If there were
a significant change in trend then you'd see a sustained departure from the long - term linear trend, but from the graph you can see that isn't the case.
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.
As should be clear, there is no evidence of
any significant change in trend post-1997.
Firstly, there's
no significant change in trend (given ARMA (1,1) noise), and secondly it ignores knowledge about what the climatological temperature is at the beginning of the trend.
These figures will need to be closely watched to assess the extent to which they represent
a significant change in trend but, taken at face value, they suggest that wages growth is becoming uncomfortably high.
It is too early, however, to tell whether these latest developments represent
a significant change in trend.
The behavior of the long - term and the short - term GMMA is usually sustained with
significant changes in the trend direction.
Not exact matches
Venture capital firms,
in particular, have long been overwhelmingly averse to funding female - run enterprises, «and I don't see a
trend line for any
significant change,» added Trish Costello, CEO and founder of Portfolia, a platform designed to help women invest
in entrepreneurial enterprises.
As noted
in The Price of Climate
Change, my colleagues and I believe these
trends will not only encourage
significant growth
in clean technologies, energy efficiency and renewable infrastructure, but also greater transparency and reporting on sustainability and the carbon footprints of corporations around the globe.
The movement of price provides evidence of the current
trend, but the MACD is flagging up
changes in momentum which can sometimes precede a
significant price reversal.
The megatrends illustrated
in Figure 1 represent five
significant trends in the global sector which are already
changing the F&A products demanded by consumers and the business models of F&A companies.
«Quenching Australia's thirst: a
trend analysis of water - based beverage sales from 1997 to 20111 published
in Nutrition & Dietetics has revealed
significant changes in what Australians are drinking.
Food Business News tracks the
trends that are driving
significant changes in the market for food and beverage products.
Most indicators of the state of biodiversity (covering species» population
trends, extinction risk, habitat extent and condition, and community composition) showed declines, with no
significant recent reductions
in rate, whereas indicators of pressures on biodiversity (including resource consumption, invasive alien species, nitrogen pollution, overexploitation, and climate
change impacts) showed increases.
The
trend in these responses
changed course last year, with slightly fewer Americans saying global warming would have a
significant effect
in their lifetimes.
For Japan, the results are again mixed with similar proportions of sites showing
significant positive and negative
trends for SOMO35 and AVGMDA8, but more
significant negative
trends for 3MMDA1 (~ 30 %),
in addition to a large fraction of sites showing weak or no indication of
change for both site types.
Mean annual minimum relative humidity showed a weak but
significant trend of − 0.127 % per decade but showed no
significant changes in affected area.
We assess the heat content
change from both of the long time series (0 to 700 m layer and the 1961 to 2003 period) to be 8.11 ± 0.74 × 1022 J, corresponding to an average warming of 0.1 °C or 0.14 ± 0.04 W m — 2, and conclude that the available heat content estimates from 1961 to 2003 show a
significant increasing
trend in ocean heat content.
No
significant change in the intake of dietary fiber was seen after the various interventions; however, a strong
trend toward a decrease was seen
in the LF group (18.7 ± 5.4 g, P = 0.015).
Associate Superintendent Judy Park and the Utah State Office of Education's data analysts created this telling report showing overall proficiency
in English Language Arts is
trending upward despite
significant demographic
changes, steady enrollment growth and reduced literacy funding.
This
trend is unlikely to shift
in the near term, unless we see
significant changes in the way that the BOJ and the European Central Bank (ECB) conduct monetary policy.
When analyzing interest coverage
trend over several accounting periods, it is important to consider
significant changes in the level of borrowings since the full extent of such
changes on future interest cover may not be entirely revealed due to the effect of additional borrowings or repayments of loans close to end of accounting periods.
[1] And the
trend couldn't be explained by the population of swallows living nearby (which increased over the study period), traffic volume (which «either did not
change significantly or increased, depending on the metric used»), or the number of avian scavengers
in the area («as none showed
significant increases
in our study area»).
Selections from the Ella Fontanals - Cisneros Collection, curated by Osbel Suárez, showcases a cross section of the collection and presents to the public a compilation of works by over 60 artists from North America, Latin America, Africa, Europe and Asia, who have witnessed and played key roles
in changes that have occurred
in the most
significant trends in art over the last fifty years.
For instance,
in your scenario of a 20 - yr temperature
change of 0.3 ºC + / - 0.18 ºC, assuming a natural noise level (observed standard deviation of detrended annual global temperatures from 1977 - 2004) of 0.085 ºC, a statistically
significant difference
in the
trend that leads to the lowest end of your range (a
change of 0.12 ºC) and the
trend that leads to the highest end of your range (0.48 ºC) doesn't begin to rise above the level of noise until around year 16 or 17.
Two things have
changed in recent years — first, the temperature
changes over the historical period are now more persistent, and so the
trend in relation to the year - to - year variability has become more
significant (this is still true even if you think there has been a «hiatus»).
«We caution that the question of when a statistically robust
trend can be detected
in damage time series should not be confused with the question of when climate - induced
changes in damage become a
significant consideration...
Interestingly, the paper «Climate
Trends and Global food production since 1980» (Lobell, Schlenker, Costa - Roberts,
in Sciencexpress, 5 May, Science 1204531) confirms my finding of the absence of climate
change in the USA: «A notable exception to the [global] warming pattern is the United States, which produces c. 40 % of global maize and soybean and experienced a slight cooling over the period... the country with largest overall share of crop production (United States) showed no [adverse] effect due to the lack of
significant climate
trends».
During 1976 — 2004, global
changes in surface RH are small (within 0.6 % for absolute values), although decreasing
trends of − 0.11 % − 0.22 % decade − 1 for global oceans are statistically
significant.
The CLAs advised against including this statement
in the SPM, noting that: the research is currently inconclusive; overestimation of the models is too small to explain the overall effect and not statistically
significant; and it is difficult to pinpoint the role of
changes in radiative forcing
in causing the reduced warming
trend, with Co-Chair Stocker referring to this issue as an «emerging science topic.»
In describing their findings, Do et al. report that across all three subsets of data, «more stations showed statistically significant decreasing trends [in streamflow] than statistically significant increasing trends,» which finding held regardless of whether the stations were filtered by the presence of dams or changes in forest cove
In describing their findings, Do et al. report that across all three subsets of data, «more stations showed statistically
significant decreasing
trends [
in streamflow] than statistically significant increasing trends,» which finding held regardless of whether the stations were filtered by the presence of dams or changes in forest cove
in streamflow] than statistically
significant increasing
trends,» which finding held regardless of whether the stations were filtered by the presence of dams or
changes in forest cove
in forest cover.
The Express Tribune: Pakistan urgently requires a national migration policy to pre-empt and mitigate any
significant migration
trends caused by
changes in climate, according to climate experts.
We assess the heat content
change from both of the long time series (0 to 700 m layer and the 1961 to 2003 period) to be 8.11 ± 0.74 × 1022 J, corresponding to an average warming of 0.1 °C or 0.14 ± 0.04 W m — 2, and conclude that the available heat content estimates from 1961 to 2003 show a
significant increasing
trend in ocean heat content.
And many regions have shown no
significant net
changes or
trends in either direction relative to the last few hundred to thousands of years.
If this is so, how can we expect reliable verbals from focus groups, some of whom have not had a
significant exposure to temperature
change trends in their adult lifetime?
How can there even be such «
trends» (i.e. a statistically
significant long - term
change in the overall index over say, 25 - year period)?
They explain how, overall, Antarctic sea ice cover (frozen sea surface), for separate reasons involving wind
changing in relation to the location of certain warming sea water currents, shows a slight upward
trend, though it also shows
significant melting
in some areas.
... incomplete and misleading because it 1) omits any mention of several of the most important aspects of the potential relationships between hurricanes and global warming, including rainfall, sea level, and storm surge; 2) leaves the impression that there is no
significant connection between recent climate
change caused by human activities and hurricane characteristics and impacts; and 3) does not take full account of the significance of recently identified
trends and variations
in tropical storms
in causing impacts as compared to increasing societal vulnerability.
Bearing
in mind that actual
trends are likely to vary from place to place, it appears that
changes in dipole moment could make a
significant contribution to long - term
changes in Sq amplitude.
With 2010 over, we now have 16 observations starting
in 1995, and (unsurprisingly to anyone who followed the argument thus far) the upward
trend is now statistically
significant at the 5 per cent level [1] That is, if climate
change since 1995 (the time of the first IPCC report, and well after Lindzen announced himself as a sceptic) had been purely random, the odds against such an upward
trend would be better than 20 to 1 against.
Trends in the peak magnitude, frequency, duration and volume of frequent floods (floods occurring at an average of two events per year relative to a base period) across the United States show large
changes; however, few
trends are found to be statistically
significant.
«Positive
trends in the numbers of 945 hPa and 950 hPa TCs
in the SIO are
significant but appear to be influenced to some extent by
changes in data quality.»
A global catalogue of catastrophe losses was constructed (MuirWood et al., 2006), normalised to account for
changes that have resulted from variations
in wealth and the number and value of properties located
in the path of the catastrophes... Once the data were normalised, a small statistically
significant trend was found for an increase
in annual catastrophe loss since 1970 of 2 % per year.
A
change in sign of the temperature
trend is a
significant result.
Scientists who study climate
change confirm that these observations are consistent with
significant changes in Earth's climatic
trends.
The Intergovernmental Panel on Climate
Change reported
in its most recent scientific assessment that «[n] o robust
trends in annual numbers of tropical storms, hurricanes, and major hurricanes... have been identified over the past 100 years
in the North Atlantic basin,» and that there are «no
significant observed
trends in global tropical cyclone frequency.»
It doesn't really
change much from
trends calculated for SAT
in the 1910 to 1945 period; the numbers to 2
significant digits are between 0.15 and 0.14 C / decade.
The simulations also produce an average increase of 2.0 °C
in twenty - first century global temperature, demonstrating that recent observational
trends are not sufficient to discount predictions of substantial climate
change and its
significant and widespread impacts.
I'm also curious to see if the new version of UAH temperatures has a
significant effect on the Cowtan and Way temperature reconstruction - the
changes in the UAH V6 Arctic temperature
trend (by a factor of almost 2) is quite
significant.
It is the 30 - year
significant downward
trend in Arctic sea ice extent, which has accelerated
in recent years, that is the important indicator of climate
change.