搜索结果: 1-15 共查到“大气科学 trends”相关记录45条 . 查询时间(0.171 秒)
Primary anthropogenic aerosol emission trends for China, 1990–2005
anthropogenic primary aerosol China a dynamic methodology
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2011/2/25
An inventory of anthropogenic primary aerosol emissions in China was developed for 1990–2005 using a technology-based approach. Taking into account changes in the technology penetration within industr...
An analysis of long-term regional-scale ozone simulations over the Northeastern United States: variability and trends
long-term regional-scale ozone the Northeastern United States variability and trends
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2011/2/24
This study presents the results from two sets of 18-year air quality simulations over the Northeastern US performed with a regional photochemical modeling system. These two simulations utilize differe...
Attribution of stratospheric ozone trends to chemistry and transport: a modelling study
stratospheric ozone chemistry transport a modelling study
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2010/12/28
The decrease of the concentration of ozone depleting substances (ODSs) in the stratosphere over the past decade raises the question to what extent observed changes in stratospheric ozone over this per...
Long-term trends of black carbon and sulphate aerosol in the Arctic: changes in atmospheric transport and source region emissions
black carbon sulphate aerosol the Arctic atmospheric transport source region emissions
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2010/10/11
To reveal the contribution of different source regions on these trends, we used a cluster analysis of the output of the Lagrangian particle dispersion model FLEXPART run backward in time from the meas...
Baseline levels and trends of ground level ozone in Canada and the United States
Baseline levels and trends ground level ozone Canada the United States
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2010/9/21
A statistical method was developed to extract baseline levels of ground level ozone in Canada and the US, and to quantify the temporal changes of baseline ozone levels on annual, seasonal, diurnal and...
Temperature variability and trends in the UT-LS over a subtropical site: Reunion (20.8° S, 55.5° E)
Temperature variability and trends the UT-LS a subtropical site Reunion (20.8° S, 55.5° E)
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2010/9/21
This paper mainly focuses on the trends and variability of the UT-LS temperature using radiosonde observations carried out over 16 years (January 1993 to December 2008) from a southern subtropical sit...
Sulfur dioxide emissions in China and sulfur trends in East Asia since 2000
Sulfur dioxide China sulfur trends East Asia
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2010/8/16
With the rapid development of the economy, the sulfur dioxide (SO2) emission from China since 2000 is of increasing concern. In this study, we estimate the annual SO2 emission in China after 2000 usin...
Cyclones causing wind storms in the Mediterranean: characteristics, trends and links to large-scale patterns
Cyclones causing wind storms characteristics trends links to large-scale patterns
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2010/10/21
A climatology of cyclones with a focus on their relation to wind storm tracks in the Mediterranean region (MR) is presented. Trends in the frequency of cyclones and wind storms, as well as variations ...
Trends in long-term gaseous mercury observations in the Arctic and effects of temperature and other atmospheric conditions
long-term gaseous mercury observations the Arctic temperature and other atmospheric conditions
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2010/8/13
Gaseous elemental mercury (GEM) measurements at Alert, Canada, from 1995 to 2007 were analyzed for statistical time trends and for correlations with meteorological and climate data. A significant decr...
Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds
Radiosonde stratospheric temperatures Dumont d'Urville (Antarctica) polar stratospheric clouds
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2010/8/12
Temperature profiles measurements are performed daily (00:00 UT) in Dumont d'Urville (66°40' S, 140°01' E) by Météo-France, using standard radiosondes, since the International Geophysical Year in 1957...
On the seasonal dependence of tropical lower-stratospheric temperature trends
the seasonal dependence tropical lower-stratospheric temperature trends
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2010/8/12
This study examines the seasonality of tropical lower-stratospheric temperature trends using the Microwave Sounding Unit lower-stratospheric channel (T4) for 1980–2008. We present evidence that this s...
Technical Note: Harmonized retrieval of column-integrated atmospheric water vapor from the FTIR network – first examples for long-term records and station trends
Harmonized retrieval column-integrated atmospheric water vapor FTIR network
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2009/12/3
We present a method for harmonized retrieval of integrated water vapor (IWV) from existing, long-term, measurement records at the ground-based mid-infrared solar FTIR spectrometry stations of the Netw...
Decadal trends in aerosol chemical composition at Barrow, Alaska: 1976–2008
Decadal trends aerosol chemical composition Barrow Alaska
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2009/12/3
Aerosol measurements at Barrow, Alaska during the past 30 years have identified the long range transport of pollution associated with Arctic Haze as well as ocean-derived aerosols of more local origin...
Recent climate change in Japan – spatial and temporal characteristics of trends of temperature
climate change Japan temporal characteristics
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2009/12/3
In this paper temperature series of Japan were statistically analysed in order to answer the question whether recent climate change can be proved for Japan; the results were compared and discussed wit...
Persistence and Time Trends in the Temperatures in Spain
Persistence Time Trends Temperatures Spain
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2009/9/4
This paper deals with the analysis of the temperatures in several locations in Spain during the last 50 years. We focus on the degree of persistence of the series, measured through a fractional differ...