Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of petagram.

Etymologies

Sorry, no etymologies found.

Examples

  • Each year, respiration by organisms other than detrivores returns to the atmosphere almost half (50 petagrams or 50 billion metric tons) of the carbon dioxide that is absorbed by photosynthesis.

    Carbon cycle

  • Currently, the flow of carbon from the atmosphere to the ocean is about 2 petagrams (2 billion metric tons) greater than the flow of carbon from the ocean to the atmosphere.

    Carbon cycle

  • In 2000, humans burned about 5.1 billion short tons (4.6 billion metric tons) of coal, 28.1 billion barrels of oil, and 89 trillion cubic feet of natural gas, which caused about 6.5 petagrams (6.5 billion metric tons) of carbon to flow from the fossil fuel storage pool to the atmosphere.

    Carbon cycle

  • Each year, photosynthesis by terrestrial plants moves about 110 petagrams (1 petagram = 1015 grams = 1012 kilograms = 1 billion metric tons; so 110 petagrams = 110 billion metric tons) of carbon from the atmosphere to the biota.

    Carbon cycle

  • Global changes in climate have eased several critical climatic constraints to plant growth, such that net primary production increased 6% (3.4 petagrams of carbon over 18 years) globally.

    Carbon cycle

  • This flow of carbon is known as decay and accounts for about 60 petagrams (60 billion metric tons).

    Carbon cycle

  • Boreal and subarctic peatlands contain approximately 455 Pg (petagrams; 1 petagram = 1015 grams = 1012 kilograms = 121 billion tons) of carbon accumulating at an average rate of 0.096 Pg/yr, and constitute a significant proportion of the total boreal carbon pool [6].

    Climate change in relation to carbon uptake and carbon storage in the Arctic

  • Based on observed atmospheric carbon dioxide CO2 concentration and an inverse method, we estimate that the Southern Ocean sink of CO2 has weakened between 1981 and 2004 by 0.08 petagrams of carbon per year per decade relative to the trend expected from the large increase in atmospheric CO2.

    Unthreaded #14 « Climate Audit

  • The value for the anthropogenic emissions for the 1980s was given as 5.4 PgC/year, which is 5.4 petagrams of carbon per year or 5.4 gigatonnes of carbon per year.

    A few inconvenient truths « Climate Audit

  • Using inorganic carbon measurements from an international survey effort in the 1990s and a tracer-based separation technique, we estimate a global oceanic anthropogenic carbon dioxide CO2 sink for the period from 1800 to 1994 of 118 ± 19 petagrams of carbon.

    A few inconvenient truths « Climate Audit

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.