# # 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 = 50.374691 km # Date (UTC) = 2016-01-07T10:11:07.197 # Date (julian) = 2457394.92438885 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.9499 5.4978143e+10 0.021909203 0.030458821 103.17967 33.948056 6496.1752 5.1205589e+10 0.028660758 0.031129862 103.24768 33.828327 6498.4006 4.7253302e+10 0.035513804 0.031800903 103.31318 33.706076 6500.6259 4.3738283e+10 0.042636032 0.032471944 103.37719 33.586135 6502.8512 4.0779324e+10 0.050228886 0.033142985 103.43153 33.481339 6505.0765 3.8410908e+10 0.058502246 0.033814026 103.48587 33.376543 6507.3019 3.6252787e+10 0.067521440 0.034485067 103.54641 33.262044 6509.5272 3.4099476e+10 0.077304862 0.035156108 103.61190 33.139794 6511.7525 3.1711438e+10 0.087699057 0.035827149 103.67739 33.018702 6513.9778 2.9241772e+10 0.098767338 0.036498190 103.74288 32.900819 6516.2032 2.7008177e+10 0.11067039 0.037169231 103.80837 32.782936 6518.4285 2.5049788e+10 0.12350870 0.037840272 103.86298 32.674042 6520.6538 2.3525643e+10 0.13743731 0.038511313 103.91731 32.565378 6522.8791 2.2044997e+10 0.14957349 0.039147465 103.97609 32.453041 6525.1045 2.0540082e+10 0.15879377 0.039770292 104.04158 32.335158 6527.3298 1.8948449e+10 0.16616254 0.040955905 104.10660 32.217275 6529.5551 1.7382034e+10 0.17244331 0.043120042 104.16772 32.099391 6531.7804 1.5975849e+10 0.17776400 0.046364627 104.22885 31.981507 6534.0058 1.4710843e+10 0.18022540 0.047946172 104.28442 31.871161 6536.2311 1.3667906e+10 0.18004060 0.047997270 104.33875 31.762498 6538.4564 1.2730731e+10 0.17992415 0.049378935 104.39472 31.651610 6540.6817 1.1818812e+10 0.17816191 0.051176178 104.45585 31.533708 6542.9071 1.0886854e+10 0.17567500 0.051346614 104.51699 31.415807 6545.1324 9.9633398e+09 0.17367187 0.052456753 104.57811 31.297923 6547.3577 9.1369646e+09 0.17137976 0.053423401 104.63924 31.180039 6549.5831 8.4278361e+09 0.16926069 0.054560455 104.69332 31.068244 6551.8084 7.8713222e+09 0.16734696 0.055519504 104.74377 30.959580 6554.0337 7.3927467e+09 0.16467608 0.054833087 104.79511 30.850145 6556.2590 6.9356774e+09 0.16228093 0.053975044 104.85624 30.732262 6558.4844 6.4605034e+09 0.15986912 0.052826576 104.91736 30.614378 6560.7097 5.9567425e+09 0.15690076 0.051634442 104.97502 30.496495 6562.9350 5.5107604e+09 0.15418357 0.049990212 105.03178 30.378611 6565.1603 5.1104180e+09 0.15153911 0.048136340 105.08732 30.267314 6567.3857 4.8161098e+09 0.14894623 0.046291105 105.14165 30.162531 6569.6110 4.5835765e+09 0.14644345 0.044892190 105.19598 30.057747 6571.8363 4.3510837e+09 0.14398276 0.044274863 105.25257 29.936773 6574.0616 4.1121116e+09 0.14066539 0.042825403 105.30934 29.814506 6576.2870 3.8487450e+09 0.13764266 0.041041098 105.36610 29.695027 6578.5123 3.6052717e+09 0.13409747 0.037840658 105.42286 29.577143 6580.7376 3.3880365e+09 0.13046189 0.035839095 105.47743 29.463787 6582.9629 3.2036188e+09 0.12737709 0.035031753 105.52788 29.359003 6585.1883 3.0409083e+09 0.12441984 0.033820263 105.57833 29.254220 6587.4136 2.8844352e+09 0.12204949 0.033250004 105.63364 29.139364 6589.6389 2.7174716e+09 0.12002615 0.031778433 105.69040 29.021480 6591.8642 2.5411006e+09 0.11771809 0.028226718 105.74716 28.903597 6594.0896 2.3735644e+09 0.11551348 0.026123358 105.80391 28.785715 6596.3149 2.2185843e+09 0.11300436 0.025725842 105.85949 28.670296 6598.5402 2.0948635e+09 0.11117766 0.025149248 105.90994 28.565512 6600.7655 1.9958132e+09 0.11083098 0.026563684 105.96039 28.460728 6602.9909 1.9054887e+09 0.10981368 0.026671068 106.01471 28.347926 6605.2162 1.8137187e+09 0.10894317 0.026846411 106.07147 28.230025 6607.4415 1.7128421e+09 0.10731224 0.024835165 106.12683 28.112129 6609.6668 1.6096408e+09 0.10428480 0.023904015 106.17923 27.994246 6611.8922 1.5145422e+09 0.10173781 0.024389516 106.23156 27.876767 6614.1175 1.4362726e+09 0.10062121 0.023859543 106.28201 27.771984 6616.3428 1.3661175e+09 0.098960198 0.023336104 106.33246 27.667201 6618.5681 1.3098281e+09 0.098027499 0.024199813 106.38379 27.556469 6620.7935 1.2501932e+09 0.096978441 0.025022893 106.43619 27.438585 6623.0188 1.1814130e+09 0.095329711 0.024498790 106.48858 27.320702 6625.2441 1.1181980e+09 0.093656065 0.025688916 106.54097 27.202818 6627.4694 1.0563392e+09 0.091448529 0.025498151 106.59336 27.084934 6629.6948 9.9943110e+08 0.089948389 0.025983488 106.64575 26.967051 6631.9201 9.4888558e+08 0.087912058 0.026024229 106.69815 26.849168 6634.1454 9.0419180e+08 0.086302949 0.026337451 106.74941 26.738921 6636.3708 8.6315466e+08 0.084897986 0.026405775 106.79986 26.634138 6638.5961 8.2854507e+08 0.084024414 0.025645673 106.85033 26.529275 6640.8214 7.9100095e+08 0.084689187 0.025170152 106.90272 26.415766 6643.0467 7.5209189e+08 0.084575040 0.025199674 106.95513 26.302231 6645.2721 7.1049910e+08 0.083776000 0.025579131 107.00439 26.185583 6647.4974 6.7058883e+08 0.082873390 0.026699652 107.05242 26.067699 6649.7227 6.3239839e+08 0.082192208 0.026637475 107.10230 25.949816 6651.9480 5.9691944e+08 0.081878281 0.027210693 107.15470 25.831932 6654.1734 5.6468569e+08 0.081307668 0.027962375 107.20630 25.715822 6656.3987 5.3296459e+08 0.079625745 0.028373338 107.25287 25.611038 6658.6240 5.1084639e+08 0.078118284 0.031167767 107.29944 25.506255 6660.8493 4.9556248e+08 0.076666570 0.032398000 107.34926 25.394154 6663.0747 4.7928523e+08 0.075393463 0.032462523 107.40166 25.276271 6665.3000 4.5976804e+08 0.074822583 0.028055597 107.45288 25.159559 6667.5253 4.4115419e+08 0.074228721 0.027296413 107.50091 25.046041 6669.7506 4.1862027e+08 0.073430716 0.027584748 107.54894 24.932524 6671.9760 3.9856378e+08 0.073218046 0.026879257 107.60123 24.814738 6674.2013 3.7941388e+08 0.072256752 0.029124589 107.65362 24.696854 6676.4266 3.6044818e+08 0.069908360 0.031988673 107.70301 24.578959 6678.6519 3.4750948e+08 0.068896665 0.030500570 107.75105 24.461058 6680.8773 3.3231782e+08 0.069648949 0.029630854 107.80081 24.344899 6683.1026 3.1527520e+08 0.070308794 0.031338926 107.85321 24.231381 6685.3279 2.9958908e+08 0.070144747 0.033051196 107.90514 24.117397 6687.5532 2.8451280e+08 0.068284560 0.034034353 107.95316 23.999514 6689.7786 2.7317790e+08 0.066188585 0.033315190 108.00119 23.881631 6692.0039 2.6438936e+08 0.065254367 0.032760810 108.04922 23.767313 6694.2292 2.5501226e+08 0.064508944 0.030939767 108.09724 23.653795 6696.4545 2.4414272e+08 0.064428950 0.029864639 108.14527 23.537981 6698.6799 2.3395372e+08 0.063434486 0.031151014 108.19330 23.420098 6700.9052 2.2136436e+08 0.061756679 0.031339126 108.24132 23.303244 6703.1305 2.1109792e+08 0.061556190 0.034001835 108.28935 23.189726 6705.3558 2.0078728e+08 0.061798684 0.037301226 108.33737 23.076209 6707.5812 1.9077899e+08 0.061575806 0.040103574 108.38540 22.958564 6709.8065 1.8609978e+08 0.060642514 0.040619573 108.43342 22.840680 6712.0318 1.7885198e+08 0.058578156 0.041889041 108.48145 22.725656 6714.2571 1.7257586e+08 0.056509771 0.047322741 108.52948 22.612140 6716.4825 1.6548487e+08 0.054724477 0.049111998 108.57750 22.497032 6718.7078 1.6131640e+08 0.052384129 0.050914757 108.62553 22.379148 6720.9331 1.5478039e+08 0.052553015 0.050311647 108.67356 22.261587 6723.1584 1.5092433e+08 0.051456660 0.049457314 108.72159 22.148053 6725.3838 1.4647369e+08 0.047244902 0.041336294 108.76963 22.034519 6727.6091 1.3937991e+08 0.046097979 0.040148889 108.81765 21.920998 6729.8344 1.3306679e+08 0.045082883 0.040489261 108.86568 21.807481 6732.0598 1.2276901e+08 0.043444378 0.043751209 108.91155 21.691808 6734.2851 1.1524553e+08 0.042823539 0.049336447 108.95521 21.573924 6736.5104 1.1571164e+08 0.044630913 0.052284617 108.99976 21.456927 6738.7357 1.1264390e+08 0.045681188 0.061371619 109.04779 21.343410 6740.9611 1.0801532e+08 0.044772214 0.065692159 109.09581 21.229893 6743.1864 1.0405764e+08 0.041026985 0.072304757 109.13985 21.116375 6745.4117 94875192. 0.038346307 0.078739964 109.18351 21.002858 6747.6370 93794176. 0.034038789 0.067141856 109.23416 20.876140 6749.8624 90076650. 0.031903536 0.072041819 109.28905 20.741414 6752.0877 82954728. 0.028898542 0.074033011 109.33700 20.619803 6754.3130 78928464. 0.027696648 0.075710114 109.38066 20.506286 6756.5383 74092288. 0.025044478 0.075552122 109.42575 20.392769 6758.7637 69564377. 0.025446829 0.075320182 109.47378 20.279251 6760.9890 67599967. 0.025834338 0.077947221 109.52187 20.165123 6763.2143 59912426. 0.031324424 0.077090453 109.57177 20.035386 6765.4396 59395296. 0.033614688 0.079611450 109.62147 19.906194 6767.6650 57957147. 0.031858971 0.081231180 109.66513 19.792676 6769.8903 57397803. 0.026983955 0.086613600 109.70879 19.679159 6772.1156 56805326. 0.022816059 0.092010993 109.75245 19.565642 6774.3409 54010696. 0.018470638 0.097408386 109.79611 19.452125 6776.5663 56309708. 0.013382406 0.10280578 109.84259 19.331264 6778.7916 53300674. 0.0025241579 0.10820317 109.89249 19.201526 6781.0169 53025063. 0.0043258889 0.11360057 109.93959 19.079067 6783.2422 48600859. 0.012840225 0.11899796 109.98325 18.965551