At least 2 money managers affiliated with life insurers say public companies should warn investors about any significant effects that climate change triggered by air pollution might have on their condition.

David O’Connor, general counsel for Delaware Investments, a unit of Lincoln National Corp., Philadelphia, has written to the U.S. Securities and Exchange Commission in support of a request by pension fund managers, money managers and others who want the SEC to issue guidance on climate risk disclosure requirements.

Bennett Freeman, a senior vice president at Calvert Asset Management Company Inc., also has written to the SEC to support the climate risk disclosure guidance petition.

Calvert is a unit of UNIFI Mutual Holding Company, Lincoln, Neb., the parent of Ameritas Life, Union Central Life and several other life insurers.

Delaware Investments “believes that registrants should assess the regulatory, physical and litigation-related risks they face and disclose their material risks in SEC filings,” O’Connor writes. “To the extent that climate change poses a material risk, [Delaware Investments] supports the request for interpretive guidance on climate risk disclosure.”

Calvert believes “climate change impacts will become a significant factor affecting many companies’ financial condition,” Freeman writes in his letter. “Therefore the material question for investors is no longer whether corporations should disclose climate risk but should focus on when and how such information should be disclosed.”

Freeman cites automobile manufacturers as an example.

Automobile manufacturers should tell the public about matters such as climate-change-related shifts in product development priorities, Freeman writes.