Seasonal Weather Variations in Khumbu Himal

Yasunari, Tetsuzo

doi:10.5331/seppyo.38.special_74

Cited by 16 publications

(11 citation statements)

References 9 publications

(10 reference statements)

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“…On the contrary, Manang and Mustang districts, which receive the lowest amount of precipitation in the country [39], lie in the leeward side of these mountains in the Trans-Himalaya region of the GRB. In high mountain areas, the local topography also plays an important role [40] in precipitation amount. One additional contributor for the low amount of precipitation measured in the Trans-Himalaya region may be the under-estimation of snowfall by both surface rain gauges and remote sensing [10].…”

Section: Discussionmentioning

confidence: 99%

Spatial and Temporal Variability of Rainfall in the Gandaki River Basin of Nepal Himalaya

Panthi

Dahal

Shrestha

et al. 2015

Climate

129

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Landslides, floods, and droughts are recurring natural disasters in Nepal related to too much or too little water. The summer monsoon contributes more than 80% of annual rainfall, and rainfall spatial and inter-annual variation is very high. The Gandaki River, one of the three major rivers of Nepal and one of the major tributaries of the Ganges River, covers all agro-ecological zones in the central part of Nepal. Time series tests were applied for different agro-ecological zones of the Gandaki River Basin (GRB) for rainfall trends of four seasons (pre-monsoon, monsoon, post-monsoon and winter) from 1981 to 2012. OPEN ACCESSClimate 2015, 3 211The non-parametric Mann-Kendall and Sen's methods were used to determine the trends. Decadal anomalies relative to the long-term average were analyzed using the APHRODITE precipitation product. Trends in number of rainy days and timing of the monsoon were also analyzed. We found that the post-monsoon, pre-monsoon and winter rainfalls are decreasing significantly in most of the zones but monsoon rainfall is increasing throughout the basin. In the hill region, the annual rainfall is increasing but the rainy days do not show any trend. There is a tendency toward later departure of monsoon from Nepal, indicating an increase in its duration. These seasonally and topographically variable trends may have significant impacts for the agriculture and livestock smallholders that form the majority of the population in the GRB.

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Section: Discussionmentioning

confidence: 99%

Spatial and Temporal Variability of Rainfall in the Gandaki River Basin of Nepal Himalaya

Panthi

Dahal

Shrestha

et al. 2015

Climate

129

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“…In winter, high pressure over the plateau drives cold, dry air moving out of the plateau to the north, east, and south (winter monsoon), from about October through April. The transition in atmospheric circulation takes place in May and September [ Yasunari , 1976; Bryson , 1986; Murakami , 1987]. The location of the Mount Everest (27°59′N, 86°55′E) (Figure 1) in the central Himalayas at the boundary of the Indian Monsoon and the continental climate of central Asia, combined with the high elevation of the coring site (6450 m, well above the influence of the boundary layer), provide a unique opportunity to describe and understand change in climate and chemistry of the atmosphere over Asia.…”

Section: Introductionmentioning

confidence: 99%

Twentieth century increase of atmospheric ammonia recorded in Mount Everest ice core

et al. 2002

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) concentrations suggests that a portion of the increase in NH 4 + concentrations could be contributed by enhanced atmospheric acidification. Anthropogenic ammonia emissions from enhanced agricultural activities and energy consumption over Asia in concert with population increase since the 1950s appear also to be a significant factor in the dramatic increase of NH 4 + concentrations during the last few decades.

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“…This result suggests that though the precipitation is mainly due to the effect of the monsoon, a semiarid climate is dominant in this region (Inoue, 1976;Yasunari, 1976b). During the monsoon period in 1974, a temporary meteorological station was established at Hidden Valley (5055 m) in west Nepal, to study and compare the climatic conditions of east and west Nepal.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Monsoonal Precipitation around Peaks and Ridges in Shorong and Khumbu Himal

Yasunari¹,

Inoue²

1978

Journal of the Japanese Society of Snow and Ice

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Through the monsoon period of 1976, precipitation phenomena were observed at temporary stations around peaks and ridges of high altitude (5000-5500 m) in Shorong and Khumbu Himal, in addition to the observarions made at Lhajung station (4420 m) in the Khumbu region. Through these observations, it was found that the amounts of precipitation at these two stations is 4 or 5 times larger than that at Lhajung. While day to day convective precipitation contributes the major part of the total amount at Shorong and Glacier EB 050 (E9) stations, a few rainy days of large amount of precipitation account for most of the contribution at Lhajung station. It was also found that the statistical features of precipitation as a function of time of day are systematically different among these three stations. Along the slope to Glacier EB 050 (E9) in Khumbu Himal, the amount of precipitation gradually increases with increase of altitude. However, along the slope to Glacier AX 030 in Shorong Himal, the amount is almost uniformly distributed from 4000 m up to the terminus of the glacier (5200 m).

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Seasonal Weather Variations in Khumbu Himal

Cited by 16 publications

References 9 publications

Spatial and Temporal Variability of Rainfall in the Gandaki River Basin of Nepal Himalaya

Spatial and Temporal Variability of Rainfall in the Gandaki River Basin of Nepal Himalaya

Twentieth century increase of atmospheric ammonia recorded in Mount Everest ice core

Characteristics of Monsoonal Precipitation around Peaks and Ridges in Shorong and Khumbu Himal

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