# # 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 = 42.588367 km # Date (UTC) = 2016-01-16T10:16:53.804 # Date (julian) = 2457403.92840051 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.4585 1.0396057e+11 0.030171414 0.030913734 -31.901688 52.881245 6497.5092 8.9059384e+10 0.036730793 0.031532104 -32.026913 52.770936 6499.5598 7.8136706e+10 0.043270393 0.032150473 -32.143607 52.670337 6501.6105 7.1147344e+10 0.050106551 0.032768843 -32.260385 52.569638 6503.6611 6.4943928e+10 0.057252193 0.033387212 -32.389083 52.454746 6505.7118 5.8858709e+10 0.064709040 0.034005582 -32.517834 52.339791 6507.7624 5.3109015e+10 0.072579521 0.034623952 -32.633259 52.233403 6509.8131 4.8810624e+10 0.081330755 0.035242321 -32.745913 52.128796 6511.8637 4.5571532e+10 0.091070110 0.035860691 -32.862503 52.020647 6513.9144 4.2132542e+10 0.10140987 0.036479060 -32.986654 51.905692 6515.9651 3.8386289e+10 0.11221428 0.037097430 -33.110806 51.790737 6518.0157 3.4380293e+10 0.12338368 0.037715799 -33.234958 51.675781 6520.0664 3.1030876e+10 0.13534329 0.038334169 -33.359072 51.560846 6522.1170 2.8451332e+10 0.14786097 0.038947894 -33.463857 51.456144 6524.1677 2.6386410e+10 0.15556452 0.039486528 -33.568463 51.351536 6526.2183 2.4509584e+10 0.16234609 0.039896982 -33.682985 51.241679 6528.2690 2.2577605e+10 0.16932975 0.041655871 -33.807137 51.126723 6530.3196 2.0709477e+10 0.17492074 0.044276189 -33.924789 51.015210 6532.3703 1.9082039e+10 0.17898991 0.046993535 -34.029397 50.910603 6534.4210 1.7673665e+10 0.18017463 0.048062314 -34.134005 50.805997 6536.4716 1.6255991e+10 0.17924549 0.048212460 -34.247378 50.688728 6538.5223 1.4794206e+10 0.17850694 0.049410995 -34.362333 50.569174 6540.5729 1.3460157e+10 0.17716529 0.051124763 -34.467626 50.462374 6542.6236 1.2412509e+10 0.17497108 0.051238980 -34.568210 50.361790 6544.6742 1.1551544e+10 0.17315425 0.052191293 -34.671479 50.257662 6546.7249 1.0704703e+10 0.17105560 0.053060986 -34.786434 50.138110 6548.7755 9.8273921e+09 0.16899369 0.053899248 -34.901210 50.018793 6550.8262 9.0253071e+09 0.16740395 0.055192231 -35.001800 49.918202 6552.8768 8.3676523e+09 0.16606370 0.055366065 -35.102384 49.817618 6554.9275 7.8321908e+09 0.16413141 0.054851843 -35.200848 49.714916 6556.9782 7.3565955e+09 0.16166842 0.053869318 -35.297408 49.610308 6559.0288 6.8973820e+09 0.15859054 0.052383930 -35.394534 49.505086 6561.0795 6.4111899e+09 0.15560450 0.051333522 -35.504892 49.385533 6563.1301 5.9048586e+09 0.15306471 0.049777847 -35.615249 49.265981 6565.1808 5.4488130e+09 0.15042540 0.048113124 -35.713653 49.162861 6567.2314 5.0815803e+09 0.14771650 0.046421507 -35.810213 49.062277 6569.2821 4.7654716e+09 0.14486025 0.044870784 -35.910276 48.954470 6571.3327 4.4489409e+09 0.14232273 0.044412397 -36.016035 48.834917 6573.3834 4.1224780e+09 0.13933292 0.043349816 -36.119069 48.718444 6575.4341 3.8375821e+09 0.13596108 0.041939218 -36.211607 48.613836 6577.4847 3.6167416e+09 0.13231442 0.039459017 -36.304146 48.509228 6579.5354 3.3995446e+09 0.12877235 0.036776186 -36.406210 48.393851 6581.5860 3.1664821e+09 0.12613454 0.035419155 -36.511969 48.274299 6583.6367 2.9351066e+09 0.12420703 0.034699412 -36.608314 48.162903 6585.6873 2.7350195e+09 0.12232067 0.033421272 -36.696827 48.058295 6587.7380 2.5724935e+09 0.12073580 0.033321878 -36.785340 47.953930 6589.7886 2.4300393e+09 0.11865184 0.031481396 -36.873854 47.853346 6591.8393 2.2989407e+09 0.11604844 0.028254869 -36.962368 47.752763 6593.8899 2.1660829e+09 0.11362180 0.026274841 -37.058152 47.641275 6595.9406 2.0280314e+09 0.11086186 0.025721114 -37.159313 47.521722 6597.9913 1.8889076e+09 0.10897965 0.025409925 -37.255419 47.408143 6600.0419 1.7550837e+09 0.10815474 0.025076036 -37.343945 47.303519 6602.0926 1.6471278e+09 0.10733438 0.027437642 -37.432471 47.198895 6604.1432 1.5670136e+09 0.10548861 0.026156316 -37.517306 47.094287 6606.1939 1.4949073e+09 0.10457039 0.027155575 -37.601797 46.989681 6608.2445 1.4214984e+09 0.10178885 0.023725906 -37.691472 46.878655 6610.2952 1.3360062e+09 0.098585389 0.024285022 -37.788034 46.759101 6612.3458 1.2524502e+09 0.096331315 0.024062353 -37.881521 46.644378 6614.3965 1.1790210e+09 0.094888580 0.023667323 -37.966011 46.543795 6616.4472 1.1236871e+09 0.092897973 0.023352479 -38.050501 46.443211 6618.4978 1.0649335e+09 0.091774802 0.024146698 -38.144277 46.328036 6620.5485 1.0050157e+09 0.090550194 0.024943938 -38.240839 46.208483 6622.5991 9.4700905e+08 0.088866611 0.024598528 -38.327834 46.097815 6624.6498 8.9298165e+08 0.087200666 0.025210128 -38.408301 45.993209 6626.7004 8.5082535e+08 0.085570105 0.025698497 -38.488768 45.888602 6628.7511 8.1229084e+08 0.084669253 0.026008041 -38.569235 45.783994 6630.8017 7.8098689e+08 0.083375532 0.025930277 -38.649703 45.679387 6632.8524 7.4435170e+08 0.082393392 0.026134554 -38.737338 45.565461 6634.9030 7.0321646e+08 0.081371170 0.026392715 -38.829303 45.445908 6636.9537 6.6223493e+08 0.080261135 0.026179392 -38.916108 45.333062 6639.0044 6.2850407e+08 0.079490175 0.025626518 -38.996576 45.228453 6641.0550 6.0168840e+08 0.080378379 0.025148487 -39.077043 45.123845 6643.1057 5.7460612e+08 0.080138386 0.025208573 -39.153634 45.019239 6645.1563 5.5103972e+08 0.079324101 0.025524914 -39.230077 44.914632 6647.2070 5.2477442e+08 0.078376866 0.026546753 -39.313936 44.802885 6649.2576 5.0047086e+08 0.077461111 0.027278557 -39.405900 44.683330 6651.3083 4.7712309e+08 0.077226444 0.026720421 -39.493162 44.568305 6653.3589 4.5313118e+08 0.076926078 0.027708923 -39.569605 44.463699 6655.4096 4.2985364e+08 0.075691819 0.027779462 -39.646048 44.359093 6657.4602 4.0842899e+08 0.074177191 0.029434986 -39.727661 44.246026 6659.5109 3.8375484e+08 0.072937021 0.031728023 -39.810429 44.131071 6661.5616 3.6249830e+08 0.071737119 0.032820964 -39.889132 44.022767 6663.6122 3.4063375e+08 0.070675000 0.032313553 -39.965575 43.918160 6665.6629 3.1826146e+08 0.070714236 0.027460995 -40.041386 43.813553 6667.7135 3.0487480e+08 0.070166457 0.027365548 -40.113806 43.708945 6669.7642 2.9339357e+08 0.069512091 0.027570837 -40.186227 43.604338 6671.8148 2.8632557e+08 0.069427021 0.026876961 -40.268687 43.489691 6673.8655 2.7098502e+08 0.069037191 0.028753621 -40.356054 43.370138 6675.9161 2.5668507e+08 0.067244972 0.031553110 -40.433998 43.258005 6677.9668 2.4656899e+08 0.066431890 0.030983812 -40.502405 43.153382 6680.0175 2.3725815e+08 0.066728583 0.029445185 -40.570986 43.048576 6682.0681 2.3085363e+08 0.067432456 0.030476581 -40.653735 42.929049 6684.1188 2.1699901e+08 0.067724964 0.032660119 -40.736488 42.809517 6686.1694 2.0608355e+08 0.067061494 0.033859655 -40.810605 42.702459 6688.2201 1.9756204e+08 0.064550869 0.033835991 -40.883037 42.597835 6690.2707 1.9062065e+08 0.062730273 0.033084838 -40.957486 42.487962 6692.3214 1.7862359e+08 0.061632909 0.032392125 -41.035654 42.368409 6694.3720 1.6590903e+08 0.060627665 0.030739594 -41.112095 42.251500 6696.4227 1.6473879e+08 0.059918815 0.029851406 -41.180493 42.146892 6698.4733 1.5760850e+08 0.058505506 0.030867543 -41.248890 42.042284 6700.5240 1.5293332e+08 0.056366612 0.031056387 -41.324043 41.927344 6702.5747 1.3835432e+08 0.054913794 0.033335598 -41.402212 41.807792 6704.6253 1.2579273e+08 0.054443212 0.036484616 -41.475333 41.698039 6706.6760 1.2313446e+08 0.053502836 0.039622876 -41.543730 41.597455 6708.7266 1.1696747e+08 0.052218839 0.040834846 -41.612432 41.496281 6710.7773 1.1174766e+08 0.049892824 0.040648638 -41.690601 41.376728 6712.8279 1.0414893e+08 0.046987955 0.043367156 -41.768770 41.257175 6714.8786 1.0007834e+08 0.044211098 0.047369461 -41.835125 41.150420 6716.9292 99011173. 0.041669446 0.049770051 -41.899499 41.045812 6718.9799 1.0029407e+08 0.039039032 0.051338533 -41.968989 40.935662 6721.0306 97809464. 0.038907740 0.050313105 -42.047159 40.816110 6723.0812 88792576. 0.036554431 0.049414236 -42.122624 40.699488 6725.1319 80704002. 0.030939329 0.041493651 -42.186998 40.594880 6727.1825 73839420. 0.027840933 0.040717219 -42.251371 40.490272 6729.2332 73861241. 0.026794318 0.040890011 -42.322280 40.375045 6731.2838 71457428. 0.023785845 0.042314897 -42.395852 40.255492 6733.3345 66925327. 0.020338912 0.045740316 -42.469423 40.135938 6735.3851 66267302. 0.018724333 0.049702285 -42.542995 40.016383 6737.4358 62373588. 0.014855365 0.055523797 -42.611793 39.903678 6739.4864 63199144. 0.0063847998 0.063421872 -42.672143 39.803095 6741.5371 62276769. -0.054244522 0.067290542 -42.732494 39.702511 6743.5878 57552783. -0.0099680938 0.075012443 -42.804421 39.585318 6745.6384 52633151. 0.10849988 0.078835270 -42.877992 39.465766