Climate Report over Japan
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Monthly Highlights
-Monthly mean temperatures were significantly above normal in northern/eastern Japan, and were above normal in western Japan and Okinawa/Amami, because warm air covered nationwide in the second and the third 10 days of the month.
-Monthly precipitation amounts were significantly below normal on the Pacific side of northern Japan, and monthly sunshine durations were significantly above normal on the Pacific side of northern/eastern Japan and on the Sea of Japan side of eastern Japan, and above normal on the Sea of Japan side of northern/western Japan, where high-pressure systems frequently covered in the second 10 days of the month.
-On the other hand, monthly precipitation amounts were significantly above normal in Okinawa/Amami, because the region was well affected by the Baiu-front in the second 10 days of the month. Monthly precipitation amounts were significantly above normal on the Pacific side of eastern Japan, and above normal on the Pacific side of western Japan, because the regions were well affected by the Baiu-front in the third 10 days of the month.
Climate Anomaly Table Over Japan
Monthly Climate Anomaly over Japan
Time Series of Temperature Anomaly
Time Series of 10days Precipitation Amount Ratio and Sunshine Duration Ratio
10-day Mean Sea Level Pressure
10-day Mean 850hPa Temperature
10-day Mean 500hPa GeoPotential Height
10-day Mean Outgoing Longwave Radiation
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.