Sentences with phrase «sea ice extent data»

I think the claim that there are no reliable sea ice extent data before 1978 is a lie.

That's an oversight that I intend to rectify, starting with a dissection of Solomon's recent misrepresentation of the latest Arctic sea ice extent data, said to «augur» coming «global cooling».

Featuring large in the misrepresentated data is the laughable attempt by Tony Heller to graft on satellite Sea Ice Extent data onto Vinnikov et al (1980) Figure 5 (or more exactly Hoffert & Flannery (1985) fig 5.2).

For the July report we have applied the same analysis for two different sea ice extent data sets: 1) Bremen University (IUP) and 2) National Snow & Ice Data Center (NSIDC).

Sea ice extent data, however, has become skewed due to the strong downward trend in ice extent, with a wider spread of values and more values falling at the low end of the range.

Much has been made of the fact that the April 2010 sea ice extent data released by the National Snow and Ice Data Center (NSIDC) were near the long - term climatological average (Figure 4).

The diagrams below show sea ice extent data since 1979.

[17] Before the advent of satellite - based imagery in 1973, sea ice concentration data for the Antarctic are not available, and sea ice extent data are not readily available for indi - vidual months, seasons or years, although some visible and infrared data do exist for 1966 — 1972 [Zwally et al., 1983] and some undigitized charts reside in national archives (e.g., V. Smolyanitsky, personal communication, 2002).

Not exact matches

In an analysis, the National Snow and Ice Data Center said the sea ice extent as of Sept. 16 was 2 million square miles, an amount just below revised estimates for 2009, the former sixth place finisher, said Julienen Stroeve, a scientist at the centIce Data Center said the sea ice extent as of Sept. 16 was 2 million square miles, an amount just below revised estimates for 2009, the former sixth place finisher, said Julienen Stroeve, a scientist at the centice extent as of Sept. 16 was 2 million square miles, an amount just below revised estimates for 2009, the former sixth place finisher, said Julienen Stroeve, a scientist at the center.

Arctic: The average Arctic sea ice extent for August was 2.40 million square miles, 390,000 square miles (13.9 percent) below the 1981 - 2010 average and the seventh smallest August extent since records began in 1979 but the largest since 2009, according to the National Snow and Ice Data Centice extent for August was 2.40 million square miles, 390,000 square miles (13.9 percent) below the 1981 - 2010 average and the seventh smallest August extent since records began in 1979 but the largest since 2009, according to the National Snow and Ice Data CentIce Data Center.

Since then, its ten instruments have supplied data on environmental factors such as air quality, the extent of Arctic sea ice and oil spills.

According to the data, September sea ice extent from 1979 to 2013 has declined 13.7 percent per decade.

An image of an area of the Arctic sea ice pack well north of Alaska, captured by the MODIS instrument on NASA's Aqua satellite on Sept. 13, 2013, the day before the National Snow and Ice Data Center estimated Arctic sea ice to have reached its minimum extent for the yeice pack well north of Alaska, captured by the MODIS instrument on NASA's Aqua satellite on Sept. 13, 2013, the day before the National Snow and Ice Data Center estimated Arctic sea ice to have reached its minimum extent for the yeIce Data Center estimated Arctic sea ice to have reached its minimum extent for the yeice to have reached its minimum extent for the year.

According to a NASA analysis of satellite data, the 2015 Arctic sea ice minimum extent is the fourth lowest on record since observations from space began.

In contrast, the Scripps team opted to directly correlate albedo measurements made by NASA's CERES instrument data with observations of sea ice extent made by the Special Sensor Microwave Imager (SSM / I) radiometers aboard Defense Meteorological Satellite Program satellites.

This year, sea ice in the Arctic reached its smallest maximum extent since satellites began tracking polar ice patterns, according to the National Snow and Ice Data Center, while scientists have also forecast ice - free Arctic summers in two to three decades (ClimateWire, July 16, 201ice in the Arctic reached its smallest maximum extent since satellites began tracking polar ice patterns, according to the National Snow and Ice Data Center, while scientists have also forecast ice - free Arctic summers in two to three decades (ClimateWire, July 16, 201ice patterns, according to the National Snow and Ice Data Center, while scientists have also forecast ice - free Arctic summers in two to three decades (ClimateWire, July 16, 201Ice Data Center, while scientists have also forecast ice - free Arctic summers in two to three decades (ClimateWire, July 16, 201ice - free Arctic summers in two to three decades (ClimateWire, July 16, 2013).

The more data scientists can gather about Antarctic sea ice, the more they can unpick why climate models struggle to accurately predict its extent.

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 Centice 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 CentIce Data Center.

A: The National Snow and Ice Data Center (NSIDC) announced this week that the sea ice surrounding Antarctica reached its maximum extent — its widest halo around the continent — in 2014 on 22 September: more than 20 million square kilometers, which also set a record for the highest extent of sea ice around the continent since satellite measurements began in the late 197Ice Data Center (NSIDC) announced this week that the sea ice surrounding Antarctica reached its maximum extent — its widest halo around the continent — in 2014 on 22 September: more than 20 million square kilometers, which also set a record for the highest extent of sea ice around the continent since satellite measurements began in the late 197ice surrounding Antarctica reached its maximum extent — its widest halo around the continent — in 2014 on 22 September: more than 20 million square kilometers, which also set a record for the highest extent of sea ice around the continent since satellite measurements began in the late 197ice around the continent since satellite measurements began in the late 1970s.

The warmth made daily sea ice extents average about 232,000 square miles smaller than during any May in the 38 years scientists have been gathering data using satellites.

The extent of global sea ice coverage reached its smallest area ever recorded in 2016, new data show.

Sea ice extent was 402,000 square miles below average, according to the National Snow and Ice Data Centice extent was 402,000 square miles below average, according to the National Snow and Ice Data CentIce Data Center.

According to the latest Piomas data, a combination of the smallest sea ice extent and the second - thinnest ice cover on record puts total volume of sea ice in November 2016 at a record low for this time of year.

Just look at the plots taken from CMIP4 and CMIP5 models when they are compared with measured extents from NSIDC data then tell us where you would place your bet for a summer free of sea ice.

The average Arctic sea ice extent for November 2016 was 750,000 square miles (17.7 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NAice extent for November 2016 was 750,000 square miles (17.7 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NAIce Data Center using data from NOAA and NData Center using data from NOAA and Ndata from NOAA and NASA.

On September 10, Arctic sea ice reached its annual minimum extent at 1.60 million square miles, statistically tying 2007 as the second smallest extent in the 1979 — 2016 satellite record, according to the National Snow and Ice Data Centice reached its annual minimum extent at 1.60 million square miles, statistically tying 2007 as the second smallest extent in the 1979 — 2016 satellite record, according to the National Snow and Ice Data CentIce Data Center.

The data presented here indicate that the area of undersaturation presently extends to approximately 20 % of the Canadian Basin in the late summer months, when sea ice is near its minimum extent.

The average Arctic sea ice extent for October 2016 was 980,000 square miles (28.5 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NAice extent for October 2016 was 980,000 square miles (28.5 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NAIce Data Center using data from NOAA and NData Center using data from NOAA and Ndata from NOAA and NASA.

The average Arctic sea ice extent for December was 4.67 million square miles, according to analysis by the National Snow and Ice Data Center based on data from NOAA and NAice extent for December was 4.67 million square miles, according to analysis by the National Snow and Ice Data Center based on data from NOAA and NAIce Data Center based on data from NOAA and NData Center based on data from NOAA and Ndata from NOAA and NASA.

For other indicators — glacial retreat, sea level, arctic ice extent, etc. — the data is equally noisy, and it is difficult having a sensible discussion without the inevitable cherry - picking on both sides of the argument.

Although you really can't check this assertion since the data is not really available anywhere — the Cryosphere has some charts of sea ice area but where are the numbers — where are the sea ice extent numbers.

The latest data by NSIDC for Arctic sea ice extent shows that 2008 ice coverage has fallen to 2007 levels for the end of May:

Other data sets such as ocean heat content, sea ice extent, whatever, are not sufficiently mature or long - range (see Climate data records: maturity matrix).

Sea ice data prior to the satellite data is severely lacking, such that these types of attempts are used to recreate the extent of the sea ice as best we cSea ice data prior to the satellite data is severely lacking, such that these types of attempts are used to recreate the extent of the sea ice as best we csea ice as best we can.

Just look at the plots taken from CMIP4 and CMIP5 models when they are compared with measured extents from NSIDC data then tell us where you would place your bet for a summer free of sea ice.

Yes, I believe that the Walsh & Chapman reconstruction of sea ice extent uses such data.

Using comprehensive data sets of observations made between 1979 and 2001 of sea ice thickness, draft, extent, and speeds, we find that it is possible to tune model parameters to give satisfactory agreement with observed data, thereby highlighting the skill of modern sea ice models, though the parameter values chosen differ according to the model forcing used.

Further signs of this warming trend can be seen in the Northern Hemisphere Sea Ice Extent from the National Snow and Ice Data Center.

Using extent data up to 2010, they do not directly address the claim that the decline of extent in Arctic Sea Ice is linear vs the claim that it is accelerating.

If you plot the average Arctic Sea Ice extent for 20 years, the you should also plot the monthly maximum and minimum values on the same figure so that we can get some perspective on where the 2007 and 2008 data falls in the context of annual variability, or examine for trends.

So, I was curious about your recent paper and whether there was any discussion of changes in the THC poleward of the GIS shelf vs the data from the RAPID program line located at 26.5 N. With the decline in minimum extent and volume of sea - ice, one might expect to see more THC sinking into the Arctic Ocean, with consequences for both climate and weather.

The IPCC said:» Ice extent data from Russian sources have recently been published (Polyakov et al., 2003), and cover essentially the entire 20th century for the Russian coastal seas (Kara, Laptev, East Siberian and Chukchi).

Updated, July 23, 1:40 p.m. A new study of methods used to track Antarctic sea ice trends has raised important questions about whether recent increases in ice there are, to a significant extent, an illusion created by flawed analysis of data collected by a series of satellites.

ScienceDaily (Oct. 3, 2008)-- Arctic sea ice extent during the 2008 melt season dropped to the second - lowest level since satellite measurements began in 1979, reaching the lowest point in its annual cycle of melt and growth on Sept. 14, according to researchers at the University of Colorado at Boulder's National Snow and Ice Data Center.&raqice extent during the 2008 melt season dropped to the second - lowest level since satellite measurements began in 1979, reaching the lowest point in its annual cycle of melt and growth on Sept. 14, according to researchers at the University of Colorado at Boulder's National Snow and Ice Data Center.&raqIce Data Center.»

The National Snow and Ice Data Center released its summary of summer sea - ice conditions in the Arctic on Tuesday, noting a substantial expansion of the extent of «second - year ice» — floes thick enough to have persisted through two summers of meltiIce Data Center released its summary of summer sea - ice conditions in the Arctic on Tuesday, noting a substantial expansion of the extent of «second - year ice» — floes thick enough to have persisted through two summers of meltiice conditions in the Arctic on Tuesday, noting a substantial expansion of the extent of «second - year ice» — floes thick enough to have persisted through two summers of meltiice» — floes thick enough to have persisted through two summers of melting.

In March 2017, the annual maximum extent of Arctic sea ice hit a record low for the third straight year, according to the US National Snow and Ice Data Centice hit a record low for the third straight year, according to the US National Snow and Ice Data CentIce Data Centre.

Figure 3: National Snow and Ice Data Center (NSIDC) Antarctic, Arctic, and global (sum of the two) sea ice extents with linear trenIce Data Center (NSIDC) Antarctic, Arctic, and global (sum of the two) sea ice extents with linear trenice extents with linear trends.

Canadian Ice Service, 4.7, Multiple Methods As with CIS contributions in June 2009, 2010, and 2011, the 2012 forecast was derived using a combination of three methods: 1) a qualitative heuristic method based on observed end - of - winter arctic ice thicknesses and extents, as well as an examination of Surface Air Temperature (SAT), Sea Level Pressure (SLP) and vector wind anomaly patterns and trends; 2) an experimental Optimal Filtering Based (OFB) Model, which uses an optimal linear data filter to extrapolate NSIDC's September Arctic Ice Extent time series into the future; and 3) an experimental Multiple Linear Regression (MLR) prediction system that tests ocean, atmosphere and sea ice predictoIce Service, 4.7, Multiple Methods As with CIS contributions in June 2009, 2010, and 2011, the 2012 forecast was derived using a combination of three methods: 1) a qualitative heuristic method based on observed end - of - winter arctic ice thicknesses and extents, as well as an examination of Surface Air Temperature (SAT), Sea Level Pressure (SLP) and vector wind anomaly patterns and trends; 2) an experimental Optimal Filtering Based (OFB) Model, which uses an optimal linear data filter to extrapolate NSIDC's September Arctic Ice Extent time series into the future; and 3) an experimental Multiple Linear Regression (MLR) prediction system that tests ocean, atmosphere and sea ice predictoice thicknesses and extents, as well as an examination of Surface Air Temperature (SAT), Sea Level Pressure (SLP) and vector wind anomaly patterns and trends; 2) an experimental Optimal Filtering Based (OFB) Model, which uses an optimal linear data filter to extrapolate NSIDC's September Arctic Ice Extent time series into the future; and 3) an experimental Multiple Linear Regression (MLR) prediction system that tests ocean, atmosphere and sea ice predictoSea Level Pressure (SLP) and vector wind anomaly patterns and trends; 2) an experimental Optimal Filtering Based (OFB) Model, which uses an optimal linear data filter to extrapolate NSIDC's September Arctic Ice Extent time series into the future; and 3) an experimental Multiple Linear Regression (MLR) prediction system that tests ocean, atmosphere and sea ice predictoIce Extent time series into the future; and 3) an experimental Multiple Linear Regression (MLR) prediction system that tests ocean, atmosphere and sea ice predictosea ice predictoice predictors.

(08/10/2011) Average Arctic sea ice extent hit a new record low for July according to the National Snow and Ice Data Center (NSIDice extent hit a new record low for July according to the National Snow and Ice Data Center (NSIDIce Data Center (NSIDC).

The National Snow and Ice Data Center predicts this year's minimum summer sea ice extent won't break the record set in 20Ice Data Center predicts this year's minimum summer sea ice extent won't break the record set in 20ice extent won't break the record set in 2012.