Sentences with phrase «co2 measurement»

We did so by estimating monthly fluxes and their uncertainty over a one - year period between June 2009 and May 2010 from 1) observational data collected in existing networks of surface CO2 measurement sites (GLOBALVIEWCO2 2010; extrapolated to the year 2010) and 2) both the surface observations and column - averaged dry air mole fractions of CO2 (XCO2) retrieved from GOSAT soundings.

The lagging is a question of closing depth of the bubbles, while the resolution is a matter of diffusion of CO2 through the firn before the bubbles close and the number of layers necessary to have enough sample for a CO2 measurement.

Even those who are, or who claim to be, unpersuaded by climate science, typically accept the now longstanding standard CO2 measurement data.

The smearing is similar to conduct of a running mean on CO2 measurement data from ice which solidified in each single year.

Dr. Zbigniew Jawowroski, a world authority, and former IPCC chair of the ice core analysis group has always complained that CO2 measurement has not been corrected for the clathrate formation of CO2 under merely a few atmosphere of pressure, such as occurs as ice piles up.

Consistent with this, the annual average atmospheric CO2 measurement stations in the Northern Hemisphere (NH) record slightly higher CO2 concentrations than stations in the Southern Hemisphere (SH).

Another CO2 measurement provides evidence of smoothing effects and artificially low readings.

Bunny Labs has had a word or two or three or four to say about Ernst - Georg Beck who never met a CO2 measurement he did not accept as representative of the background atmosphere, especially when it was taken in the middle of Paris or some other large city, which as we all know has a bit more CO2 in the air, then in your average fizzy beverage of choice.

When we have a full lateral and vertical system of CO2 measurement and reporting on a 1 km grid over the whole world surface; then I will agree we have something to work with.

(Dr. Charles Keeling, who created the Mauna Loa Observatory CO2 measurement program, investigated the Suess effect as related to atmospheric CO2 as far back as 1979.)

In this latter paper he estimated a figure of 0.7 C for doubling, although the base CO2 measurement used might be contentious.

It is well known that the Mauna Loa CO2 measurement also shows the annual effect of vegetation on CO2.

Selecting measurements from the low end of the spectrum was robustly justified in the article Fonselius and the history of CO2 measurement carried here;

He does this using the difference between the CO2 measurement six months after a given month and the measurement six months before.

Here we construct a database of worldwide RS observations matched with high - resolution historical climate data and find a previously unknown temporal trend in the RS record after accounting for mean annual climate, leaf area, nitrogen deposition and changes in CO2 measurement technique.

Science historians would point out that Professor Revelle did not prompt the first CO2 measurement in the atmosphere; what he prompted was the first sampling of air from locations around the world, and it was actually Harry Wexler, the head of the Weather Service at the time, who prompted and actually funded the start of the long - term monitoring program by David Keeling on Mauna Loa — so Revelle did play a very important role in stimulating observations (and in 1965 he chaired the panel on this issue that prepared a quite insightful appendix for the report of the President's Scientific Advisory Council), but Revelle was not the very first to urge CO2 be measured in the atmosphere.

If my quick notes are right, the movie seemed to also give the impression that the CO2 measurement was done by balloon — it is done by flask.

The choice of region Poon for CO2 measurement, seems at first glance quite sensible: — Near equator (NH has higher CO2 than SH — the same argument that makes Mauna Loa a good choice)-- Appear to be average vegetation.

Other stations of the global CO2 measurement network show almost exactly the same; the most important regional variation is the greatly subdued seasonal cycle at stations in the southern hemisphere.

The peak CO2 measurement of 2014 was just shy of 402 ppm in May.

They all show roughly the same pattern of increasing CO2.50 years is not a long time period And the CO2 measurements carry no definitive anthropogenic fingerprints.

Scripps geochemist Ralph Keeling, who took over the CO2 measurements started by his father Charles, is neither surprised nor disappointed.

That core is now the gold standard for CO2 measurements.

The American Chemical Society has named the graph that charts that rise — called the Keeling Curve, so named after the scientist who began the CO2 measurements — as a National Historic Chemical Landmark.

The sawtooth pattern in the graphic shows just that in careful CO2 measurements over the past half - century or so: it builds during winter when deciduous trees are leafless, then declines in summer when the trees and vegetation take in the CO2 before the process starts building again the next fall.

Dargaville, R.J., et al., 2002: Evaluation of terrestrial carbon cycle models with atmospheric CO2 measurements: Results from transient simulations considering increasing CO2, climate, and land - use effects.

An environmental engineer with Architectural Energy Corp. in Boulder, Colo., he's quite familiar with CO2 measurements in buildings.

Google Ernst - Georg Beck for a synoptic paper on 180 years of CO2 measurements in the atmosphere, some by Nobel prize winning chemists.

I asked a related question here: http://www.blogger.com/profile/07521410755553979665 ``... would higher and lower CO2 measurements in a forest, compared to a polar icecap, suggest an actual flow of CO2 going on, out of or into the soil in which the trees are growing?»

we use global - scale atmospheric CO2 measurements, CO2 emission inventories and their full range of uncertainties to calculate changes in global CO2 sources and sinks during the past 50 years.

(2) The observed inter hemispheric difference between the CO2 measurements at the Mauna Loa and the South Pole stations tracks beautifully the temporal increase and variation of the fossil fuel emissions over the last 55 years.

If anyone is still uncertain about how consistent CO2 measurements are globally, please go to the World Data Center for Greenhouse Gases, search for CO2 data from various stations, and look at them yourself.

André, we don't have accurate CO2 measurements even for today and for the last year!!!

CO2 measurements are suspect «The Keeling curve, which is widely used to show the increase in CO2 emissions, is based on data from the top of Mount Mauna Loa in Hawaii.

Mauna Loa is a volcano and it doesn't seem to me that a volcano is the best place to be taking CO2 measurements» (disinter)

Re: Ferdinand Engelbeen (# 182) In this series of data the CO2 Measurements for Barrow, Alaska drop to a minimum each year during August (months 8, 20 & 32).

a) People would find it interesting to take measurements of c02 b) Some of us are increasingly sceptical about «official» figures - such as the nonsensical global temperatures since 1850, sea levels and co2 measurements.

I have the impression that you are comparing the problems of CO2 measurements too close to the problems involved with temperature measurements.

I am reasonably sure that the statement in Wikipedia was not meant to be a statement about the concentration of CO2 in the air there in PPMV (parts per million by volume), as the South Pole CO2 measurements show the CO2 levels there are in the same neighborhood as they are elsewhere.

Having looked in detail at the 1930's and 1940's co2 measurements I can confirm they seem perfectly genuine.

Thus there is no reason the doubt the value of the ice core CO2 measurements and all observations support that dT is a limited driver of CO2 levels, from fast (3 ppmv / °C) on short term (months) to slow (8 ppmv / °C) over millennia.

But as to CO2 measurements all over the world, the NOAA results are quite astonishing.

Questions: 1) Am i to understand that the scientist that for years in the 1940» ies consequently got CO2 measurements directly from the atmosphere over 400 ppm, consequently took the measurements in the peak - hour of the days?

That the ice core CO2 levels are reasonable for CO2 measurements can be seen as different ice cores at very different snow / ice temperatures, inclusions (coastal salts vs. inland salts content), accumulation rates, ice age — gas age differences,... show the same CO2 levels (within 5 ppmv) for overlapping periods of gas age.

Including this, there is an overlapping period of about 20 years between the ice core CO2 measurements and the south pole atmospheric measurements:

Ice - core CO2 measurements are direct measurements on air that has been enclosed in bubbles.

About CO2 measurements near ground over land: for the first 20 m the CO2 sources and sinks are not mixed at all, except if there is sufficient wind speed.

We thank the technical team on the field and at both laboratories, G. Hausammann for helping with the CO2 measurements, and B. Stauffer, J. Schwander, M. Leuenberger, F. Joos, V. Masson - Delmotte, G. Dreyfus and C. Körner for their input.

Scientists make CO2 measurements in remote locations to obtain air that is representative of a large volume of Earth's atmosphere and relatively free from local influences that could skew readings.

The analytical methods for routine CO2 measurements used at the University of Bern and at LGGE in Grenoble are based on dry extraction techniques followed by laser absorption spectroscopy and gas chromatography, respectively.