The spatial and temporal variability of precipitation time series were investigated for the Hexi Corridor, in Northwest China, by analyzing the entropy information. The examinations were performed on monthly, seasonal, and annual timescales based on 29 meteorological stations for the period of 1961–2015. The apportionment entropy and intensity entropy were used to analyze the regional precipita...

in this study spatial pattern of seasonal and annual precipitation in west mountainous region of iran were investigated using a 35 hydrological year from 1965/66-1999/00 in 170 meteorological stations. in order to evaluate and analyze spatial differences across study area, time distribution of precipitation during the year were also investigated using precipitation concentration index (pci). th...

Fungal disease has important effects in natural and agricultural plant populations; however, we are still uncovering factors that influence severity in these systems. Understanding these factors is especially important because it has been predicted that climate change will increase fungal disease widely as a result of changes in precipitation. Here, we investigate the role of water availability...

objective: an increasing number of studies have reported on shifts in timing and length of the growing season, based on phonological, satellite and climatologically studies. changes in the timing and length of the growing season (gsl) may not only have far reaching consequences for plant and animal ecosystems, but persistent increases in gsl may lead to long-term increases in carbon storage and...

A number of significant annual weather variables are known to be critical to the quantity and quality of vineyard harvest. In rain-fed viticulture regions for example, most quality wines are produced in areas where the annual precipitation is below 700 to 800 mm (Jackson and Shuster, 1987; Galet, 1993). Indeed, barring any moisture stress to the vine, a warm, dry growing season is generally ass...

Land–atmosphere exchange of carbon dioxide (CO2) in peatlands exhibits marked seasonal and interannual variability, which subsequently affects the carbon (C) sink strength of catchments across multiple temporal scales. Long-term studies are needed to fully capture the natural variability and therefore identify the key hydrometeorological drivers in the net ecosystem exchange (NEE) of CO2. Since...

The spread of C4 grasses in the late Neogene is one of the most important ecological transitions of the Cenozoic, but the primary driver of this global expansion is widely debated. We use the stable carbon isotopic composition (δ(13)C) of bison and mammoth tissues as a proxy for the relative abundance of C3 and C4 vegetation in their grazing habitat to determine climatic and atmospheric CO2 con...

[1] We analyze the response of the North American Monsoon (NAM) to increased greenhouse gas (GHG) forcing (emissions scenario RCP 8.5) using new simulations available through the Coupled Model Intercomparison Project version 5 (CMIP5). Changes in total monsoon season rainfall with GHG warming are small and insignificant. The models do, however, show significant declines in early monsoon season ...

[1] Net primary productivity (NPP) in North America was computed for the years 1982–1998 using the Carnegie-Ames-Stanford approach (CASA) carbon cycle model. CASA was driven by a new, corrected satellite record of the normalized difference vegetation index at 8-km spatial resolution. Regional trends in the 17-year NPP record varied substantially across the continent. Croplands and grasslands of...

BACKGROUND The longer growing season under climate warming has served as a crucial mechanism for the enhancement of terrestrial carbon (C) sink over the past decades. A better understanding of this mechanism is critical for projection of changes in C cycling of terrestrial ecosystems. METHODOLOGY/PRINCIPAL FINDINGS A 4-year field experiment with day and night warming was conducted to examine ...