搜索结果: 1-12 共查到“地球科学总论 estimating”相关记录12条 . 查询时间(0.062 秒)
Uncertainties in estimating regional methane emissions from rice paddies due to data scarcity in the modeling approach
estimating regional methane emissions rice paddies
2014/12/18
Rice paddies are a major anthropogenic source
of the atmospheric methane. However, because of the high
spatial heterogeneity, making accurate estimations of the
methane emission from rice paddies i...
Estimating soil organic carbon stocks of Swiss forest soils by robust external-drift kriging
Swiss forest soils robust external-drift kriging
2014/12/18
Accurate estimates of soil organic carbon (SOC)
stocks are required to quantify carbon sources and sinks
caused by land use change at national scale.
Determining Angstrom Constants for Estimating Solar Radiation in Malawi
Solar Radiation Angstrom Constants Sun-Shine Hours
2013/3/7
This paper discusses a procedure that was adopted for the development of a linear regression model for estimating solar radiation in Malawi. By making use of sunshine-hours data recorded at six select...
Errors of Estimating Near-Surface Q-A statistical Approach
Q Near Surface Spectral Ratio Seismic Statistical Errors
2013/3/6
Although various estimating methods have been developed for measuring Q from near-surface seismic data, less thought has been given to the accuracy of Q obtained. The errors of Q depend on the ways of...
A spatial resolution threshold of land cover in estimating terrestrial carbon sequestration in four counties in Georgia and Alabama, USA
land cover terrestrial carbon sequestration Georgia and Alabama, USA
2010/1/21
Changes in carbon density (i.e., carbon stock per unit area) and land cover greatly affect carbon sequestration. Previous studies have shown that land cover change detection strongly depends on spatia...
Estimating basal properties of ice streams from surface measurements:a non-linear Bayesian inverse approach applied to synthetic data
basal properties ice streams surface measurements non-linear Bayesian inverse approach
2010/2/4
We propose a new approach to indirectly estimate basal properties of ice streams, i.e. bedrock topography and basal slipperiness, from observations of surface topography and surface velocities. We dem...
Estimating mass-wasting processes in active earth slides–earth flows with time-series of High-Resolution DEMs from photogrammetry and airborne LiDAR
mass-wasting processes active earth slides earth flows time-series High-Resolution DEMs
2009/12/16
This paper deals with the use of time-series of High-Resolution Digital Elevation Models (HR DEMs) obtained from photogrammetry and airborne LiDAR coupled with aerial photos, to analyse the magnitude ...
Climatological aspects of the extreme European rainfall of August 2002 and a trajectory method for estimating the associated evaporative source regions
Climatological aspects the extreme European rainfall a trajectory method the associated evaporative source regions
2009/12/14
During the first half of August 2002, a sequence of extreme precipitation episodes affected many regions of central and southern Europe, culminating in one of the most severe flooding events ever expe...
Estimating mass-wasting processes in active earth slides–earth flows with time-series of High-Resolution DEMs from photogrammetry and airborne LiDAR
mass-wasting processes active earth slides earth flows time-series High-Resolution DEMs
2009/12/8
This paper deals with the use of time-series of High-Resolution Digital Elevation Models (HR DEMs) obtained from photogrammetry and airborne LiDAR coupled with aerial photos, to analyse the magnitude ...
Estimating the storage of anthropogenic carbon in the subtropical Indian Ocean:a comparison of five different approaches
anthropogenic carbon subtropical Indian Ocean five different approaches
2010/1/19
The subtropical Indian Ocean along 32° S was for the first time simultaneously sampled in 2002 for inorganic carbon and transient tracers. The vertical distribution and inventory of anthropogenic carb...
We developed a technique for studying seasonal and interannual variation in pyrogenic carbon emissions from Africa using a modelling approach that scales burned area estimates from L3JRC, a map recent...
Statistical and neural classifiers in estimating rain rate from weather radar measurements
Statistical and neural classifiers rain rate weather radar measurements
2010/1/26
Weather radars are used to measure the electromagnetic radiation backscattered by cloud raindrops. Clouds that backscatter more electromagnetic radiation consist of larger droplets of rain and therefo...