This chapter defines weather as short-term processes that result in variations in the atmospheric conditions ranging from minutes to a fire season.
Differences in methodologies for determining the weathering component in natural environments, inherent differences in weathering rates of different minerals, and mineral heterogeneity often cause difficulties in defining the weathering component of different catchments or aquifer systems.
In the aboveground aerial environment, the Weather module defines the weather conditions above a canopy, and MicroWeather defines the vertical profiles of micro-meteorological variables in a canopy.
Therefore, in this study, we defined a weather fluctuation as a cold spell if the minimum daily temperature fell below the 5th percentile of temperatures recorded at that location from January 2006 through December 2009 for at least 5 consecutive days.
We tested whether a species' range size, biogeographic affiliation or movement strategy influenced the relative importance of weather vs. climate variables in defining a species distribution.
In our previous study, we defined "a weather fluctuation as a cold spell if the minimum daily temperature fell below the 5th percentile of temperatures recoded at that community from January 2006 through December 2009 for at least 5 consecutive days" [ 3].
Thermal sensation was defined by weather, personal and psychological factors.
While it may be fairly easy (at least in principle) to define specific weather extremes and ask how they are changing, it's less easy to define some scientific weirdness scale and ask whether the totality of recent events tips it or not.
Storms and substorms are major constituents of geomagnetic activity and play a crucial role in efforts to define space weather (Kamide et al., 1998; Freeman, 2001; Angelopoulos et al., 2008).
The slight but significant difference in timing and weather at Peak in the largest epidemics may define optimum weather requirements for supporting highest levels of transmission in Thailand.
