We received 21 responses for the Pan-Arctic report (Figure 1), with estimates in the range of just below 4.0 million square kilometers to as high as 5.4 million
square kilometers for the September arctic mean sea ice extent.
After adjustment, the ensemble mean estimate is 4.60 million
square kilometers for September, down from the 5.13 million square kilometers of the first estimate.
The prediction for September 2011 is now 213,421 square kilometers, down from a prediction of 257,947
square kilometers for the previous month's outlook.
Do we believe that today's models can provide decision - relevant probabilities at a resolution of tens of
square kilometers for the year 2060 — or even 2020 for that matter?
We received 21 responses with a range of estimates from 4.0 to 5.0 million
square kilometers for the September 2012 arctic mean sea ice extent (Figure 1).
Add the Plains Amerindian culture at 1 person per square kilometer and assuming 2.6 million
square kilometers for the plains area, the result is another 2.6 million population of Plains culture Amerindians.
The September minimum is likely to be around 5.0 million square kilometers, compared to around 4.5 million
square kilometers for 2008 and 4.1 million
square kilometers for 2007.
The May Outlook responses had a median value of 4.2 million square kilometers, with a median of 4.9 million
square kilometers for the July Outlook (Fig. 5); these compare to a 2008 September observed value of 4.7 million square kilometers.
The range of respondents» estimates from 3.1 to 5.5 million
square kilometers for September 2008 primarily reflects the relative importance that was given to these two factors.
With observations from early summer, the projected median ice extent value increased to 4.9 million
square kilometers for the July Outlook.
This area is 1.19 million
square kilometers for SMMR (from the beginning of the series through June 1987) and 0.31 million
square kilometers for SSM / I (from July 1987 to present).
In 1991 President Collor issued a decree creating a continuous reserve of 94,000
square kilometers for the Yanomami people.
It means a million
square kilometers for one day during the summer... but regardless of that, I can assure you that no sane ship owner would routinely schedule shipping by way of the Arctic Ocean.
All in all, the Weimar paleontologist determined a total distribution area of 33,301,000
square kilometers for these large mammals — almost 100 times the area of Germany today.
Antarctic sea ice extent reached a record high this year on 22 September, topping 20 million
square kilometers for the first time since 1979, according to the National Snow and Ice Data Center.
Although Madagascar has set aside tens of thousands of
square kilometers for national parks and reserves, illegal logging is still rampant (SN Online: 1/16/15).
Maps range in size from less than 1
square kilometer for urban maps up to 25 square kilometers for battles that took place in more open places such as the desert of North Africa.
Not exact matches
Western Watersheds Project and Center
for Biological Diversity also want to block upcoming sales covering 1,800
square miles (4,662
square kilometers) in those four states plus Idaho.
For example, the report pointed out the population densities in Australia and Canada are 3.1 and 3.9 people per
square kilometer.
The most populous nation on earth instated the ban in 2000
for fear of corrupting its youth, but will now allow
for distribution of consoles in the Shanghai Free Trade Zone — a 29 -
square -
kilometer testing ground
for new economic reforms established last year.
The mining activity was proposed
for a 65
square kilometre region between 22 and 36
kilometers offshore.
The Alberta government has leased almost 100,000
square kilometers of the oil sands deposit, so the potential certainly exists
for an industrial project on the scale of England, if a little smaller.
Through two separate joint venture agreements, one with Millennium Minerals and another with the Creasy Group, Novo is undertaking systematic exploration
for gold - bearing reefs across this approximately 560
square kilometer project.
A network of smaller peatlands in the Amazon Basin adds up to 629,000
square kilometers, an even larger area than the Congo find, says study coauthor Louis Verchot of the International Center
for Tropical Agriculture in Cali, Colombia.
Considering that the Greenland and Antarctic ice sheets span more than 1.7 million and 14 million
square kilometers, respectively, while containing 90 % of the world's freshwater ice supply, melting of ice shelves could be catastrophic
for low - lying coastal areas.
The later arrival indicated by Planck is good news
for observers hoping to see the light from the first stars with next - generation instruments that will soon come online, like the James Webb Space Telescope and the
Square Kilometer Array.
In 2016, he and colleagues produced a report
for the city of Louisville, Ky., that analyzed the impact of adding 450,000 trees, converting 168
square kilometers of surfaces to cool materials and more.
For context, 780,000
square kilometers (301,000
square miles) is greater than the area of Texas.
The researchers looked at annual maximum land surface temperatures averaged across 8 - day periods throughout the year
for every 1 -
square kilometer (247 acres) pixel on Earth.
Under normal circumstances, groups of two or three whales tend to dive in synchrony across tens of
square kilometers to hunt
for food.
Thousands of eggs litter the
square -
kilometer site near Auca Mahuida today, so many that researchers call the area Auca Mahuevo — huevo is Spanish
for «egg.»
The larger Białowieża Forest, which extends beyond the national park and covers about 1500
square kilometers, has been protected
for more than 600 years.
According to a 2013 analysis conducted by Packer, it is cheaper to manage lions in fenced reserves at around $ 500 per
square kilometer (not counting the high cost of installing the fence in the first place) than in unfenced areas, where $ 2,000 is only sufficient
for managing a population at half its potential density.
In the city of Rio de Janeiro, the project is treating about 150
square kilometers over the course of two years and aims to protect 2.5 million city - dwellers
for years to come.
An imperiled caribou herd in western Alberta province in Canada could become a high - profile test case
for a controversial plan to save some of Canada's woodland caribou from extinction: herding them into pens enclosing 100
square kilometers or more and ringed with electric fences, and killing or removing every predator inside.
If 10
square kilometers are monitored
for the next breaking - and - entering crime in a series, the model can detect an average of 65 % of the crimes.
For starters, he wants better safeguards for 12,000 square kilometers of coral reefs in the Northwest Hawaiian Islands, home to nearly 70 % of U.S. ree
For starters, he wants better safeguards
for 12,000 square kilometers of coral reefs in the Northwest Hawaiian Islands, home to nearly 70 % of U.S. ree
for 12,000
square kilometers of coral reefs in the Northwest Hawaiian Islands, home to nearly 70 % of U.S. reefs.
That's the 140,000 -
square -
kilometer area that feeds many of Texas's major rivers, such as the Nueces, Frio, Guadalupe, and Llano, as well as the Edwards Aquifer — possibly the most critically important water resource
for the state.
Between 1985 and 1999,
for example, most of the 10 -
kilometer - wide buffer zone around the 1000 -
square -
kilometer Gunung Palung National Park was felled.
Martin Dokulil of the Institute
for Limnology at the University of Innsbruck studied data from nine lakes larger than 10
square kilometers, or about 2,500 acres.
The bay is crucial to knots and other shorebirds because its 600
square kilometers of mud and sand are filled with enough clams and mussels
for the birds to feast on
for months, Morrison says.
Mount Vesuvius, the volcano most famous
for blanketing the towns of Pompei and Herculaneum with lava and debris in A.D. 79, may be sitting atop a reservoir of magma that covers more than 400
square kilometers, a new study suggests.
This year's maximum extent, reached on March 7 at 5.57 million
square miles (14.42 million
square kilometers), is 37,000
square miles (97,00
square kilometers) below the previous record low, which occurred in 2015, and 471,000
square miles (1.22 million
square kilometers) smaller than the average maximum extent
for 1981 - 2010.
Digby Race of the Cooperative Research Centre
for Remote Economic Participation, in Alice Springs and The Australian National University, in Canberra and colleagues from other universities, report that there is great potential
for 200,000 people who live in Australia's vast desert area which covers about 3.6 million
square kilometers.
Lightning is blamed
for setting off the fires, including a massive blaze that has destroyed around 42
square miles (110
square kilometers) of forestland, along with 16 homes, and has threatened the Tassajara Zen Mountain Center, America's oldest Buddhist monastery in the Big Sur region of California.
The early September rate of decline also greatly exceeded the rate observed
for the same period during the record low year of 2012 (19,000
square kilometers, or 7,340
square miles, per day).
Over protests from conservation and citizen groups, on August 14 the BLM auctioned off energy leases
for all of the remaining public land on the Roan encompassing 54,631 acres (221
square kilometers).
The team's simulations estimate this slowdown effect results in a practical upper limit of 1 megawatt per
square kilometer that can be generated — far less than previous estimates not accounting
for the effect.
Gross,
for his part, estimates that the entire state of California's peak electricity demand could be generated from an eSolar field of 65
square kilometers.
The IUCN, using data from British - based environmental group Earthsight, found that palm oil already covers 1,000
square kilometers of Central Africa and that 1 million
square kilometers in the region are suitable
for the crop.