인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
ABSTRACT We investigate the variability of the North Atlantic Oscillation (NAO) in the Met Office Global Seasonal Forecasting System (GloSea) using a 132‐member ensemble of coupled model forecasts, which is larger than has previously been available. Consistent with previous studies, we find that the signal‐to‐noise ratio is too small to match the correlation skill, and we additionally find that this result is statistically significant for years when the El Niño Southern Oscillation is active, and therefore skill is higher. We also show that correcting the signal‐to‐noise ratio by only increasing the signal would produce total variability that is still within real world estimates, removing the necessity for nonlinear mechanisms to increase the signal at the expense of the noise. Finally, we find an inverse relationship between yearly ensemble spread and ensemble mean, suggesting that the negative phase of the NAO may be less predictable than the positive, although the relationship is partly due to a longitudinal shift in the NAO pattern, which in positive NAO years moves the centre of variability away from the traditional Azores location.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.