نتایج جستجو برای: monsoon
تعداد نتایج: 8216 فیلتر نتایج به سال:
Variability of Chlorophyll-a (Chl-a) were intensively investigated at the coastal water inPahang Malaysia. Data of Chl-a derived from Aqua MODIS satellite at 1 km spatial resolution from January 2006 to December 2010 was processed to climatological images. The seasonal progressions of Chl-a distribution during the monsoon period shows that high values were detected during the Northeast monsoon ...
AIM To know the prevalence of gastrointestinal nematode larvae (L3) in the grazing land of cattle in Guwahati, Kamrup district, Assam. MATERIALS AND METHODS Pastures were collected and examined for the presence of nematode larvae (L3) from six localities of Guwahati at monthly interval from August 2012 to July 2013. The counted larvae were then expressed as per kg dry matter of herbage (L3/kg...
The basic ingredients for tropical cyclogenesis have been well established: a sufficiently deep warm ocean layer, low-level cyclonic vorticity, weak vertical wind shear, and deep moist convection (e. et al. 2008) have attributed cyclogenesis to a variety of low-level precursor systems that enhance one or more of these ingredients. These studies have traditionally focused on features such as the...
The Tibetan Plateau exerts a profound influence on winds in boreal winter primarily through mechanical means, blocking flow to create waves in the jet stream that extend around Earth’s full circumference (e.g. Held et al., 2002). In contrast, this plateau was thought to influence boreal summer winds primarily through its thermal effects, providing a heat source over 4 km high and 2,000 km wide ...
Abstract Pakistan is an agricultural country mainly dependant on irrigation through the Indus water system. The country has developed the world’s largest contagious canal network. Monsoon precipitation is the lifeline of Pakistan which not only caters the national power supply and standing crops water demands but help gathers the reserves to meet the requirements of low flow period in the next ...
The lack of a precisely-dated, unequivocal climate proxy from northern China, where precipitation variability is traditionally considered as an East Asian summer monsoon (EASM) indicator, impedes our understanding of the behaviour and dynamics of the EASM. Here we present a well-dated, pollen-based, ~20-yr-resolution quantitative precipitation reconstruction (derived using a transfer function) ...
Two PMIP3/CMIP5 climate model ensemble simulations of the past millennium have been analysed to identify the occurrence of Asian mega-droughts. The Palmer drought severity index (PDSI) is used as the key metric for the data comparison of hydro-climatological conditions. The model results are compared with the proxy data of the Monsoon Asia Drought Atlas (MADA). Our study shows that global circu...
[1] A Holocene Gulf of Guinea record of riverine runoff, based on Ba/Ca in tests of a shallow-dwelling planktic foraminifer, and sea surface temperature (SST), based on Mg/Ca, reveals centennial-scale instabilities in West African monsoon (WAM) precipitation and eastern equatorial Atlantic (EEA) thermal conditions. The long-term Holocene climate trend is characterized by a warm and wet early-mi...
The present study was conducted to analyze heavy metals concentrations from surface water of the Indus River. Forty-one samples were collected from 26 stations. The section of the river surveyed ranged from Kashmor to Keti-Bander. Samples were collected during preand post-monsoon seasons in 2011. The six heavy metals cadmium, iron, zinc, lead, mercury and copper were analyzed to study the surfa...
The El Niño–Southern Oscillation (ENSO) and Indian monsoon are shown to have undergone significant interdecadal changes in variance and coherency over the last 125 years. Wavelet analysis is applied to indexes of equatorial Pacific sea surface temperature (Niño3 SST), the Southern Oscillation index, and all-India rainfall. Time series of 2–7-yr variance indicate intervals of high ENSO–monsoon v...
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