Eddy covariance measurement of CO2 flux to the atmosphere from an area of high volcanogenic emissions, Mammoth Mountain, California

被引：34

作者：

Anderson, DE

Farrar, CD

机构：

[1] US Geol Survey, Denver Fed Ctr, Denver, CO 80225 USA

[2] US Geol Survey, Carnelian Bay, CA USA

来源：

CHEMICAL GEOLOGY | 2001年 / 177卷 / 1-2期

关键词：

carbon dioxide; carbon dioxide flux; volcanic degassing; eddy covariance; Mammoth Mountain;

D O I：

10.1016/S0009-2541(00)00380-6

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Three pilot studies were performed to assess application of the eddy covariance micrometeorological method in the measurement of carbon dioxide (CO2) flux of volcanic origin. The selected study area is one of high diffuse CO2 emission on Mammoth Mountain, CA. Because terrain and source characteristics make this a complex setting for this type of measurement, added consideration was given to source area and upwind fetch. Footprint analysis suggests that the eddy covariance measurements were representative of an upwind elliptical source area (3.8 X 10(3) m(2)) which can vary with mean wind direction, surface roughness, and atmospheric stability. CO2 flux averaged 8-16 mg m(-2) s(-1) (0.7-1.4 kg m(-2) day(-1)). Eddy covariance measurements of flux were compared with surface chamber measurements made in separate studies [Geophys. Res. Lett. 25 (1998a) 1947; EOS Trans. 79 (1998) F941.] and were found to be similar. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：31 / 42

页数：12

共 30 条

[1] EDDY-CORRELATION MEASUREMENTS OF CO2, LATENT-HEAT, AND SENSIBLE HEAT FLUXES OVER A CROP SURFACE [J].