# # 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 = 57.050681 km # Date (UTC) = 2014-01-10T10:25:12.477 # Date (julian) = 2456667.93417219 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.4912 5.8740967e+10 0.059426210 0.033335962 97.997890 37.845113 6505.7995 5.4245949e+10 0.069508667 0.034032045 98.071655 37.722830 6508.1079 5.0096833e+10 0.079893741 0.034728128 98.144120 37.600547 6510.4163 4.6308071e+10 0.090613694 0.035424211 98.216584 37.475977 6512.7247 4.2937142e+10 0.10173580 0.036120294 98.289046 37.349165 6515.0330 3.9504090e+10 0.11312549 0.036816377 98.366119 37.218511 6517.3414 3.5870987e+10 0.12467936 0.037512460 98.454116 37.078758 6519.6498 3.2350670e+10 0.13646888 0.038208543 98.534792 36.943727 6521.9581 2.9200114e+10 0.14858835 0.038904626 98.602728 36.816914 6524.2665 2.6534960e+10 0.15476495 0.039521637 98.671375 36.690810 6526.5749 2.4264595e+10 0.16010870 0.040270776 98.743848 36.568509 6528.8832 2.2148048e+10 0.16432713 0.042143163 98.816320 36.446208 6531.1916 2.0259097e+10 0.16797221 0.045507579 98.888786 36.323924 6533.5000 1.8585964e+10 0.17138492 0.047732066 98.961252 36.201641 6535.8084 1.7067084e+10 0.17191394 0.047873635 99.030357 36.076002 6538.1167 1.5687213e+10 0.17364691 0.049213521 99.098288 35.949191 6540.4251 1.4424106e+10 0.17397044 0.051054930 99.168638 35.824795 6542.7335 1.3280461e+10 0.17264309 0.051280704 99.241103 35.702512 6545.0418 1.2228719e+10 0.17144413 0.052455942 99.312095 35.580229 6547.3502 1.1274709e+10 0.16925663 0.053420543 99.380031 35.457947 6549.6586 1.0394991e+10 0.16715356 0.054637428 99.447966 35.335664 6551.9670 9.6058186e+09 0.16526767 0.055575166 99.515898 35.213383 6554.2753 8.8706038e+09 0.16274318 0.054838158 99.583830 35.091102 6556.5837 8.2028650e+09 0.16054649 0.053927312 99.651765 34.964701 6558.8921 7.5985886e+09 0.15795437 0.052479155 99.719700 34.837888 6561.2004 7.0711246e+09 0.15520697 0.051273910 99.787636 34.714252 6563.5088 6.6321339e+09 0.15263270 0.049339795 99.855571 34.591969 6565.8172 6.1924316e+09 0.15026898 0.047390481 99.925741 34.461069 6568.1255 5.7553061e+09 0.14875959 0.045656253 99.998206 34.321314 6570.4339 5.3265870e+09 0.14734676 0.044737765 100.06813 34.191367 6572.7423 4.9445000e+09 0.14572057 0.043805066 100.13606 34.069086 6575.0507 4.6419864e+09 0.14368784 0.042323879 100.20240 33.946798 6577.3590 4.3711813e+09 0.14119416 0.039656421 100.26582 33.824497 6579.6674 4.1210989e+09 0.13849279 0.036703597 100.32989 33.702198 6581.9758 3.8835250e+09 0.13611205 0.035301132 100.39783 33.579916 6584.2841 3.6564089e+09 0.13372067 0.034360728 100.46576 33.457633 6586.5925 3.4520627e+09 0.13142382 0.033163637 100.52945 33.331103 6588.9009 3.2634781e+09 0.12909124 0.033079077 100.59285 33.204290 6591.2093 3.0946661e+09 0.12601862 0.028965789 100.65626 33.080784 6593.5176 2.9368840e+09 0.12305815 0.026620985 100.71967 32.958503 6595.8260 2.7857443e+09 0.11960075 0.025709229 100.78307 32.836221 6598.1344 2.6476843e+09 0.11717414 0.025343013 100.84648 32.713938 6600.4427 2.5159847e+09 0.11651840 0.025900063 100.90846 32.591655 6602.7511 2.3901620e+09 0.11596218 0.026875667 100.96734 32.469373 6605.0595 2.2669199e+09 0.11547366 0.026714942 101.02669 32.347090 6607.3679 2.1562620e+09 0.11423937 0.024980628 101.09010 32.224808 6609.6762 2.0595382e+09 0.11136459 0.023906801 101.15351 32.102525 6611.9846 1.9638125e+09 0.10905647 0.024330577 101.21691 31.980242 6614.2930 1.8686227e+09 0.10828987 0.023738652 101.28032 31.857959 6616.6013 1.7772013e+09 0.10703311 0.023376678 101.34060 31.735677 6618.9097 1.6887568e+09 0.10650710 0.024457731 101.39948 31.613394 6621.2181 1.6129248e+09 0.10577029 0.025017165 101.45836 31.491103 6623.5264 1.5383988e+09 0.10411969 0.024686866 101.51724 31.368803 6625.8348 1.4641636e+09 0.10287767 0.026393791 101.57612 31.246507 6628.1432 1.3982424e+09 0.10107279 0.025761230 101.63500 31.124224 6630.4516 1.3352265e+09 0.099418048 0.025929415 101.69418 31.001942 6632.7599 1.2764828e+09 0.097732582 0.026123467 101.75759 30.879659 6635.0683 1.2207611e+09 0.096060728 0.026410030 101.82099 30.757377 6637.3767 1.1634349e+09 0.094382381 0.025976930 101.88773 30.620105 6639.6850 1.0993185e+09 0.093742690 0.025383226 101.95502 30.480351 6641.9934 1.0395808e+09 0.093825597 0.025151674 102.01032 30.356774 6644.3018 9.8367279e+08 0.092514036 0.025376222 102.06467 30.234492 6646.6102 9.3487992e+08 0.091151814 0.026235982 102.12227 30.115461 6648.9185 8.9495192e+08 0.089696427 0.027579147 102.18115 29.997707 6651.2269 8.5382831e+08 0.089325512 0.026658047 102.24002 29.877644 6653.5353 8.1316105e+08 0.088964168 0.027798949 102.29890 29.755362 6655.8436 7.7685609e+08 0.087413805 0.027958808 102.35641 29.633079 6658.1520 7.4114743e+08 0.085989793 0.030330667 102.41075 29.510797 6660.4604 7.1176291e+08 0.084535351 0.032044459 102.46553 29.388514 6662.7687 6.8402805e+08 0.083212730 0.032612958 102.52440 29.266231 6665.0771 6.5515486e+08 0.082576061 0.028420768 102.58328 29.143947 6667.3855 6.2933740e+08 0.082059649 0.027245055 102.63815 29.021666 6669.6939 6.0371371e+08 0.081179820 0.027643059 102.69249 28.899384 6672.0022 5.8142049e+08 0.080943321 0.026880893 102.74992 28.780160 6674.3106 5.5674518e+08 0.079893133 0.029216804 102.80880 28.662389 6676.6190 5.2997821e+08 0.077507920 0.032112648 102.86921 28.534280 6678.9273 5.0652781e+08 0.076575743 0.030316367 102.93132 28.394525 6681.2357 4.8263727e+08 0.077591121 0.029838195 102.98925 28.264176 6683.5441 4.6163005e+08 0.077965522 0.031985944 103.04360 28.141893 6685.8525 4.4127042e+08 0.077406114 0.033605241 103.09795 28.021107 6688.1608 4.1716524e+08 0.074793899 0.033822315 103.15230 27.903352 6690.4692 4.0252184e+08 0.072811526 0.033062093 103.20664 27.785045 6692.7776 3.9240942e+08 0.071636414 0.031862386 103.26099 27.662763 6695.0859 3.8492591e+08 0.070758809 0.029843688 103.31534 27.540481 6697.3943 3.7490660e+08 0.069917074 0.030141166 103.37679 27.402224 6699.7027 3.5893100e+08 0.068357149 0.030942059 103.43890 27.262470 6702.0111 3.4066586e+08 0.066610296 0.032885554 103.48894 27.144327 6704.3194 3.2310624e+08 0.067184244 0.036334406 103.53876 27.026574 6706.6278 3.1019520e+08 0.067156502 0.039539028 103.59208 26.905314 6708.9362 2.9931102e+08 0.066682673 0.041063027 103.64643 26.783031 6711.2445 2.8911188e+08 0.064932562 0.040970445 103.70078 26.663313 6713.5529 2.7877755e+08 0.062807560 0.045686362 103.75513 26.545559 6715.8613 2.6908797e+08 0.060957232 0.048259476 103.81040 26.419922 6718.1696 2.5729549e+08 0.058834665 0.050076625 103.86734 26.280168 6720.4780 2.4854930e+08 0.058194846 0.050364380 103.92124 26.147864 6722.7864 2.3893723e+08 0.057668318 0.049633024 103.97106 26.025581 6725.0948 2.2678131e+08 0.053503014 0.041516829 104.02356 25.900614 6727.4031 2.1654389e+08 0.052191937 0.040423303 104.08568 25.766035 6729.7115 2.0665312e+08 0.051407084 0.040571195 104.14427 25.636275 6732.0199 2.0041536e+08 0.049608200 0.043743867 104.19408 25.518521 6734.3282 1.9672030e+08 0.048886307 0.049333850 104.24390 25.400412 6736.6366 1.9254708e+08 0.050698002 0.052761756 104.29372 25.278129 6738.9450 1.8617114e+08 0.051621166 0.062523657 104.34354 25.155847 6741.2534 1.7683274e+08 0.050303424 0.066481270 104.39956 25.022862 6743.5617 1.6780911e+08 0.045951966 0.074836817 104.45649 24.888284 6745.8701 1.6100881e+08 0.043954942 0.078932667 104.50676 24.765228 6748.1785 1.5646219e+08 0.039742639 0.067955815 104.55658 24.642928 6750.4868 1.5221001e+08 0.036904048 0.072835424 104.61161 24.511655 6752.7952 1.4519644e+08 0.034118124 0.073214273 104.66854 24.377077 6755.1036 1.3616887e+08 0.032328464 0.074559933 104.71980 24.255938 6757.4119 1.3078326e+08 0.030108693 0.075489901 104.76961 24.138185 6759.7203 1.2646682e+08 0.030958132 0.075993780 104.82364 24.007433 6762.0287 1.2298744e+08 0.034538663 0.078004565 104.88058 23.867677 6764.3371 1.1691551e+08 0.037615126 0.079499433 104.93282 23.742418 6766.6454 1.1252765e+08 0.038257441 0.081173726 104.98264 23.624664 6768.9538 1.0808631e+08 0.033346979 0.084288031 105.03334 23.499326 6771.2622 1.0427192e+08 0.028883932 0.089941026 105.08510 23.364747 6773.5705 1.0082220e+08 0.024426943 0.095539839 105.13954 23.230170 6775.8789 96281613. 0.019956676 0.10113865 105.19648 23.095592 6778.1873 95082283. 0.015440239 0.10673747 105.24658 22.968231 6780.4957 93769271. 0.010920769 0.11233628 105.29187 22.845947 6782.8040 91113418. 0.0064002103 0.11793510 105.34157 22.719005 6785.1124 85183015. 0.0018424292 0.12353391 105.39851 22.584427 6787.4208 82394663. -0.0027134064 0.12913272 105.45314 22.449848 6789.7291 76141037. -0.0073538831 0.13473154 105.50490 22.315270 6792.0375 72387340. -0.011976983 0.14033035 105.55932 22.180692 6794.3459 70233137. -0.016569714 0.14592916 105.61626 22.046114 6796.6543 64962637. -0.021348830 0.15152798 105.66640 21.921345 6798.9626 64914182. -0.025877920 0.15712679 105.71169 21.803591 6801.2710 59991584. -0.030795384 0.16272561 105.75941 21.679528 6803.5794 56375095. -0.035775295 0.16832442 105.81117 21.544948 6805.8877 55643946. -0.040655308 0.17392323 105.86293 21.410370 6808.1961 54910364. -0.045886277 0.17952205 105.91470 21.275791 6810.5045 55107257. -0.051659512 0.18512086 105.96646 21.141214 6812.8128 55208854. -0.059910133 0.19071968 106.01822 21.006636 6815.1212 53541212. -0.089816224 0.19631849 106.06998 20.872058 6817.4296 50542475. -0.072972773 0.20191730 106.12174 20.737480 6819.7380 46081430. -0.026293611 0.20751612 106.17350 20.602902