AWRA-L input spatial layers at ~1 km and ~5 km resolutions: Source data and comparison between 1 km and 5 km resolutions

[摘要] The AWRA-L model requires a number of spatial data layers for climate, vegetation, land surface and soil properties. The older versions of AWRA-L (v5.0 and earlier) have been implemented across Australia at 0.05o (~5 km) spatial resolution. The CSIRO and the Bureau of Meteorology are currently implementing AWRA-L at 0.01o (~1 km) spatial resolution across the Murrumbidgee river basin and also increasing the number of hydrological response units (HRUs) from two (representing shallow and deep rooted vegetation) to five (representing shallow and deep rooted vegetation along with impervious areas, large water bodies and irrigated agricultural areas). This document provides brief description of each of the spatial layers (including the source data used to derive the layers) that will be used in the current AWRA-L implementation in Murrumbidgee. The spatial layers are generated at both 1 km and 5 km spatial resolutions for the Murrumbidgee river basin and a simple/visual comparison is undertaken to show/highlight the spatial variability of the 1 km data layer within the 5 km grids. The methodology for estimating soil hydraulic properties at 1 km and 5 km grids using pedotransfer functions and digital soil mapping is described in Appendix A.

[发布日期] 2016-09-30 [发布机构] CSIRO

[学科分类] 地球科学(综合)