# # 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 = 53.427579 km # Date (UTC) = 2015-01-23T10:55:51.395 # Date (julian) = 2457045.95545596 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.3022 7.2473930e+10 0.026911925 0.030565043 88.718670 45.465714 6496.4702 6.7037526e+10 0.033296544 0.031218808 88.826435 45.301231 6498.6382 6.1731224e+10 0.039708044 0.031872573 88.934186 45.140676 6500.8063 5.6629880e+10 0.046230145 0.032526338 89.041931 44.981897 6502.9743 5.2333919e+10 0.053069240 0.033180104 89.135447 44.844078 6505.1423 4.8894120e+10 0.060459018 0.033833869 89.227812 44.707957 6507.3104 4.5802000e+10 0.068471574 0.034487634 89.333546 44.552141 6509.4784 4.2934415e+10 0.077244622 0.035141399 89.441311 44.393331 6511.6464 3.9845668e+10 0.086667873 0.035795165 89.549077 44.234521 6513.8145 3.6649344e+10 0.096751898 0.036448930 89.654903 44.075711 6515.9825 3.3726728e+10 0.10769852 0.037102695 89.756996 43.916899 6518.1506 3.1170722e+10 0.11962481 0.037756460 89.850647 43.771220 6520.3186 2.9067200e+10 0.13261758 0.038410226 89.938152 43.635101 6522.4866 2.7130301e+10 0.14507081 0.039044679 90.033269 43.487143 6524.6547 2.5106682e+10 0.15367382 0.039659531 90.135361 43.328333 6526.8227 2.2905768e+10 0.16095276 0.040530585 90.237451 43.169522 6528.9907 2.0985098e+10 0.16690070 0.042228430 90.339496 43.010749 6531.1588 1.9471989e+10 0.17266705 0.045459762 90.422259 42.869674 6533.3268 1.8122143e+10 0.17742977 0.047658467 90.504892 42.728718 6535.4948 1.6892613e+10 0.17836788 0.048009640 90.600459 42.571011 6537.6629 1.5625043e+10 0.17846818 0.048997739 90.695318 42.416171 6539.8309 1.4449916e+10 0.17747625 0.050649417 90.782824 42.280052 6541.9989 1.3437629e+10 0.17481883 0.051002582 90.870712 42.141254 6544.1670 1.2521585e+10 0.17246286 0.051779801 90.961459 41.982444 6546.3350 1.1608080e+10 0.17034126 0.052740186 91.054221 41.823634 6548.5030 1.0712248e+10 0.16869335 0.053817873 91.150645 41.664822 6550.6711 9.9395878e+09 0.16707762 0.055153392 91.238913 41.519440 6552.8391 9.2851304e+09 0.16564595 0.055375562 91.321556 41.383321 6555.0072 8.6574915e+09 0.16391251 0.054847356 91.408533 41.235066 6557.1752 8.0587812e+09 0.16169720 0.053756300 91.499280 41.076256 6559.3432 7.5265945e+09 0.15909825 0.052348441 91.580023 40.934956 6561.5113 7.0583921e+09 0.15644648 0.051120745 91.657808 40.798835 6563.6793 6.6456003e+09 0.15369577 0.049142583 91.744856 40.646498 6565.8473 6.2174278e+09 0.15132518 0.047356246 91.835603 40.487688 6568.0154 5.8099770e+09 0.14968475 0.045757541 91.914015 40.350470 6570.1834 5.4625686e+09 0.14794505 0.044841540 91.991799 40.214352 6572.3514 5.1948372e+09 0.14568883 0.044028899 92.069584 40.078231 6574.5195 4.9605446e+09 0.14279870 0.042605506 92.147368 39.942111 6576.6875 4.6954714e+09 0.13986652 0.040580063 92.231243 39.782264 6578.8555 4.4252274e+09 0.13630197 0.037298620 92.315401 39.619914 6581.0236 4.1670281e+09 0.13317243 0.035589471 92.388323 39.483794 6583.1916 3.9375406e+09 0.13085380 0.034924683 92.461549 39.347285 6585.3596 3.7156740e+09 0.12865471 0.033683246 92.552300 39.188476 6587.5277 3.4941303e+09 0.12709172 0.033275283 92.638522 39.035429 6589.6957 3.2799544e+09 0.12543303 0.031665744 92.711441 38.899309 6591.8637 3.1040760e+09 0.12320442 0.028227270 92.784360 38.763190 6594.0318 2.9752214e+09 0.12093555 0.026155076 92.857282 38.627069 6596.1998 2.8438836e+09 0.11831662 0.025726365 92.931111 38.487773 6598.3679 2.7085899e+09 0.11656346 0.025231538 93.010516 38.328963 6600.5359 2.5607376e+09 0.11626351 0.026091566 93.087478 38.178704 6602.7039 2.4219055e+09 0.11556142 0.026915932 93.160400 38.042585 6604.8720 2.3044261e+09 0.11467150 0.026589017 93.231767 37.906465 6607.0400 2.2131659e+09 0.11335711 0.025628019 93.299826 37.770345 6609.2080 2.1219716e+09 0.11015838 0.023767726 93.370867 37.628261 6611.3761 2.0105216e+09 0.10737912 0.024718637 93.450272 37.469450 6613.5441 1.9005652e+09 0.10635970 0.023773222 93.526438 37.321979 6615.7121 1.7990565e+09 0.10482221 0.023273442 93.599360 37.185860 6617.8802 1.7166783e+09 0.10385370 0.023731067 93.667976 37.049742 6620.0482 1.6444959e+09 0.10291054 0.024782732 93.731173 36.913623 6622.2162 1.5759475e+09 0.10129091 0.024700436 93.796247 36.777503 6624.3843 1.5120404e+09 0.099170252 0.025068011 93.864310 36.641382 6626.5523 1.4469981e+09 0.097203565 0.025887207 93.936101 36.497804 6628.7203 1.3799394e+09 0.095501704 0.025995563 94.015506 36.338994 6630.8884 1.3056590e+09 0.093735973 0.025930491 94.088488 36.195779 6633.0564 1.2355015e+09 0.092526413 0.026162103 94.156536 36.064543 6635.2245 1.1780991e+09 0.091266184 0.026433448 94.222118 35.930826 6637.3925 1.1283787e+09 0.090136275 0.025969183 94.285315 35.794707 6639.5605 1.0898312e+09 0.089691766 0.025427731 94.348513 35.658587 6641.7286 1.0501238e+09 0.090153604 0.025150774 94.411710 35.522465 6643.8966 1.0052065e+09 0.089336025 0.025327993 94.481296 35.377401 6646.0646 9.4959833e+08 0.088550838 0.025953601 94.560701 35.218591 6648.2327 8.9740982e+08 0.087711144 0.027120030 94.629880 35.074101 6650.4007 8.5238916e+08 0.087164782 0.026346968 94.693080 34.937982 6652.5687 8.1764299e+08 0.086702297 0.027407003 94.756279 34.801862 6654.7368 7.8843966e+08 0.085636607 0.027722355 94.819476 34.665741 6656.9048 7.6132562e+08 0.083639046 0.028817559 94.880161 34.529622 6659.0728 7.3662180e+08 0.081952183 0.031819404 94.938499 34.393503 6661.2409 7.0706890e+08 0.080557744 0.032657632 95.003919 34.249554 6663.4089 6.7445553e+08 0.079236305 0.032369894 95.077651 34.096414 6665.5769 6.3694013e+08 0.078916072 0.027601785 95.144044 33.955136 6667.7450 6.0342262e+08 0.078257954 0.027377102 95.207245 33.819017 6669.9130 5.7647458e+08 0.077471480 0.027417972 95.267331 33.682898 6672.0811 5.5555681e+08 0.077043506 0.026926578 95.325666 33.546780 6674.2491 5.3796655e+08 0.075873413 0.029164912 95.386837 33.410660 6676.4171 5.2163876e+08 0.073397689 0.031982556 95.450038 33.274539 6678.5852 5.0042222e+08 0.072447310 0.030545236 95.515793 33.129469 6680.7532 4.7398299e+08 0.073261345 0.029604062 95.583852 32.976330 6682.9212 4.4825735e+08 0.074097680 0.031128395 95.644496 32.836173 6685.0893 4.2374694e+08 0.074158480 0.032799120 95.702834 32.700055 6687.2573 4.0537161e+08 0.072491024 0.034199403 95.761170 32.563935 6689.4253 3.9461842e+08 0.070060916 0.033633157 95.819505 32.427815 6691.5934 3.8829921e+08 0.069104853 0.032861267 95.877842 32.294849 6693.7614 3.8433297e+08 0.068127486 0.031342880 95.936181 32.163591 6695.9294 3.7536976e+08 0.067950560 0.029688747 96.000273 32.016030 6698.0975 3.6265425e+08 0.067177137 0.030351610 96.068336 31.857219 6700.2655 3.4605246e+08 0.065611889 0.030864653 96.124312 31.717210 6702.4335 3.3135812e+08 0.064483688 0.033222917 96.177788 31.581090 6704.6016 3.1567707e+08 0.064870878 0.036472960 96.235005 31.448740 6706.7696 3.0300261e+08 0.064669116 0.039785857 96.293330 31.317505 6708.9376 2.9080357e+08 0.064158831 0.041064645 96.358610 31.166574 6711.1057 2.8113647e+08 0.062449266 0.040812472 96.426674 31.007761 6713.2737 2.7012477e+08 0.060431261 0.044676609 96.480863 30.870533 6715.4418 2.5518482e+08 0.058595940 0.047830402 96.534338 30.734413 6717.6098 2.4391842e+08 0.056563016 0.049836550 96.587814 30.602641 6719.7778 2.3419288e+08 0.055074320 0.050630849 96.641290 30.471383 6721.9459 2.2893017e+08 0.055150778 0.050588891 96.706973 30.317061 6724.1139 2.2427827e+08 0.052794293 0.048975562 96.773953 30.160289 6726.2819 2.1306566e+08 0.049212638 0.040953910 96.827429 30.029031 6728.4500 2.0036612e+08 0.048732346 0.040265848 96.880905 29.897690 6730.6180 1.9240422e+08 0.047220818 0.041226257 96.934380 29.761571 6732.7860 1.8391844e+08 0.045990552 0.043884916 96.987856 29.625452 6734.9541 1.7909312e+08 0.045978599 0.049296196 97.049890 29.472994 6737.1221 1.7115995e+08 0.047698885 0.054524538 97.110526 29.323204 6739.2901 1.6636001e+08 0.048197452 0.063181630 97.164001 29.187084 6741.4582 1.6235921e+08 0.046579573 0.067065438 97.217477 29.051645 6743.6262 1.5652172e+08 0.042230554 0.075271848 97.270953 28.920386 6745.7942 1.5075541e+08 0.040372151 0.078900781 97.324697 28.787316 6747.9623 1.3973490e+08 0.036210520 0.067029884 97.381414 28.634178 6750.1303 1.3161329e+08 0.033479791 0.072226654 97.437095 28.486481 6752.2984 1.2426463e+08 0.030636386 0.073789227 97.490571 28.350361 6754.4664 1.1744421e+08 0.029182906 0.075463461 97.544047 28.215519 6756.6344 1.1413008e+08 0.026363680 0.075799373 97.597523 28.084261 6758.8025 1.1198567e+08 0.026690518 0.075402226 97.651663 27.947342 6760.9705 1.0887991e+08 0.026871604 0.077911957 97.708369 27.788562 6763.1385 1.0605244e+08 0.032053555 0.076859656 97.763647 27.641954 6765.3066 1.0242283e+08 0.034179409 0.079587157 97.817122 27.510696 6767.4746 95596561. 0.032704954 0.081444338 97.871847 27.371009 6769.6426 90885376. 0.027743738 0.086012931 97.928564 27.217870 6771.8107 86282804. 0.023593548 0.091271370 97.980242 27.078343 6773.9787 83112340. 0.019475119 0.096529808 98.028859 26.947085 6776.1467 81246999. 0.015410338 0.10178825 98.082053 26.800257 6778.3148 77598430. 0.011316491 0.10704669 98.138771 26.641447 6780.4828 74683808. 0.0072474020 0.11230512 98.192889 26.504733 6782.6508 70976746. 0.0031303891 0.11756356 98.246365 26.373474 6784.8189 69453485. -0.00091695691 0.12282200 98.302255 26.225915 6786.9869 68585906. -0.0049544723 0.12808044 98.358973 26.072776 6789.1550 64393333. -0.0092178720 0.13333888 98.407733 25.941121 6791.3230 61823317. -0.013482653 0.13859732 98.456346 25.809863 6793.4910 60270576. -0.017808422 0.14385575 98.507212 25.653123 6795.6591 58614956. -0.022351168 0.14911419 98.559177 25.495230 6797.8271 58008477. -0.027156967 0.15437263 98.615894 25.342092 6799.9951 55079603. -0.033010840 0.15963107 98.669381 25.197675 6802.1632 52419004. -0.041474993 0.16488951 98.717994 25.066417 6804.3312 51222285. -0.070955683 0.17014795 98.769372 24.927694 6806.4992 49327324. -0.053582238 0.17540639 98.826079 24.774584 6808.6673 46496652. -0.0089823735 0.18066482 98.879514 24.621458