# # 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 = 46.503083 km # Date (UTC) = 2016-01-01T10:23:53.769 # Date (julian) = 2457388.93326121 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.7009 1.0457457e+11 0.020581095 0.030383734 100.35700 31.392222 6495.7046 9.5773549e+10 0.026853273 0.030987929 100.40592 31.297877 6497.7082 8.7064062e+10 0.033259250 0.031592125 100.45805 31.200317 6499.7119 7.9912271e+10 0.039996366 0.032196320 100.51047 31.102464 6501.7155 7.2660876e+10 0.046979767 0.032800516 100.56303 31.004154 6503.7192 6.5455022e+10 0.054239032 0.033404711 100.61806 30.898013 6505.7228 5.8916063e+10 0.061935245 0.034008907 100.67310 30.791873 6507.7265 5.2911049e+10 0.070111744 0.034613102 100.72501 30.691763 6509.7301 4.8166495e+10 0.079100435 0.035217298 100.77393 30.597417 6511.7338 4.4520838e+10 0.089051490 0.035821493 100.82285 30.503072 6513.7374 4.1458484e+10 0.099885747 0.036425688 100.87177 30.406457 6515.7411 3.8948472e+10 0.11165939 0.037029884 100.92069 30.308617 6517.7447 3.6688299e+10 0.12420694 0.037634079 100.96961 30.210778 6519.7484 3.4363849e+10 0.13725098 0.038238275 101.02335 30.106400 6521.7520 3.1892019e+10 0.15060802 0.038842470 101.07839 30.000260 6523.7557 2.9342623e+10 0.15906048 0.039366401 101.13108 29.896992 6525.7593 2.7050515e+10 0.16622840 0.039695556 101.17651 29.802634 6527.7630 2.5055263e+10 0.17346469 0.041270391 101.22194 29.708276 6529.7666 2.3371996e+10 0.17854737 0.043456930 101.26871 29.613923 6531.7703 2.1859205e+10 0.18136286 0.046349805 101.31763 29.519577 6533.7739 2.0401963e+10 0.18193193 0.047848477 101.36655 29.425232 6535.7776 1.9059384e+10 0.18047032 0.047886993 101.41547 29.330886 6537.7812 1.7861919e+10 0.18025061 0.049053533 101.46438 29.236541 6539.7849 1.6721658e+10 0.17923970 0.050593686 101.51330 29.142197 6541.7885 1.5602022e+10 0.17669537 0.051070820 101.56366 29.040081 6543.7922 1.4422204e+10 0.17439693 0.051589801 101.61477 28.933941 6545.7958 1.3257990e+10 0.17231730 0.052462697 101.66522 28.829156 6547.7995 1.2242294e+10 0.17097218 0.053591387 101.71065 28.734810 6549.8031 1.1366426e+10 0.16935323 0.054784720 101.75607 28.640465 6551.8068 1.0619445e+10 0.16747034 0.055518939 101.80150 28.545231 6553.8104 9.9292461e+09 0.16509626 0.054927681 101.84693 28.447379 6555.8141 9.3159245e+09 0.16283212 0.054169353 101.89236 28.349527 6557.8177 8.7438945e+09 0.16080548 0.053353559 101.94155 28.248428 6559.8214 8.1484743e+09 0.15816583 0.052294472 101.99659 28.142287 6561.8250 7.5565948e+09 0.15517251 0.050966130 102.05163 28.036147 6563.8287 7.0193534e+09 0.15199259 0.048969787 102.09851 27.940007 6565.8323 6.5819396e+09 0.14930280 0.047373287 102.14394 27.845661 6567.8360 6.2344543e+09 0.14703691 0.045910353 102.18936 27.751315 6569.8396 5.9207348e+09 0.14461525 0.044907071 102.23135 27.656970 6571.8433 5.6229335e+09 0.14185713 0.044272961 102.27328 27.562624 6573.8469 5.3382350e+09 0.13864046 0.042977847 102.31564 27.468712 6575.8506 5.0655626e+09 0.13597823 0.041521317 102.36108 27.377848 6577.8542 4.8055267e+09 0.13361074 0.038878595 102.40651 27.286985 6579.8579 4.5613286e+09 0.13137326 0.036598886 102.45343 27.192107 6581.8615 4.3068515e+09 0.12932582 0.035335728 102.50454 27.085967 6583.8652 4.0671535e+09 0.12738861 0.034583754 102.55564 26.979827 6585.8688 3.8340978e+09 0.12561482 0.033276168 102.60266 26.882167 6587.8725 3.6326487e+09 0.12430007 0.033351676 102.64808 26.787821 6589.8761 3.4573062e+09 0.12236457 0.031307824 102.69351 26.693476 6591.8798 3.2909485e+09 0.11997032 0.028209186 102.73594 26.599130 6593.8834 3.1547938e+09 0.11763001 0.026280902 102.77787 26.504785 6595.8871 3.0159022e+09 0.11493993 0.025715563 102.81983 26.410387 6597.8907 2.8742059e+09 0.11302204 0.025441648 102.86695 26.304353 6599.8944 2.7167992e+09 0.11209045 0.024983522 102.91413 26.198213 6601.8980 2.5567934e+09 0.11155710 0.027468610 102.96052 26.097393 6603.9017 2.4247132e+09 0.10994553 0.026129483 103.00595 26.003035 6605.9053 2.3117528e+09 0.10938543 0.027424542 103.05138 25.908678 6607.9090 2.2054745e+09 0.10712970 0.023912103 103.09784 25.807367 6609.9126 2.0859916e+09 0.10415588 0.023977026 103.14501 25.701227 6611.9163 1.9662106e+09 0.10165082 0.024374140 103.19194 25.595794 6613.9199 1.8579859e+09 0.10050687 0.023911115 103.23387 25.504943 6615.9236 1.7681402e+09 0.098732764 0.023279948 103.27580 25.414091 6617.9272 1.6932591e+09 0.097795836 0.023746670 103.31773 25.322595 6619.9309 1.6194521e+09 0.096950058 0.024750521 103.35967 25.228250 6621.9345 1.5540743e+09 0.095772502 0.024779692 103.40160 25.133904 6623.9382 1.4846772e+09 0.094167433 0.024839408 103.44522 25.035753 6625.9418 1.4148490e+09 0.093473894 0.026521494 103.49240 24.929612 6627.9455 1.3373347e+09 0.092165449 0.025682036 103.53957 24.823472 6629.9491 1.2707854e+09 0.091192203 0.025937498 103.58266 24.729240 6631.9528 1.2167713e+09 0.089698042 0.026027549 103.62459 24.638389 6633.9564 1.1692116e+09 0.088437222 0.026319237 103.66652 24.547539 6635.9601 1.1240310e+09 0.087153746 0.026543767 103.71327 24.442653 6637.9637 1.0654272e+09 0.086401064 0.025689403 103.76045 24.336496 6639.9674 1.0110568e+09 0.086371956 0.025282309 103.80567 24.234752 6641.9710 9.5920604e+08 0.086581086 0.025151598 103.84760 24.140406 6643.9747 9.1862472e+08 0.085600730 0.025339784 103.88953 24.046060 6645.9783 8.7999988e+08 0.084687931 0.025909999 103.93213 23.947690 6647.9820 8.3839854e+08 0.083816761 0.026954801 103.97537 23.845481 6649.9856 7.9512434e+08 0.083127769 0.026275033 104.01861 23.743271 6651.9893 7.5385318e+08 0.082583789 0.027242312 104.06059 23.648674 6653.9929 7.2525557e+08 0.081853578 0.028032621 104.10252 23.554329 6655.9966 7.0013999e+08 0.080062682 0.028022009 104.14459 23.459148 6658.0002 6.7241262e+08 0.078666509 0.030061505 104.18783 23.356939 6660.0039 6.4047941e+08 0.077264764 0.031629534 104.23108 23.254730 6662.0075 6.0542512e+08 0.075826800 0.033040040 104.27358 23.156936 6664.0112 5.8030602e+08 0.074529625 0.032165138 104.31552 23.062578 6666.0148 5.5660905e+08 0.074760090 0.026911487 104.35746 22.968220 6668.0185 5.3326252e+08 0.074269944 0.027487140 104.40031 22.868359 6670.0221 5.1182217e+08 0.073933875 0.027318374 104.44356 22.766150 6672.0258 4.8587421e+08 0.073916945 0.026894550 104.48659 22.665725 6674.0294 4.7140975e+08 0.073269376 0.028979629 104.52852 22.574874 6676.0331 4.5445459e+08 0.071271500 0.031735053 104.57045 22.484023 6678.0367 4.4010163e+08 0.070476486 0.030912037 104.61277 22.388657 6680.0404 4.2399692e+08 0.070778401 0.029450139 104.65601 22.282516 6682.0440 4.0409872e+08 0.071581546 0.030458195 104.69925 22.176376 6684.0477 3.8496328e+08 0.071889571 0.032656512 104.73888 22.081725 6686.0513 3.6750274e+08 0.071451759 0.033790958 104.77732 21.990873 6688.0550 3.5339067e+08 0.069214814 0.033797886 104.81576 21.900022 6690.0586 3.4380199e+08 0.067418298 0.033109143 104.85847 21.799065 6692.0623 3.3321727e+08 0.066410169 0.032692986 104.90171 21.696856 6694.0659 3.1829112e+08 0.065554558 0.031168597 104.94496 21.593282 6696.0696 3.0496354e+08 0.065471003 0.029704702 104.98821 21.487126 6698.0732 2.8722585e+08 0.064747544 0.030318360 105.03146 21.380971 6700.0769 2.7362667e+08 0.063245385 0.030724757 105.07470 21.277982 6702.0806 2.5398643e+08 0.061786938 0.032941050 105.11794 21.175773 6704.0842 2.3895171e+08 0.062119142 0.036218900 105.15994 21.076501 6706.0879 2.3067880e+08 0.062006331 0.038599302 105.19838 20.985650 6708.0915 2.2548983e+08 0.061566587 0.040143219 105.23682 20.894799 6710.0952 2.2328467e+08 0.060320941 0.040515119 105.27716 20.799441 6712.0988 2.1485103e+08 0.058302946 0.042013401 105.32040 20.697231 6714.1025 2.0560217e+08 0.056301748 0.047311111 105.36365 20.595021 6716.1061 1.9624706e+08 0.054688590 0.048557640 105.40354 20.489458 6718.1098 1.8813128e+08 0.052663333 0.049983347 105.44285 20.383318 6720.1134 1.8059085e+08 0.051654618 0.050406627 105.48337 20.278393 6722.1171 1.7171425e+08 0.051516969 0.050460494 105.52662 20.176184 6724.1207 1.6447786e+08 0.049188750 0.048918698 105.56986 20.073974 6726.1244 1.5388538e+08 0.045574373 0.040952489 105.61310 19.971766 6728.1280 1.4556491e+08 0.044815340 0.039809526 105.65634 19.869557 6730.1317 1.4028321e+08 0.043329138 0.040559419 105.69775 19.769863 6732.1353 1.3326475e+08 0.041623281 0.043765119 105.73269 19.678999 6734.1390 1.2982476e+08 0.040618194 0.049345239 105.76764 19.588136 6736.1426 1.2647609e+08 0.042069688 0.050894142 105.80558 19.493185 6738.1463 1.2148894e+08 0.042979366 0.058126307 105.84882 19.390976 6740.1499 1.1961146e+08 0.042506025 0.064306454 105.89206 19.288767 6742.1536 1.1654789e+08 0.040085646 0.068984925 105.93209 19.186558 6744.1572 1.0674807e+08 0.035434262 0.077915009 105.97141 19.084348 6746.1609 1.0169680e+08 0.033688666 0.077117105 106.01072 18.982139 6748.1645 99271742. 0.030128682 0.067882393 106.05003 18.879930 6750.1682 94504566. 0.027214481 0.072291273 106.08934 18.777721 6752.1718 91175413. 0.024325534 0.073935659 106.13151 18.675511 6754.1755 86520974. 0.022986557 0.075931308 106.17476 18.573302 6756.1791 83150399. 0.020412669 0.074627790 106.21727 18.471093 6758.1828 81201199. 0.019978577 0.074091798 106.25658 18.368883 6760.1864 76848453. 0.020176166 0.076416752 106.29589 18.266673 6762.1901 72557094. 0.023588911 0.077744257 106.33881 18.155100 6764.1937 71251211. 0.025952535 0.079492566 106.38374 18.038287 6766.1974 70420872. 0.026627562 0.080160188 106.42633 17.929173 6768.2010 66192160. 0.021987489 0.081579323 106.46564 17.830895 6770.2047 61291583. 0.015039948 0.087376103 106.50496 17.732617 6772.2083 57780791. 0.0053666510 0.092235836 106.54769 17.630913 6774.2120 55559790. -0.032591303 0.097095569 106.59094 17.528704 6776.2156 52984450. -0.0082929569 0.10195530 106.63289 17.426490 6778.2193 50422074. 0.052825525 0.10681504 106.67221 17.324266