Data from: Development of a gridded meteorological data set over the Java island, Indonesia 1985-2014

We describe a gridded daily meteorology dataset consisting of
precipitation, minimum and maximum temperature over Java Island, Indonesia
at 0.125°×0.125° (~14 km) resolution spanning 30 years from 1985–2014.
Importantly, this data set represents a marked improvement from existing
gridded data sets over Java with higher spatial resolution, derived
exclusively from ground-based observations unlike existing satellite or
reanalysis-based products. Gap-infilling and gridding were performed via
the Inverse Distance Weighting (IDW) interpolation method (radius, r, of
25 km and power of influence, α, of 3 as optimal parameters) restricted to
only those stations including at least 3,650 days (~10 years) of valid
data. We employed MSWEP and CHIRPS rainfall products in the
cross-validation. It shows that the gridded rainfall presented here
produces the most reasonable performance. Visual inspection reveals an
increasing performance of gridded precipitation from grid, watershed to
island scale. The data set, stored in a network common data form (NetCDF),
is intended to support watershed-scale and island-scale studies of
short-term and long-term climate, hydrology and ecology.