Technical

Reports

theMRI，No．422001

A．PrefaceThis

technical

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Department

reportdescribesofMeteorologicalJapanMeteorologicalNPD

todevelopInMRI，1991）
tool

wasand

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miHed

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mesoscaleinwas

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eta1．，1994）andrealisticallycompressible

orographic

simulateequations

developed

mesoscaleincludingequations，where

the玉inearlization

timescheme（HI−VIsemi−implicit

Furthermore，theBox−LagrangianrainSaito，1995），thepredictionofgroundtemperature（Kato，1996），themodifie（icentered（Kato，1998），two

atmosphericradiation

a1．，1999），痂．，werethemode1．Thesemodi丘cations

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Saito，snowfa11（Saitoaconvectiveain1997，andmode1，supposingal．（1999），andsystem（Muroi

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the

Technical

Reports

theMRI，No．422001

future．

Alargemmberofscientistshavecontributedtodevelopingthismode1．Wethankthesta狂ofMRIandNPD
forsupporting

Researchourmodeling

Departmentofwork．Speci且cally，M．Yoshizaki，Head

MRI，gaveus

invaluablecomments

oftheFirst

andcontinuous

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Hasegawa，H．Koga，S．Otsuka，S．Yoshizumi，H．Kondo，T．Maruyama，Mthealso

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thankWada，H。Nakamura，KR

Aonashi，

H．Seko，K．Kurihara，T．Tamiya，F．Fujibe，H．Kanehisa，M．Ueno，A．Murata，W。Mashiko，N．Seino，A．
Yamamoto

andM

MurakamiofMRI

for

theirhelpanddiscussions．We

Sato，T．Iwasaki，T．Tsuyuki，M．Nakamura，M．Nagata，H．Gouda
courtesy

indevelopedwithlate

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