# # 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 = 55.973598 km # Date (UTC) = 2013-12-10T10:00:12.985 # Date (julian) = 2456636.91681696 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.3958 4.4926982e+10 0.065941922 0.033910299 -30.952029 51.011531 6508.0107 4.1710925e+10 0.076280964 0.034698806 -31.090548 50.888402 6510.6255 3.8518995e+10 0.086924351 0.035487313 -31.226017 50.769128 6513.2404 3.5464099e+10 0.097918253 0.036275821 -31.353719 50.659670 6515.8553 3.2675276e+10 0.10932318 0.037064328 -31.481012 50.550212 6518.4702 3.0394327e+10 0.12132740 0.037852836 -31.604139 50.440766 6521.0850 2.8263869e+10 0.13385695 0.038641343 -31.727265 50.331320 6523.6999 2.6406776e+10 0.14210302 0.039352581 -31.850390 50.221875 6526.3148 2.4546805e+10 0.14725828 0.039998086 -31.973515 50.112431 6528.9296 2.2559946e+10 0.15163567 0.042179968 -32.103863 49.993357 6531.5445 2.0620561e+10 0.15545241 0.046021222 -32.237253 49.870228 6534.1594 1.8903282e+10 0.15780138 0.047989143 -32.359458 49.757423 6536.7743 1.7428536e+10 0.15916552 0.048483246 -32.478022 49.647977 6539.3891 1.6189654e+10 0.16072906 0.050114654 -32.596597 49.538524 6542.0040 1.4957704e+10 0.16131378 0.051003755 -32.715180 49.429065 6544.6189 1.3753256e+10 0.16192364 0.052146385 -32.833756 49.317929 6547.2337 1.2608889e+10 0.16236263 0.053376251 -32.952320 49.203923 6549.8486 1.1548519e+10 0.16248081 0.054831081 -33.070082 49.090721 6552.4635 1.0660506e+10 0.16173746 0.055470109 -33.184088 48.981275 6555.0784 9.8581319e+09 0.16020896 0.054787530 -33.298093 48.871829 6557.6932 9.0243725e+09 0.15785944 0.053431593 -33.426113 48.748931 6560.3081 8.2187385e+09 0.15520666 0.051996522 -33.553730 48.626270 6562.9230 7.4962623e+09 0.15257870 0.050001668 -33.663191 48.516809 6565.5378 6.9119141e+09 0.15025022 0.047707677 -33.772652 48.407349 6568.1527 6.4446351e+09 0.14874141 0.045631287 -33.882098 48.294064 6570.7676 6.0046592e+09 0.14743839 0.044599552 -33.991543 48.180058 6573.3825 5.5919668e+09 0.14592157 0.043350575 -34.100988 48.069011 6575.9973 5.2012177e+09 0.14393919 0.041374082 -34.210434 47.959567 6578.6122 4.8157546e+09 0.14179744 0.037682891 -34.326115 47.843886 6581.2271 4.4301720e+09 0.13976034 0.035527851 -34.449242 47.720757 6583.8419 4.0824319e+09 0.13806191 0.034595517 -34.563129 47.602250 6586.4568 3.7911470e+09 0.13629280 0.033165391 -34.668016 47.488244 6589.0717 3.5567040e+09 0.13439871 0.032903777 -34.774336 47.375665 6591.6865 3.3713915e+09 0.13159857 0.028427221 -34.883795 47.266204 6594.3014 3.1901485e+09 0.12865607 0.026007059 -34.993667 47.155089 6596.9163 2.9979495e+09 0.12535681 0.025723108 -35.106534 47.031962 6599.5312 2.7998622e+09 0.12328649 0.024961677 -35.218030 46.910403 6602.1460 2.6143635e+09 0.12230452 0.027392015 -35.322915 46.796398 6604.7609 2.4615887e+09 0.12023282 0.026523076 -35.427800 46.682392 6607.3758 2.3313370e+09 0.11754999 0.024964981 -35.528221 46.572850 6609.9906 2.2132444e+09 0.11299110 0.024000200 -35.628546 46.463404 6612.6055 2.1032710e+09 0.10986091 0.023868333 -35.728881 46.353948 6615.2204 2.0058336e+09 0.10818000 0.023258312 -35.829218 46.244490 6617.8353 1.9021369e+09 0.10720645 0.023716177 -35.936992 46.123872 6620.4501 1.7935135e+09 0.10670063 0.024912252 -36.049860 45.995614 6623.0650 1.6902205e+09 0.10534666 0.024515908 -36.154646 45.879478 6625.6799 1.5949783e+09 0.10394660 0.026208897 -36.254971 45.770032 6628.2947 1.5150378e+09 0.10209528 0.025822764 -36.353237 45.658527 6630.9096 1.4453027e+09 0.10018790 0.025930543 -36.449002 45.544522 6633.5245 1.3765371e+09 0.098495115 0.026243823 -36.547862 45.428158 6636.1394 1.3050683e+09 0.096633042 0.026495635 -36.655598 45.305031 6638.7542 1.2353457e+09 0.095256180 0.025638783 -36.759634 45.186133 6641.3691 1.1668483e+09 0.095654960 0.025149554 -36.855411 45.076672 6643.9840 1.1082279e+09 0.094393002 0.025341186 -36.952586 44.965015 6646.5988 1.0531650e+09 0.092907439 0.026230127 -37.060324 44.836757 6649.2137 9.9415785e+08 0.091293940 0.027339094 -37.165291 44.711652 6651.8286 9.4119262e+08 0.090469537 0.027119156 -37.256493 44.602208 6654.4435 8.9396383e+08 0.089099533 0.027847309 -37.347696 44.492764 6657.0583 8.4792024e+08 0.086455746 0.028968768 -37.450015 44.364981 6659.6732 8.0240483e+08 0.084306725 0.031694169 -37.552331 44.237204 6662.2881 7.5767346e+08 0.082161169 0.032882648 -37.643536 44.127757 6664.9029 7.2184352e+08 0.080651852 0.028902269 -37.734741 44.018311 6667.5178 6.9016031e+08 0.079515001 0.027293659 -37.835440 43.893200 6670.1327 6.5487611e+08 0.078410166 0.027267163 -37.938047 43.764942 6672.7476 6.2332937e+08 0.077891420 0.027312895 -38.026560 43.653292 6675.3624 5.9114817e+08 0.076028490 0.030492533 -38.113215 43.543831 6677.9773 5.6429740e+08 0.074420081 0.030968890 -38.210892 43.421383 6680.5922 5.3652165e+08 0.074907553 0.029569290 -38.313498 43.293125 6683.2070 5.0754638e+08 0.075733071 0.031491998 -38.404265 43.178822 6685.8219 4.8515876e+08 0.075270177 0.033572976 -38.490908 43.069378 6688.4368 4.6184051e+08 0.072270724 0.033886014 -38.583498 42.952423 6691.0517 4.4096703e+08 0.070566162 0.032989076 -38.680976 42.829293 6693.6665 4.1763422e+08 0.069436397 0.031375430 -38.769223 42.711635 6696.2814 3.9680065e+08 0.069052849 0.029792699 -38.851307 42.597630 6698.8963 3.8018183e+08 0.067612651 0.031448044 -38.939658 42.479907 6701.5111 3.6122870e+08 0.065481207 0.032159428 -39.037148 42.356762 6704.1260 3.4302155e+08 0.065499302 0.036239429 -39.132282 42.231276 6706.7409 3.2404758e+08 0.065286742 0.039735845 -39.224628 42.103018 6709.3557 3.0983026e+08 0.064359693 0.040906269 -39.311755 41.984328 6711.9706 2.9724297e+08 0.061849617 0.041796533 -39.393839 41.874882 6714.5855 2.8495591e+08 0.059294092 0.047347426 -39.479164 41.759495 6717.2004 2.7154025e+08 0.056799620 0.049861875 -39.571510 41.631237 6719.8152 2.5716583e+08 0.054829415 0.050595307 -39.663856 41.504860 6722.4301 2.4369530e+08 0.054491695 0.050073482 -39.756202 41.381733 6725.0450 2.3348456e+08 0.049776449 0.041547926 -39.846406 41.256465 6727.6598 2.2457433e+08 0.048210695 0.040081280 -39.933621 41.128206 6730.2747 2.1338259e+08 0.046811692 0.040755575 -40.023238 41.002350 6732.8896 2.0019419e+08 0.045321725 0.043903979 -40.115585 40.879220 6735.5045 1.8786965e+08 0.045930786 0.049828955 -40.200243 40.763187 6738.1193 1.7823820e+08 0.047665055 0.057978069 -40.277778 40.653728 6740.7342 1.7159201e+08 0.046950230 0.065304622 -40.358473 40.538132 6743.3491 1.6580836e+08 0.042550573 0.073402286 -40.445687 40.409874 6745.9639 1.5717127e+08 0.040026009 0.078972121 -40.532902 40.283551 6748.5788 1.5141229e+08 0.035862822 0.070062074 -40.620116 40.160423 6751.1937 1.4365293e+08 0.032501218 0.073793563 -40.707332 40.035098 6753.8086 1.3539158e+08 0.029675958 0.075593934 -40.794548 39.906840 6756.4234 1.2783904e+08 0.026640462 0.075256457 -40.879308 39.781038 6759.0383 1.2142779e+08 0.026878659 0.075829197 -40.961394 39.657909 6761.6532 1.1609960e+08 0.029404723 0.078022190 -41.046196 39.532063 6764.2680 1.1184291e+08 0.033711155 0.079496127 -41.133410 39.403805 6766.8829 1.0643290e+08 0.034322569 0.081710916 -41.217648 39.278525 6769.4978 1.0308552e+08 0.028671391 0.085661610 -41.299736 39.155399 6772.1127 99066392. 0.023825358 0.092003822 -41.389225 39.021165 6774.7275 92351085. 0.018951874 0.098346035 -41.483039 38.880443 6777.3424 86321720. 0.014069398 0.10468825 -41.565995 38.751259 6779.9573 79040891. 0.0091373089 0.11103046 -41.648081 38.623000 6782.5721 76247979. 0.0042954717 0.11737267 -41.730166 38.499754 6785.1870 73892917. -0.00050398628 0.12371488 -41.812251 38.376626 6787.8019 72333419. -0.0052403281 0.13005710 -41.894349 38.253479 6790.4168 71631076. -0.0099098685 0.13639931 -41.976042 38.129931 6793.0316 68848474. -0.014647677 0.14274152 -42.052996 38.001673 6795.6465 69463228. -0.019252643 0.14908373 -42.131371 37.871804 6798.2614 65894982. -0.024048612 0.15542594 -42.219323 37.731084 6800.8762 61484141. -0.028927687 0.16176816 -42.304788 37.595646 6803.4911 56437548. -0.033917031 0.16811037 -42.386874 37.467387 6806.1060 54588052. -0.038755005 0.17445258 -42.471743 37.333213 6808.7209 57544529. -0.043254593 0.18079479 -42.559694 37.192492 6811.3357 58233375. -0.047980945 0.18713700 -42.639187 37.065301 6813.9506 58330613. -0.052833895 0.19347922 -42.716141 36.942172 6816.5655 53370250. -0.058316115 0.19982143 -42.802112 36.799813 6819.1803 51896658. -0.063744951 0.20616364 -42.888218 36.655912 6821.7952 50337725. -0.069642058 0.21250585 -42.960042 36.532786 6824.4101 46971989. -0.076832800 0.21884807 -43.034530 36.406752 6827.0250 46339247. -0.086102397 0.22519028 -43.122480 36.266030 6829.6398 44272363. -0.11906197 0.23153249 -43.203017 36.133396 6832.2547 43524328. -0.10080002 0.23787470 -43.274843 36.010270 6834.8696 41967038. -0.053857899 0.24421691 -43.354900 35.875168