The latest APHRODITE data is available at our website only. Please receive the data updates and the latest information at aphrodite.st.hirosaki-u.ac.jp. For users convenience, all users are required to register, even though it is within a laboratory use only. It is strictly prohibited to provide data to non-registered users.

FRASE NO VÁLIDA BITCOIN

2023.11.22
The web server will be temporarily stopped from 3:00 p.m. on November 22 to 9:00 a.m. on November 24(Japan time) due to a power outage.
2022.03.22
The web server will be temporarily stopped from 9:00 a.m. to 2:00 p.m. on March 24(Japan time) for maintenance.
2022.03.08
The web server will be temporarily stopped from 11:00 a.m. on March 11 to 9:00 a.m. on March 14(Japan time) due to a power outage.
2022.01.04
The web server will be temporarily stopped from 11:00 a.m. on January 7 to 9:00 a.m. on January 11(Japan time) due to a power outage.
2021.10.13
We will shutdown the web server from 12:00 p.m. to 3:00 p.m. JST (3:30-6:00 UTC) on 13 October for maintenance. We apologize for the inconvenience in advance.
2020.09.18
The web server will be temporarily stopped from in the afternoon on Sep. 18th to in the morning on Sep. 23th (Japan time) due to a power outage. You can not download the data during this time.
2020.07.27
Publication List was updated.
2020.03.02
APHRODITE-3 workshop ended successfully! Thank you for the participation!! (member's page)
2019.12.03
We have already chosen the successful candidates who get our financial support to attend APHRODITE-3 workshop, and now it is closed.
2019.11.26
We released V1801(JP) daily adjusted precipitation.
2019.11.14
We will have APHRODITE-3 workshop (February 14-21, 2020).
2019.11.14
APHRODITE-3 Project has just started!
2019.06.25
Publication List was updated.
2019.04.19
We released V1901(MA) daily precipitation and climatology.
2019.03.29
APHRODITE-2 funding ended. You are welcome to send comments/questions at aphrodite.precinfo@gmail.com; however, our support will not be as frequent as we were.
2018.11.13
We will have a maintenance of the web server from 9:30 to 10:30 JST (0:30-1:30 UTC) on 13 November. We apologize for the inconvenience in advance.
2018.11.09
We released V1801_R1(MA).
2018.09.27
We released V1801_MA, V1101EX, V1808_MA (temperature), and APHRO_JP (V1207R3).
2018.08.29
"gate io"was held.
2018.06.08
We hosted a session "Precipitation Extremes -- Observations, Modelling, Projections (AS29)" at AOGS2018 in Hawaii.
2018.05.23
We hosted a session "Precipitation Extreme (A-AS05)" at gate io.
2018.05.16
APHRODITE-2 Hirosaki Workshop was held.
2017.10.10
APHRODITE-2 project got high grade (A) at the interim evaluation.
2017.09.14
APHRODITE-2 workshop (11-14 Sep.2017) was held in Chiba University.
2017.09.01
APHRODITE-2 workshop will be held in Kathmandu, Nepal, this November.
2017.07.24
We released APHRO_JP update.
2017.06.01
We will have APHRODITE-2 workshop (11-14 Sep.2017)
2017.03.08
International workshop was held on March 7th & March 8th in 2017.
Location: TKP Kyoto Shijokarasuma Kaigishitsu.
2016.10.06
Advisory board meeting was held in Tokyo.
2016.07.13
Kick-off meeting was held in Hirosaki.
2016.06.01
APHRODITE-2 Project has just started!
2016.04.14
APHRODITE homepage is renewed!

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The APHRODITE project aims to create accurate daily grid precipitation data over Asian land areas with a high spatial and temporal resolution based on rain-gauge observations. The APHRODITE-2 project, funded by the Ministry of Environment of Japan, started in June 2016 and will continue until March 2019. Hirosaki University, Kyoto University and Chiba University are now collaborating for the further development of the APHRODITE algorithm.

One of today's greatest concerns is the future hydrometeorological conditions as a consequence of human-induced climate change.The increase in extreme events is especially a focus of international scientific and political frameworks, such as the World Climate Research Programme ( WCRP ) and IPCC. The APHRODITE products ( Yatagai et al., 2009; Kamiguchi et al. 2010; Yasutomi et al. 2011; Yatagai et al. 2012 ) are used for many climatological and hydrological studies, including the downscaling of low-resolution model data, and for validating satellite observations.

The well-known APHRODITE precipitation data are hence expected to be used in the evaluation of extreme events. However, conflicting " end-of-day "times is one issue that must be resolved for further usage of APHRODITE data ( e.g. comparisons with disaster records, combined use with satellite estimates, statistical analyses ).

We therefore apply a time adjustment within APHRODITE-2, and evaluate the change of extreme statistics according to gridding process and the time adjustment. Furthermore, we compare meteorological conditions, such as heavy rainfall, APHRODITE precipitation and disaster events, to help understand and improve the forecasting of extreme events, thereby producing an improved APHRODITE algorithm. These efforts will inform decision making at a political level with regard to the risk associated with hydrological changes as a result of global warming. For example, the change in extreme precipitation events and river runoff.

Development of the APHRODITE algorithm is based on discussions with various users, including climate modelers and developers of satellite precipitaion algorithms. We welcome feedback from users, as well as any kind of cooperation, especially with regard to the sharing of observational data.