Sentences with phrase «air temperature trends from»

These are the Simple Ocean Assimilation Data (SODA) scaled with the surface air temperature trends from the National Center for Enviromental Prediction (NCEP) / National Center for Atmospheric Research (NCAR).

Not exact matches

Complementary information to the Arctic warming analysis would be using DWT's of the few left Upper Air stations in the Circumpolar zone and crunch up temperature trends of the entire atmosphere, when variances from year to year are very small, but are mostly for the warmer.

I am very cuious if you found a variance between Upper Air and Surface warming... I calculated total amospheric refraction temperatures, ie from data extracted by analyzing optical effects, some of my results show an impressive yearly warming trend, much stronger than the surface based one.

A compilation of surface measurements of downward longwave radiation from 1973 to 2008 find an increasing trend of more longwave radiation returning to earth, attributed to increases in air temperature, humidity and atmospheric carbon dioxide (Wang 2009).

Back in 2008, a cottage industry sprang up to assess what impact the Thompson et al related changes would make on the surface air temperature anomalies and trends — with estimates ranging from complete abandonment of the main IPCC finding on attribution to, well, not very much.

411 SG Bolstrom, I am observing a particular trend unlike the recent past, whereas the Arctic air profiles are leaning more adiabatically during winter, this means a whole lot of confusion with respect to temperature trends, namely the high Upper Air should cool as the surface warms, and the reverse, the Upper air warms when heat from the lower atmosphere is transferred upwarair profiles are leaning more adiabatically during winter, this means a whole lot of confusion with respect to temperature trends, namely the high Upper Air should cool as the surface warms, and the reverse, the Upper air warms when heat from the lower atmosphere is transferred upwarAir should cool as the surface warms, and the reverse, the Upper air warms when heat from the lower atmosphere is transferred upwarair warms when heat from the lower atmosphere is transferred upwards.

Complementary information to the Arctic warming analysis would be using DWT's of the few left Upper Air stations in the Circumpolar zone and crunch up temperature trends of the entire atmosphere, when variances from year to year are very small, but are mostly for the warmer.

I am very cuious if you found a variance between Upper Air and Surface warming... I calculated total amospheric refraction temperatures, ie from data extracted by analyzing optical effects, some of my results show an impressive yearly warming trend, much stronger than the surface based one.

Re 9 wili — I know of a paper suggesting, as I recall, that enhanced «backradiation» (downward radiation reaching the surface emitted by the air / clouds) contributed more to Arctic amplification specifically in the cold part of the year (just to be clear, backradiation should generally increase with any warming (aside from greenhouse feedbacks) and more so with a warming due to an increase in the greenhouse effect (including feedbacks like water vapor and, if positive, clouds, though regional changes in water vapor and clouds can go against the global trend); otherwise it was always my understanding that the albedo feedback was key (while sea ice decreases so far have been more a summer phenomenon (when it would be warmer to begin with), the heat capacity of the sea prevents much temperature response, but there is a greater build up of heat from the albedo feedback, and this is released in the cold part of the year when ice forms later or would have formed or would have been thicker; the seasonal effect of reduced winter snow cover decreasing at those latitudes which still recieve sunlight in the winter would not be so delayed).

The trend toward earlier breakup was also correlated with rising spring air temperatures over the study area from 1950 to 1990.

[G] etting the [monsoon] forecast right remains a challenge, thanks to the complex — and still poorly understood — ways in which South Asia's monsoon rains are influenced by everything from atmospheric and ocean temperatures to air quality and global climate trends.

I've been looking at the Hansen material which involves tropical oceans and have had occasion to review some of the temperature data sets, including Agudelho and Curry, which is an interesting and useful comparison of satellite and surface trends — a topic in the air from the US CCSP report.

Surface measurements of downward longwave radiation A compilation of surface measurements of downward longwave radiation from 1973 to 2008 find an increasing trend of more longwave radiation returning to earth, attributed to increases in air temperature, humidity and atmospheric carbon dioxide (Wang 2009).

For the US MIDWEST, the air masses from the Pacific first have to pass more than a thousand kilometres of mountains and thus the temperature trends in the US Midwest have unusually little noise from ocean air temperature trends.

In Fig 22 you state that «air masses from the Pacific first have to pass more than a thousand kilometres of mountains and thus the temperature trends in the US Midwest have unusually little noise from ocean air temperature trends.»

The NAO's prominent upward trend from the 1950s to the 1990s caused large regional changes in air temperature, precipitation, wind and storminess, with accompanying impacts on marine and terrestrial ecosystems, and contributed to the accelerated rise in global mean surface temperature (e.g., Hurrell 1996; Ottersen et al. 2001; Thompson et al. 2000; Visbeck et al. 2003; Stenseth et al. 2003).

A compilation of surface measurements of downward longwave radiation from 1973 to 2008 find an increasing trend of more longwave radiation returning to earth, attributed to increases in air temperature, humidity and atmospheric carbon dioxide (Wang 2009).

To point out just a couple of things: — oceans warming slower (or cooling slower) than lands on long - time trends is absolutely normal, because water is more difficult both to warm or to cool (I mean, we require both a bigger heat flow and more time); at the contrary, I see as a non-sense theory (made by some serrist, but don't know who) that oceans are storing up heat, and that suddenly they will release such heat as a positive feedback: or the water warms than no heat can be considered ad «stored» (we have no phase change inside oceans, so no latent heat) or oceans begin to release heat but in the same time they have to cool (because they are losing heat); so, I don't feel strange that in last years land temperatures for some series (NCDC and GISS) can be heating up while oceans are slightly cooling, but I feel strange that they are heating up so much to reverse global trend from slightly negative / stable to slightly positive; but, in the end, all this is not an evidence that lands» warming is led by UHI (but, this effect, I would not exclude it from having a small part in temperature trends for some regional area, but just small); both because, as writtend, it is normal to have waters warming slower than lands, and because lands» temperatures are often measured in a not so precise way (despite they continue to give us a global uncertainity in TT values which is barely the instrumental's one)-- but, to point out, HadCRU and MSU of last years (I mean always 2002 - 2006) follow much better waters» temperatures trend; — metropolis and larger cities temperature trends actually show an increase in UHI effect, but I think the sites are few, and the covered area is very small worldwide, so the global effect is very poor (but it still can be sensible for regional effects); but I would not run out a small warming trend for airport measurements due mainly to three things: increasing jet planes traffic, enlarging airports (then more buildings and more asphalt — if you follow motor sports, or simply live in a town / city, you will know how easy they get very warmer than air during day, and how much it can slow night - time cooling) and overall having airports nearer to cities (if not becoming an area inside the city after some decade of hurban growth, e.g. Milan - Linate); — I found no point about UHI in towns and villages; you will tell me they are not large cities; but, in comparison with 20-40-60 years ago when they were «countryside», many small towns and villages have become part of larger hurban areas (at least in Europe and Asia) so examining just larger cities would not be enough in my opinion to get a full view of UHI effect (still remembering that it has a small global effect: we can say many matters are due to UHI instead of GW, maybe even that a small part of measured GW is due to UHI, and that GW measurements are not so precise to make us able to make good analisyses and predictions, but not that GW is due to UHI).

There are plenty of ways of looking at the surface air temperature record that all show no statistically significant change in trend from earlier decades, so any study that concludes sensitivity is different just with the addition of the past decade must be automatically suspect, and that's not even taking into account the heat going into the oceans.

However, the air temperature above the water would not show a zero trend, because of the energy transferred to the air from the boiling water.

We also have concordant observations from night - time maritime near surface air temperatures, which trend in the same direction.

b Trends surface temperature from the GOGA CAM3 simulations (background colorscale; air temperature over sea ice and SST elsewhere) along with the Z850 trend produced by the model simulations (black contours; negative dashed and positive solid; interval of 3 m / decade) and the simulated convective precipitation trends (positive green contours, negative red contours, contoured at − 0.7, − 0.3, − 0.1, 0.1, 0.3, and 0.7 mm / day / decade, shown only for 45 ° S — 45 ° N. (c) As in (b) but for the TOGA CAM3 simulations.

Actually Huang does recognize and talk about the difference in trends derived for a climate model between tas and tos using the GFLD CM2.1 model and there the authors report trend differences from 1875 to 2000 where the ocean air temperature trends are higher than the ocean surface temperature trends on the order of what the Cowtan paper found for several CMIP5 models.

We should be able to predict changes in global temperature trends from the net latitudinal position of all the air circulation systems and regional climate changes follow from those latitudinal shifts.

It is possible to compare the trends for earth and air temperatures from the same sites (first you need to learn how to extract the data from the NIWA database).

Norbert: if you include both land and sea temperatures combined then we are likely to see consecutive records broken month in - month out from now on until there is a large prolonged trend in land / air temps the other way which at the momenmt seems increasingly unlikely.

Of course there is uncertainty in the trends (both from fitting the OLS line, + / -0.6 ºC, and structurally, since RSS has slightly different numbers), and there is no expectation that TLT and surface air temperature should have identical trends (overall, TLT should be increasing a little faster than SAT — but this is also subject to noise over relatively short periods).

Fig. 11 Tropical cloud cover and global air temperature (29) The global millennial temperature rising trend seen in Fig11 (29) from 1984 to the peak and trend inversion point in the Hadcrut3 data at 2003/4 is the inverse correlative of the Tropical Cloud Cover fall from 1984 to the Millennial trend change at 2002.