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美国论文代写:燃料湿度

美国论文代写:燃料湿度

所解释的三种类型的燃料湿度代码是基于日常时间步骤而被仔细考虑的,并且具有前几天的燃料湿度代码值作为重要输入以便导出当前的代码。这种输入机制使得计算燃料水分代码的过程依赖于反馈过程,并且这个前驱值被并入到森林环境的FWI值中。基于这种具有反馈值作为输入的FWI系统,测量各种森林燃料的干燥速率。燃料干燥速度的测量基本上是燃料在平衡量上失去1-e-1(约2/3)的自由水分的过程中所花费的时间延迟。以上所示的表2列出了一些时间滞后,这些滞后表示基于通过评估不同的其他输入值而获得的近似定理表示合理的时间滞后量,因为时间滞后是取决于多个不同的因素(例如一年的时间,森林的纬度,以及各种气象投入)。

全国中位数关系

在本节中,FFDI和FWI系统之间的关系通过两个系统的百分比值进行评估。这是通过比较一个特定的FWI值和相同输入的FFDI值得到的(Mölders,2010)。它基于具有与FFDI的提供或观测值相同的百分比值的FWI值的选择。澳大利亚每个网格点的每个指标值都是独立计算的。图2显示了这种比较,其中三个FFDI值12,24和50是指FFDI值从火灾危险类别的高,极高和极端水平的过渡。

美国论文代写:燃料湿度

The explained three types of fuel moisture codes are deliberate on basis of a daily time-step, and have the fuel moisture code values of the previous days as a vital input in order to derive the codes for the present day. This type of input mechanism makes the process of calculating the Fuel Moisture Codes relied on a feedback process and this precursor value is incorporated into the FWI value of the forest environment. Based on this FWI system having feedback values as input, the drying rate for the various types of forest fuels are measured. A measurement of the rate at which the fuel is drying is essentially the delay in time that it taken in process of the fuel losing 1- e-1(about 2/3rd) of the free moisture in the fuel over the equilibrium amount. The above shown table 2 is listing some time lags which represent a reasonable amount of time lag based on approximation theorems which is obtained by assessment of different other input values, as the time lag is a value that is depending on a number of different factors (for example- time of the year, latitude of the forest, and the various meteorological inputs).

The national median relationship

In this section, the relationship between the FFDI and FWI systems is assessed by means of percentile values of the two systems. This is obtained by comparing a particular FWI value with an FFDI value for the same inputs (Mölders, 2010). It is based on the selection of the FWI value that is having the same percentile value as a provided or observed value of FFDI. The values for each indices are calculated independently for each grid point all over Australia. This comparison is shown in the figure 2, where the three FFDI values 12, 24 and 50 refers to the transition of FFDI value from high, very high and extreme levels of fire danger categories.