Atmosphere-soil-vegetation model including CO exchange processes; SOLVEG2

Nagai, Haruyasu

JAERI-Data/Code 2004-014, 92 Pages, 2004/11

JAERI-Data-Code-2004-014.pdf:11.03MB

A new atmosphere-soil-vegetation model named SOLVEG2 (SOLVEG version 2) was developed to study the heat, water, and CO exchanges between the atmosphere and land-surface. The model consists of one-dimensional multilayer sub-models for the atmosphere, soil, and vegetation. It also includes sophisticated processes for solar and long-wave radiation transmission in vegetation canopy and CO exchanges among the atmosphere, soil, and vegetation. The model can be also used by coupling with a three-dimensional atmosphere model. In this paper, details of SOLVEG2, which includes the function of coupling with atmosphere model MM5, are described.

Overview of the 1994 chronic HT release experiment at Chalk River

P.A.Davis*; W.J.G.Workman*; B.D.Amiro*; F.S.Spencer*; Noguchi, Hiroshi; Amano, Hikaru; Ichimasa, Yusuke*; Ichimasa, Michiko*

Fusion Technology, 28, p.840 - 845, 1995/10

no abstracts in English

Leaf surface wetness measurements on Norway spruce

Held, A.*; Katata, Genki

no journal, , 

Leaf surface wetness is an important factor in meteorological, agricultural, and environmental studies of plant-atmosphere exchange processes. Here, we present leaf wetness measurements using electrical sensors clipped directly to Norway spruce needles, and deposition estimates of inorganic ions to Norway spruce needles determined by a leaf-washing technique. The measurements were carried out at the Waldstein ecosystem research site of the University of Bayreuth. Leaf surface wetness was compared with relative humidity and wind speed, two key meteorological controls of leaf surface wetness. Finally, a trial calculation of the multi-layer atmosphere-soil-vegetation model SOLVEG was compared with the observed data. Overall, leaf surface wetness affects diverse phenomena such as vegetation-atmosphere water exchange or deposition fluxes to vegetation surfaces, which must be further explored in interdisciplinary research projects.