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The COVID-19 pandemic was confirmed to have reached the U.S. state of Pennsylvania in March 2020. As of October 7, 2021, the Pennsylvania Department of Health has confirmed 1,464,264 cumulative cases and 29,814 deaths in the state. [1]
The concentrations of carbon dioxide in the atmosphere are expressed as parts per million by volume (abbreviated as ppmv, or ppm(v), or just ppm). To convert from the usual ppmv units to ppm mass (abbreviated as ppmm, or ppm(m)), multiply by the ratio of the molar mass of CO 2 to that of air, i.e. times 1.52 (44.01 divided by 28.96).
Despite this, the concentration of carbon dioxide in the atmosphere was the highest ever recorded in human history in May 2020. [136] Energy and climate expert Constantine Samaras states that "a pandemic is the worst possible way to reduce emissions" and that "technological, behavioral, and structural change is the best and only way to reduce ...
How officials say a ‘very high’ concentration of SARS-CoV-2, the virus that causes COVID-19, and low vaccination rates could cause a spike in cases.
This is a list of U.S. states and territories by carbon dioxide emissions for energy use, [1] [2] as well as per capita [3] [4] and by area. [5] The state with the highest total carbon dioxide emissions is Texas and the lowest is Vermont. The state with the highest per capita carbon dioxide emissions is Wyoming and the lowest is New York.
Regardless of where it was emitted from, emissions are roughly spread across the world and become mixed into a heterogeneous mixture. They are calculated in parts per million (ppm), parts per billion (ppb), and parts per trillion (ppt). In 2019, data states that there was 409.8 parts per million of carbon dioxide in the atmosphere. [19]
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1 volume percent = 10,000 ppmv (i.e., parts per million by volume) with a million being defined as 10 6. Care must be taken with the concentrations expressed as ppbv to differentiate between the British billion which is 10 12 and the USA billion which is 10 9 (also referred to as the long scale and short scale billion, respectively).