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Global CO 2 emissions and global temperatures: Are they related
Author(s) -
GilAlana Luis A.,
Monge Manuel
Publication year - 2020
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.6601
Subject(s) - cointegration , climatology , econometrics , environmental science , long memory , greenhouse gas , relation (database) , atmospheric sciences , global warming , mathematics , economics , meteorology , climate change , geology , physics , computer science , oceanography , volatility (finance) , database
This paper deals with the analysis of the relationship between CO 2 emissions and temperatures. For this purpose, global CO 2 emissions and four measures of global temperatures (land, land and ocean, northern and southern temperatures) are used. We used techniques based on fractional integration and cointegration. The results indicate first that the orders of integration differ in the two variables. Thus, while emissions are I(1) or I(d) with d higher than 1, temperatures display orders of integration strictly smaller than 1 and thus invalidating the hypothesis of cointegration between the two variables. Due to this, another approach is conducted where we suppose that the emissions are weakly exogenous in relation to the temperatures. The results using this approach show a significantly positive relationship between the two variables with a long memory pattern.