In this study we created a daily mean gridded temperature
dataset of high resolution. The input data, QC
and interpolation system developed for the APHRODITE
precipitation product work properly with some modifications.
The climatology data and monthly means of the
product are comparable to those of other monthly mean
gridded temperature datasets. This dataset is useful not
only for improved evaluation of daily series of reanalysis
data, satellite data and model outputs, but also monitoring
of long-term change and statistical analysis of
extreme weather.
Rain/snow discrimination is added to precipitation
data as a ratio of 0.05 degree grids in a snowing condition
in each 0.50 degree grid. The TSP amount for the
extended winter season is derived for estimating the
validity of the discrimination. It can be seen that the TSP
amount reproduces the snow cover extent observed from
satellites well. The rain/snow information is necessary
for the accurate estimation of precipitation amounts
observed from satellites, since microwave reflections
from rainfall and snowfall differ. It also offers new
applications to many research fields such as water
resource management as use as an input in flow models.
The data periods of gridded temperature datasets
might be too short for analyzing global changes. Station
observations in East Asia (e.g., Japan, China and Taiwan)
are available for the period of 1951-2007. There is room
to extend the analysis, currently limited to East Asia, and
the data period. On the other hand, evaluation from a
statistical point of view is insufficient. This will be an
issue for future studies.
In this study we created a daily mean gridded temperature
dataset of high resolution. The input data, QC
and interpolation system developed for the APHRODITE
precipitation product work properly with some modifications.
The climatology data and monthly means of the
product are comparable to those of other monthly mean
gridded temperature datasets. This dataset is useful not
only for improved evaluation of daily series of reanalysis
data, satellite data and model outputs, but also monitoring
of long-term change and statistical analysis of
extreme weather.
Rain/snow discrimination is added to precipitation
data as a ratio of 0.05 degree grids in a snowing condition
in each 0.50 degree grid. The TSP amount for the
extended winter season is derived for estimating the
validity of the discrimination. It can be seen that the TSP
amount reproduces the snow cover extent observed from
satellites well. The rain/snow information is necessary
for the accurate estimation of precipitation amounts
observed from satellites, since microwave reflections
from rainfall and snowfall differ. It also offers new
applications to many research fields such as water
resource management as use as an input in flow models.
The data periods of gridded temperature datasets
might be too short for analyzing global changes. Station
observations in East Asia (e.g., Japan, China and Taiwan)
are available for the period of 1951-2007. There is room
to extend the analysis, currently limited to East Asia, and
the data period. On the other hand, evaluation from a
statistical point of view is insufficient. This will be an
issue for future studies.