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Diurnal variations of polar organic tracers in summer forest aerosols: A case study of a Quercus and Picea mixed forest in Hokkaido, Japan
secondary organic aerosol isoprene 2-methyltetrols levoglucosan
2017/4/12
We investigated the summertime formation of secondary organic aerosols (SOA) via the oxidation of isoprene, α/β-
pinene and β-caryophyllene in a Quercus crispula and Picea glehnii mast mixed forest l...
Effects of needleleaf forest cover on radiation and snowmelt dynamics in the Canadian Rocky Mountains
radiation snowmelt dynamics Canadian Rocky Mountains
2014/4/3
Radiation is the main energy source for snowpack warming and melt in mountain needleleaf forests, and runoff
from these forests is the main contributor to spring river flows in western North America....
The Chemistry of Atmosphere-Forest Exchange (CAFE) Model – Part 2: Application to BEARPEX-2007 observations
Atmosphere-Forest Exchange (CAFE) Model BEARPEX-2007 observations
2011/2/25
In a companion paper, we introduced the Chemistry of Atmosphere-Forest Exchange (CAFE) model, a vertically-resolved 1-D chemical transport model designed to probe the details of near-surface reactive ...
Evidence for a significant proportion of Secondary Organic Aerosol from isoprene above a maritime tropical forest
a significant proportion Secondary Organic Aerosol isoprene a maritime tropical forest
2011/2/25
Isoprene is the most abundant non-methane biogenic volatile organic compound (BVOC), but the processes governing secondary organic aerosol (SOA) formation from isoprene oxidation are only beginning to...
Research of an Automatic Forest Fire Detection System Based on Cooperative Perception
CCD Camera Cooperative Perception Fire Detection System Forest Fire Ultraviolet
2011/12/21
This paper proposes a distributed intelligent system for forest fire detection based on integration of information from several distributed sensors. An automatic fire detection system with ultraviolet...
Simultaneous HONO measurements in and above a forest canopy: influence of turbulent exchange on mixing ratio differences
HONO measurements a forest canopy turbulent exchange ratio differences
2011/2/24
We have combined chemical and micrometeorological measurements to investigate the formation and distribution of HONO throughout a forest canopy. HONO was measured simultaneously at two heights, close ...
Californian forest fire plumes over Southwestern British Columbia: lidar, sunphotometry, and mountaintop chemistry observations
Californian forest fire Southwestern British Columbia mountaintop chemistry
2011/1/20
Forest fires in Northern California and Oregon were responsible for two significant regional scale aerosol transport events observed in southern British Columbia during summer 2008. A combination of g...
The Chemistry of Atmosphere-Forest Exchange (CAFE) Model – Part 1: Model description and characterization
Atmosphere-Forest Exchange (CAFE) Model Model description and characterization
2011/1/19
We present the Chemistry of Atmosphere-Forest Exchange (CAFE) model, a vertically-resolved 1-D chemical transport model designed to probe the details of near-surface reactive gas exchange. CAFE integr...
Effects to Forest Fire Occurrence of Climate Change in Ta He Forestry Bureau in Great Xing’an Mountain
Climate Change Forest Fire Great Xing’an Mountain Julian Date Ta He
2011/12/16
Forest fire is one of the most important ecological factors in the forest ecosystem. The Great Xing’an Mountain region has not only the largest forest areas, but also the biggest forest fire burned ar...
Forest Biomass Estimation Based on Forest Inventory Data in Middle and Last Scales
Forest Biomass Forest Inventory Data Maoershan Forest Farm
2011/12/20
The forest biomass (which is referred to the arbor aboveground biomass in this research) is one of the most primary factors to determine the forest ecosystem carbon storages. There are many kinds of e...
Spatial Patterns of Lightning-Ignited Forest Fires in Daxing’an Mountains, Heilongjiang Province, China, 1973-1997
Daxing'an Mountains K-Function Lightning Fire Spatial Statistics
2011/12/16
The spatial pattern of forest fire locations is of interest for fire occurrence prediction. A spatial statistical analysis of lightning-caused fires in the province of Heilongjiang, China, between 197...
Ground-based remote sensing of an elevated forest fire aerosol layer at Whistler, BC: implications for interpretation of mountaintop chemistry
an elevated forest fire aerosol layer mountaintop chemistry
2010/12/28
On 30 August 2009, intense forest fires in interior British Columbia (BC) coupled with winds from the east and northeast resulted in transport of a broad forest fire plume across southwestern BC. The ...
Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997–2009)
Global fire deforestation savanna forest agricultural peat fires
2010/12/28
New burned area datasets and top-down constraints from atmospheric concentration measurements of pyrogenic gases have decreased the large uncertainty in fire emissions estimates. However, significant ...
The Signatures of Large-scale Temperature Fluctuations in the Lyman-alpha Forest
Large-scale Temperature Fluctuations the Lyman-alpha Forest
2011/1/11
It appears inevitable that reionization processes would have produced large-scale temperature fluctuations in the intergalactic medium. Using toy temperature models and detailed heating histories in c...
Embedding a Forest in a Graph
Embedding Graph
2010/11/22
For \math{p\ge 1}, we prove that every forest with \math{p} trees whose sizes are $a_1,..., a_p$ can be embedded in any graph containing at least $\sum_{i=1}^p (a_i + 1)$ vertices and having a minimum...