Sentences with phrase «temperature observations since»

The ACORN - SAT dataset is an analysis of Australian temperature observations since 1910 that provides a record of temperatures that can be compared through time.

However, it is accurate that 2011 and 2010 had the consecutive hottest mean maxima recorded at any of the three Perth locations used for temperature observations since 1897.

Reassessing biases and other uncertainties in sea - surface temperature observations since 1850 part 1: measurement and sampling errors.

Not exact matches

Scientific observations show that in the Arctic, warming temperatures have led to a 75 % loss in sea ice volume since the 1980s, and recent reports suggest the Arctic Ocean will be nearly free of summer sea ice by 2050, said Sullivan.

The controversial observation could be explained by the mission's previous discovery of perchlorate salts in the soil, since the salts can keep water liquid at sub-zero temperatures.

Rising temperatures have caused the amount of Arctic sea ice to shrink dramatically since global observations began in the 1970s.

The observation that temperatures have not been rising since 1998 is generally raised as a «tongue - in - cheek» comment.

Since the UHI effect is reduced in windy conditions, if the UHI effect was a significant component of the temperature record, then we would see a different rate of warming when observations are stratified by calm or windy conditions.

http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-11-00148.1 Global satellite observations show the sea surface temperature (SST) increasing since the 1970s in all ocean basins, while the net air — sea heat flux Q decreases.

Since the temperature changes since 1979 are on the order of 0.6 C or so, it is relatively easy for bias, due to changing observation times, to swamp the underlying climate siSince the temperature changes since 1979 are on the order of 0.6 C or so, it is relatively easy for bias, due to changing observation times, to swamp the underlying climate sisince 1979 are on the order of 0.6 C or so, it is relatively easy for bias, due to changing observation times, to swamp the underlying climate signal.

And since we don't have good ocean heat content data, nor any satellite observations, or any measurements of stratospheric temperatures to help distinguish potential errors in the forcing from internal variability, it is inevitable that there will be more uncertainty in the attribution for that period than for more recently.

The observation that temperatures have not been rising since 1998 is generally raised as a «tongue - in - cheek» comment.

While land surface observations go back hundreds of years in a few places, data of sufficient coverage for estimating global temperature have been available only since the end of the 19th century.

This was one of the motivations for our study out this week in Nature Climate Change (England et al., 2014) With the global - average surface air temperature (SAT) more - or-less steady since 2001, scientists have been seeking to explain the climate mechanics of the slowdown in warming seen in the observations during 2001 - 2013.

Air temperature increases similar to those observed aloft since 1960, amplified by associated increases in humidity, account for a significant portion of the enhanced ablation leading to this strongly negative mass balance, but the exact proportion is highly uncertain because of the short span of energy and mass balance observations.

If the predicted cooling by la Nina had not occurred then 2008 would probably have been the same temperature (given the uncertainties) as every year since 2001 and that in itself would require explanation.I am broadly in favour of the global warmingCO2 hypothesis but I know it is just that, a hypothesis — and that needs testing against real observations in the physical world.

Even putting aside the OHC data and fingerprinting, there is absolutely no evidence in model simulations (or in prevailing reconstructions of the Holocene), that an unforced climate would exhibit half - century timescale global temperature swings of order ~ 1 C. I don't see a good theoretical reason why this should be the case, but since Judith lives on «planet observations» it should be a pause for thought.

A combination of low winter snow accumulation and warm spring temperatures created a new record low spring snow cover duration over the Arctic in 2010, since satellite observations began in 1966.

To conclude, a projection from 1981 for rising temperatures in a major science journal, at a time that the temperature rise was not yet obvious in the observations, has been found to agree well with the observations since then, underestimating the observed trend by about 30 %, and easily beating naive predictions of no - change or a linear continuation of trends.

Multiple satellite measurements and ground - based observations have determined the ozone layer has stopped declining since 1995 while temperature trends continue upwards.

A main control on atmospheric CO2 appears to be the ocean surface temperature, and remains a possibility that a significant part of the overall increase of atmospheric CO2 since at least 1958 (start of Mauna Loa observations) simply relflects the gradual warming of the oceans as a result of the prolonged period of high solar activity since 1920 (Solanki et al., 2004).

These observations are consistent with the observed increase in temperatures and represent an important advance since the TAR.

I can recall being censored off of RealClimate for asking Gavin why NOAA still published radiosonde and satellite observations since 1948 showing that tropospheric humidity did NOT increase with temperature over the long term if these were wrong.

Six additional years of observations since the TAR (Chapter 3) show that temperatures are continuing to warm near the surface of the planet.

A new NASA and University of Tasmania study combined the ship's 135 - plus - year - old measurements of ocean temperatures with modern observations to get a picture of how the world's ocean has changed since the Challenger's voyage.

In reconstructing the changes in global mean temperature since 1850, Berkeley Earth has examined 16 million monthly average temperature observations from 43,000 weather stations.

Surface warming / ocean warming: «A reassessment of temperature variations and trends from global reanalyses and monthly surface climatological datasets» «Estimating changes in global temperature since the pre-industrial period» «Possible artifacts of data biases in the recent global surface warming hiatus» «Assessing the impact of satellite - based observations in sea surface temperature trends»

Ocean warming: «Assessing recent warming using instrumentally homogeneous sea surface temperature records» «Tracking ocean heat uptake during the surface warming hiatus» «A review of global ocean temperature observations: Implications for ocean heat content estimates and climate change» «Unabated planetary warming and its ocean structure since 2006»

# 1: Historical surface temperature observations over since the middle of the 20th century show a clear signal of increasing surface temperatures.

A recent study by Cowtan et al. (paper here) suggests that accounting for these biases between the global temperature record and those taken from climate models reduces the divergence in trend between models and observations since 1975 by over a third.

«Reassessing biases and other uncertainties in sea surface temperature observations measured in situ since 1850: 1.

Since then there are a number of papers published on why the warming was statistically insignificant including a recent one by Richardson et al. 2016 which tries to explain that the models were projecting a global tas (temperature air surface) but the actual observations are a combination of tas (land) and SST oceans, meaning projected warming shouldn't be as much as projected.

Reassessing biases and other uncertainties in sea - surface temperature observations measured in situ since 1850, part 1: measurement and sampling uncertainties

Specifically, the methodology of polynomial cointegration is used to test AGW since during the observation period (1880 — 2007) global temperature and solar irradiance are stationary in 1st differences whereas greenhouse gases and aerosol forcings are stationary in 2nd differences.

««Climate model simulations that consider only natural solar variability and volcanic aerosols since 1750 — omitting observed increases in greenhouse gases — are able to fit the observations of global temperatures only up until about 1950.»

As Mosher points out, we don't need no stinkin» Modulz to understand that CO2 is overwhelmingly the dominant driver of temperature trends since the mid-20th Century... for that we've got observations.

Compare the SAR and the TAR for example, and since then we have many more proxy reconstructions to consider, the satellite analyses corrected, new data about energy imbalances, better observations of ocean currents and temperature, ice sheet behaviour in Greenland and Antarctica and much much more.

However, there is not compelling evidence that anthropogenic CO2 was sufficient to influence Earth's temperatures prior to 1950, i.e. «Climate model simulations that consider only natural solar variability and volcanic aerosols since 1750 — omitting observed increases in greenhouse gases — are able to fit the observations of global temperatures only up until about 1950.»

Third, climate change and its variation, as represented by global temperatures in Chart # 4, is evident since the first decade of observations.

And while by eye I could conjecture 86 % of the one year CO2 rise were temperature - correlated in any yearly cycle, clearly there is much greater temperature variability in the region of Mauna Loa in a year (~ 5 - 10C) than there has been globally since observations started (~ 0.7 C), so one would only consider Dr. Spencer's claims plausible if the rise in CO2 since 1960 were smaller than the change in a single year by a factor of ten, rather than larger by an order of magnitude.

Sea surface temperature has been consistently higher during the past three decades than at any other time since reliable observations began in 1880.

«Assessing recent warming using instrumentally homogeneous sea surface temperature records» «Tracking ocean heat uptake during the surface warming hiatus» «A review of global ocean temperature observations: Implications for ocean heat content estimates and climate change» «Unabated planetary warming and its ocean structure since 2006»

In Stockholm, where temperature observations have been made since 1756, it is apparent that the temperature has been affected by the growing city.

SummaryFor two years beginning in 2013, a large team led by Sanjay Limaye set out to combine and compare the following: Venusian atmospheric data collected by probes in the 1970s and 1980s (used to create the Venus International Reference Atmosphere, or VIRA) Venus Express data on the vertical and horizontal structure of the atmosphereEarth - based observations of the upper atmosphere temperature structure of Venus made since VIRAFigure 1a: Vertical coverage of post-VIRA atmospheric structure experi....

This time period is too short to signify a change in the warming trend, as climate trends are measured over periods of decades, not years.12, 29,30,31,32 Such decade - long slowdowns or even reversals in trend have occurred before in the global instrumental record (for example, 1900 - 1910 and 1940 - 1950; see Figure 2.2), including three decade - long periods since 1970, each followed by a sharp temperature rise.33 Nonetheless, satellite and ocean observations indicate that the Earth - atmosphere climate system has continued to gain heat energy.34

This paper provides a significant basis for Tony Heller's consistent observations that summer temperatures in the US have declined since the 1930s, and further calls into question the official NOAA temperature record.

One approach is to estimate global temperature as a simple function of climate forcing and ENSO through a regression approach; perhaps the best - known example is Foster & Rahmstorf (2011), which found that when the impact of natural factors (volcanic eruptions, solar variations, and ENSO) is removed, the trend in global temperature has been remarkably steady since 1979 (when satellite observations of atmospheric temperature begin).

In November 2009 the BoM repaired a Daily Weather Observations database bug on its website that saw most WA temperatures for August 2009 adjusted up by as much as.5 C, with all averaged temperatures since that November correction being higher than before.

Summer (June — August) mean temperature in the region has increased by 0.82 °C since reliable observations were established in the 1950s, with the five hottest summers all occurring in the twenty - first century.

It seems to the writer that spreading global oceanic cycles of up to 30 years in length across 3 solar cycles results in a close enough match to fit temperature observations over the past few hundred years and especially since 1961.