Sentences with phrase «than previous estimates based»

The extinction rates were much higher than previous estimates based on more limited data sets.

This is significantly older than previous estimates based on mtDNA, confirming recent observations from autosomal markers that brown and polar bears from a genetic point of view represent highly distinct species.

Not exact matches

Based on current estimates, the combined Northern and Southern Hemisphere crops should be much closer to the results of the previous five years average, compared to the much larger than average crop of last year.

Based on data through April 7, 2013, the latest orbital plot places the comet's closest approach to Mars slightly closer than previous estimates, at about 68,000 miles (110,000 kilometers).

The researchers» new estimate is much more precise than previous estimates, which were based on observations of faraway stars.

The team recalculated the expected lifetime of Chariklo's rings based on their results and found it to be only 1 to 100 years, much shorter than previous estimates.

These results are significantly higher than the California Air Resources Board (CARB)'s previous estimate of about 4 percent (pdf), which was based on data from farms within 200 kilometers of Sacramento.

That is considerably more than previous official estimates, based on surveys that showed 15,000 people take the drug at least once a month.

Previous estimates were based on a share of less than 5 percent.

While this number is higher than the previous estimate made in the late 1990s based on ground measurements, the new research includes data on more volcanoes, including some that scientists have never visited, and it is still lower than human emissions of sulfur dioxide pollution levels.

Trusts are also persuading the ESFA to fund them based on their estimated pupil numbers rather than on the previous year's, an arrangement with a «significant cashflow advantage».

Hegerl et al (2006) for example used comparisons during the pre-industrial of EBM simulations and proxy temperature reconstructions based entirely or partially on tree - ring data to estimate the equilibrium 2xCO2 climate sensitivity, arguing for a substantially lower 5 % -95 % range of 1.5 — 6.2 C than found in several previous studies.

However, I've revised the cost estimates and they are far higher than in my previous estimates.The inefficiencies in the cooling system mean that the cost per tonne CO2 removed would be around $ 5,000 / t CO2 (based on a simple factoring up of my previous estimate to allow for the energy inefficiencies).

Previous research (Gillett et al, 2012)[v] has shown that scaling factors based on a 1901 start date are more sensitive to end date than those starting in the middle of the 19th century, with temperatures in the first two decades of the 20th century having been anomalously low, so the 1861 — 2010 estimates are probably more reliable than the 1901 — 2010 ones.

Based on these results, American Bird Conservancy and The Wildlife Society estimate that house cats kill far more than the previous estimate of a billion birds and other animals each year.

The new data show generally higher temperature estimates than previous reconstructions based on Torneträsk tree - ring data.

The previous estimate of more than 50 million Facebook users affected by the data leak came from two newspapers, the New York Times and London's Observer, based on their investigations of Cambridge Analytica.