Barbara Hendricks told reporters in Berlin that other countries will fill the leadership vacuum left by the United States but none will be expected to make up the shortfall in emissions reductions caused by Washington's exit.
But his decision was criticised by several leaders at home and overseas.
Trump said the United States was "getting out" of a deal he said imposed "draconian" burdens costing billions of dollars and millions of U.S.jobs.
"Pittsburgh is the example".
"We are all waiting now for the remarks by the president to translate into action and make trade and investment more open, more free", Malmstrom told the Brussels conference.
In a memo to Apple employees obtained by CNET, Cook wrote that he spoke with Trump earlier in the week in an effort to persuade him not to withdraw from the pact, in which almost 200 countries agreed to fight global warming by reducing carbon emissions.
The Paris accord, reached by almost 200 countries in 2015, was meant to limit global warming to 2 degrees or less by 2100, mainly through country pledges to cut carbon dioxide and other emissions from the burning of fossil fuels.
While Trump and his fellows seem to have no interest in fulfilling the wants of the American people in this respect, several tech leaders have taken the opportunity in the last 24 hours to pledge their continued support of the Paris Agreement.
The UN Environment Chief Erik Solheim joined other experts and analysts as saying that the U.S. withdrawal will put India and China in leadership positions in the global fight to combat climate change.
The Green Fund is created to help poor countries adapt to climate change and bypass some of the heavily polluting technologies formerly used by rich countries. America is one of the two largest emitters in the world, along with China.