Global Seasonal forecast system version 5 (GloSea5): a high-resolution seasonal forecast system

被引:601
作者
MacLachlan, C. [1 ]
Arribas, A. [1 ]
Peterson, K. A. [1 ]
Maidens, A. [1 ]
Fereday, D. [1 ]
Scaife, A. A. [1 ]
Gordon, M. [1 ]
Vellinga, M. [1 ]
Williams, A. [1 ]
Comer, R. E. [1 ]
Camp, J. [1 ]
Xavier, P. [1 ]
Madec, G. [2 ]
机构
[1] Met Off Hadley Ctr, Exeter, Devon, England
[2] LOCEAN IPSL, French Natl Ctr Sci Res, Paris, France
关键词
seasonal forecasting; ensembles; Arctic Oscillation; ENSO; WNPSTH; MJO; MADDEN-JULIAN OSCILLATION; SEA-SURFACE TEMPERATURE; NORTH-ATLANTIC OSCILLATION; MODEL RESOLUTION; CLIMATE MODEL; PREDICTION; OCEAN; PREDICTABILITY; CIRCULATION; UNCERTAINTIES;
D O I
10.1002/qj.2396
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
This article describes the UK Met Office Global Seasonal forecast system version 5 (GloSea5). GloSea5 upgrades include an increase in horizontal resolution in the atmosphere (N216-0.7 degrees) and the ocean (0.25 degrees), and implementation of a 3D-Var assimilation system for ocean and sea-ice conditions. GloSea5 shows improved year-to-year predictions of the major modes of variability. In the Tropics, predictions of the El Nino-Southern Oscillation are improved with reduced errors in the West Pacific. In the Extratropics, GloSea5 shows unprecedented levels of forecast skill and reliability for both the North Atlantic Oscillation and the Arctic Oscillation. We also find useful levels of skill for the western North Pacific Subtropical High which largely determines summer precipitation over East Asia.
引用
收藏
页码:1072 / 1084
页数:13
相关论文
共 75 条
[1]  
Adler RF, 2003, J HYDROMETEOROL, V4, P1147, DOI 10.1175/1525-7541(2003)004<1147:TVGPCP>2.0.CO
[2]  
2
[3]  
[Anonymous], 1989, SURVEY COMMON VERIFI
[4]  
Arribas A, 2011, MON WEATHER REV, V139, P1891, DOI [10.1175/2010MWR3615.1, 10.1175/2011MWR3615.1]
[5]   Objective tracking of African Easterly Waves in Met Office models [J].
Bain, C. L. ;
Williams, K. D. ;
Milton, S. F. ;
Heming, J. T. .
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 2014, 140 (678) :47-57
[6]   SKILL OF REAL-TIME SEASONAL ENSO MODEL PREDICTIONS DURING 2002-11 Is Our Capability Increasing? [J].
Barnston, Anthony G. ;
Tippett, Michael K. ;
L'Heureux, Michelle L. ;
Li, Shuhua ;
DeWitt, David G. .
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY, 2012, 93 (05) :631-651
[7]  
Bengtsson L, 2007, TELLUS A, V59, P396, DOI 10.1111/J.1600-0870.2007.00236.x
[8]   Atmospheric blocking in a high resolution climate model: influences of mean state, orography and eddy forcing [J].
Berckmans, Julie ;
Woollings, Tim ;
Demory, Marie-Estelle ;
Vidale, Pier-Luigi ;
Roberts, Malcolm .
ATMOSPHERIC SCIENCE LETTERS, 2013, 14 (01) :34-40
[9]   The Joint UK Land Environment Simulator (JULES), model description - Part 1: Energy and water fluxes [J].
Best, M. J. ;
Pryor, M. ;
Clark, D. B. ;
Rooney, G. G. ;
Essery, R. L. H. ;
Menard, C. B. ;
Edwards, J. M. ;
Hendry, M. A. ;
Porson, A. ;
Gedney, N. ;
Mercado, L. M. ;
Sitch, S. ;
Blyth, E. ;
Boucher, O. ;
Cox, P. M. ;
Grimmond, C. S. B. ;
Harding, R. J. .
GEOSCIENTIFIC MODEL DEVELOPMENT, 2011, 4 (03) :677-699
[10]  
Blockley E. W., 2013, Geoscientific Model. Dev. Discussions, V6, P6219, DOI [10.5194/gmdd-6-6219-2013, DOI 10.5194/GMDD-6-6219-2013]