The recent paper by Kate Marvel and others (including me) in Nature Climate Change looks at the different forcings and their climate responses
over the historical period in more detail than any previous modeling study.
Not exact matches
Their newest paper uses
historical data from multiple countries to show that an increase
in the ratio of household debt to gross domestic product
over a three - to - four - year
period predicts a decline
in economic growth.
And while NerdWallet emphasizes that past market performance doesn't guarantee you'll earn the average
historical return of 10 %
in the future, the value of investing
in stocks
over a long
period of time is still significant.
The rollercoaster ride
in oil prices
over the past three years may be old hat to investors familiar with the commodity's
historical sensitivity to macro events (see chart below), but oil price volatility is by no means endemic and several factors are now lining up to suggest a calmer
period for crude may lie ahead.
This rally has been so strong that many global indices have gone up
in a straight line, registering gains up to 300 %
over that time
period with volatility hitting
historical lows.
Finally, if we assume a sustained explosion
in productivity growth to 2.8 % annually, joining the highest quintile of
historical U.S. productivity growth rates for any 8 - year
period, and assuming an unemployment rate of just 4 %
in 2024, the result would still be real U.S. GDP growth averaging just 3.2 % annually
over the next 8 years.
The scenario model is pre-populated with data based on a large sample of U.S. public companies (more than 2,500 companies)
over a seven - year
period (2004 - 2011), as compiled by BoardEx.1 To access the pre-populated model calculations, click the Calculations /
Historical data and Attrition data tabs
in the Excel spreadsheet that you can download from this page.
Since the inception of the Fund (as well, of course,
in long - term
historical tests), our present approach to risk management has both added to returns and reduced volatility - not necessarily
in any short
period, but
over the complete market cycle.
In the charts below, you will be able to see the
historical performance of the Fund
over various
periods.
If you look at
historical market data,
over two - thirds of the best 30 weeks, for example, have occurred
in periods when market valuations were below their
historical medians.
If one excludes the 1980 - 1997
period, the
historical correlation between 10 - year Treasury yields and 10 - year prospective (and actual realized) equity returns is actually slightly negative
over the past century, and is only weakly positive
in post-war data.
In this book Bill Schultheis presents a simple investing plan built on establishing an investment portfolio of low cost index funds that, based on
historical performance, will generate positive returns
over a long time
period (10 + years).
Indeed,
in historical perspective the figures for membership and attendance could easily be used to argue that the so - called conservative churches have been growing less spectacularly
over the past 20 years than
in the
period from 1920 to 1965.
The
historical data [11] listed
in Table 2 shows that,
in the face of nationally falling abortions, down to 92 \ %
in 2009 versus 2000 levels, Planned Parenthood succeeded
in growing its abortions by 68 \ %, government funding by 79 \ % and contraception distribution by 38 \ %
over roughly the same
period.
The # 1m on paper profit for the financial year does not reflect that # 6.8 m was also spent on investment
in the first team squad
over the same time
period, nor that
historical liabilities totalling # 8.475 m had to be repaid.
When we look back at the
historical data summarised
in Figure 1 below, we find the
period since the mid-1980s has been one
in which successive governments have opted for small, year - to - year reductions
in the growth of overall public spending, rather than greater reductions
over a shorter
period.
He points out that
over that
period Britain experienced a severe recession and a significant squeeze on living standards and yet industrial relations
in Britain were generally good and the number of strikes were and still are low by
historical standards.
Finally, Manning and colleagues pored
over historical texts from Ptolemaic Egypt, comparing
periods of unrest with the volcanic record
in the ice cores.
Despite no
historical changes
in average annual precipitation between 1950 and 2015, there have been changes
in average seasonal precipitation
over the same
period.
Digital analysis of nearly 9,000 paintings spanning 10
historical periods (
over 800 years) depicts changes
in artists» pallets and identifies signatures that correspond with the development of new painting techniques.
Discover the
historical buildings and those men, women and children who worked
in them
over a 950 year
period as you get to take a step back
in time to learn more about what life was like
in rural West Sussex.
The film is a rare case of a
historical film not looking back on its source through the legacy it may have developed
over time (usually peppered with winking irony), but is presented straight, immersed
in the present of the
period depicted where the prospect of Nixon resigning is all but preposterous.
The average printed book cover is only about 50 square inches, but
in that space designers can evoke the whole range of emotions, allude to every
historical period, and — subtly and not so subtly — entice us to pick up the book, flip it
over, and get so interested that we just have to have it.
Historical Volatility: The speed or rate of change
in an asset's price movement
over a
period of time.
It should be noted that although COFI generally follows trends
in market rates, it can move
in an opposite direction
over the near term (one of these
periods is marked on the
historical graph above).
Since Schwab's fundamentally - indexed mutual funds have been
in existence for
over six years now, and that
period spanned a significant market downturn, it is worthwhile to take a look at their
historical risk - adjusted performance, as measured by the trailing five - year Sharpe Ratio (all data from Morningstar):
In the 2012 Vanguard study, «Dollar - cost averaging just means taking risk later,» the authors looked at historical monthly returns for $ 1 million invested as a lump sum and through dollar - cost averaging over periods as short as 6 months and as long as 36 months, assuming that funds were kept in cash before being investe
In the 2012 Vanguard study, «Dollar - cost averaging just means taking risk later,» the authors looked at
historical monthly returns for $ 1 million invested as a lump sum and through dollar - cost averaging
over periods as short as 6 months and as long as 36 months, assuming that funds were kept
in cash before being investe
in cash before being invested.
Over this same
period of time, prices for salt
in the U.S. have increased at an
historical average of 3 % per year.
One
historical record of the impact of taxes on returns
in Australia is the annual Russell Investments / Australian Securities Exchange (ASX) Long - term Investing Report, which measures pre - and post-tax returns for various asset classes
over 20 - year
periods.
In order to answer this question, I then performed exactly the same historical performance analyses to the ones described above, with the exception that instead of using the Vanguard Long - Term Treasury Fund for the fixed income portion of my portfolio, I employed the Vanguard Short - Term Federal Fund (ticker symbol: VSGBX), which exhibited a much more conservative increase in price over the 20 year period in questio
In order to answer this question, I then performed exactly the same
historical performance analyses to the ones described above, with the exception that instead of using the Vanguard Long - Term Treasury Fund for the fixed income portion of my portfolio, I employed the Vanguard Short - Term Federal Fund (ticker symbol: VSGBX), which exhibited a much more conservative increase
in price over the 20 year period in questio
in price
over the 20 year
period in questio
in question.
What is less appreciated is that it would have also indicated a fully unhedged position with - a few percent of assets
in call options to provide leverage -
in over 50 % of
historical periods since 1940.
Believers
in fundamental indices point out that repeated research by Kenneth French from Dartmouth's Tuck School and the University of Chicago's Eugene Fama has shown that small cap and value stocks have outperformed other securities
over most significant
historical periods, and haven't yet displayed a reversion to the mean.
The backtesting feature provides a hypothetical calculation of how a security or portfolio of securities would perform
over a
historical time
period according to the criteria
in the example trading strategy.
Take on the role of a warrior summoned by a shrine princess, and fight
over various
historical periods in order to defeat the dark monarch.
Over that time
period she has had more than fifteen solo exhibitions at Farleigh Dickenson and Columbia University's Teacher's College, Mehu Gallery
in Manhattan, the James E Lewis Museum at Morgan State University, the Barbados Museum and
Historical Society and others.
Made
over a
period of six years, the series brackets a
historical period that saw the much debated Culture Wars and the de-funding of the National Endowment of the Arts, the fall of the Soviet Union and the end of the Cold War, and perhaps most significantly the death of nearly 350,000 Americans to AIDS - related causes prior to the development of an effective combination of antiretroviral medications
in 1996.
In 1980 the museum was entrusted with the care of a collection of
historical artifacts acquired
over a three - year
period by the Junior League of Abilene.
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»).
Some people looked at parts of that work (for example, the lower right panel of Figure 1) and point out how the climate model oceans show a smooth and pretty much unbroken increase
in heat content
over the
historical period.
In your case, the ice cores must be wrong, in my case, there is no problem with ice core CO2 (neither with historical CO2 levels over the oceans), as the 0.3 K temperature increase in the period 1900 - 1950 causes an increase of about 0.9 ppmv CO2, which is within the accuracy of the ice core measurements, the rest of the observed increase is due to human emission
In your case, the ice cores must be wrong,
in my case, there is no problem with ice core CO2 (neither with historical CO2 levels over the oceans), as the 0.3 K temperature increase in the period 1900 - 1950 causes an increase of about 0.9 ppmv CO2, which is within the accuracy of the ice core measurements, the rest of the observed increase is due to human emission
in my case, there is no problem with ice core CO2 (neither with
historical CO2 levels
over the oceans), as the 0.3 K temperature increase
in the period 1900 - 1950 causes an increase of about 0.9 ppmv CO2, which is within the accuracy of the ice core measurements, the rest of the observed increase is due to human emission
in the
period 1900 - 1950 causes an increase of about 0.9 ppmv CO2, which is within the accuracy of the ice core measurements, the rest of the observed increase is due to human emissions.
GOAL 1: Examine the
historical evolution of the arctic ice - ocean system from 1948 to 2003 to understand the large - scale changes that have occurred
in sea ice and the upper Arctic Ocean
over this time
period.
«It should be borne
in mind that internal ocean oscillations substantially modulate the solar induced effects by inducing a similar atmospheric response but from the bottom up (and primarily from the equator) sometimes offsetting and sometimes compounding the top down (and primarily from the poles) solar effects but
over multi-decadal
periods of time the solar influence becomes clear enough
in the
historical records.
In summary, our results show that in the CESM - LE, the range of uncertainty in projected NAO trends and associated influences on SAT and P over the next 30 years can be obtained to a large degree from the Gaussian statistics of NAO variability during the historical period, with some regional exceptions possibly associated with AMOC variabilit
In summary, our results show that
in the CESM - LE, the range of uncertainty in projected NAO trends and associated influences on SAT and P over the next 30 years can be obtained to a large degree from the Gaussian statistics of NAO variability during the historical period, with some regional exceptions possibly associated with AMOC variabilit
in the CESM - LE, the range of uncertainty
in projected NAO trends and associated influences on SAT and P over the next 30 years can be obtained to a large degree from the Gaussian statistics of NAO variability during the historical period, with some regional exceptions possibly associated with AMOC variabilit
in projected NAO trends and associated influences on SAT and P
over the next 30 years can be obtained to a large degree from the Gaussian statistics of NAO variability during the
historical period, with some regional exceptions possibly associated with AMOC variability.
And, you can see by looking at slopes
over other
historical time
periods during the last 40 years that the slopes can vary significantly
over such time
periods because, as I explained above, the slope is a very noisy metric
in a system with noise except if you look
over large enough time
periods that the trend dominates the noise.
The prediction is initialised with the mean of the observed sea ice extent for September 2009 - 2013 and an ensemble prediction is created simply by adding all of the observed changes
in the sea ice extent record from one September to the next
over the
historical period 1979 - 2013.
And of course, there is the Vostok data, which shows the
historical warming and cooling behavior
in a single location but
over 100 year
periods.
In the analysis of observed phenomena, the validity of a conjecture can be tested
over «a longer
period of time by using
historical data, including (with cognizance of the limits of accuracy) proxy assessment methods.
As sea ice declines, it becomes thinner, with less ice build - up
over multiple years, and therefore more vulnerable to further melting.15 Models that best match
historical trends project northern waters that are virtually ice - free by late summer by the 2030s.25, 26,12 Within the general downward trend
in sea ice, there will be time
periods with both rapid ice loss and temporary recovery, 27 making it challenging to predict short - term changes
in ice conditions.
an analysis of the full suite of CMIP5
historical simulations (augmented for the
period 2006 - 2012 by RCP4.5 simulations, Section 9.3.2) reveals that 111 out of 114 realisations show a GMST trend
over 1998 - 2012 that is higher than the entire HadCRUT4 trend ensemble... During the 15 - year
period beginning
in 1998, the ensemble of HadCRUT4 GMST trends lies below almost all model - simulated trends whereas during the 15 - year
period ending
in 1998, it lies above 93 out of 114 modelled trends.
It follows that the real effect of masking to HadCRUT4 coverage
over the
historical period is,
in the southern extra-tropics, almost certainly the opposite of that simulated by CMIP5 models.