The ozone in troposphere is a direct greenhouse gas [1] and its importance, both from a radiative point of view and concerning its interaction with the biosphere, is outlined in several scientific papers. Monitoring its trends, especially in highly polluted locations, is a relevant topic in recent geo-sciences research. Obtaining information about ozone in the lower atmospheric levels from spac...

This paper introduces a definition of sand/dust storm process as a new standard and idea of sand/dust storm (SDS) groups a number of SDS-events in Northeast Asia. Based on the meteorological data from WMO/GOS network, 2456 Chinese surface stations and NCEP-NCAR reanalysis, the sand/dust storm processes in Northeast Asia in spring 2000–2006 are investigated. And the evolutions of anomalies of ge...

The response of the zonal-mean zonal winds in the tropical upper troposphere to thermal forcing in the Tropics is studied using an idealized general circulation model with 18 vertical levels and simplified atmospheric physics. The model produces a conventional general circulation, with deep easterly flow over the equator, when integrated using zonally invariant and hemispherically symmetric bou...

We present an analysis of the Asian outtow of CO, ozone, and nitrogen oxides (NO x) over the Paciic by using the GEOS-CHEM global 3-D model of tropospheric chemistry to simulate observations from the PEM-West B aircraft mission in February-March 1994. The GEOS-CHEM model uses assimilated meteorological elds from the NASA Goddard Earth Observing System (GEOS). It reproduces well the main feature...

The impacts of climate change on tropospheric transport, diagnosed from a carbon monoxide (CO)-like tracer 15 species emitted from global CO sources, are evaluated from an ensemble of four chemistry-climate model (CCMs) contributing to the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). Model time-slice simulations for present-day and end of the 21 century conditions w...

[1] Summer thermal structure and winds over Asia show a larger land-ocean thermal gradient in the upper than in the lower troposphere, implying a bigger role of the upper troposphere in driving the Asian summer monsoon circulation. Using data from atmospheric re-analyses and model simulations, we show that the land-ocean thermal contrast in the mid-upper (200–500 hPa) troposphere (TCupper) cont...

The Department of Meteorology at Stockholm University operates the Esrange Rayleigh/Raman lidar at Esrange (68 N, 21 E) near the Swedish city of Kiruna. This paper describes the design and first measurements of the new pure rotational-Raman channel of the Esrange lidar. The Esrange lidar uses a pulsed Nd:YAG solid-state laser operating at 532 nm as light source with a repetition rate of 20 Hz a...

In this study the depth of the atmospheric boundary layer (ABL) over the Tibetan Plateau was measured during a regional radiosonde observation campaign in 2008 and found to be deeper than indicated by previously measurements. Results indicate that during fair weather conditions on winter days, the top of the mixed layers can be up to 5 km above the ground (9.4 km above sea level). Measurements ...

This work addresses some of the key topics of space physics research recommended in the National Research Council 2003 report “A Decadal Research Strategy in Solar and Space Physics”, namely, the thunderstorm-driven electrodynamic coupling between the troposphere, mesosphere, lower ionosphere, and magnetosphere. Lightning-induced electron precipitation encompasses all of these regions, from atm...