Sentences with phrase «ice data time»

Ice data time series for harbours, rivers and lakes on three continents.»

Not exact matches

Sedimentary layers, stalact.ites, water erosion over time, ice core data, tree rings, isotope decay rates.

It is much cheaper to test ice cores, which capture years of data in one core, than to do repeated air sampling over time.

Our study is significant because, while there are various different estimates for the start and end of the Little Ice Age in different regions of the world, our data show that the most extreme phases occurred at the same time in both the Northern and Southern Hemispheres.

«Many people look at this ice - shelf data and will fit a straight line to the data, but we're looking at all the wiggles that go into that linear fit, and trying to understand the processes causing them,» said Fricker, who was Paolo's PhD adviser at the time the study was conceived.

«These assessments of ice shelves need to be done regularly» to build up a time series of data — and ultimately to be able to separate a trend signal from the noise.

NUI took its first dip in the Arctic in July, exploring the under — sea ice environment and relaying environmental data and video back to its operators in real time.

Rasmussen has analysed meteorological data from the time of the accident and he estimates that snow was falling on the plane at the rate of 2.5 millimetres per hour — fast enough to coat the plane's wings with enough ice to cause a crash.

In 2006, satellite data suggested the ice sheet was disappearing three times faster than previously thought.

Pettersen is hopeful that, with more data analysis over longer periods of time, researchers will find more answers yet to account for the melting ice sheet and the subsequent sea level rise that has already had an impact on regions across the planet.

By comparing the EPICA air bubbles data to that from other ice cores and marine sediments, researchers can create a reliable picture of the climate over time.

«The unmanned SRB buoy we built made it possible for the first time to generate continuous data on albedo and other properties of sea ice over a long period,» says Dr Gerland.

This past September the National Snow and Ice Data Center in Boulder, Colo., which collects polar and ice information for the government, announced that there was less sea ice covering the Arctic Ocean than at any time since satellite measurements began in 19Ice Data Center in Boulder, Colo., which collects polar and ice information for the government, announced that there was less sea ice covering the Arctic Ocean than at any time since satellite measurements began in 19ice information for the government, announced that there was less sea ice covering the Arctic Ocean than at any time since satellite measurements began in 19ice covering the Arctic Ocean than at any time since satellite measurements began in 1979.

After Levy and colleagues noted visible effects of ground ice retreat in Garwood Valley, they began to monitor the valley, combining time - lapse photography and weather - station data at 15 - minute intervals to create a detailed view of the conditions under which the ice, a relict from the last ice age, is being lost.

This new research into GOCE's gravity data revealing ice loss over time is being carried out through ESA's Earth Observation Support to Science Element.

For the first time, ocean data from Northeast Greenland reveals the long - term impact of the melting of the Greenland ice sheet.

The results now published in Environmental Research Letters seem to contradict the data from a satellite mission based on other measuring methods, which indicates a slight increase in mass in the glacier ice for an almost identical period of time.

Data suggest that although the ice - rich rings have only 15 % of Chariklo's surface area, they reflect almost three times as much light on an area - to - area comparison.

«Within a few months» of a breakup, explains glaciologist Ted Scambos of the National Snow and Ice Data Center at the University of Colorado at Boulder, the glacier «accelerates significantly, and within a year or two, it can be moving [toward the ocean] up to four times as fast as it moved when the ice shelf was intact.&raqIce Data Center at the University of Colorado at Boulder, the glacier «accelerates significantly, and within a year or two, it can be moving [toward the ocean] up to four times as fast as it moved when the ice shelf was intact.&raqice shelf was intact.»

According to the team's data, ice advanced from the Aurora Basin and retreated back again at least 11 times during the first 20 million years of the ice sheet's history.

They verified the fraction with previous experimental data on how the height of accumulated ice affects rime ice accretion over time.

«This shift to earlier weaning age in the time leading up to woolly mammoth extinction provides compelling evidence of hunting pressure and adds to a growing body of life - history data that are inconsistent with the idea that climate changes drove the extinctions of many large ice - age mammals,» said Cherney, who is conducting the work for his doctoral dissertation in the U-M Department of Earth and Environmental Sciences.

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.

The lack of many kinds of data — high - resolution topography and bathymetry along the coasts; measurements of ice cover and thickness; distributions in space and time of the region's fish, birds, and marine mammals — is another.

New data indicate that substantial areas throughout westernmost Canada were ice free prior to 12.5 ka and some as early as 14.0 ka, with implications for climate dynamics and the timing of meltwater discharge to the Pacific and Arctic oceans.

Wiens is careful not to get out in front of the data, but he does say that over a long period of time, there is a danger the West Antarctic ice sheet will melt.

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.

The temperatures at and near the equator are generally too high to support ice at the surface for a long time, study authors say, but data from Dawn's next orbit will reveal more details.

Estimates from the National Snow and Ice Data Center indicate that roughly half the ice sheet's surface is melting, well above the average of around 25 percent for this time of yeIce Data Center indicate that roughly half the ice sheet's surface is melting, well above the average of around 25 percent for this time of yeice sheet's surface is melting, well above the average of around 25 percent for this time of year.

Researchers from the project Svalbard ice cores and climate variability (SVICECLIM) have combined these valuable time series with data from ice cores drilled at three different sites in Svalbard.

The researchers used the measured temperatures from these two sites and the isotope data from the ice core from the overlapping time period (a method called «scaling») to quantitatively reconstruct earlier temperature variations.

The Canadian Ice Service detected the remote event within hours in near - real - time data from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite.

We used Sentinel - 1 satellite data to watch a giant iceberg four times the size of London break free from Antarctica's Larsen - C ice shelf in 2017, and now students can use the same data to measure if new icebergs calve off some of the fastest flowing glaciers in the world!»

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Hart (1978) gives the following rough relation for the fraction of Earth's surface covered by ice, going from satellite data available at the time:

We also include data from the new WAIS Divide ice core that goes back 2000 years (actually, this core goes back to 68,000 years, and is annually resolved back to at least 30,000 years, but that's a story for another time).

[Response: This is a very frequent error (Watts has made it many times before), and stems from their confusion between the HadCRUT data set (which is a collaboration between the Hadley Centre (providing SST and sea ice cover) and the CRU (which provides the met station analysis) and the actual institutions (which are completely independent and separated by a couple of hundred miles).

Shallow coastal waters that cool quickly may provide lingering April ice in the Arctic in 120 years or so, justifying a sigmoid treatment of the source function at that time, but perhaps it is not appropriately applied to September data now.

We know from data that we have caused the CO2 concentration in the atmosphere to rise sharply during the past century: it is now much higher than any time during the past 650,000 years (which is as far back as reliable ice core data exist).

Mike's work, like that of previous award winners, is diverse, and includes pioneering and highly cited work in time series analysis (an elegant use of Thomson's multitaper spectral analysis approach to detect spatiotemporal oscillations in the climate record and methods for smoothing temporal data), decadal climate variability (the term «Atlantic Multidecadal Oscillation» or «AMO» was coined by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measurements).

Second, although the central Greenland ice - core records may provide the best paleoclimatic temperature records available, multiple parameters confirm the strong temperature signal, and multiple cores confirm the widespread nature of the signal, the data still contain a lot of noise over short times (snowdrifts are real, among other things).

Decadal hindcast simulations of Arctic Ocean sea ice thickness made by a modern dynamic - thermodynamic sea ice model and forced independently by both the ERA - 40 and NCEP / NCAR reanalysis data sets are compared for the first time.

For one thing, the timing with the industrial revolution is hard to dismiss as a coincidence, especially since it is known that CO2 levels haven't been as high as they are now for at least ~ 1 million years (over which we have very good data from ice cores) and likely for the last 20 million years.

I mean, obviously the actual time and date of ice out reflects changes in (local) climate, but the guesses would reflect what people who live in the region perceive as «normal» which would also be important data.

>... there are still ways of discovering the temperatures of past centuries,... tree rings... Core samples from drilling in ice fields... historical reconstruction... coral growth, isotope data from sea floor sediment, and insects, all of which point to a very warm climate in medieval times.

This can cause data estimates to snowball, and it might account for the apparent accellerating decline of the ice volume time series.

For example, the sea ice data and ocean temperature data are looking more and more convincing with time.

The Antarctic ice core data is presently to the public very loosely, often in the interest of time or print space (I did so myself in a talk with high school students last week).

The team, which Marc led and provided the logistical support for, deployed from Resolute to Nord Greenland before setting up a rustic field camp on the sea ice for six days, during which time we mechanically drilled the ice to measure thickness, measuring snow depth in a grid pattern along the flight lines as well as dragging instruments along the surface that produced the same measurements for comparison to the airborne data.

You would have to check ice cores for methane data at that time, but I'm fairly sure that CO2 didn't go above 290 ppm.