Sentences with word «teragrams»

Miller's research finds that, in 2007 and 2008, U.S. emissions of methane from human - related sources were 33.4 teragrams of carbon equivalent per year.

In fact, the following CDIAC report estimated that in the US from the late 1800s to the present (when prosperity was generally on the rise), changes in land use have reduced the carbon flux from land to atmosphere by hundreds of teragrams per year: / / cdiac.ornl.gov / trends / landuse / houghton / houghton.html

Annual CO2 emissions in teragrams (1m tonnes) of forest fires (dark green) and deforestation (light green) in the Amazon from 2003 to 2015.

This is substantially larger than the ~ 25 teragrams CH4 per year emissions estimated for the region from inversion models based on atmospheric CH4 concentration data.

In 1915, reflecting the abrupt increase in settlement caused by the opening of the Trans - Siberian Railroad hosted a wave of climate - related forest fires that released teragrams of smoke and soot over a burnt area possibly exceeding a million square kilometers.

If it further destabilizes, the methane emissions may not be teragrams [one million metric tons], it would be significantly larger.

Shakhova's research results show that the East Siberian Arctic Shelf is already a significant methane source, releasing 7 teragrams of methane yearly, which is as much as is emitted from the rest of the ocean.

They calculated the amount of methane being released from the bubbles to the atmosphere at 17 teragrams per year, which is close to the amount being released from the Arctic tundra.

The sum of these emission estimates is about 60 teragrams CH4 per year, or ~ 25 % of global natural CH4 emissions.

In an announcement Thursday, climate change think - tank the Woods Hole Research Center (WHRC) said the tropics now represented «a net source of carbon to the atmosphere,» roughly 425 teragrams each year.

Sewage, agriculture and other human sources add about 1.5 teragrams of phosphorus to freshwaters each year, the study estimates.

Potentially catastrophic amounts of methane lie trapped as so - called burning ices, or methane hydrates, in the permafrost beneath arctic tundra — as much as 10,000,000 teragrams still trapped compared with just 5,000 teragrams in the atmosphere today, according to Simpson.

The researchers found that reforesting topsoils across the country are currently adding 13 million to 21 million metric tons (13 - 21 teragrams) of carbon each year, an amount equivalent to about 10 percent of the total U.S. forest - sector carbon sink and offsetting about 1 percent of all U.S. greenhouse gas emissions.

They measured levels of the gas emitted from all sources, and found more than half a teragram per year coming from the area where Arizona, New Mexico, Colorado and Utah meet.

That number is significantly higher than EPA's methane budget, which puts U.S. emissions for 2008 at 22.1 teragrams of carbon equivalent per year.

Rivers discharge annually 248 teragrams (248,000,000,000,000 grams) of terrestrial dissolved organic carbon from the continents to the ocean.

An article published in the Global Biogeochemical Cycles on 20th of February 2018 estimates that solar radiation mineralizes 45 teragrams of terrestrial dissolved organic carbon in the ocean.

Such a glut of cellulosic biofuel, if realized, would reduce greenhouse gas emissions — compared with oil that otherwise would have been burned — by 44 teragrams (44 billion kilograms) per year.

The results are shown on the chart below, which shows annual CO2 emissions in teragrams (one teragram is equal to 1m tonnes of CO2) for forest fires (dark green) and deforestation (light green).

Total global CH4 emissions are likely 550 — 650 billion kilograms per year (550 — 650 teragrams, Tg).

«If it further destabilizes, the methane emissions may not be teragrams, it would be significantly larger.»

A teragram is equal to about 1.1 million tons.

By comparison, the model estimated fires yielded just 22 teragrams of carbon monoxide in all of 2010.

Through August 31, the model showed that Russian wildfires had released an estimated 48 teragrams of carbon monoxide since the beginning of 2012.

In that year, when severe fires burned in eastern Russia, wildfires produced an estimated 72 teragrams of carbon monoxide.

That same year, the researchers found 7 million tons (7.2 teragrams) of methane came from oil and gas operations.

Overall, the new research finds a total of 33 million tons (30.1 teragrams) of methane was released by human activities in the United States in 2004.

The EPA estimated 9.7 million tons (8.8 teragrams) of methane from livestock in 2004.

The EPA attributed 9.9 million tons (9.0 teragrams) to oil and gas industries.

The EPA's total for 2004 was 31 million tons (28.3 teragrams) of methane.

About 17 teragrams of methane escapes each year from a broad, shallow underwater platform called the East Siberian Arctic Shelf.

The following chart taken from the report details how the researchers categorized the total of 558 teragrams of 2016 global methane emissions; U.S. natural gas production is listed at the bottom of the chart.

According to the US EPA's Inventory of US Greenhouse Gas Emissions and Sinks: 1990 - 2005 (here) and associated EPA databases, CO2 emissions from US commercial, domestic flights (defined as flights that take off and land within the continental US) experienced steady increases from approximately 170 teragrams (Tg, or million metric tons) in the early 1990s to a peak of 196 Tg in 2000 (a 15.5 % increase in less than a decade).

Recently a team from Russia, the US, and Sweden found that the East Siberian Arctic Shelf (ESAS) is releasing around 8 teragrams of methane from subsea sediments each year.

The East Siberian Arctic Shelf is releasing around 8 teragrams of methane from subsea sediments each year, about the same amount as the whole of the rest of the ocean.

A teragram equals 1 million tons.

Doubling that to 16 teragrams approaches the 17 teragrams of methane per year that scientists reckon the arctic tundra contributes.

Previous estimates predicted 8 teragrams of methane per year released into the atmosphere from ESAS.

«We'd have to put chalk up at a rate of 10 teragrams a year to undo the effects of CO2 we've already released,» he said.

They calculated that the net uptake averages 41 teragrams of carbon per year and determined that at the 90 % confidence level, this result has an uncertainty of about 25 % and an interannual variability of about 20 %, reflecting the fact that some shelf areas can serve as either a carbon source or a carbon sink.

Their results suggest that 75 % of nitrogen and 80 % of phosphorus cross the continental shelves, delivering a total of 17 teragrams of nitrogen and 1.2 teragrams of phosphorus from rivers to the open ocean each year.