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Furthermore, social media reports that the weather in Korea is more accurate, which the Japan Meteorological Agency tells us. So we checked to see if this is really correct.

Reporter Park Won-kyung will deliver at the'In fact' corner.

<Reporter> The

weather forecast in Korea in Japan is more accurate than that of the Korea Meteorological Agency.

Really?

This is the website of the Japan Meteorological Association. We are forecasting the weekly weather for each city in Korea.

Similar to this is the mid-term forecast of the Korea Meteorological Agency, which forecasts the weather for 8 days from 3 days to 10 days.

In line with this criterion, we compared which of the two places has the highest accuracy in forecasting for Seoul by means of an index called precipitation hit rate and POD.

This metric is a commonly used metric when judging forecast accuracy, and it refers to the percentage of actual snow or rain.

The closer to 100%, the more accurate the forecast.

In the four months of January, February, and June and July, when snow or rain is relatively heavy, the Japan Meteorological Association's rainfall hit rate was 62%, and the Korea Meteorological Agency was 54%, which was higher in Japan.

I saw it separately last month, but it was also higher in Japan at 87% vs. 73%.

In 1 out of 10, the Japanese side guessed the weather in Seoul more.

Why is this?

Weather forecast accuracy is more affected by forecast model performance than observation data quality or forecaster capabilities.

In particular, the accuracy of mid-term forecasts has a decisive influence on the performance of the forecast model.

For this reason, meteorologists say that a high prediction rate for precipitation in Japan can be interpreted as a high accuracy forecast model in Japan.

However, there is also an expectation that the accuracy will increase if the Korean forecast model, which is in operation with the British model since April, is further stabilized.

(Video editing: Kim Jong-mi, data arrangement: Kim Hye-ri, Kim Jung-woo)