# # 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 = 58.675961 km # Date (UTC) = 2015-01-08T10:36:34.635 # Date (julian) = 2457030.94206754 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.4550 7.3528094e+10 0.030986028 0.030611124 96.235527 35.427822 6496.9710 6.7042789e+10 0.039014590 0.031369809 96.309852 35.294264 6499.4869 6.0820849e+10 0.046979294 0.032128494 96.383897 35.160986 6502.0029 5.5273961e+10 0.055004752 0.032887179 96.454419 35.037269 6504.5189 5.0454727e+10 0.063291621 0.033645864 96.524624 34.914411 6507.0348 4.6039034e+10 0.072006166 0.034404549 96.597279 34.784898 6509.5508 4.1717845e+10 0.081209402 0.035163233 96.671320 34.651618 6512.0668 3.7662414e+10 0.091039381 0.035921918 96.745371 34.515302 6514.5828 3.4024664e+10 0.10166778 0.036680603 96.819427 34.377066 6517.0987 3.0693019e+10 0.11317161 0.037439288 96.893477 34.241740 6519.6147 2.7635432e+10 0.12560485 0.038197973 96.967522 34.108459 6522.1307 2.4867436e+10 0.13864480 0.038951472 97.041567 33.972408 6524.6467 2.2409230e+10 0.14638680 0.039656688 97.115612 33.834193 6527.1626 2.0278214e+10 0.15351180 0.040834541 97.189657 33.698621 6529.6786 1.8311617e+10 0.15982316 0.043316738 97.263703 33.565340 6532.1946 1.6509078e+10 0.16597166 0.046846738 97.335231 33.432060 6534.7105 1.4866326e+10 0.17019400 0.048143325 97.404339 33.298780 6537.2265 1.3467165e+10 0.17306740 0.048792021 97.471852 33.170544 6539.7425 1.2376278e+10 0.17482669 0.050542398 97.537666 33.047688 6542.2585 1.1455048e+10 0.17357419 0.051100366 97.604155 32.922696 6544.7744 1.0613115e+10 0.17181952 0.052272588 97.673267 32.789416 6547.2904 9.7718832e+09 0.16931957 0.053397803 97.742379 32.656133 6549.8064 8.9456709e+09 0.16721867 0.054788051 97.811497 32.522833 6552.3224 8.2237068e+09 0.16518666 0.055505629 97.880614 32.389536 6554.8383 7.5773340e+09 0.16297959 0.054849972 97.949722 32.256255 6557.3543 6.9986141e+09 0.16056504 0.053644028 98.018830 32.122345 6559.8703 6.4791912e+09 0.15801161 0.052288951 98.087937 31.984129 6562.3863 5.9990539e+09 0.15511809 0.050512372 98.157045 31.846417 6564.9022 5.5504022e+09 0.15271300 0.048362710 98.226153 31.713136 6567.4182 5.1391330e+09 0.15069309 0.046263592 98.294676 31.580983 6569.9342 4.7914470e+09 0.14922104 0.044913224 98.356104 31.462514 6572.4501 4.5085956e+09 0.14735996 0.043972371 98.417532 31.344045 6574.9661 4.2731375e+09 0.14510892 0.042390983 98.481146 31.213771 6577.4821 4.0386363e+09 0.14234134 0.039463129 98.545317 31.080490 6579.9981 3.7995663e+09 0.13953973 0.036521819 98.613295 30.947211 6582.5140 3.5619766e+09 0.13685917 0.035153912 98.682403 30.813932 6585.0300 3.3404061e+09 0.13438977 0.033946784 98.747833 30.676972 6587.5460 3.1343607e+09 0.13180200 0.033279338 98.812008 30.538756 6590.0620 2.9339149e+09 0.12899820 0.030946827 98.876186 30.404077 6592.5779 2.7516663e+09 0.12545130 0.027512184 98.940366 30.270777 6595.0939 2.5958593e+09 0.12191212 0.025633309 99.002636 30.147771 6597.6099 2.4712468e+09 0.11852711 0.025530275 99.064064 30.029302 6600.1258 2.3671894e+09 0.11727036 0.025248587 99.126632 29.904686 6602.6418 2.2582485e+09 0.11661615 0.026968932 99.190806 29.771407 6605.1578 2.1457570e+09 0.11599024 0.026797416 99.254979 29.638127 6607.6738 2.0316422e+09 0.11444249 0.024376567 99.319149 29.504847 6610.1897 1.9202547e+09 0.11138004 0.024184267 99.381527 29.371567 6612.7057 1.8156990e+09 0.10961769 0.023793473 99.440764 29.238287 6615.2217 1.7135892e+09 0.10856547 0.023258352 99.501666 29.105006 6617.7377 1.6246462e+09 0.10760360 0.023683816 99.565837 28.971726 6620.2536 1.5447653e+09 0.10698164 0.024848929 99.630007 28.838447 6622.7696 1.4688046e+09 0.10552158 0.024553151 99.694178 28.705167 6625.2856 1.3945011e+09 0.10395452 0.025738379 99.756940 28.571882 6627.8015 1.3217346e+09 0.10199128 0.025626435 99.816186 28.438582 6630.3175 1.2533578e+09 0.10039317 0.025929084 99.874857 28.309145 6632.8335 1.1957451e+09 0.098536404 0.026132288 99.931896 28.190676 6635.3495 1.1463350e+09 0.096598152 0.026452195 99.988935 28.072206 6637.8654 1.1049230e+09 0.094847399 0.025737547 100.04813 27.944047 6640.3814 1.0596987e+09 0.094409414 0.025223986 100.10737 27.815703 6642.8974 1.0105038e+09 0.093845581 0.025188419 100.16661 27.682643 6645.4134 9.6094130e+08 0.092266405 0.025645327 100.22584 27.549363 6647.9293 9.1273859e+08 0.090634486 0.026927076 100.28967 27.416083 6650.4453 8.7429061e+08 0.089334031 0.026357179 100.35384 27.282803 6652.9613 8.3354492e+08 0.088625154 0.027515007 100.41355 27.149523 6655.4772 7.9207187e+08 0.087021602 0.027807416 100.47278 27.016243 6657.9932 7.4790567e+08 0.085441254 0.030053216 100.53202 26.882963 6660.5092 7.0835359e+08 0.083946826 0.032088830 100.59125 26.749683 6663.0252 6.7807878e+08 0.082616450 0.032476238 100.65049 26.620610 6665.5411 6.5158641e+08 0.082064790 0.027660453 100.70972 26.492265 6668.0571 6.2447267e+08 0.081373485 0.027521316 100.76489 26.359826 6670.5731 5.9756526e+08 0.080856498 0.027063131 100.81919 26.226527 6673.0891 5.7182070e+08 0.080455679 0.027592411 100.87745 26.093243 6675.6050 5.4759923e+08 0.078286643 0.030957215 100.93668 25.959963 6678.1210 5.2393527e+08 0.076792000 0.030855681 100.99592 25.826683 6680.6370 4.9987638e+08 0.077217520 0.029578966 101.05515 25.693403 6683.1530 4.7824530e+08 0.077854837 0.031412732 101.11069 25.563823 6685.6689 4.5884489e+08 0.077323372 0.033411386 101.16499 25.435479 6688.1849 4.4041818e+08 0.074501742 0.033827871 101.22286 25.303563 6690.7009 4.2341376e+08 0.072446472 0.033035543 101.28210 25.170282 6693.2168 4.0678487e+08 0.071266038 0.031529699 101.33789 25.040447 6695.7328 3.8900785e+08 0.070608771 0.029724864 101.39219 24.912105 6698.2488 3.7343852e+08 0.069468963 0.030559307 101.44980 24.780444 6700.7648 3.5753790e+08 0.067263762 0.031234963 101.50904 24.647164 6703.2807 3.4407722e+08 0.066590390 0.034377720 101.56508 24.517074 6705.7967 3.2946349e+08 0.066487598 0.038084990 101.61938 24.388730 6708.3127 3.1590215e+08 0.065935254 0.040384075 101.67368 24.257324 6710.8287 3.0719461e+08 0.064156430 0.040658693 101.72798 24.124043 6713.3446 2.9455580e+08 0.061838042 0.044933060 101.78689 23.982796 6715.8606 2.8055251e+08 0.059774721 0.048258783 101.84895 23.836114 6718.3766 2.6598945e+08 0.057379040 0.050398895 101.90464 23.700433 6720.8925 2.5357948e+08 0.057152209 0.050316349 101.95895 23.567134 6723.4085 2.4583530e+08 0.055814333 0.049596781 102.01325 23.437781 6725.9245 2.3660704e+08 0.051503620 0.040998535 102.06755 23.309438 6728.4405 2.2502984e+08 0.050760693 0.040252380 102.12185 23.177290 6730.9564 2.1389361e+08 0.049018724 0.041690293 102.17615 23.044010 6733.4724 2.0643480e+08 0.047615714 0.046489152 102.23045 22.914406 6735.9884 1.9959958e+08 0.048922001 0.050342672 102.28475 22.786062 6738.5044 1.8944249e+08 0.050269343 0.060097795 102.34462 22.644533 6741.0203 1.8065635e+08 0.049289421 0.065816665 102.40668 22.497851 6743.5363 1.7317033e+08 0.044661233 0.074665308 102.45672 22.363854 6746.0523 1.6755933e+08 0.042338130 0.078379542 102.50609 22.230574 6748.5682 1.6425677e+08 0.038380421 0.070006462 102.55999 22.101839 6751.0842 1.5713544e+08 0.035298706 0.073747279 102.61429 21.973495 6753.6002 1.4531234e+08 0.032456615 0.074919620 102.67049 21.828743 6756.1162 1.3948482e+08 0.029688570 0.074465819 102.72664 21.683701 6758.6321 1.3383960e+08 0.029436188 0.075042062 102.78094 21.550420 6761.1481 1.3003649e+08 0.030317285 0.077980462 102.83545 21.415846 6763.6641 1.2768302e+08 0.035770174 0.078460245 102.89186 21.269165 6766.1801 1.1963188e+08 0.037769046 0.080121038 102.94759 21.128424 6768.6960 1.1585467e+08 0.033400075 0.083360504 103.00189 21.000080 6771.2120 1.1079444e+08 0.028701078 0.089819339 103.05682 20.866270 6773.7280 1.0538613e+08 0.024221737 0.095921680 103.11324 20.719588 6776.2439 1.0063847e+08 0.019734820 0.10202402 103.16594 20.582544 6778.7599 94129044. 0.015277445 0.10812636 103.21531 20.454200 6781.2759 91821411. 0.010761640 0.11422870 103.26819 20.316691 6783.7919 89820927. 0.0062418004 0.12033104 103.32461 20.170010 6786.3078 86959790. 0.0017359625 0.12643338 103.37948 20.036665 6788.8238 84254565. -0.0027696402 0.13253572 103.43378 19.908322 6791.3398 77479881. -0.0072222869 0.13863806 103.48957 19.767116 6793.8558 74138408. -0.011715366 0.14474040 103.54599 19.620435 6796.3717 71460112. -0.016212812 0.15084274 103.60241 19.473753 6798.8877 68729022. -0.020709481 0.15694508 103.65772 19.329935 6801.4037 65745526. -0.025203399 0.16304743 103.70709 19.201572 6803.9197 62012160. -0.029701915 0.16914977 103.75664 19.070816 6806.4356 58441052. -0.034212169 0.17525211 103.80740 18.924159 6808.9516 57748594. -0.038782354 0.18135445 103.86019 18.777493 6811.4676 57277252. -0.043410325 0.18745679 103.91661 18.630811 6813.9835 54799598. -0.048117803 0.19355913 103.97303 18.484130 6816.4995 55007827. -0.053572896 0.19966147 104.02944 18.337448 6819.0155 50394860. -0.063657025 0.20576381 104.08586 18.190767 6821.5315 48025752. -0.063803337 0.21186615 104.14227 18.044085 6824.0474 45105610. -0.057791203 0.21796849 104.19869 17.897405