Comparison of meteorological observations at Mt. Everest and K2: Examples of the 1984 and 1986 expedition

Lüdecke, Cornelia; Kuhle, Matthias

doi:10.1007/bf01025827

Cited by 12 publications

(10 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the former studies of glacier wind (Shen and Gao 1975;Jiro 1987, Ludecke and Kuhle 1991, and Zou et al 2008, spectra and co-spectra were analyzed depending on the prevailing wind; case A-southerly wind speed larger than 6 m s À1 during daytime, case B-southerly with wind speed less than 6 m s À1 and case Cnortherly wind. In Fig.…”

Section: Resultsmentioning

confidence: 99%

“…This kind of research has been performed in mountainous regions such as the Mt. Everest region, where Shen and Gao (1975), Ludecke and Kuhle (1991) have suggested that a major influence on turbulence was the strong down-valley flow induced by (normal) glacier wind in this area. Zou et al (2008) suggested that this local wind system was well confined in the Rongbuk Valley due to the topographic shielding e¤ects.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Turbulence Characteristics of the Atmospheric Surface Layer on the North Slope of Mt. Everest Region in the Spring of 2005

Zhong

2012

Journal of the Meteorological Society of Japan

View full text Add to dashboard Cite

Turbulence measurements at 3 m performed at the base camp of Mt. Everest during the spring of 2005 were used to study the atmospheric turbulent characteristics under conditions of down-slope ambient wind (katabatic wind). The cases where large-scale forcing resulted in a down-slope ambient wind were considered. Firstly, the normalized standard deviations of wind speed (u and v components) were larger than those reported in the literature. Then the (co)spectral characteristics of turbulence under near neutral stratification were described depending on the prevailing wind; case A-southerly with wind speed larger than 6 m s À1 during daytime, case B-southerly with wind speed less than 6 m s À1 and case C-northerly wind. The analysis of the averaged spectra and co-spectra revealed that low frequency perturbations had a large influence on the variance of u and w wind components, and also altered the co-spectra of momentum and sensible heat flux under near neutral stratification. The features of spectral shape and power were di¤erent from the previous ones under ideal flat and homogeneous conditions. The possible cause of these features is due to strong down-valley flow induced by (normal) glacier wind.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Turbulence Characteristics of the Atmospheric Surface Layer on the North Slope of Mt. Everest Region in the Spring of 2005

Zhong

2012

Journal of the Meteorological Society of Japan

View full text Add to dashboard Cite

show abstract

“…It is also noted that the river discharge in this region tend to maximise in July. Westerly circulation is found to be influencing the climate in the Karakoram more than any other weather systems (Ludecke & Kuhle 1991). There is a positive trend in the mean and the maximum temperatures during the winter and exists a negative trend during the Indian monsoon (Roohi 2007).…”

Section: Geocarto Internationalmentioning

confidence: 99%

Recent variations of supraglacial lakes on the Baltoro Glacier in the central Karakoram Himalaya and its possible teleconnections with the pacific decadal oscillation

Veettil

Bianchini²,

Bremer

et al. 2015

Geocarto International

View full text Add to dashboard Cite

This study discusses the formation and variations of supraglacial lakes on the Baltoro glacier system in the central Karakoram Himalaya during the last four decades. We mapped supraglacial lakes on the Baltoro Glacier from 1978 to 2014 using Landsat MSS, TM, ETM + and LCDM images. Most of the glacial lakes were formed or expanded during the late 1970s-2008. After 2008, the total number and the area of glacial lakes were found to be lesser compared to previous years. We tried to find any teleconnections exists between the glacial lake changes in this region and the pacific decadal oscillation (PDO), which entered its prolonged warm regime in the late 1970s and again to its cold regime in 2008, based on observational investigation. The decrease in the number and area of the supraglacial lakes after 2008 is hypothesised to be linked with the recent cold phase of PDO.

show abstract

“…As a result, there are limited field observational data, and even conventional meteorological observations are scarce. Although existing research has enhanced our understanding of high-altitude climatic characteristics in this region, most studies extend only over timescales of days, weeks, months or the ablation season rather than the entire annual cycle [9][10][11][12][13][14][15]. Therefore, the Indian monsoon, westerly jet evolution and details of climate characteristics in such ultra-high altitude regions as the central Himalaya are still poorly understood.…”

mentioning

confidence: 99%

Seasonal transition characteristics of the westerly jet: Study based on field observations at an altitude of 6900 m on the Mt. Xixiabangma Dasuopu glacier

Tian

Wang

2011

Chin. Sci. Bull.

View full text Add to dashboard Cite

To better understand ultra-high-altitude climate characteristics and their changes, an automatic weather station was installed on August 4, 2005 on the Mt. Xixiabangma Dasuopu glacier (28°23.04′N, 85°43.72′E, 6900 m a.s.l.) in the middle of the Himalayas. Mountain weather conditions were observed continuously and automatically. This paper is the first to publish meteorological data for a whole year for a high-elevation region, and analyze wind direction, wind speed, air temperature, air pressure and humidity. Analysis of the observation data reveals that this region was strongly influenced by the westerly jet from October 10, 2005 to April 21, 2006 and by the Indian monsoon from May to September. The seasonal transitions of the westerly jet were characterized by changes in meteorological elements. In winter, influenced by the westerly jet, the wind speed in the study region was very high and fluctuated violently, gale days were frequent, temperature and air pressure fluctuated dramatically, the diurnal range of temperature decreased and the diurnal range of air pressure increased, relative humidity and specific humidity declined sharply, and air was dry. In summer, influenced by the Indian monsoon, the relative humidity and specific humidity were high. In addition, we analyzed reanalysis data for the location of the automatic weather station. The results confirmed that this region was strongly affected by the westerly jet from October 10, 2005 to April 21, 2006 and the observations that the seasonal transitions of the westerly jet were characterized by changes in meteorological elements.

show abstract

Comparison of meteorological observations at Mt. Everest and K2: Examples of the 1984 and 1986 expedition

Cited by 12 publications

References 3 publications

The Turbulence Characteristics of the Atmospheric Surface Layer on the North Slope of Mt. Everest Region in the Spring of 2005

The Turbulence Characteristics of the Atmospheric Surface Layer on the North Slope of Mt. Everest Region in the Spring of 2005

Recent variations of supraglacial lakes on the Baltoro Glacier in the central Karakoram Himalaya and its possible teleconnections with the pacific decadal oscillation

Seasonal transition characteristics of the westerly jet: Study based on field observations at an altitude of 6900 m on the Mt. Xixiabangma Dasuopu glacier

Contact Info

Product

Resources

About