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Estimating Regional Precipitation Trends Comparison of two Methods
Regional Precipitation Trends Comparison two Methods
2009/10/23
Two different methods werc applied to estimate long-term precipitation trends
representativ'e for regions in Norway. A new method, comparative trend analysis
(CTA), was applied on 142 homogeneous pr...
Trends and Characteristics of Hydrological Time Series in Finland
Trends Characteristics Hydrological Time Series Finland
2009/10/22
Hydrological time series analyses made in Finland up to 2001 show the following:
1) Precipitation has been increasing in southern and central Finland, and
also in the north in winter, during the per...
Quantifying changes and trends in glacier area and volume in the Austrian tztal Alps(1969-1997-2006)
changes trends glacier area Austrian tztal Alps
2010/2/3
In this study we apply a simple and reliable method to derive recent changes in glacier area and volume by taking advantage of high resolution LIDAR (light detection and ranging) DEMs (digital elevati...
A STOCHASTIC MODEL FOR IDENTIFICATION OF TRENDS IN OBSERVED HYDROLOGICAL AND METEOROLOGICAL DATA DUE TO CLIMATE CHANGE IN WATERSHEDS
climate change STOCHASTIC MODEL natural processes
2009/10/12
The development of appropriate public policy responses to the impact of climate change on the overall ecosystem would require knowledge of future trends in the natural processes affecting the ecosyste...
Variability and recent trends in the African terrestrial carbon balance
Variability recent trends African terrestrial carbon balance
2010/1/21
We modeled the African terrestrial carbon balance over the past century using a spatially resolved process based vegetation model (ORCHIDEE). The model is forced by changing climate and by human-induc...
Observed drought and wetness trends in Europe:an update
www.hydrol-earth-syst-sci.net www.hydrol-earth-syst-sci.net www.hydrol-earth-syst-sci.net www.hydrol-earth-syst-sci.net www.hydrol-earth-syst-sci.netObserved drought wetness trends
2009/9/11
Linear and nonlinear trends of drought and wetness are analysed in terms of the gridded Standardized Precipitation Index (SPI) determined from monthly precipitation in Europe (NCEP/NCAR). In character...
Persistence and Time Trends in the Temperatures in Spain
Persistence Time Trends Temperatures Spain
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...
Impact of prescribed SSTs on climatologies and long-term trends in CCM simulations
prescribed SSTs climatologies long-term trends CCM simulations
2009/8/25
Chemistry-Climate Model (CCM) simulations are commonly used to project the past and future development of the dynamics and chemistry of the stratosphere, and in particular the ozone layer. So far, CCM...
Recent trends in atmospheric methyl bromide: analysis of post-Montreal Protocol variability
atmospheric methyl bromide post-Montreal Protocol variability
2009/8/25
The atmospheric methyl bromide (CH3Br) burden has declined in recent years, in response to the phaseout of agricultural and structural fumigation consumption under the amendments to the Montreal Proto...
Spatial trends in leaf size of Amazonian rainforest trees
Spatial trends leaf size Amazonian rainforest trees
2010/1/20
Leaf size influences many aspects of tree function such as rates of transpiration and photosynthesis and, consequently, often varies in a predictable way in response to environmental gradients. The re...
Surface ozone at the Caucasian site Kislovodsk High Mountain Station and the Swiss Alpine site Jungfraujoch: data analysis and trends（1990–2006）
Surface ozone Caucasian site Kislovodsk High Mountain Station the Swiss Alpine site Jungfraujoch
2009/6/23
Long-term ozone measurements of two background mountain sites, namely the Kislovodsk High Mountain Station in Caucasus, Russia (KHMS, 43.70° N, 42.70° E, 2070 m a.s.l.) and the Jungfraujoch in Switzer...
Long-lived halocarbon trends and budgets from atmospheric chemistry modelling constrained with measurements in polar firn
Long-lived halocarbon atmospheric chemistry modelling polar firn
2009/6/22
The budgets of seven halogenated gases (CFC-11, CFC-12, CFC-113, CFC-114, CFC-115, CCl4 and SF6) are studied by comparing measurements in polar firn air from two Arctic and three Antarctic sites, and ...
Variability and trends in stratospheric NO2 in Antarctic summer, and implications for stratospheric NOy
stratospheric NO2 Antarctic summer stratospheric NOy
2009/6/16
NO2 measurements during 1990–2007, obtained from a zenith-sky spectrometer in the Antarctic, are analysed to determine the long-term changes in NO2. An atmospheric photochemical box model and a radiat...
Atmospheric Trends Above Finland:II Troposphere and Stratosphere
Ozone temperature radiosoundings
2009/6/10
Long-term meteorological monitoring activities at Sodankylä (67°N, 26°E) in Northern Finland
are discussed. Observed time series of surface temperature, radiosoundings, solar radiation, and ozon...
Atmospheric Trends Above Finland:I Mesosphere and Thermosphere
Ionosphere global change evolution of the atmosphere ionosphere atmosphere interactions atmospheric composition and structure, atmosphere
2009/6/10
In the present study we analyse various long-term data series of measurements run by the
Sodankylä Geophysical Observatory for possible indications of cooling trends in the upper atmosphere.We r...