polar stratospheric clouds
Simulation of polar stratospheric clouds in the chemistry-climate-model EMAC via the submodel PSC
... Abstract. The submodel PSC of the ECHAM5/MESSy At- mospheric Chemistry model (EMAC) has been developed to simulate the main types of polar stratospheric clouds (PSC). The parameterisation of the ...
14
Depolarization ratio of polar stratospheric clouds in coastal Antarctica: comparison analysis between ground-based Micro Pulse Lidar and space-borne CALIOP observations
... The polar stratosphere in both hemispheres is characterized by very low temperatures during winter leading to the for- mation of polar stratospheric clouds ...In Polar regions PSCs ...
15
Assessing lidar-based classification schemes for polar stratospheric clouds based on 16 years of measurements at Esrange, Sweden
... of polar stratospheric clouds (PSCs) are commonly analyzed in classification schemes that apply the backscatter ratio and the particle depolarization ...
20
Maintenance of polar stratospheric clouds in a moist stratosphere
... that polar stratospheric clouds (PSCs) could have acted to substantially warm high latitude regions during past warm climates such as the Eocene (55 ...of stratospheric wa- ter vapor transport ...
10
Effects of polar stratospheric clouds in the Nimbus 7 LIMS Version 6 data set
... From 14 to 17 January the Aleutian anticyclone expanded and distorted the vortex, such that the polar low filled at 290 ◦ E but deepened at 110 ◦ E. The region of coldest tem- peratures shifted to the east. The ...
20
A condensed mass advection based model of liquid polar stratospheric clouds
... PSCs have a major role in the destruction of stratospheric ozone, which they contribute to by activating chlorine and denitrifying the stratosphere. PSC particles enable the het- erogeneous reactions which release ...
10
Nucleation of nitric acid hydrates in polar stratospheric clouds by meteoric material
... form and are thought to be processed chemically in those droplets (Neely et al., 2011; Saunders et al., 2012). Whilst we have used analogues for MSPs after processing, a more complete study would work in ternary solution ...
13
The Met Office HadGEM3-ES chemistry–climate model: evaluation of stratospheric dynamics and its impact on ozone
... simulating stratospheric ozone are calculated, and the free-running model is found to outperform the previous model version in 10 of the 14 ...in stratospheric transport and tropical tropopause tem- ...
24
Evaluation of the new UKCA climate-composition model – Part 1: The stratosphere
... and stratospheric ozone chem- istry ...to stratospheric cooling, in- creased abundance of polar stratospheric clouds (PSCs) and enhanced chlorine activation, delaying ozone recovery ...
15
Update of the Polar SWIFT model for polar stratospheric ozone loss (Polar SWIFT version 2)
... the polar vortex in sunlight and the fraction of the polar vortex below the tem- peratures necessary for the formation of polar stratospheric ...the Polar SWIFT model introducing ...
19
Effects of Sudden Stratospheric Warming Events on the Distribution of Total Column Ozone over Polar and Middle Latitude Regions
... the polar and middle latitude regions. Warming in the polar stratos- phere occurred in the mid-winter resulted in an increase of 30 DU in the TCO mean ...final stratospheric warming, which occurred ...
15
Toward autonomous surface-based infrared remote sensing of polar clouds: cloud-height retrievals
... high clouds is generally to lower the retrieved cloud base, in keeping with the enhanced mean bias shown in ...for clouds with bases near the ...between clouds with bases above and below an ...
19
Tomographic retrieval of water vapour and temperature around polar mesospheric clouds using Odin-SMR
... Degenstein, D. A., Lloyd, N. D., and McDade, I. C.: Mesopause temperatures during the polar mesospheric cloud season, Geo- phys. Res. Lett., 38, L11803, doi:10.1029/2011GL047437, 2011. Sica, R. J., Izawa, M. R. ...
19
Elucidation of the origins of stratospheric sulfate aerosols by isotopic methods
... important stratospheric species, including stratospheric ...of stratospheric sulfate aerosol sulfur remain an unresolved issue because of uncertainties in the global sulfur budget and model ...
6
I. Seasonal Changes in Titan’s Cloud Activity. II. Volatile Ices on Outer Solar System Objects
... equatorial clouds after 2008 and a lack of south polar clouds would provide support for the insolation driven cloud ...Titan’s clouds with season are likely controlled by complex interplay ...
115
Layered phenomena in the mesopause region
... the clouds in the CIPS data; and using a log-normal or exponential, rather than a Gaussian, ice particle size ...the clouds, which can then be used to improve understanding of atmospheric processes ...
7
Albedo-Ice Regression method for determining ice water content of polar mesospheric clouds using ultraviolet observations from space
... a cloud element multiple times in its sun-synchronous or- bital passage over the polar region, thus providing consecu- tive measurements of the same location at multiple (typically seven) scattering angles (SAs). ...
12
The Interactive Stratospheric Aerosol Model Intercomparison Project (ISA-MIP): motivation and experimental design
... the stratospheric aerosol particles and are de- pendent on the aerosol surface area ...in stratospheric aerosol ob- served between 2000 and 2010 based on ground and satellite- borne observations (Vernier et ...
28
Toward autonomous surface-based infrared remote sensing of polar clouds: retrievals of cloud optical and microphysical properties
... Although ground-based observations in the polar regions are sparse, measurements made during campaigns and at per- manent field sites (e.g., Bromwich et al., 2012; Cox et al., 2014; Uttal et al., 2015, and ...
16
Stratospheric “wave hole” and interannual variations of the stratospheric circulation in late winter
... upper stratospheric circulation can be ...the stratospheric dynamics ...more stratospheric warmings in high solar (HS) activity for the wQBO years and in low solar (LS) activity for eQBO years ...
9