Towards Dynamical Seasonal Forecast of Extratropical Transition in the North Atlantic

Ncep Dynamical Seasonal Forecast System 2000

JULY 2002 AMERICAN METEOROLOGICAL SOCIETY | I n April 2000, a new dynamical seasonal prediction system was introduced at the National Centers for Environmental Prediction (NCEP; the acronyms used in this paper are summarized in the appendix). The transition to the new system was hastened by a computer fire in September 1999 and subsequent changeover from a Cray C90 to an IBM-SP computer system....

A seasonal diary of phytoplankton in the North Atlantic

*Correspondence: Christian Lindemann, National Institute of Aquatic Resources, Technical University of Denmark, Jægersborg Alle 1, 2920 Charlottenlund, Denmark e-mail: [email protected] In recent years new biological and physical controls have been suggested to drive phytoplankton bloom dynamics in the North Atlantic. A better understanding of the mechanisms driving primary production has poten...

Towards a Seasonal Forecast in the Ross Sea

The influence of extratropical Atlantic Ocean region on wet and dry years in North-Northeastern Brazil

The rainy season of north-Northeastern Brazil (NE), one of the tropical regions with the largest rainfall interannual variability, is associated with the Intertropical Convergence Zone (ITCZ) influence, which is located in the southermost position during this season (March-April-May). However, there is a large interannual variability in the ITCZ position, associated with atmospheric and oceanic...

The 8.2k event: abrupt transition of the subpolar gyre towards a modern North Atlantic circulation

This Supplement is organized as follows: The climate model is described in detail in section 1. Section 2 discusses the robustness of multiple subpolar gyre (SPG) modes by presenting findings from several climate models. Section 3 continues this discussion summarizing work on the sensitivity of the SPG primarily in CLIMBER3α. This is followed by figures supporting conclusions in the main text a...