United States'interannual precipitation variability over the past century : is variability increasing as predicted by models ?
Climatic change ; Climatic trend ; Interannual variability ; Krigeage ; Model ; Precipitation ; Spatial analysis ; Time series ; Twentieth Century ; United States of America
significant) in seasonalvariability. Although strong spatial gradients or clusters do not appear in the trend values, trends toward increasing variability were substantially higher in the low-sun season than in the high-sun season. Their results from
The AA. examine trends in interannual precipitation variability over the past century for the United States. A variety of statistical methods are applied to the time series, and they consistently find upward trends (most are statistically
the United States provide empirical support for the many modeling studies simulating an increase in precipitation variability given continued global warming.
Climate ; Climatic variability ; Land atmosphere interaction ; New England ; Season ; Seasonalvariability ; Temperate zone ; United States of America ; Vegetation ; Water cycle
Change of parameters of BCC/RCG-WG for daily non-precipitation variables in China : 1951-1978 and 1979-2007
China ; Climate ; Climatic change ; Climatic data ; Interannual variability ; Seasonal cycle ; Solar radiation ; Temperature
to 2007 respectively. The changes in the parameters for the 2 periods are revealed to explore the impact of climate change on these parameters. While the annual means and the amplitudes of the seasonal cycle show a clear change, the interannual variability
, the timings of the seasonal cycles, and the temporal correlations for each variable remain practically unchanged. This indicates that climate changes in China over the last 57 years are mainly reflected in variations in the means and in the strength
Parameters of weather generator BCC/RCG-WG for daily non-precipitation variables including maximum temperature, minimum temperature and sunshine hours at 669 stations in China are estimated using history daily records from 1951 to 1978 and from 1979
of the seasonal cycles. The changed parameters have implications for the stationary assumption implied in the parameter estimation and use of the weather generator for climate change studies.
Air-sea coupled process involved in stepwise seasonal evolution of the Asian summer monsoon
Asia ; Atmospheric dynamics ; Indian Ocean ; Interannual variability ; Monsoon ; Ocean atmosphere interaction ; Pacific Ocean ; Seasonal variation ; Summer ; Surface temperature
Observational evidence is presented to show an atmospere-ocean coupled system in the maturing process of the Asian summer monsoon (ASM) and the western Pacific monsoon (WPM). The ASPM and WPM are characterized by 4 abrupt seasonal changes
that exhibit phase-locking features in the annual cycle. Over the Indian Ocean, the seasonal increase of sea surface temperature (SST) follows the solar insolation and reduced evaporative cooling as well. In contrast, increase of SST over the subtropical
Agroclimatology ; Cereal ; Climatic change ; Ethiopia ; Geographical information system ; Model ; Precipitation ; Seasonalvariability
is analysed by comparing daily rainfall data from 4 stations in 2 periods, 1963 to 1982 and 1984 to 2003, for changes in totals, seasonal distribution and variability. In spite of a greater variability in rainfall the farmers proved their knowledge
The aim of this study is to analyse rainfall variation in South Wollo, in particular the area east of the small town of Hayk, and to study its effect on the ability to grow tef (Eragrostis tef) during the Belg season (February-May). Rainfall
Regionalization and variability of precipitation in Hawaii
Climatic region ; El Niño ; Hawaii ; Ocean atmosphere interaction ; Precipitation ; Principal components analysis ; Regionalization ; Seasonalvariability ; Spatial variation ; Synoptic climatology ; Weather type
The aim of this research is to examine the relationship between ENSO and precipitation at the sub-island scale after regionalizing Hawaiian precipitation based on the seasonal pattern. Specifically, this study addresses the following research
questions : 1) What regions related to the seasonal timing of precipitation can be clearly defined across the islands? 2) Which ENSO index is most strongly correlated with Hawaiian precipitation in each region? and 3) To what degree are all areas
Climatic data ; Climatic variability ; Meteorology ; Poland ; Seasonalvariability ; Snow ; Snow cover ; Twentieth Century
The aim of the study is to investigate long-term changes and variability of snow cover in Poland in the 20th century. The investigation involved homogenised data on the snow cover duration and seasonal maximum depth of snow cover from 66
meteorological stations in Poland spanning 50 to 108 winter seasons. - (BJ)
Patterns of daily rainfall in Bangladesh during the summer monsoon season : case studies at three stations
Bangladesh ; Climatic variability ; Flood ; Monsoon ; Precipitation ; Spatial distribution ; Summer ; Twentieth Century
during the wettest and driest summer monsoon seasons at 3 stations. The results of this study will also be useful for the management of floods and for agricultural and regional planning purposes in Bangladesh.
Air quality ; Atmosphere ; Atmospheric pollution ; Countryside ; Interannual variability ; Pollution ; Seasonalvariability ; Switzerland ; Town ; Years 1990-99
This paper presents some results of seasonal and annual atmospheric pollutants concentrations measured at several locations in Switzerland during the last 15 years. - (BJ)