"In 1990 this key cause of global warming was rising at a rate of 1 part per million (ppm). Recently, that rate reached 2 ppm per year. Now, scientists at the Mount Zeppelin monitoring station have discovered it is rising at between 2.5 and 3 ppm. [...]
In the last two decades, carbon dioxide levels in the atmosphere have risen from 350 to 380 ppm and scientists warn that once levels reach 500, there could be irreversible consequences that would tip the planet toward disaster: glacier melts triggering devastating sea-level rises and spreading deserts across Africa and Asia."
This is an excerpt from something I read online. Does anyone know what "ppm" means?
I REALLY need this info!
I appreciate your help. Happy Holidays! =D
2006-12-06 20:48:10 · 10 answers · asked by Anonymous in Environment
Holy cow! I just realized it tells me in the first sentence! LOL
Omg, sorry for bugging everyone.
It could be just because it is 2 a.m....lol.
2006-12-06 20:53:49 · update #1
lol
2006-12-06 20:56:10 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Go some where else for direct measurements. Granted the world is burning Hugh amounts of fuels,but there have not been any increase in the past 30 years. I worked with large amounts of CO2 and my Calibrated monitor was always 1 part per million,the highest I saw it bump up to 2 parts per million a couple of times. Where has all that CO2 gone? We have an Friend in the battle against the CO2. Plants Take in CO2 and process it with sunlight and water to make there food and give us oxygen ,it is called photosynthesis. The plants need CO2 as bad as we need oxygen.
2006-12-07 02:55:54 · answer #2 · answered by JOHNNIE B 7 · 0⤊ 0⤋
parts per million is a unit to measure the amount of a certain gas in the air. So 1 ppm of say, carbon dioxide, means in every 1 million parts of air (these parts can be in any unit) there is 1 part of carbon dioxide. To put it in another way, for every 1 cubic centimeter of carbon dioxide in the air, there is 999,999 cubic cm of gases which is NOT carbon dioxide
2006-12-06 20:54:00 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It means 'Parts Per Million'. For example, 2 ppm would mean 2 cubic meters of carbon dioxide per 1 million cubic meters of atmosphere. Or, said another way, 2 cubic meters of carbon dioxide mixed with 999,998 cubic meters of other atmospheric gasses.
Doug
2006-12-06 20:55:02 · answer #4 · answered by doug_donaghue 7 · 0⤊ 0⤋
PPM=parts per million
2006-12-06 20:52:22 · answer #5 · answered by Normefoo 4 · 0⤊ 0⤋
It means there is 1 part of Carbon Dioxide in every million parts of air.
2006-12-06 20:54:22 · answer #6 · answered by Joanne B 3 · 0⤊ 0⤋
the 1st sentence says "1 part per million (ppm)"
so, "ppm" means "part per million"
2006-12-06 20:51:21 · answer #7 · answered by AntoineBachmann 5 · 2⤊ 0⤋
parts per million
2006-12-06 20:51:19 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Do you mean that you meant the note "mean" in its unique meaning or are you too mean to fulfill my mean criteria? Oh, i am going to commence moaning about your blending up all those m-words...
2016-11-24 20:36:31 · answer #9 · answered by ? 4 · 0⤊ 0⤋
dunno
2006-12-06 20:55:28 · answer #10 · answered by sabam 3 · 0⤊ 0⤋