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This paper selects the data of corporate bond from 2005 to 2019, then divides them into long term bond and short term bond according to maturity of bond. Climate risk is found have significant impact on long term bond yield. Climate risk has no significant impact on short term bond yield. Callability has significant effect on both long term and short term bond yield, while callability has large effect on short term bond and relatively small effect on long term bond. The resale has significant effect on both long term and short term bond yield. The significant effect of the resale on short term bond yield explains large part of the short term bond yield. Issuance has significant impact on both long term and short term bond, with larger impact on short term bond yield. Maturity has significant effect on the yield of both long term and short term bond, and the effect is larger for short term bond. Bearish sentiment is negatively and significantly related to long term bond yield, but has no significant effect on short term bond yield. Credit ratings have large impact on long term bond yield and explain large part of this. However, credit ratings have no significant effect on short term bond yield. [ABSTRACT FROM AUTHOR]

In this paper we collect data of corporate bonds and government bonds issued from 2005 to 2019 from CSMAR database. Firstly, we make a stepwise regression analysis and research on the impact of climate risk, selling back and cross-market transaction on corporate bond yield. The impact of climate risk on corporate bond yield is positive because if carbon dioxide emission is more, the earth will be warmer and sea levels will be higher, then companies will face more climate risks and corporate bond yields will increase. The impact from the selling back on corporate bond yield is negative because if the bond can be resold, the risk will be lower and the bond yield will decrease. The impact of cross-market transaction on corporate bond yields is positive because if corporate bonds cannot be traded, the liquidity of corporate bonds will be low, and the risk will increase, then corporate bond yield will increase. Secondly, logarithmic regression analysis of climate risk factors shows that the climate risk is still significant and the model fits well. Selling back, cross-market trading and other factors are significant, and the pattern is more significant. Compared with the original model, it can better explain corporate bond yield. [ABSTRACT FROM AUTHOR]

This paper studies the impact of climate risk on the yields of corporate bonds with different credit ratings. We find the impact of climate risk on AAA rated corporate bonds. When climate risk increases, the yield of AAA rated corporate bonds increases. But it explains only a tiny fraction of corporate bond yields. The model is more significant after taking the logarithm of climate risk. After maturity is added to the model, both the impact from climate risk and from maturity on the yield of AAA rated corporate bonds is significant. But the impact of climate risk on AA+ corporate bond yields is not significant and the impact of selling back on the yield of AA+ corporate bonds is significant and negative. When the selling back increases, the yield of AA+ corporate bonds decrease. The impact from the issuance on the yield of AA+ corporate bonds is significant and positive. When the issuance increases, the yield of AA+ corporate bonds increase. For AA rated corporate bonds, the impact from the independent variables on the yield of AA rated corporate bonds is not significant. Model does not hold. [ABSTRACT FROM AUTHOR]