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Climate Report over Japan





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Monthly Highlights

- The first half of October brought notably warmer than normal temperatures nationwide, due to warm air advection for northern Japan, and in addition to this, sunny conditions associated with frequent high pressure systems for the other regions in the country. Later in the month, however, temperatures sharply dropped in most of the country because of air mass inflow from the continent very cold for this time of the year. In aggregate monthly mean temperatures were above normal in eastern to western Japan and Okinawa/Amami.
- Monthly precipitation amounts were significantly above normal in the Sea of Japan side of northern Japan due to influences from low pressure systems and fronts. Monthly precipitation amounts were below normal and monthly sunshine durations were above normal in most of eastern to western Japan, significantly so in some regions, due to high pressure systems frequently seen settling over the area.

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
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Tokyo Climate Center, Climate Prediction Division.
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