Search Results 1-20 of 372

  • Surface air temperature response to large-scale volcanic eruptions and its relationship with ENSO  [in Japanese]

    Kitabayashi Sho , Takahashi Hiroshi G.

    <p>1. はじめに</p><p> 火山噴火は気候変動を引き起こす主要な自然現象の一つである.大規模な火山噴火が発生すると,噴煙は成層圏にまで達し,硫酸エアロゾルが成層圏に放出される.その硫酸エアロゾルが太陽放射を散乱・吸収することで,地表面付近で気温が下がることが知られている(Robock, 2000).硫酸エアロゾルは成層圏の低緯度から高緯度へと向かう循環に …

    Proceedings of the General Meeting of the Association of Japanese Geographers 2020s(0), 239, 2020

    J-STAGE 

  • Thermal Environment Design of Outdoor Spaces by Examining Redevelopment Buildings Opposite Central Osaka Station

    Takebayashi Hideki

    … Surface temperatures on the ground and wall were calculated based on the surface heat budget equation in each 2 m size mesh of the ground and building wall surface. … Incident solar radiation was calculated using ArcGIS and building shape data. … SET* reduction was the highest by solar radiation shading, followed by surface material change and ventilation. …

    Climate 7(12), 143, 2019-12

    IR 

  • Multi-model evaluation of the sensitivity of the global energy budget and hydrological cycle to resolution

    松枝 未遠 , Benoît Vannière , Marie-Estelle Demory , Pier Luigi Vidale , Reinhard Schiemann , Malcolm J. Roberts , Christopher D. Roberts , Mio MATSUEDA , Laurent Terray , Torben Koenigk , Retish Senan

    … The main changes in the global energy budget with resolution are a systematic increase in outgoing longwave radiation and decrease in outgoing shortwave radiation due to changes in cloud properties, and a systematic increase in surface latent heat flux; … We discuss our results against several observational estimates of the Earth's energy budget and hydrological cycle and show that they support recent high estimates of global precipitation. …

    Climate dynamics 52(11), 6817-6846, 2019-06

    IR 

  • PROPOSAL OF LAKE WATER TEMPERATURE SIMULATION METHOD WITH UNCERTAINTY IN EMISSIVITY OF UPWARD LONG WAVE RADIATION BASED ON STOCHASTIC PROCESS THEORY  [in Japanese]

    綿貫 翔 , 山田 正

    地球環境研究論文集 : 地球環境シンポジウム 27, 419-425, 2019

  • PROPOSAL OF LAKE WATER TEMPERATURE SIMULATION METHOD WITH UNCERTAINTY IN EMISSIVITY OF UPWARD LONG WAVE RADIATION BASED ON STOCHASTIC PROECSS THEORY  [in Japanese]

    WATANUKI Akira , YAMADA Tadashi

    <p> 本研究では,確率過程論を熱収支法に適用し,水温を推定するまでの過程に不確実性を考慮する理論的な枠組みを提案する.その一例として,上向き長波放射量の射出率に不確実性を入れ,水温の推定分布を計算する.また,確率論的に水温を求めるのとは別に,決定論的に,平均値と平均値±分散の計3種類の射出率で水温を推定し,確率論的に求めた結果と比較した.最後に,推定した水温の分布の応用性についても説 …

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 75(5), I_419-I_425, 2019

    J-STAGE 

  • JAMSTEC Model Intercomparision Project (JMIP)

    Kodama Chihiro , Kuwano-Yoshida Akira , Watanabe Shingo , Doi Takeshi , Kashimura Hiroki , Nasuno Tomoe

    … We focus on the climatology and variability of precipitation and its associated phenomena, including the basic state, the energy budget of the atmosphere, extratropical cyclones, teleconnection, and the Asian monsoon. … In many respects, NICAM.12 shows unique characteristics, such as the distributions of precipitation, shortwave radiation, and explosive extratropical cyclones and the onset of the Asian summer monsoon. …

    JAMSTEC Report of Research and Development 28(0), 5-34, 2019

    J-STAGE 

  • PREDICTING TURF THERMAL ENVIRONMENT IN SPORTS STADIUMS USING COUPLING ANALYSIS OF RADIATION, CONVECTION, AND MOISTURE BASED ON ITERATIVE PARTITIONED METHOD  [in Japanese]

    SATO Taiki , YANESHITA Makoto , OGURO Masayuki

    … This analysis carries out the coupled simulation of radiation, convection, moisture transport, and heat budget of the turf surface for the prediction of the thermal environment near the turf surface and the condition of turf surface. … The iterative partitioned method enables the unsteady coupled simulation of radiation, convection, moisture transport, and heat budget of the turf surface. …

    Journal of Environmental Engineering (Transactions of AIJ) (754), 965-974, 2018-12

    J-STAGE  AIJ 

  • The ARASE (ERG) magnetic field investigation

    Matsuoka Ayako , Teramoto Mariko , Nomura Reiko , Nosé Masahito , Fujimoto Akiko , Tanaka Yoshimasa , Shinohara Manabu , Nagatsuma Tsutomu , Shiokawa Kazuo , Obana Yuki , Miyoshi Yoshizumi , Mita Makoto , Takashima Takeshi , Shinohara Iku

    … The MGF makes measurements at a sampling rate of 256 vectors/s, and the data are averaged onboard to fit the telemetry budget. … Magnetic field observation by the MGF will significantly improve our knowledge of the growth and decay of radiation belts and ring currents, as well as the dynamics of geospace storms. …

    Earth, Planets and Space (70), 2018-03-14

    IR 

  • Thermal Environmental Design in Outdoor Space Focusing on Radiation Environment Influenced by Ground Cover Material and Solar Shading, through the Examination on the Redevelopment Buildings in Front of Central Osaka Station

    Takebayashi Hideki , Kyogoku Sae

    … In this study, the radiation environment was evaluated, focusing on ground cover materials and solar radiation shading, through the examination on the redevelopment buildings in front of Central Osaka Station. … The spatial distribution of solar radiation shading was calculated using ArcGIS and building shape data. … Surface temperatures on the ground and wall are calculated based on the surface heat budget equation. …

    Sustainability 10(2), 337, 2018-01-29

    IR 

  • New Observational Metrics of Convective Self-Aggregation: Methodology and a Case Study

    KADOYA Toshiki , MASUNAGA Hirohiko

    … The proposed index is applied to infrared imagery from the Meteosat-7 satellite and is assessed with sounding-array measurements in the tropics from Cooperative Indian Ocean Experiment on Intraseasonal Variability in the Year 2011 (CINDY2011)/Dynamics of the Madden Julian Oscillation (MJO) (DYNAMO)/Atmospheric Radiation Measurement (ARM) MJO Investigation Experiment (AMIE). …

    Journal of the Meteorological Society of Japan. Ser. II 96(6), 535-548, 2018

    J-STAGE 

  • Effect of snow impurities on radiation budget in Sapporo  [in Japanese]

    Hirozawa Yoichiro , Aoki Teruo , Niwano Masashi , Matoba Sumito , Kodama Yuji , Tanikawa Tomonori

    Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research 2018(0), 203, 2018

    J-STAGE 

  • 〈Original Papers〉Diurnal and seasonal variation of air temperature profile in the mountain forest at Sugadaira, central Japan

    UENO Kenichi , UEDA Seiya , KANAI Ryuji , MASAKI Daisuke , SATO Miyuki , RIN Son , HIROTA Mitsuru , 上野 健一 , 廣田 充

    … The shading effects of tree crown, depending on the solar elevation angle and abscission of broad leaf species, controlled the diurnal and seasonal variation of radiation budget and temperature gradients in the forest. …

    Tsukuba Geoenvironmental Sciences (13), 1-12, 2017-12-22

    IR  DOI 

  • Global observation by Global Change Observation Mission-Climate (GCOM-C)  [in Japanese]

    HORI Masahiro , MURAKAMI Hiroshi , MIYAZAKI Risa

    … The GCOM-C mission aims to contribute to improving our knowledge and prediction of the global carbon cycle and radiation budget through high-accuracy observation of global vegetation, ocean color, temperature, cloud, aerosol, and snow and ice through the SGLI observations.</p> …

    Journal of the Japan society of photogrammetry and remote sensing 56(1), 18-21, 2017

    J-STAGE 

  • STUDY OF THE ROLE OF INUNDATION ON RIVER WATER TEMPERATURE WITH A NUMERICAL MODEL  [in Japanese]

    TOKUDA Daisuke , YAMAZAKI Dai , OKI Taikan

    河川水温は,河川環境や利水と深く関係する物理量であり,また河川の氾濫は,河道と氾濫原にある水を混合することによって河川水温に影響を及ぼすことが明らかになっている.一方で河川の氾濫によって水深の浅い浸水域が広がることで,水面面積や滞留時間が増加し,大気や土壌と交換される熱量の増加や,水深に応じた下向き放射の吸収量の変化による熱収支の寄与割合の変化がもたらされると考えられる.本研究ではこれらの働きを評 …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 73(4), I_1213-I_1218, 2017

    J-STAGE 

  • Isotopic Fractionation of Sulfur in Carbonyl Sulfide by Carbonyl Sulfide Hydrolase of <i>Thiobacillus thioparus</i> THI115

    Ogawa Takahiro , Hattori Shohei , Kamezaki Kazuki , Kato Hiromi , Yoshida Naohiro , Katayama Yoko

    … <p>Carbonyl sulfide (COS) is one of the major sources of stratospheric sulfate aerosols, which affect the global radiation balance and ozone depletion. … These results provide an insight into biological COS degradation, which is indispensable for estimating the COS global budget based on the isotope because of the significant contribution of COS degradation by microorganisms harboring β-CA family enzymes.</p> …

    Microbes and Environments 32(4), 367-375, 2017

    J-STAGE 

  • Thermal response of a temperate deep lake to climate change: Lake Kuttara, Hokkaido  [in Japanese]

    CHIKITA Kazuhisa A. , OYAGI Hideo , YAMANE Shiori , AIYAMA Tadao , ITAYA Toshihisa , OKADA Misao , SAKAMOTO Hideyuki

    <p>今回の研究対象である北海道・倶多楽湖は,20世紀までは冬季に完全結氷し年によっては湖氷の圧縮・膨張によるお神渡りが観察された。しかし,21世紀に入り,冬季に完全結氷しない年がこれまで4回現れており,今後の温暖化の進行によって倶多楽湖は将来,永年不凍湖になる可能性がある。ここでは,倶多楽湖の貯熱量を2014年6月~2016年5月の2年間にわたり計算し,気象因子の変動に対する熱的応答 …

    Journal of Japanese Association of Hydrological Sciences 47(2), 73-86, 2017

    J-STAGE 

  • Control System Design of an Ultra-Small Deep Space Probe

    Bendoukhaa Sidi Ahmed , Okuyama Kei-ichi , Biancaa Szasz , Nishio Masanori

    … In parallel, to develop each subsystem of Shinen2: structure design, system bus architecture including the Communication Control Unit CCU, Power Control Unit PCU specifications, and new Particle Pixel Detector PPD for deep space radiation exploration. … The mass budget and size were strictly limited while requiring a higher reliability. …

    Energy Procedia (100), 537-550, 2016-09

    IR 

  • EVALUATION OF WRF PARAMETERIZATIONS IN SIMULATING SEASONAL PRECIPITATION OVER JAPAN  [in Japanese]

    ACIERTO Ralph Allen , KOIKE Toshio , RASMY Mohamed

    Budget profile analysis was used to diagnose unresolved heating/drying processes controlled primarily by cumulus (CU) parameterizations, and how coupling of CU scheme with boundary layer (BL), microphysics (MP) and radiation (RAD) schemes modulate the unresolved processes that consequently impacts simulated precipitation. …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 72(4), I_109-I_114, 2016

    J-STAGE 

  • Cloud-Top Supercooled Liquid Droplets in Stratiform Clouds Observed during Winter in Inland Hokkaido, Japan

    Ohigashi Tadayasu , Tsuboki Kazuhisa , Oue Mariko

    … Supercooled liquid droplets (SLDs) not only play important roles in precipitation formation processes but they also affect the radiation budget. …

    SOLA 12(0), 140-145, 2016

    J-STAGE 

  • VI. Status and Isuues on Evaluation of Individual Doses Due to External Exposures  [in Japanese]

    Saito Kimiaki , Kurihara Osam , Matsuda Norihiro , Takahara Shogo , Sato Tetsuro

    福島事故に起因する被ばくにおいて重要な位置を占める外部被ばくの線量評価に関する最新の知見を紹介する。まず,外部被ばく線量評価の基本的な考え方を提示し,空間線量率に基づく線量評価ならびに個人線量計を用いた測定の長所と問題点について基礎データを示しながら議論する。また,事故後に行われてきた主要な外部被ばく線量測定・評価の試みについてまとめる。さらに,線量評価の新たな試みについても紹介する。

    RADIOISOTOPES 65(2), 93-112, 2016

    J-STAGE  Ichushi Web 

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