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223<br />

experiment of recreating the present climate was done. In<br />

addition to this, at University of Tsukuba (Kusaka et al.,<br />

2008), a pseudo global warming experiment was done by<br />

using the result of the MIROC-HI model as the boundary<br />

and they succeeded in showing the future increase in the<br />

temperature in the Tokyo metropolitan district as shown in<br />

figure 5.<br />

(a)<br />

(b)<br />

Fig. 4: Frequency histogram of the daily total precipitation<br />

(a) and dayly mean temperature (b). Black dots: AWS<br />

observation, blue line: MRI-NHM original value, green line:<br />

Corrected the total value, red: corrected also the frequency.<br />

The value of one prefecture in Japan is displayed (Tanaka,<br />

2009, personal communication).<br />

Fig. 5: The temperature increase of August to 2070, by<br />

using TERC-RAMS model nested into the MIROC AO-<br />

GCM by using PGWM. The map is around the metropolitan<br />

area of Japan (Kusaka et al., 2008)<br />

We also apply statistical downscaling method to get the<br />

finer structure up to 1km grid, in the rural area. We try to<br />

get the projection data accurate enough to drive the impact<br />

model of both hydrology and agriculture.<br />

4. The response to the present results<br />

This is the report mainly about the comments made in the<br />

meeting for the advisory report base on remarks by those<br />

who represent various institutions. The prediction<br />

information with specific names of different places gave a<br />

strong impact to media representatives. As far as the<br />

regional climate model is concerned, assessment was<br />

conducted in each prefecture respectively and the method<br />

of evaluating warming of the climate in each prefecture<br />

was presented, to which many people took a strong<br />

interest. And when using the urban model, we were able<br />

to produce an almost pinpointing prediction result, which<br />

gave a very strong impression on many people. We think<br />

that this resulted from the method in which we presented<br />

it, but it seemed to give a good impression.<br />

Acknowledgements<br />

This work was supported by the Global Environment<br />

Research Fund (S-5-3) of the Ministry of the Environment,<br />

Japan. We are deeply grateful to all the members<br />

participating to this project.<br />

References<br />

Aoyagi, T. and N. Seino, A sensitivity study on<br />

anthropogenic heat release and building / street<br />

aspect ratio using a mesoscale model in Tokyo<br />

Metropolitan area, Japan. 89th American<br />

Meteorological Society Annual Meeting, P1.4. 2009.<br />

Dairaku, K., S. Iizuka, W. Sasaki, R. A. Pielke Sr, and A.<br />

Beltran, Assessment of dynamical downscaling in<br />

river basins in Japan using the Regional<br />

Atmospheric Modeling System (RAMS). RCM2009,<br />

2009.<br />

Hara, M., T. Yoshikane, H. Kawase, and F. Kimura,<br />

Estimation of the impact of global warming on snow<br />

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East Asian cyclogenesis using a general circulation<br />

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Yasunari, B. Ailikun, H. Ueda, and T. Inoue,<br />

Assessment of future changes in the Baiu rainband<br />

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method, J. Geophisical Letters, 2009 (submitted).<br />

Kusaka, H., S. Adachi, F. Kimura, M. Hara, and T. Hanyu,<br />

Urban climate prediction using the regional climate<br />

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Association of Japanese Geographers, 2008.<br />

Murazaki K., Kazuo Kurihara, Hidetaka Sasaki, Izuru<br />

Takayabu, Takao Uchiyama. A Regional climate<br />

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WCRP International Conference on Reanalysis, P2-<br />

22, 2008<br />

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Preliminary experiments of reproducing the present<br />

climate using the non-hydrostatic regional climate<br />

model, SOLA, Vol.4, pp. 025-028, 2008<br />

Takayabu I., and N. Ishizaki. An impact of weather events<br />

on the reproducibility of local climate with<br />

MRI/JMA non-hydrostatic regional climate model,<br />

AGU fall meeting GC53A-0689, 2008.

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