# # 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 = 50.389216 km # Date (UTC) = 2016-01-20T10:32:42.521 # Date (julian) = 2457407.93938103 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.7384 6.7115492e+10 0.046154723 0.032505870 96.209798 41.534445 6503.0058 6.1670962e+10 0.055519161 0.033189597 96.296229 41.392088 6505.2732 5.6442793e+10 0.065148238 0.033873323 96.385169 41.249731 6507.5406 5.1933805e+10 0.075195162 0.034557050 96.476686 41.107373 6509.8080 4.8045054e+10 0.085723773 0.035240776 96.565525 40.965015 6512.0754 4.4410134e+10 0.096687405 0.035924503 96.651959 40.822656 6514.3428 4.0975833e+10 0.10807617 0.036608229 96.735544 40.680298 6516.6101 3.7695111e+10 0.11986306 0.037291955 96.816890 40.537941 6518.8775 3.4518694e+10 0.13199679 0.037975682 96.901251 40.395584 6521.1449 3.1606629e+10 0.14454429 0.038659408 96.987681 40.253227 6523.4123 2.9153010e+10 0.15358108 0.039281307 97.070930 40.110868 6525.6797 2.6986985e+10 0.15990586 0.039704640 97.152279 39.968510 6527.9471 2.4741094e+10 0.16605578 0.041404088 97.246476 39.810507 6530.2145 2.2471511e+10 0.17099218 0.044129003 97.347315 39.644419 6532.4819 2.0313689e+10 0.17484813 0.047086769 97.429183 39.501430 6534.7493 1.8506696e+10 0.17705264 0.048154164 97.510532 39.359073 6537.0167 1.7038069e+10 0.17796708 0.048693094 97.591877 39.216717 6539.2841 1.5664767e+10 0.17772867 0.049987501 97.673021 39.074359 6541.5515 1.4413378e+10 0.17618512 0.051147690 97.749285 38.932000 6543.8189 1.3271895e+10 0.17374684 0.051596809 97.825919 38.789641 6546.0863 1.2241095e+10 0.17104700 0.052535505 97.907268 38.647284 6548.3537 1.1287378e+10 0.16929511 0.053773259 97.988078 38.504927 6550.6210 1.0405473e+10 0.16725950 0.055140864 98.064338 38.362570 6552.8884 9.5843518e+09 0.16545829 0.055363147 98.141305 38.220213 6555.1558 8.8110052e+09 0.16334221 0.054722427 98.222655 38.077853 6557.4232 8.1162568e+09 0.16093274 0.053600827 98.301487 37.938558 6559.6906 7.5642626e+09 0.15821031 0.052309230 98.368217 37.813998 6561.9580 7.1083543e+09 0.15524167 0.050900593 98.434946 37.689439 6564.2254 6.7044813e+09 0.15199514 0.048669443 98.510484 37.548430 6566.4928 6.3046863e+09 0.14959635 0.046904109 98.586744 37.406072 6568.7602 5.8877170e+09 0.14741285 0.045072864 98.663008 37.263714 6571.0276 5.4937238e+09 0.14551055 0.044495741 98.739272 37.121355 6573.2950 5.1251870e+09 0.14328794 0.043420767 98.810499 36.978998 6575.5624 4.7699679e+09 0.14067663 0.041810471 98.881797 36.836641 6577.8298 4.4553758e+09 0.13779446 0.038917011 98.958061 36.694283 6580.0972 4.1783844e+09 0.13467873 0.036430964 99.034037 36.551926 6582.3646 3.9233433e+09 0.13162136 0.035194590 99.105215 36.409567 6584.6319 3.6928764e+09 0.12858441 0.034171266 99.176394 36.267665 6586.8993 3.4733238e+09 0.12554823 0.033159671 99.247572 36.130391 6589.1667 3.2656238e+09 0.12236849 0.032715195 99.318751 35.992492 6591.4341 3.0694434e+09 0.11888495 0.028712050 99.389929 35.850135 6593.7015 2.8976652e+09 0.11594070 0.026450021 99.461108 35.707778 6595.9689 2.7316473e+09 0.11294603 0.025724050 99.532286 35.565421 6598.2363 2.5787108e+09 0.11124868 0.025294345 99.601782 35.426431 6600.5037 2.4604460e+09 0.11081549 0.026025386 99.664065 35.301869 6602.7711 2.3513099e+09 0.11001862 0.026858614 99.726349 35.177308 6605.0385 2.2496069e+09 0.10920849 0.026697329 99.797005 35.035995 6607.3059 2.1371596e+09 0.10778176 0.025103000 99.868184 34.893638 6609.5733 2.0171244e+09 0.10479010 0.023876220 99.939362 34.751281 6611.8407 1.9055286e+09 0.10227913 0.024422360 100.01049 34.608972 6614.1081 1.8047681e+09 0.10128984 0.023866044 100.07660 34.471688 6616.3755 1.7053504e+09 0.099827801 0.023341226 100.14269 34.334207 6618.6428 1.6096733e+09 0.099175114 0.024256220 100.20878 34.191850 6620.9102 1.5241323e+09 0.098327776 0.025060521 100.27525 34.049493 6623.1776 1.4327718e+09 0.096797444 0.024557636 100.34643 33.907134 6625.4450 1.3468921e+09 0.095390540 0.025928652 100.41619 33.766678 6627.7124 1.2739804e+09 0.093417228 0.025592006 100.47402 33.642118 6629.9798 1.2189020e+09 0.091908241 0.025931952 100.53185 33.517559 6632.2472 1.1728708e+09 0.089834701 0.026061987 100.59678 33.382077 6634.5146 1.1296193e+09 0.088029245 0.026364380 100.66287 33.244804 6636.7820 1.0738763e+09 0.086252890 0.026246074 100.72443 33.102995 6639.0494 1.0190903e+09 0.084876409 0.025610424 100.78544 32.960638 6641.3168 9.6872312e+08 0.085264707 0.025149376 100.85116 32.818278 6643.5842 9.1793080e+08 0.084400898 0.025280821 100.91725 32.675919 6645.8516 8.7315687e+08 0.083368999 0.025850610 100.98335 32.538435 6648.1190 8.2600320e+08 0.082555098 0.027043915 101.04944 32.401164 6650.3864 7.8154471e+08 0.082111206 0.026343684 101.11049 32.258848 6652.6537 7.3806865e+08 0.081913263 0.027430392 101.17142 32.116928 6654.9211 7.0384067e+08 0.080998256 0.027643813 101.22926 31.992368 6657.1885 6.7694530e+08 0.079156202 0.029119800 101.28709 31.867808 6659.4559 6.5363443e+08 0.077690529 0.031739492 101.34739 31.733373 6661.7233 6.2938168e+08 0.076290602 0.032903350 101.40840 31.596100 6663.9907 5.9690909e+08 0.074946012 0.032208663 101.46941 31.454708 6666.2581 5.6678518e+08 0.075092074 0.026958890 101.53042 31.312351 6668.5255 5.3395122e+08 0.074162238 0.027935801 101.59143 31.174279 6670.7929 5.0379718e+08 0.074019902 0.026961299 101.65245 31.037005 6673.0603 4.7583127e+08 0.073671670 0.027549375 101.71345 30.895277 6675.3277 4.4900811e+08 0.071871590 0.030425977 101.77446 30.752919 6677.5951 4.2718773e+08 0.070111728 0.031512265 101.83547 30.615184 6679.8625 4.0164368e+08 0.070143977 0.029555071 101.89649 30.477910 6682.1299 3.8011052e+08 0.070897740 0.030523758 101.95031 30.352618 6684.3972 3.6196979e+08 0.070948747 0.032674250 102.00369 30.228058 6686.6646 3.4648792e+08 0.069603019 0.034147784 102.06237 30.094669 6688.9320 3.3341730e+08 0.066500618 0.034000336 102.12338 29.957394 6691.1994 3.2055597e+08 0.065369036 0.032954211 102.18069 29.816421 6693.4668 3.1031922e+08 0.064323559 0.031443940 102.23662 29.674063 6695.7342 2.9759884e+08 0.063969393 0.029724607 102.29641 29.535574 6698.0016 2.8374527e+08 0.063275896 0.030220025 102.35742 29.398301 6700.2690 2.7168187e+08 0.061630019 0.030867245 102.41440 29.261028 6702.5364 2.5781984e+08 0.060575871 0.033305044 102.47033 29.123754 6704.8038 2.4928670e+08 0.060918501 0.036572256 102.53045 28.982296 6707.0712 2.4219620e+08 0.060602186 0.040176629 102.59144 28.839962 6709.3386 2.3306021e+08 0.059901940 0.040917193 102.64808 28.701978 6711.6060 2.2396506e+08 0.057928978 0.041381659 102.70401 28.564704 6713.8734 2.1202066e+08 0.055712912 0.046845385 102.75993 28.427431 6716.1408 2.0243932e+08 0.053893310 0.048608679 102.81586 28.290158 6718.4081 1.9425877e+08 0.051578321 0.050448074 102.87179 28.148177 6720.6755 1.8521935e+08 0.051217706 0.050341493 102.92771 28.005819 6722.9429 1.7370668e+08 0.050418995 0.049439492 102.98364 27.868337 6725.2103 1.6496608e+08 0.046100193 0.041444638 103.03957 27.731064 6727.4777 1.5925064e+08 0.044738554 0.040323925 103.09549 27.593790 6729.7451 1.5486467e+08 0.043768750 0.040548790 103.15142 27.456388 6732.0125 1.4954252e+08 0.041946196 0.043742512 103.20735 27.314030 6734.2799 1.4217406e+08 0.041195691 0.049336759 103.26327 27.171969 6736.5473 1.3402368e+08 0.042998994 0.052424084 103.31920 27.034696 6738.8147 1.2570850e+08 0.043939991 0.061806320 103.37466 26.897422 6741.0821 1.1888122e+08 0.042796654 0.065992789 103.42550 26.760148 6743.3495 1.1421323e+08 0.038755067 0.073404982 103.47698 26.622875 6745.6169 1.1354273e+08 0.036441272 0.078826212 103.53290 26.485602 6747.8843 1.0974647e+08 0.032373911 0.067056744 103.58883 26.348329 6750.1517 1.0097539e+08 0.029845132 0.072263087 103.64476 26.211056 6752.4190 94398778. 0.027210673 0.073649561 103.69971 26.073782 6754.6864 90173691. 0.025869058 0.075109589 103.75055 25.936509 6756.9538 90768808. 0.023263202 0.076621263 103.80140 25.799235 6759.2212 90367895. 0.024524236 0.075873340 103.85224 25.661960 6761.4886 85476973. 0.026672449 0.078008594 103.90439 25.523378 6763.7560 82221783. 0.031274180 0.078740219 103.96031 25.381021 6766.0234 79580594. 0.033407715 0.079766693 104.01476 25.240140 6768.2908 75139037. 0.030072233 0.081902391 104.06560 25.102867 6770.5582 70139256. 0.025608728 0.088233564 104.11645 24.965593 6772.8256 65663504. 0.021630316 0.093732989 104.16729 24.828320 6775.0930 61283056. 0.017622926 0.099232415 104.21813 24.691046 6777.3604 61376909. 0.013641849 0.10473184 104.26897 24.553772 6779.6278 58876636. 0.0095472215 0.11023127 104.32312 24.407580 6781.8952 57325300. 0.0053672426 0.11573069 104.38244 24.247423 6784.1626 58349147. 0.0011026435 0.12123012 104.43579 24.106952 6786.4299 57258020. -0.0034644129 0.12672954 104.48663 23.974763 6788.6973 55550852. -0.0085031167 0.13222897 104.53747 23.838827 6790.9647 50065466. -0.015492381 0.13772839 104.58831 23.701553 6793.2321 45200285. -0.036234704 0.14322782 104.63915 23.564279 6795.4995 45098146. -0.027510445 0.14872724 104.68999 23.427006 6797.7669 48565075. -0.0045584568 0.15422667 104.74765 23.271351