%0 Journal Article %1 ChuFeLidar %A Chu, X. Z. %A Espy, P. J. %A Nott, G. J. %A Diettrich, J. C. %A Gardner, C. S. %D 2006 %J Journal of Geophysical Research-Atmospheres %K CLOUDS DIURNAL EXHAUST ICE LEO MESOPAUSE MODEL NOCTILUCENT REGION SOUTH-POLE SPACE-SHUTTLE SUMMER TEMPERATURE VARIATIONS WATER-VAPOR %N D20 %T Polar mesospheric clouds observed by an iron Boltzmann lidar at Rothera (67.5 degrees S, 68.0 degrees W), Antarctica from 2002 to 2005: Properties and implications %V 111 %X Lidarobservations of polar mesospheric clouds (PMC) were made at Rothera, Antarctica, from December 2002 to March 2005. Overall, 128 hours of PMC were detected among the 459 hours of observations, giving a mean occurrence frequency of 27.9%. The mean PMC centroid altitude is 84.12 +/- 0.12 km, the mean PMC total backscatter coefficient is 2.34 +/- 0.11x10(-6) sr(-1), and the mean layer RMS width is 0.93 +/- 0.03 km. The distribution of PMC centroid altitudes over all observations is symmetric (nearly Gaussian), with the most probable altitude (similar to 84 km) near the center of the distribution. The distribution of PMC brightness is non-Gaussian and is dominated by weak PMC. The observed PMC altitudes at Rothera support the earlier lidar findings that Southern Hemispheric PMC are on average 1 km higher than corresponding Northern Hemispheric PMC, and higher PMC occur at higher latitudes. Significant interannual and diurnal variations are observed in PMC centroid altitude and brightness. Mean PMC altitude varies more than 1 km from one year to another. In addition, 24-hour, 12-hour, and 8-hour oscillations are clearly shown in PMC centroid altitude and brightness. The altitude distribution of PMC brightness peaks at a nearly constant altitude of 84 km, with weaker PMC found on either side of this altitude. The mean PMC altitudes averaged in brightness bins are anticorrelated with the PMC brightness, where weaker PMC occur at higher altitude and the PMC altitudes are proportional to the logarithm of the PMC brightness.

@article{ChuFeLidar, abstract = {Lidarobservations of polar mesospheric clouds (PMC) were made at Rothera, Antarctica, from December 2002 to March 2005. Overall, 128 hours of PMC were detected among the 459 hours of observations, giving a mean occurrence frequency of 27.9%. The mean PMC centroid altitude is 84.12 +/- 0.12 km, the mean PMC total backscatter coefficient is 2.34 +/- 0.11x10(-6) sr(-1), and the mean layer RMS width is 0.93 +/- 0.03 km. The distribution of PMC centroid altitudes over all observations is symmetric (nearly Gaussian), with the most probable altitude (similar to 84 km) near the center of the distribution. The distribution of PMC brightness is non-Gaussian and is dominated by weak PMC. The observed PMC altitudes at Rothera support the earlier lidar findings that Southern Hemispheric PMC are on average 1 km higher than corresponding Northern Hemispheric PMC, and higher PMC occur at higher latitudes. Significant interannual and diurnal variations are observed in PMC centroid altitude and brightness. Mean PMC altitude varies more than 1 km from one year to another. In addition, 24-hour, 12-hour, and 8-hour oscillations are clearly shown in PMC centroid altitude and brightness. The altitude distribution of PMC brightness peaks at a nearly constant altitude of 84 km, with weaker PMC found on either side of this altitude. The mean PMC altitudes averaged in brightness bins are anticorrelated with the PMC brightness, where weaker PMC occur at higher altitude and the PMC altitudes are proportional to the logarithm of the PMC brightness.}, added-at = {2009-03-30T22:21:12.000+0200}, author = {Chu, X. Z. and Espy, P. J. and Nott, G. J. and Diettrich, J. C. and Gardner, C. S.}, biburl = {https://www.bibsonomy.org/bibtex/252e0631615459a6de8878d8298b9a6bf/bobsica}, description = {Leo's paper references II}, interhash = {4ff9167e37aa25c187e59427f3b7c39f}, intrahash = {52e0631615459a6de8878d8298b9a6bf}, journal = {Journal of Geophysical Research-Atmospheres}, keywords = {CLOUDS DIURNAL EXHAUST ICE LEO MESOPAUSE MODEL NOCTILUCENT REGION SOUTH-POLE SPACE-SHUTTLE SUMMER TEMPERATURE VARIATIONS WATER-VAPOR}, note = {Cited References: BAILEY SM, 2005, J GEOPHYS RES-ATMOS, V110, ARTN D13203 BAUMGARTEN G, 2005, EOS T AGU S, V86 BERGER U, 2002, J GEOPHYS RES-SPACE, V107, ARTN 1366 CHU X, 2004, IAGA IAMAS ICMA INT CHU X, 2005, EOS T AGU S, V86 CHU XZ, 2001, GEOPHYS RES LETT, V28, P1203 CHU XZ, 2001, GEOPHYS RES LETT, V28, P1937 CHU XZ, 2002, APPL OPTICS, V41, P4400 CHU XZ, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 8447 CHU XZ, 2004, GEOPHYS RES LETT, V31, ARTN L02114 DELAND MT, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 8445 DELAND MT, 2006, J ATMOS SOL-TERR PHY, V68, P9, DOI 10.1016/j.jastp.2005.08.003 ESPY PJ, 2002, J ATMOS SOL-TERR PHY, V64, P1823 FIEDLER J, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 8453 FIEDLER J, 2005, ANN GEOPHYS-GERMANY, V23, P1175 FORBES JM, 2006, J ATMOS SCI, V63, P1776 HERVIG M, 2001, GEOPHYS RES LETT, V28, P971 HERVIG M, 2006, J ATMOS SOL-TERR PHY, V68, P30, DOI 10.1016/j.jastp.2005.08.010 HOFFNER J, 2003, ATMOS CHEM PHYS, V3, P1101 JENSEN EJ, 1988, J GEOPHYS RES, V93, P2461 KLOSTERMEYER J, 1998, J GEOPHYS RES-ATMOS, V103, P28743 KLOSTERMEYER J, 2001, J GEOPHYS RES-ATMOS, V106, P9749 LUBKEN FJ, 2004, GEOPHYS RES LETT, V31, ARTN L08103 PICONE JM, 2002, J GEOPHYS RES-SPACE, V107, ARTN 1468 PLANE JMC, 2004, SCIENCE, V304, P426 PRESS WH, 1986, NUMERICAL RECIPES AR RAPP M, 2002, J GEOPHYS RES-ATMOS, V107, ARTN 4392 RAPP M, 2006, J ATMOS SOL-TERR PHY, V68, P715, DOI 10.1016/j.jastp.2005.10.015 REID GC, 1975, J ATMOS SCI, V32, P523 ROZENFIELD SH, 1986, COLL WORKS INT WORKS, P173 SHETTLE EP, 2002, J GEOPHYS RES-ATMOS, V107, ARTN 4134 SISKIND DE, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 4051 SISKIND DE, 2005, J ATMOS SOL-TERR PHY, V67, P501, DOI 10.1016/j.jastp.2004.11.007 SMITH AK, 2000, GEOPHYS RES LETT, V27, P177 STEVENS MH, 2003, GEOPHYS RES LETT, V30, ARTN 1546 STEVENS MH, 2005, GEOPHYS RES LETT, V32, ARTN L13810 STEVENS MH, 2005, J GEOPHYS RES-SPACE, V110, ARTN A02306 THAYER JP, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 8449 THAYER JP, 2006, J ATMOS SOL-TERR PHY, V68, P85, DOI 10.1016/j.jastp.2005.08.012 THOMAS GE, 1991, REV GEOPHYS, V29, P553 THOMAS GE, 2003, EOS T AGU, V84, P352 THOMPSON RV, 1996, IMARE CONF, V18, P3 TURCO RP, 1982, PLANET SPACE SCI, V30, P1147 VONZAHN U, 1998, GEOPHYS RES LETT, V25, P1289 VONZAHN U, 2003, EOS T AGU, V84, P261 VONZAHN U, 2003, J GEOPHYS RES-ATMOS, V108, ARTN 8451 Chu, Xinzhao Espy, Patrick J. Nott, Graeme J. Diettrich, Jan C. Gardner, Chester S.}, number = {D20}, timestamp = {2009-03-30T22:21:12.000+0200}, title = {Polar mesospheric clouds observed by an iron Boltzmann lidar at Rothera (67.5 degrees S, 68.0 degrees W), Antarctica from 2002 to 2005: Properties and implications}, volume = 111, year = 2006 }