기상청 국가태풍센터의 태풍 베스트트랙 생산체계 소개
Algorithms for Determining Korea Meteorological Administration (KMA)’s Official Typhoon Best Tracks in the National Typhoon Center
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초록
The Korea Meteorological Administration (KMA) National Typhoon Center has beenofficially releasing reanalyzed best tracks for the previous year’s northwest Pacific typhoonssince 2015. However, while most typhoon researchers are aware of the data released by otherinstitutions, such as the Joint Typhoon Warning Center (JTWC) and the Regional SpecializedMeteorological Center (RSMC) Tokyo, they are often unfamiliar with the KMA products. Inthis technical note, we describe the best track data released by KMA, and the algorithms thatare used to generate it. We hope that this will increase the usefulness of the data to typhoonresearchers, and help raise awareness of the product. The best track reanalysis process is initiatedwhen the necessary database of observations—which includes satellite, synoptic, ocean,and radar observations—has become complete for the required year. Three categories of besttrack information—position (track), intensity (maximum sustained winds and central pressure),and size (radii of high-wind areas)—are estimated based on scientific processes. These estimatesare then examined by typhoon forecasters and other internal and external experts, and issuedas an official product when final approval has been given
Abstract
The Korea Meteorological Administration (KMA) National Typhoon Center has beenofficially releasing reanalyzed best tracks for the previous year’s northwest Pacific typhoonssince 2015. However, while most typhoon researchers are aware of the data released by otherinstitutions, such as the Joint Typhoon Warning Center (JTWC) and the Regional SpecializedMeteorological Center (RSMC) Tokyo, they are often unfamiliar with the KMA products. Inthis technical note, we describe the best track data released by KMA, and the algorithms thatare used to generate it. We hope that this will increase the usefulness of the data to typhoonresearchers, and help raise awareness of the product. The best track reanalysis process is initiatedwhen the necessary database of observations—which includes satellite, synoptic, ocean,and radar observations—has become complete for the required year. Three categories of besttrack information—position (track), intensity (maximum sustained winds and central pressure),and size (radii of high-wind areas)—are estimated based on scientific processes. These estimatesare then examined by typhoon forecasters and other internal and external experts, and issuedas an official product when final approval has been given
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