However, regression techniques have limited application to sub-annual data sets.
Representation of distributed surface and subsurface hydrology within CLiDE is suited to simulation at sub-annual to centennial time-scales.
The study of the regional dynamics of air masses and accompanying fronts on a sub-annual basis is called meteorology.
However, due to the different methods used to assess the impact of forest cover at the annual and sub-annual timescale general conclusions can be difficult to draw.
Since 2002, the headwaters of the Colorado River and nearby basins have experienced extensive changes in land cover at sub-annual timescales.
In generating synthetic time series of hydrological processes at sub-annual scales, it is important to preserve seasonal characteristics and short-term persistence.
This study has evaluated a long-term hydrological monitoring record from a series of extensive green roof test beds to identify long-term evolutions and sub-annual (seasonal) variations in potential hydrological performance.
Because of this practice a central concern for sustainable squid fisheries in California is to determine whether reproductive activities and subsequent egg laying occur at rates that are sufficient to support harvestable populations of this sub-annual species.
Designed and operated at the University of Maine's Climate Change Institute, the facility can analyze layers thin enough to coincide with sub-annual time periods, even in highly compressed ice.
Results of this study suggest that local watershed-scale processes, such as groundwater storage in limestone and alluvial strata, dynamic infiltration flow paths, and soil moisture conditions, produce a threshold-driven hydrologic response, decoupling the headwater hydrologic regimes from sub-annual weather patterns.
This involved the separation of independent sub-annual maxima by storm mechanism, determining the Weibull shape parameter k, preconditioning for fastest convergence using k, fitting each mechanism to the Fisher Tippet Type I distribution and synthesising the composite extreme-value distribution.
