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Zonally averaged temperature (T) responses to Ap-index (first row), sunspot number (SSN, second row), Nino 3.4 (third row), aerosol optical depth (AOD, fourth row) and Quasi-Biennial Oscillation (QBO, fifth row) in December–March (columns 1–4). Responses are obtained using MLR with Ap, SSN, Nino3.4, AOD and QBO as explanatory variables. All notations are same as in Figure 2.
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