TY - JOUR
T1 - Relationship Between the Change in Size of Tropical Cyclones and Spatial Patterns of Precipitation
AU - Tsuji, Hiroki
AU - Nakajima, Kensuke
N1 - Funding Information:
This work is a part of H. Tsuji's PhD thesis. H. Tsuji is deeply grateful to the members of the thesis committee, Prof. R. Kawamura and Prof. T. Hirooka of Kyushu University and Dr. K. Ito of the University of Ryukus. H. Tsuji would also like to thank Dr. U. Shimada of Japan Meteorological Agency Meteorological Research Institute and Dr. K. Toyoshima of Chiba University to give me helpful advices about the usage of satellite observation data. We are sincerely grateful to six anonymous reviewers and the Editor for critical reading of the original manuscript and providing useful comments. QuikSCAT data are produced by Remote Sensing Systems and sponsored by the NASA Ocean Vector Winds Science Team. Data are available at www.remss.com . The GSMaP data were produced and distributed by the Earth Observation Research Center (EORC), JAXA. The data are available at http://sharaku.eorc.jaxa.jp/GSMaP/index.htm . TRMM/TMI data are obtained from JAXA/EORC Tropical Cyclone Database. JAXA/EORC Tropical Cyclone Database (Ver. 1.2) was produced and supplied by the Earth Observation Research and application Center, Japan Aerospace Exploration Agency. The data are available at http://sharaku.eorc.jaxa.jp/TYP_DB/index_e.shtml . The Japan Meteorological Agency best track data are available at http://www.jma.go.jp/jma/jma‐eng/jma‐center/rsmc‐hp‐pub‐eg/RSMC_HP.htm . This work was supported by a Grant‐in‐Aid for JSPS Research Fellow Grant JP16J04678.
Funding Information:
This work is a part of H. Tsuji's PhD thesis. H. Tsuji is deeply grateful to the members of the thesis committee, Prof. R. Kawamura and Prof. T. Hirooka of Kyushu University and Dr. K. Ito of the University of Ryukus. H. Tsuji would also like to thank Dr. U. Shimada of Japan Meteorological Agency Meteorological Research Institute and Dr. K. Toyoshima of Chiba University to give me helpful advices about the usage of satellite observation data. We are sincerely grateful to six anonymous reviewers and the Editor for critical reading of the original manuscript and providing useful comments. QuikSCAT data are produced by Remote Sensing Systems and sponsored by the NASA Ocean Vector Winds Science Team. Data are available at www.remss.com. The GSMaP data were produced and distributed by the Earth Observation Research Center (EORC), JAXA. The data are available at http://sharaku.eorc.jaxa.jp/GSMaP/index.htm. TRMM/TMI data are obtained from JAXA/EORC Tropical Cyclone Database. JAXA/EORC Tropical Cyclone Database (Ver. 1.2) was produced and supplied by the Earth Observation Research and application Center, Japan Aerospace Exploration Agency. The data are available at http://sharaku.eorc.jaxa.jp/TYP_DB/index_e.shtml. The Japan Meteorological Agency best track data are available at http://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/RSMC_HP.htm. This work was supported by a Grant-in-Aid for JSPS Research Fellow Grant JP16J04678.
Publisher Copyright:
©2019. American Geophysical Union. All Rights Reserved.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - The relationship between the size change of tropical cyclones (TCs) and radial distribution of precipitation was investigated for TCs occuring over the western North Pacific Ocean with satellite observation data. The size of a TC is defined as the radial extent of 15 m s−1 winds (R15). The spatial distribution of precipitation was investigated by extracting two subperiods, which are the size-increasing period and the size-stationary period, as determined from R15 evolution. The results show a contrast that during the size-increasing period, precipitation falls both inside and outside the R15, whereas during the size-stationary period, it is concentrated near the center of the TC and falls less around and outside R15. This contrast is also confirmed statistically by composite analysis using 64 TC cases. Further analysis reveals that this contrast does not depend on the intensity or the change in intensity of the TC, which indicates that the area of precipitation related to the intensity or intensity change of TCs is different from that related to the size change of TCs. Finally, we examined the radial distribution of inertial stability in TCs and found that precipitation during the size-stationary period occurs in a region with a higher inertial stability than that which occurs during the size-increasing period.
AB - The relationship between the size change of tropical cyclones (TCs) and radial distribution of precipitation was investigated for TCs occuring over the western North Pacific Ocean with satellite observation data. The size of a TC is defined as the radial extent of 15 m s−1 winds (R15). The spatial distribution of precipitation was investigated by extracting two subperiods, which are the size-increasing period and the size-stationary period, as determined from R15 evolution. The results show a contrast that during the size-increasing period, precipitation falls both inside and outside the R15, whereas during the size-stationary period, it is concentrated near the center of the TC and falls less around and outside R15. This contrast is also confirmed statistically by composite analysis using 64 TC cases. Further analysis reveals that this contrast does not depend on the intensity or the change in intensity of the TC, which indicates that the area of precipitation related to the intensity or intensity change of TCs is different from that related to the size change of TCs. Finally, we examined the radial distribution of inertial stability in TCs and found that precipitation during the size-stationary period occurs in a region with a higher inertial stability than that which occurs during the size-increasing period.
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U2 - 10.1029/2019JD030404
DO - 10.1029/2019JD030404
M3 - Article
AN - SCOPUS:85072208326
SN - 2169-897X
VL - 124
SP - 9948
EP - 9962
JO - Journal of Geophysical Research: Atmospheres
JF - Journal of Geophysical Research: Atmospheres
IS - 17-18
ER -