DOI: 10.5194/cp-9-2549-2013
Scopus记录号: 2-s2.0-84887657130
论文题名: A new Himalayan ice core CH4 record: Possible hints at the preindustrial latitudinal gradient
作者: Hou S. ; Chappellaz J. ; Raynaud D. ; Masson-Delmotte V. ; Jouzel J. ; Bousquet P. ; Hauglustaine D.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2013
卷: 9, 期: 6 起始页码: 2549
结束页码: 2554
语种: 英语
Scopus关键词: atmospheric chemistry
; Holocene
; ice core
; latitudinal gradient
; methane
; mixing ratio
; paleoatmosphere
; China
; Himalayas
; Khumbu Himal
; Mount Everest
; Rongbuk Glacier
; Xizang
英文摘要: Two ice cores recovered from the Himalayan East Rongbuk (ER) Glacier on the northeast saddle of Mt. Qomolangma (Everest) (28 01' N, 86 58' E, 6518 m above sea level) give access to a tentative record of past Himalayan atmospheric mixing ratio of CH4 spanning the past 1200 yr. The major part of the record is affected by artifacts probably due to in situ production. After selecting what may represent the true atmospheric mixing ratio, an average of 749 ± 25 ppbv of CH4 is estimated for the late preindustrial Holocene, which is ∼ 36 ± 17 (∼ 73 ± 18) ppbv higher than the atmospheric levels recorded in the Greenland (Antarctic) ice cores. A comparison of these new data with model simulations of the CH4 latitudinal gradient suggests either that the models do not get a correct balance between high and low latitude CH4 sources, or that the filtered CH4 profile from the ER cores remains biased by small artifacts.©Author(s) 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49350
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Hou S.,Chappellaz J.,Raynaud D.,et al. A new Himalayan ice core CH4 record: Possible hints at the preindustrial latitudinal gradient[J]. Climate of the Past,2013-01-01,9(6)