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Climate Report over Japan





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Monthly Highlights

- Monthly precipitation amounts were significantly above normal in Hokkaido region of Japan due to strong influence of low pressure systems and fronts. On the Pacific side of eastern Japan, monthly sunshine durations were significantly above normal due to weak influence of the Baiu front and moist airflow. In Okinawa/Amami, 10-day precipitation amounts in mid-June were significantly above normal due to typhoons and moist airflow.
- Monthly mean temperatures were above normal all over Japan, except for the mid-June from northern to western Japan due to northerly cold airflow and the appearance of the Okhotsk High.

Climate Anomaly Table Over Japan

Monthly Climate Anomaly over Japan

TRS_map

Time Series of Temperature Anomaly

regtmp

Time Series of 10days Precipitation Amount Ratio and Sunshine Duration Ratio

precandsunshine

10-day Mean Sea Level Pressure

SLP_1
SLP_2
SLP_3

10-day Mean 850hPa Temperature

T850_1
T850_2
T850_3

10-day Mean 500hPa GeoPotential Height

SLP_1
SLP_1
SLP_1

10-day Mean Outgoing Longwave Radiation

OLR_1
OLR_2
OLR_3
Note: Figures of outgoing longwave radiation (OLR) in Monthly Report over Japan are based on the NOAA CPC Blended OLR data from the September 2023 report, while they were based on the NOAA CPC AVHRR OLR data until the August 2023 report.
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Tokyo Climate Center, Climate Prediction Division.
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