<Table> <Tr> <Th> Compound </Th> <Th> Formula </Th> <Th> Concentration in atmosphere ( ppm ) </Th> <Th> Contribution ( % ) </Th> </Tr> <Tr> <Td> Water vapor and clouds </Td> <Td> 2O </Td> <Td> 10 -- 50,000 </Td> <Td> 36 -- 72 % </Td> </Tr> <Tr> <Td> Carbon dioxide </Td> <Td> CO </Td> <Td> ~ 400 </Td> <Td> 9 -- 26 % </Td> </Tr> <Tr> <Td> Methane </Td> <Td> CH </Td> <Td> ~ 1.8 </Td> <Td> 4 -- 9 % </Td> </Tr> <Tr> <Td> Ozone </Td> <Td> O </Td> <Td> 2 -- 8 </Td> <Td> 3 -- 7 % </Td> </Tr> <Tr> <Th colspan="4"> notes : <P> Water vapor strongly varies locally The concentration in stratosphere . About 90 % of the ozone in Earth 's atmosphere is contained in the stratosphere . </P> </Th> </Tr> </Table>
<Table> <Tr> <Th> Compound </Th> <Th> Formula </Th> <Th> Concentration in atmosphere ( ppm ) </Th> <Th> Contribution ( % ) </Th> </Tr> <Tr> <Td> Water vapor and clouds </Td> <Td> 2O </Td> <Td> 10 -- 50,000 </Td> <Td> 36 -- 72 % </Td> </Tr> <Tr> <Td> Carbon dioxide </Td> <Td> CO </Td> <Td> ~ 400 </Td> <Td> 9 -- 26 % </Td> </Tr> <Tr> <Td> Methane </Td> <Td> CH </Td> <Td> ~ 1.8 </Td> <Td> 4 -- 9 % </Td> </Tr> <Tr> <Td> Ozone </Td> <Td> O </Td> <Td> 2 -- 8 </Td> <Td> 3 -- 7 % </Td> </Tr> <Tr> <Th colspan="4"> notes : <P> Water vapor strongly varies locally The concentration in stratosphere . About 90 % of the ozone in Earth 's atmosphere is contained in the stratosphere . </P> </Th> </Tr> </Table>
the atmospheric gas that is mainly responsible for greenhouse effect
the atmospheric gas that is mainly responsible for greenhouse effect
Water vapor and clouds
Water vapor and clouds