# # 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 = 48.599801 km # Date (UTC) = 2016-01-25T09:31:57.738 # Date (julian) = 2457412.89719605 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.1629 5.7708035e+10 0.042629593 0.032332319 109.89329 45.924450 6502.3982 5.2915098e+10 0.051629151 0.033006377 110.00440 45.754862 6504.6335 4.9562944e+10 0.061227754 0.033680435 110.11551 45.588195 6506.8688 4.6344335e+10 0.071241438 0.034354493 110.22662 45.424455 6509.1042 4.3268854e+10 0.081713637 0.035028550 110.33773 45.260716 6511.3395 4.0242538e+10 0.092625759 0.035702608 110.44884 45.096980 6513.5748 3.7448200e+10 0.10404354 0.036376666 110.55992 44.933273 6515.8102 3.4708153e+10 0.11587903 0.037050724 110.66886 44.767395 6518.0455 3.2029243e+10 0.12812162 0.037724782 110.77412 44.597806 6520.2808 2.9642309e+10 0.14087687 0.038398839 110.87938 44.432071 6522.5162 2.7408379e+10 0.15261673 0.039052413 110.98464 44.268330 6524.7515 2.5190957e+10 0.16024776 0.039693930 111.08990 44.104591 6526.9868 2.3087549e+10 0.16654466 0.040702650 111.19517 43.940851 6529.2221 2.1049606e+10 0.17106805 0.042589646 111.30043 43.777111 6531.4575 1.9121475e+10 0.17552451 0.045894543 111.40569 43.610277 6533.6928 1.7434498e+10 0.17876645 0.047814009 111.51095 43.440689 6535.9281 1.5950458e+10 0.17909999 0.047821675 111.59979 43.295053 6538.1635 1.4708507e+10 0.18017197 0.049236281 111.68500 43.154709 6540.3988 1.3591077e+10 0.17909604 0.051042504 111.78190 42.995113 6542.6341 1.2456305e+10 0.17620628 0.051242988 111.88129 42.830737 6544.8695 1.1376981e+10 0.17381775 0.052349668 111.98071 42.661151 6547.1048 1.0358357e+10 0.17128001 0.053327213 112.08012 42.493923 6549.3401 9.4378822e+09 0.16872243 0.054312886 112.17953 42.330182 6551.5754 8.6909063e+09 0.16671801 0.055437742 112.26909 42.182667 6553.8108 8.0888191e+09 0.16418355 0.054927501 112.35430 42.042322 6556.0461 7.5944838e+09 0.16143942 0.054006347 112.44535 41.885638 6558.2814 7.0766664e+09 0.15911904 0.052999487 112.53892 41.721899 6560.5168 6.5364683e+09 0.15608498 0.051808379 112.63826 41.552378 6562.7521 6.0421211e+09 0.15316523 0.050164257 112.73232 41.390931 6564.9874 5.6303062e+09 0.15041133 0.048324096 112.81252 41.250587 6567.2228 5.2783987e+09 0.14768618 0.046428842 112.89485 41.103614 6569.4581 4.9337394e+09 0.14524277 0.044882239 112.98257 40.939873 6571.6934 4.5671805e+09 0.14315340 0.044313890 113.07363 40.776151 6573.9287 4.2066117e+09 0.14033413 0.042912186 113.16717 40.612445 6576.1641 3.9214598e+09 0.13754048 0.041182541 113.24920 40.464571 6578.3994 3.6857988e+09 0.13427279 0.038018909 113.32940 40.319214 6580.6347 3.4702356e+09 0.13090053 0.035934167 113.41612 40.157904 6582.8701 3.2634349e+09 0.12795012 0.035057026 113.50186 39.997856 6585.1054 3.0773741e+09 0.12478216 0.033886513 113.57705 39.857513 6587.3407 2.9124179e+09 0.12151069 0.033233861 113.65427 39.713362 6589.5761 2.7536135e+09 0.11825291 0.031903140 113.74199 39.549620 6591.8114 2.5960126e+09 0.11486662 0.028286359 113.82404 39.396470 6594.0467 2.4464292e+09 0.11204777 0.026146881 113.89922 39.256126 6596.2820 2.3140244e+09 0.10929010 0.025725992 113.98014 39.102400 6598.5174 2.1844422e+09 0.10752478 0.025160153 114.06785 38.932812 6600.7527 2.0690709e+09 0.10730059 0.026537292 114.14620 38.785085 6602.9880 1.9676114e+09 0.10639926 0.026673486 114.22139 38.644741 6605.2234 1.8638472e+09 0.10568700 0.026852426 114.30160 38.486792 6607.4587 1.7579586e+09 0.10415380 0.024801251 114.38298 38.324046 6609.6940 1.6553455e+09 0.10119181 0.023912089 114.45315 38.183700 6611.9294 1.5658315e+09 0.098698963 0.024365804 114.52387 38.042248 6614.1647 1.4789005e+09 0.097728972 0.023827033 114.60573 37.878541 6616.4000 1.3972745e+09 0.096243659 0.023345081 114.68365 37.722707 6618.6353 1.3172956e+09 0.095577590 0.024250554 114.75382 37.582363 6620.8707 1.2469812e+09 0.094718234 0.025047770 114.82799 37.434020 6623.1060 1.1731972e+09 0.093202414 0.024531098 114.90986 37.270278 6625.3413 1.0998033e+09 0.091778872 0.025804914 114.98434 37.118152 6627.5767 1.0411178e+09 0.089736332 0.025539565 115.05451 36.972795 6629.8120 9.9263355e+08 0.088302141 0.025962294 115.12149 36.830630 6632.0473 9.5904267e+08 0.086199995 0.026038019 115.18665 36.690286 6634.2827 9.0859356e+08 0.084534487 0.026347461 115.26253 36.534930 6636.5180 8.5942217e+08 0.082816800 0.026348600 115.34440 36.371191 6638.7533 8.1318613e+08 0.081533431 0.025638823 115.41071 36.229247 6640.9886 7.6930227e+08 0.082038750 0.025149690 115.47587 36.088902 6643.2240 7.3495061e+08 0.081624984 0.025226435 115.55120 35.926645 6645.4593 6.9369779e+08 0.080879163 0.025666849 115.62476 35.768204 6647.6946 6.5802076e+08 0.080107190 0.026803505 115.68992 35.627860 6649.9300 6.2240953e+08 0.079611734 0.026351785 115.75508 35.487516 6652.1653 5.9821280e+08 0.079259622 0.027295999 115.82024 35.347172 6654.4006 5.7602175e+08 0.078582986 0.027865558 115.88797 35.201298 6656.6359 5.4726576e+08 0.076914031 0.028581586 115.96399 35.037557 6658.8713 5.1985425e+08 0.075513356 0.031606309 116.03430 34.886130 6661.1066 4.9167129e+08 0.074359952 0.032589247 116.09945 34.745786 6663.3419 4.6868333e+08 0.073242760 0.032388453 116.16727 34.593031 6665.5773 4.4839370e+08 0.073007125 0.027601256 116.23743 34.429323 6667.8126 4.2257971e+08 0.072557146 0.027401939 116.30349 34.284793 6670.0479 3.9989526e+08 0.072075436 0.027306429 116.36865 34.144447 6672.2833 3.8556831e+08 0.071813272 0.027043780 116.42967 34.004103 6674.5186 3.7217144e+08 0.070690856 0.029392254 116.48982 33.863759 6676.7539 3.5961864e+08 0.068391929 0.032199619 116.56315 33.703980 6678.9892 3.4381545e+08 0.067622622 0.030274963 116.63726 33.543064 6681.2246 3.2748824e+08 0.068744169 0.029829650 116.69741 33.402718 6683.4599 3.1083081e+08 0.069241871 0.031862579 116.75755 33.263002 6685.6952 2.9629503e+08 0.068817477 0.033439179 116.81770 33.127669 6687.9306 2.8543288e+08 0.066457703 0.033823914 116.87916 32.988628 6690.1659 2.7001845e+08 0.064538017 0.033096852 116.94933 32.824889 6692.4012 2.5584777e+08 0.063655386 0.032299409 117.01318 32.670987 6694.6366 2.4079777e+08 0.063123213 0.030368860 117.06832 32.530643 6696.8719 2.2711713e+08 0.062902248 0.030038036 117.12985 32.380346 6699.1072 2.1739456e+08 0.061727097 0.031491503 117.20003 32.216605 6701.3425 2.0634071e+08 0.060042792 0.031912058 117.26303 32.069601 6703.5779 1.9794586e+08 0.060095195 0.035121263 117.32317 31.929257 6705.8132 1.8854861e+08 0.060234407 0.038114321 117.37971 31.788913 6708.0485 1.8267293e+08 0.059924953 0.040096430 117.43484 31.648570 6710.2839 1.7557690e+08 0.058631770 0.040552058 117.50089 31.495499 6712.5192 1.6731200e+08 0.056526474 0.042793930 117.57084 31.337871 6714.7545 1.6164048e+08 0.054444806 0.047360134 117.62597 31.197527 6716.9899 1.5306460e+08 0.052393995 0.049859325 117.68129 31.056713 6719.2252 1.4719670e+08 0.050194052 0.051155897 117.74561 30.893006 6721.4605 1.3847151e+08 0.050562195 0.050442654 117.80708 30.738087 6723.6958 1.2696745e+08 0.048893005 0.049757028 117.86221 30.602755 6725.9312 1.1888229e+08 0.044818289 0.040994360 117.91735 30.465846 6728.1665 1.1150075e+08 0.044024374 0.039864090 117.97248 30.325501 6730.4018 1.0999144e+08 0.042474276 0.040929865 118.03056 30.177681 6732.6372 1.0876082e+08 0.040986730 0.043857509 118.09488 30.013942 6734.8725 1.0404056e+08 0.040806289 0.049301104 118.15361 29.867516 6737.1078 1.0370955e+08 0.042509934 0.054479037 118.20874 29.732182 6739.3432 98498062. 0.042992227 0.063246505 118.26952 29.579395 6741.5785 91617583. 0.041262015 0.067408557 118.33385 29.415655 6743.8138 89474869. 0.036693198 0.076537396 118.38986 29.273074 6746.0491 84191457. 0.035118846 0.078415945 118.44500 29.132730 6748.2845 83806120. 0.031332303 0.068513517 118.50317 28.976430 6750.5198 81688229. 0.028640511 0.072891714 118.56099 28.822034 6752.7551 73144141. 0.025777905 0.073260648 118.61613 28.681689 6754.9905 70472561. 0.024082661 0.074620685 118.67194 28.537762 6757.2258 67601740. 0.021620872 0.076054839 118.73042 28.379869 6759.4611 65732348. 0.022624752 0.075931231 118.78477 28.230648 6761.6965 64595976. 0.025277906 0.078025765 118.83489 28.090303 6763.9318 60275993. 0.028960971 0.079275523 118.89210 27.941217 6766.1671 59626863. 0.030419751 0.080091755 118.95641 27.783356 6768.4024 57315880. 0.026347698 0.082304101 119.00953 27.639310 6770.6378 55835696. 0.021230122 0.088426574 119.05965 27.498965 6772.8731 55386225. 0.016084152 0.093848232 119.11641 27.344695 6775.1084 50974181. 0.0085478595 0.099269889 119.17419 27.188271 6777.3438 48493058. -0.014872728 0.10469155 119.22431 27.047926 6779.5791 45540013. -0.0038084331 0.11011320 119.27517 26.906028 6781.8144 45428514. 0.028455915 0.11553486 119.33365 26.748135