Basin mode of Indian Ocean sea surface temperature and Northern Hemisphere circumglobal teleconnection

[1] Observational analysis and model experiments show that the sea surface temperature anomaly associated with the Indian Ocean Basin mode (IOBM), which persists from spring to summer, can generate significant circumglobal teleconnection (CGT) in the Northern Hemisphere summer midlatitude atmosphere. A warm IOBM can induce a new atmospheric heating source in the south Asia through a positive feedback. An enhanced Indian summer monsoon through the increased precipitation in the south Asia induces an atmospheric heating source there. This new atmospheric heating source generates an anomalous high to its northwest over the western-central Asia, which in turn generates an eastward downstream atmospheric wave train, forming the CGT. Citation: Yang, J., Q. Liu, Z. Liu, L. Wu, and F. Huang (2009), Basin mode of Indian Ocean sea surface temperature and Northern Hemisphere circumglobal teleconnection, Geophys. Res. Lett., 36, L19705, doi:10.1029/ 2009GL039559.