# # 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 = 44.658420 km # Date (UTC) = 2012-01-19T09:17:17.940 # Date (julian) = 2455945.88701319 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.6326 1.3057858e+11 0.047869565 0.032473976 -21.269080 49.726035 6502.5039 1.1618392e+11 0.055189432 0.033038246 -21.369782 49.612745 6504.3751 1.0397672e+11 0.062743399 0.033602517 -21.470484 49.499455 6506.2464 9.3759268e+10 0.070625997 0.034166788 -21.571187 49.386164 6508.1176 8.4656267e+10 0.078824880 0.034731059 -21.678872 49.267055 6509.9889 7.5845614e+10 0.087233162 0.035295330 -21.796362 49.139775 6511.8601 6.7651924e+10 0.095859868 0.035859600 -21.906020 49.017717 6513.7314 6.0843219e+10 0.10489181 0.036423871 -22.002526 48.904427 6515.6026 5.5343523e+10 0.11441198 0.036988142 -22.099033 48.791137 6517.4739 5.0755670e+10 0.12440044 0.037552413 -22.195539 48.677846 6519.3451 4.6714993e+10 0.13479206 0.038116683 -22.292045 48.564556 6521.2164 4.3190029e+10 0.14559286 0.038680954 -22.388552 48.453811 6523.0876 4.0147322e+10 0.15375772 0.039200833 -22.485058 48.344716 6524.9589 3.7271060e+10 0.16058270 0.039767610 -22.585154 48.230470 6526.8301 3.4250544e+10 0.16526420 0.040538390 -22.697726 48.098322 6528.7014 3.1255434e+10 0.16904946 0.041998897 -22.806645 47.969574 6530.5726 2.8484232e+10 0.17293235 0.044630384 -22.898956 47.856284 6532.4439 2.6198368e+10 0.17662611 0.047055017 -22.991266 47.742994 6534.3151 2.4307608e+10 0.17775347 0.048032715 -23.083576 47.629704 6536.1864 2.2567881e+10 0.17695044 0.047957273 -23.175886 47.516414 6538.0576 2.1000075e+10 0.17728448 0.049184751 -23.266460 47.404859 6539.9289 1.9561619e+10 0.17659008 0.050768033 -23.354575 47.295764 6541.8001 1.8231842e+10 0.17412517 0.051067048 -23.442818 47.186540 6543.6714 1.6997939e+10 0.17210935 0.051558105 -23.535128 47.073250 6545.5426 1.5861995e+10 0.17051822 0.052460429 -23.627438 46.959960 6547.4139 1.4831164e+10 0.16922501 0.053444763 -23.717033 46.846671 6549.2852 1.3939303e+10 0.16736073 0.054256872 -23.805148 46.733382 6551.1564 1.3063887e+10 0.16581616 0.055290651 -23.897140 46.615108 6553.0277 1.2132267e+10 0.16473892 0.055321166 -23.999944 46.482931 6554.8989 1.1206436e+10 0.16326346 0.054851243 -24.098568 46.354934 6556.7702 1.0361512e+10 0.16130481 0.053899898 -24.182487 46.241644 6558.6414 9.6846820e+09 0.15913562 0.052692747 -24.266406 46.128354 6560.5127 9.1371049e+09 0.15692676 0.051812083 -24.353840 46.018579 6562.3839 8.6239069e+09 0.15466999 0.050514600 -24.441954 45.909484 6564.2552 8.1374679e+09 0.15198432 0.048655959 -24.528161 45.798482 6566.1264 7.6817600e+09 0.14973305 0.047111374 -24.612080 45.685193 6567.9977 7.2579204e+09 0.14813733 0.045773639 -24.695999 45.571904 6569.8689 6.8605658e+09 0.14633750 0.044908977 -24.779917 45.458614 6571.7402 6.4894190e+09 0.14417005 0.044301122 -24.863835 45.345324 6573.6114 6.1379376e+09 0.14149806 0.043166836 -24.944866 45.232033 6575.4827 5.8129933e+09 0.13899505 0.041890443 -25.024589 45.118743 6577.3539 5.4998360e+09 0.13644238 0.039664455 -25.105592 45.005452 6579.2252 5.2090573e+09 0.13366099 0.036946713 -25.189510 44.892162 6581.0964 4.9332114e+09 0.13160182 0.035567412 -25.273429 44.778872 6582.9677 4.6680023e+09 0.13020748 0.035030464 -25.353480 44.665582 6584.8389 4.4200006e+09 0.12851454 0.034058519 -25.433202 44.552292 6586.7102 4.1780101e+09 0.12672321 0.033162116 -25.512924 44.439001 6588.5814 3.9525884e+09 0.12515606 0.033185763 -25.592648 44.325711 6590.4527 3.7399481e+09 0.12317221 0.030220023 -25.671720 44.212420 6592.3239 3.5452220e+09 0.12103192 0.027758897 -25.747246 44.099130 6594.1952 3.3569432e+09 0.11880719 0.026065382 -25.822773 43.985840 6596.0664 3.1790355e+09 0.11618977 0.025726972 -25.901539 43.875789 6597.9377 3.0036363e+09 0.11443210 0.025426832 -25.981262 43.766696 6599.8089 2.8360519e+09 0.11341296 0.024978383 -26.059353 43.655971 6601.6802 2.6879548e+09 0.11273478 0.027366016 -26.134880 43.542681 6603.5514 2.5394448e+09 0.11126066 0.026336828 -26.210406 43.429390 6605.4227 2.4033817e+09 0.11052554 0.027019640 -26.285933 43.316100 6607.2939 2.2750663e+09 0.10879729 0.025126588 -26.361459 43.202810 6609.1652 2.1530271e+09 0.10572893 0.023754999 -26.436986 43.089519 6611.0364 2.0406904e+09 0.10275834 0.024935221 -26.512513 42.976229 6612.9077 1.9428977e+09 0.10146433 0.023642564 -26.585785 42.866321 6614.7789 1.8617717e+09 0.099862067 0.023403835 -26.651870 42.767195 6616.6502 1.7971974e+09 0.097985338 0.023384346 -26.717954 42.668068 6618.5214 1.7371738e+09 0.097040048 0.024164544 -26.786741 42.561646 6620.3927 1.6663944e+09 0.096347422 0.024893742 -26.858072 42.448356 6622.2639 1.5940738e+09 0.095328495 0.024687740 -26.929955 42.335066 6624.1352 1.5201274e+09 0.093863976 0.024934677 -27.005482 42.221777 6626.0064 1.4481144e+09 0.093116815 0.026582695 -27.081010 42.108488 6627.8777 1.3799539e+09 0.091703268 0.025655850 -27.153395 41.998338 6629.7489 1.3138727e+09 0.090699311 0.025973693 -27.224726 41.889243 6631.6202 1.2504669e+09 0.089245473 0.025993765 -27.296057 41.778616 6633.4914 1.1917273e+09 0.088138160 0.026238055 -27.367388 41.665326 6635.3627 1.1385055e+09 0.086927817 0.026454180 -27.438718 41.552035 6637.2339 1.0840355e+09 0.085766642 0.026046831 -27.505929 41.438745 6639.1052 1.0274406e+09 0.084923503 0.025590474 -27.573063 41.325455 6640.9765 9.7694481e+08 0.085546359 0.025151182 -27.642711 41.212165 6642.8477 9.3063718e+08 0.085185415 0.025186386 -27.714042 41.098874 6644.7190 8.8913078e+08 0.084189525 0.025421309 -27.784469 40.985583 6646.5902 8.5016793e+08 0.083069751 0.026225656 -27.851604 40.872295 6648.4615 8.0682885e+08 0.082054569 0.027273184 -27.918738 40.759006 6650.3327 7.6701735e+08 0.081491706 0.026331403 -27.989365 40.645716 6652.2040 7.3033847e+08 0.080913438 0.027306638 -28.060696 40.532426 6654.0752 6.9424988e+08 0.080138803 0.028004186 -28.130143 40.419136 6655.9465 6.6485927e+08 0.078399118 0.028001295 -28.197278 40.305846 6657.8177 6.3428169e+08 0.077033782 0.029849629 -28.264137 40.192831 6659.6890 6.0414148e+08 0.075727193 0.031690880 -28.327075 40.083736 6661.5602 5.7620306e+08 0.074567633 0.032820278 -28.390014 39.974641 6663.4315 5.4884788e+08 0.073704360 0.032363644 -28.455817 39.862683 6665.3027 5.2347823e+08 0.073669327 0.028051122 -28.522952 39.749392 6667.1740 5.0001107e+08 0.073450201 0.027167358 -28.587576 39.640339 6669.0452 4.7815603e+08 0.072497243 0.028309262 -28.646317 39.541214 6670.9165 4.6285410e+08 0.072754757 0.026904048 -28.705059 39.442088 6672.7877 4.4823384e+08 0.072532134 0.027336175 -28.766216 39.334812 6674.6590 4.3422700e+08 0.071410953 0.029510675 -28.829154 39.221522 6676.5302 4.1812091e+08 0.069478893 0.032055448 -28.892093 39.108232 6678.4015 4.0181971e+08 0.068857063 0.030668092 -28.955033 38.994942 6680.2727 3.8768805e+08 0.069340204 0.029500309 -29.017972 38.881652 6682.1440 3.7195831e+08 0.069970227 0.030534544 -29.080911 38.771755 6684.0152 3.5854385e+08 0.070103128 0.032654864 -29.143850 38.662660 6685.8865 3.4177461e+08 0.069680359 0.033641174 -29.206789 38.551780 6687.7577 3.2718632e+08 0.067608168 0.033920309 -29.269728 38.438490 6689.6290 3.1548020e+08 0.065529177 0.033449843 -29.332667 38.325201 6691.5002 3.0417497e+08 0.064571965 0.032883242 -29.395606 38.211911 6693.3715 2.9070469e+08 0.063762097 0.031476648 -29.458544 38.098621 6695.2427 2.7593252e+08 0.063345689 0.029814887 -29.521483 37.985331 6697.1140 2.6268998e+08 0.062727473 0.030105690 -29.584422 37.872040 6698.9852 2.5387574e+08 0.061417156 0.031570162 -29.646203 37.759907 6700.8565 2.4515963e+08 0.059725735 0.031302996 -29.704947 37.650813 6702.7277 2.3670874e+08 0.059130810 0.033457830 -29.763690 37.541718 6704.5990 2.2626132e+08 0.059260788 0.036471687 -29.826169 37.428895 6706.4702 2.1501495e+08 0.059041636 0.039264815 -29.889097 37.315625 6708.3415 2.0563140e+08 0.058628059 0.040415446 -29.949895 37.202344 6710.2127 1.9492614e+08 0.057431224 0.040538136 -30.008638 37.089055 6712.0840 1.8720039e+08 0.055455331 0.041985900 -30.067381 36.975766 6713.9552 1.8001128e+08 0.053458939 0.047141524 -30.126125 36.862475 6715.8265 1.7173143e+08 0.051895805 0.048223900 -30.184868 36.749185 6717.6977 1.6259148e+08 0.049952795 0.049831110 -30.243611 36.639010 6719.5690 1.5715166e+08 0.048340406 0.050829253 -30.302354 36.529915 6721.4402 1.5108079e+08 0.048481819 0.050436547 -30.361097 36.419313 6723.3115 1.4448955e+08 0.047101629 0.049542671 -30.419839 36.306023 6725.1827 1.3988895e+08 0.043078676 0.041461867 -30.478582 36.192733 6727.0540 1.3332353e+08 0.041505437 0.040888446 -30.533231 36.079442 6728.9252 1.2852183e+08 0.041163058 0.040939481 -30.587778 35.966152 6730.7965 1.2453780e+08 0.039470527 0.041471002 -30.644812 35.855349 6732.6678 1.1970969e+08 0.038185563 0.043863140 -30.703555 35.746255 6734.5390 1.1624337e+08 0.037714667 0.049321169 -30.761420 35.636282 6736.4103 1.1045008e+08 0.039085655 0.051905992 -30.815966 35.522992 6738.2815 1.0537029e+08 0.039897982 0.058870900 -30.870513 35.409702 6740.1528 1.0397301e+08 0.039550112 0.064311318 -30.928527 35.296412 6742.0240 1.0114518e+08 0.037528736 0.068669246 -30.987270 35.183121 6743.8953 97439649. 0.033227658 0.077086820 -31.044155 35.071690 6745.7665 93170446. 0.032026930 0.078889120 -31.098702 34.962596 6747.6378 88499733. 0.027651797 0.067141605 -31.153249 34.853253 6749.5090 85005776. 0.026258405 0.072138566 -31.207796 34.739963 6751.3803 79887605. 0.023519385 0.073872447 -31.262343 34.626673 6753.2515 76922695. 0.021312673 0.073791229 -31.316890 34.516221 6755.1228 75659351. 0.019409861 0.074551522 -31.371437 34.407127 6756.9940 73465012. 0.016463229 0.076724654 -31.428649 34.291270 6758.8653 71456142. 0.016612945 0.075535040 -31.492290 34.159093 6760.7365 67178662. 0.015232171 0.077465774 -31.553654 34.032694 6762.6078 67622032. 0.017632022 0.077070467 -31.608201 33.923599 6764.4790 64340906. 0.013930120 0.079506234 -31.662748 33.814504 6766.3503 61147358. -0.020748957 0.080506063 -31.713657 33.701772 6768.2215 59331169. 0.0049830696 0.081653108 -31.764008 33.588482 6770.0928 57253596. 0.065170984 0.087104712 -31.816389 33.477222