.151539 6619.3187 1.6818296e+09 0.10250169 0.024602823 165.22709 46.038772 6621.2530 1.5990684e+09 0.10118242 0.025005593 165.15001 45.939007 6623.1872 1.5329074e+09 0.099154591 0.024561191 165.07411 45.840339 6625.1215 1.4729361e+09 0.097313103 0.025542551 164.99510 45.738868 6627.0557 1.4029922e+09 0.094976493 0.025338329 164.90836 45.630439 6628.9899 1.3247676e+09 0.093963296 0.026105024 164.82161 45.522010 6630.9242 1.2541253e+09 0.092573014 0.025930579 164.74551 45.423159 6632.8584 1.2029454e+09 0.091513215 0.026135278 164.66961 45.324490 6634.7927 1.1603070e+09 0.090215087 0.026384664 164.59370 45.225816 6636.7269 1.1212772e+09 0.088793580 0.026267465 164.51779 45.127134 6638.6611 1.0817096e+09 0.087792231 0.025642838 164.44188 45.028451 6640.5954 1.0323675e+09 0.088199092 0.025197805 164.36135 44.919745 6642.5296 9.8187708e+08 0.088044702 0.025173370 164.27894 44.806979 6644.4639 9.2856708e+08 0.087123753 0.025393740 164.20072 44.699937 6646.3981 8.7999437e+08 0.086139302 0.026126221 164.12861 44.601268 6648.3323 8.4221376e+08 0.085099167 0.027186759 164.05651 44.502598 6650.2666 8.1027617e+08 0.084384695 0.026316267 163.98441 44.403930 6652.2008 7.8490389e+08 0.083653405 0.027305777 163.91231 44.305263 6654.1351 7.5790963e+08 0.082718374 0.027978685 163.83881 44.204679 6656.0693 7.2431859e+08 0.080908863 0.028084250 163.75640 44.091912 6658.0035 6.8394061e+08 0.079565928 0.030067373 163.67399 43.979144 6659.9378 6.4834307e+08 0.078123402 0.031638975 163.60014 43.878083 6661.8720 6.2087481e+08 0.076535498 0.032979093 163.52804 43.779415 6663.8063 5.9827664e+08 0.075067737 0.032259776 163.45477 43.677996 6665.7405 5.7487720e+08 0.074816917 0.027333780 163.37669 43.565228 6667.6747 5.4635867e+08 0.074094763 0.027351305 163.29862 43.452460 6669.6090 5.2095332e+08 0.073242396 0.027730228 163.22924 43.352234 6671.5432 4.9823374e+08 0.073204607 0.026873090 163.16093 43.253566 6673.4775 4.7921582e+08 0.072805193 0.028173308 163.09262 43.155864 6675.4117 4.6166781e+08 0.071243671 0.030586931 163.02431 43.060990 6677.3459 4.4388204e+08 0.069765151 0.031866415 162.95600 42.966117 6679.2802 4.2882801e+08 0.069454368 0.030036235 162.88164 42.860161 6681.2144 4.1015227e+08 0.070473263 0.029821865 162.80358 42.747394 6683.1487 3.8934619e+08 0.071106597 0.031406458 162.72976 42.639049 6685.0829 3.7314792e+08 0.070993505 0.032792411 162.66525 42.540381 6687.0171 3.5838219e+08 0.069454693 0.034333335 162.60074 42.441712 6688.9514 3.4979341e+08 0.066819794 0.034004803 162.52702 42.333478 6690.8856 3.3944520e+08 0.065967682 0.033014370 162.44895 42.220712 6692.8199 3.2319221e+08 0.065235410 0.031813263 162.37593 42.113204 6694.7541 3.0790561e+08 0.064610105 0.030204102 162.31142 42.014534 6696.6884 2.9408988e+08 0.064206526 0.029961781 162.24691 41.915865 6698.6226 2.8059340e+08 0.063158949 0.031072394 162.17559 41.806795 6700.5568 2.6707026e+08 0.061569484 0.031080735 162.10186 41.694029 6702.4911 2.5444009e+08 0.060611404 0.033268852 162.03211 41.587356 6704.4253 2.4267489e+08 0.060757547 0.036386403 161.96760 41.488687 6706.3596 2.3560703e+08 0.060463833 0.039072173 161.90309 41.390018 6708.2938 2.2848845e+08 0.059935843 0.040363505 161.83468 41.280111 6710.2280 2.1676896e+08 0.058651335 0.040541129 161.76529 41.167345 6712.1623 2.0883211e+08 0.056598290 0.042131241 161.69829 41.061507 6714.0965 2.0038690e+08 0.054575386 0.047310664 161.63378 40.962838 6716.0308 1.9248049e+08 0.053012684 0.048446653 161.56926 40.864169 6717.9650 1.8965729e+08 0.051070661 0.049814579 161.50057 40.757141 6719.8992 1.8127645e+08 0.049855046 0.050515504 161.43117 40.648712 6721.8335 1.7247579e+08 0.049913600 0.050555028 161.36655 40.545651 6723.7677 1.6317815e+08 0.048130893 0.049797109 161.30583 40.446968 6725.7020 1.5289090e+08 0.044246493 0.041137545 161.24510 40.348286 6727.6362 1.5067147e+08 0.043201560 0.040112797 161.17644 40.236702 6729.5704 1.4588619e+08 0.042274388 0.040665221 161.10704 40.123937 6731.5047 1.3724522e+08 0.040553153 0.042754414 161.03765 40.011181 6733.4389 1.2982866e+08 0.039425746 0.046307284 160.96827 39.898433 6735.3732 1.2334245e+08 0.039969692 0.049689560 160.90151 39.789965 6737.3074 1.2118209e+08 0.041269694 0.055114768 160.84079 39.691283 6739.2416 1.1813882e+08 0.041606288 0.063122263 160.78006 39.592600 6741.1759 1.1172657e+08 0.040217625 0.066260287 160.71643 39.484485 6743.1101 1.0640959e+08 0.036691722 0.071790251 160.65137 39.371718 6745.0444 1.0335381e+08 0.033696103 0.078585532 160.58928 39.265464 6746.9786 99467138. 0.029049379 0.067610055 160.53236 39.170591 6748.9128 95540278. 0.029034328 0.071819339 160.47544 39.075717 6750.8471 89772195. 0.026006053 0.073450540 160.40942 38.967802 6752.7813 85839480. 0.023130168 0.073230352 160.34003 38.855036 6754.7156 84486152. 0.021603159 0.075062774 160.27246 38.742270 6756.6498 83096244. 0.019054694 0.075838920 160.20740 38.629503 6758.5840 79407640. 0.019183771 0.074940336 160.14330 38.518394 6760.5183 74920400. 0.019070608 0.077049592 160.08638 38.419726 6762.4525 71091014. 0.022603692 0.077320905 160.02945 38.321057 6764.3868 65852281. 0.023683854 0.079501814 159.97070 38.215585 6766.3210 62766113. 0.022424240 0.080439838 159.90998 38.102818 6768.2552 59342236. 0.013809375 0.081774412 159.84849 37.990818 6770.1895 57440065. -0.021119258 0.087339255 159.78344 37.882389 6772.1237 56391999. 0.0014264325 0.092030638 159.71838 37.773960 6774.0580 53418696. 0.054586447 0.096722020 159.65711 37.661753