搜索结果: 1-15 共查到“大气物理学 Antarctic”相关记录15条 . 查询时间(0.078 秒)
In this work after a short introduction on the structure of Programma Nazionale di Ricerche in Antartide, the
different researches on atmospheric physics developed by Italian scientists are presented...
Dynamics of the Antarctic and Arctic mesosphere and lower thermosphere – Part 1: Mean winds
the Antarctic and Arctic mesosphere lower thermosphere Mean winds
2010/11/29
Zonal and meridional winds have been measured in the upper mesosphere and lower thermosphere at polar latitudes using two ground-based meteor radars. One radar is located at Rothera (68° S, 68° W) in ...
Vertical structure of Antarctic tropospheric ozone depletion events: characteristics and broader implications
Vertical structure Antarctic tropospheric ozone depletion events characteristics and broader implications
2010/8/25
The majority of tropospheric ozone depletion event (ODE) studies have focussed on time-series measurements, with comparatively few studies of the vertical component. Those that exist have almost exclu...
Estimation of Antarctic ozone loss from ground-based total column measurements
Antarctic ozone ground-based total column measurements
2010/8/16
The passive tracer method is used to estimate ozone loss from ground-based measurements in the Antarctic. A sensitivity study shows that the ozone depletion can be estimated within an accuracy of ~4%....
Post-coring entrapment of modern air in some shallow ice cores collected near the firn-ice transition: evidence from CFC-12 measurements in Antarctic firn air and ice cores
modern air shallow ice cores the firn-ice transition CFC-12 measurements Antarctic firn air and ice cores
2010/8/13
In this study, we report measurements of CFC-12 (CCl2F2) in firn air and in air extracted from shallow ice cores from three Antarctic sites. The firn air data are consistent with the known atmospheric...
Overview of mercury measurements in the Antarctic troposphere
mercury measurements the Antarctic troposphere
2010/8/12
Polar ecosystems are considered to be the last pristine environments of the earth relatively uninfluenced by human activities. Antarctica in particular, compared to the Arctic is considered to be even...
The 16-day wave in the Arctic and Antarctic mesosphere and lower thermosphere
16-day wave Arctic and Antarctic mesosphere lower thermosphere
2010/2/21
The 16-day planetary wave in the polar mesosphere and lower thermosphere has been investigated using meteor radars at Esrange (68° N, 21° E) in the Arctic and Rothera (68° S, 68° W) in the Antarctic. ...
Antarctic ice-sheet response to atmospheric CO2 and insolation in the Middle Miocene
Antarctic ice-sheet Middle Miocene atmospheric CO2
2009/12/3
Foraminiferal oxygen isotopes from deep-sea sediment cores suggest that a rapid expansion of the Antarctic ice sheet took place in the Middle Miocene around 13.9 million years ago. The origin for thi...
The simulation of the Antarctic ozone hole by chemistry-climate models
Antarctic ozone hole chemistry-climate models
2009/9/11
While chemistry-climate models are able to reproduce many characteristics of the global total column ozone field and its long-term evolution, they have fared less well in simulating the commonly used ...
Dynamical modes associated with the Antarctic ozone hole
Dynamical modes Antarctic ozone hole
2009/8/7
Generalized Maximum Covariance Analysis (GMCA) has been developed and applied to diagnosing the dynamical modes associated with variations in the Antarctic spring ozone hole. GMCA is used to identify ...
HOCl chemistry in the Antarctic Stratospheric Vortex 2002, as observed with the Michelson Interferometer for Passive Atmospheric Sounding（MIPAS）
HOCl chemistry Antarctic Stratospheric Vortex Passive Atmospheric Sounding MIPAS
2009/3/13
In the 2002 Antarctic polar vortex enhanced HOCl mixing ratios were detected by the Michelson Interferometer for Passive Atmospheric Sounding both at altitudes of around 35 km (1000 K potential temper...
Model calculations of the age of firn air across the Antarctic continent
Model calculations firn air Antarctic continent
2009/3/4
The age of firn air in Antarctica at pore close-off depth is only known for a few specific sites where firn air has been sampled for analyses. We present a model that calculates the age of firn air at...
Differences in Arctic and Antarctic PSC occurrence as observed by lidar in Ny-Ålesund（79° N, 12° E）and McMurdo（78° S, 167° E）
Arctic Antarctic PSC lidar Ny-Å lesund McMurdo
2009/2/16
The extent of springtime Arctic ozone loss does not reach Antarctic ``ozone hole'' dimensions because of the generally higher temperatures in the northern hemisphere vortex and consequent less polar s...
A 3D-CTM with detailed online PSC-microphysics: analysis of the Antarctic winter 2003 by comparison with satellite observations
3D-CTM PSC-microphysics Antarctic winter
2008/12/5
We present the first detailed microphysical simulations which are performed online within the framework of a global 3-D chemical transport model (CTM) with full chemistry. The model describes the for...
Multiphase modeling of nitrate photochemistry in the quasi-liquid layer (QLL): implications for NOx release from the Arctic and coastal Antarctic snowpack
Multiphase modeling nitrate photochemistry quasi-liquid layer NOx release Arctic
2008/11/17
We utilize a multiphase model, CON-AIR (Condensed Phase to Air Transfer Model), to show that the photochemistry of nitrate (NO3−) in and on ice and snow surfaces, specifically the quasi-liquid l...