Climate
changes observed over recent decades are inconsistent with trends caused by natural forces but are totally consistent with the increase in human -... Learn More >>
The modelers got a good match to maps of the climate
changes observed over the past century, but only if they included the effects of the gases, and not if they tried to attribute it all to the Sun.
The changes observed over the last several decades are likely mostly due to human activities, but we can not rule out that some significant part of these changes is also a reflection of natural variability.
Developing metrics to set short - term
changes observed over decades or centuries in the context of long - term (several hundreds to thousands of years or more) variation in specific ecosystems
This requires comparing
changes observed over decades and centuries to long - term ecological baselines of change interpreted from relevant prehistoric records — much as the climate community has done with comparing recent changes with prehistoric proxy data (Barnosky et al., 2012; Hadly and Barnosky, 2009).
A: Climate
changes observed over recent decades are inconsistent with trends caused by natural forces but are totally consistent with the increase in human - induced heat - trapping gases.
When an EPA draft quoted the National Academy of Science conclusion that
the changes observed over the last several decades are likely mostly due to human activities, CEQ objected because the above quotes are unnecessary and extremely harmful to the legal case being made.
Contours show spatial and spectral
changes observed over 4 years time as shocks expand into interstellar gas and dust (more at CXC).
A: Climate
changes observed over recent decades are inconsistent with trends caused by natural forces but are totally consistent with the increase in human - induced heat - trapping gases.
The lesson here is that
changes observed over very short time intervals do not provide a reliable picture of how the climate is changing.
Humanity is the major influence on the global climate
change observed over the past 50 years.
My opinion expressed elsewhere is that almost all the temperature
changes we observe over periods of less than a century are caused by cyclical changes in the rate of energy emission from the oceans with the solar effect only providing a slow background trend of warming or cooling for several centuries at a time.
Extending the sea level record back over the entire century suggests that the high variability in the rates of sea level
change observed over the past 20 years were not particularly unusual.
Human activities that release carbon dioxide and other greenhouse gases into the atmosphere are largely responsible for the climate
change observed over the last century.
In contrast to the above, it is entirely possible that much, perhaps most, of the climate
change observed over the last century or so is natural.
Not exact matches
After
observing dozens of board meetings
over the last fifteen years and interviewing hundreds of directors, the dialogue and behavior
changes with women in boardrooms.
In recent months, I've emphasized that despite prospects for a prolonged recession which I would expect to keep the stock market in a very wide trading range (probably for the bulk of 2009), long - term investors should not overlook the sea -
change in valuations and security durations we've
observed over the past 15 months.
Median home price
change expectations decreased from 3.3 % in August to 3.1 %, remaining within the narrow 3.0 % to 3.3 % band
observed over the last 12 months, and staying well below the readings in the previous two years.
By
observing the movement in traditional metrics
over time, we have also examined how the use of a variety of other non-traditional metrics have
changed over the same period.
Evolution is simply the
observed changes in species
over time as they adapt and improve to survive.
The document criticizes «doctrinal or disciplinary security,» «an obsession with the law,» «punctilious concern for... doctrine,» «dogmatism,» «hiding behind rules and regulations,» and «a rigid resistance to
change,» while reprimanding those who «give excessive importance to certain rules,» overemphasize «ecclesial rules,» believe that «doctrine... is a closed system,» «feel superior to others because they
observe certain rules,» have «an answer for every question,» wish to «exercise a strict supervision
over others» lives,» «long for a monolithic body of doctrine guarded by all and leaving no room for nuance,» believe that «we give glory to God... simply by following certain ethical norms,» and «look down on others like heartless judges, lording it
over them and always trying to teach them lessons.»
Over the years, I have
observed the bulk of the Evangelical fleet drift — and then in desperation for some greater motivation,
change fuels — from the open - arms gasoline of evangelism meetings, to the super-sparks of charismatic gifts, to the sluggish - diesel of homogenized Biblical theology, to the stuttering - and - sparkle fuel of Christian music, to the nitro - flamed - fuel of hating gays, and now to the turbo - charged hatred of illegal aliens at home and Muslims overseas.
During the debate
over «biblical inerrancy» that raged among evangelicalism for several years in the late 1970s, I remember someone
observing that Harold Lindsell's 1976 book, The Battle for the Bible, which pretty much got that debate going, was more a theory of institutional
change than it was about theology as such.
The
changes are extremely gradual, they can not be
observed over the short time span of human civilization so far, and the term «species» is a man - made concept to make categorization of life forms convenient... it is not an immutable feature of the natural world as you seem to think it is.
Many of my beliefs have
changed over the years by simply learning more,
observing more, listening more... nothing traumatic caused these
changes.
For them microevolution is the
change we have
observed over just the short span of a human lifetime or within a few centuries.
Gave, Just
observing nature it is obvious it evolved /
changed over time.
The notion that purely random mutation preserved in the population by natural selection would produce a gradual
change, which
over time would create the complexity of life we now
observe (phyletic gradualism).
This kind of fasting does not mean ignoring hunger pains or cravings but listening carefully to them,
observing how they
change over time, looking at the relationship of mind and body in the experience of hunger and in the experience of food.
And let's remember that evolution, while it's a theory, is a theory about the beginning and the transformation of life based on things we have
observed, namely that cells
change and mutate and that those mutations can produce cells that are unique and new, and that it would follow that it's possible for molecules to form into single - celled organisms which mutate and combine into multi-cellular organisms which mutate, adapt, and grow
over time into new forms of life.
«The city of Cleveland and the entire market has been
changing over the last two years,» he
observes.
The approach of Denny's corporate leaders to franchisees has
changed over recent years, Lafreeda
observes.
Many
changes observed in the environment are long term, occurring slowly
over time.
For
over 25 years, Mass Audubon has analyzed the land use
changes in Massachusetts and
observed how the landscape has been transformed by new residential and commercial development in our Losing Ground report.
The increased socioeconomic inequalities in breastfeeding
observed in the intervention group supports the argument that population intervention strategies could inadvertently exacerbate, rather than mitigate, socioeconomic inequalities, particularly when the intervention aims to
change individual behaviours rather than targeting «upstream» structural
changes.25 Our results are also compatible with an observational study from Brazil reporting that breastfeeding rates increased first among the socioeconomically better - off, followed by increases among the poor,
over a 20 - year period of active breastfeeding promotion campaigns in Brazil.26
Attempts to explain the increase in PPH rates by taking into account
changes in the
observed risk factors for PPH
over time can not explain the rise in rates [5, 6].
What has been called the modern synthesis of the two fields emerged in the 1940s with the idea that the sorts of genetic differences you could
observe in populations, right out your window, when compounded and extrapolated
over vast periods of time, could account for the large - scale
changes we see in the fossil record.
By
observing lizards in the field, Sinervo and a colleague showed that the number of lizards employing the strategies of aggression, cooperation, and deception fluctuated
over the course of 6 years, the dominant strategy
changing as new lizards were born.
Using Spitzer, scientists monitored brightness
changes in six brown dwarfs
over more than a year,
observing each of them rotate 32 times.
In particular, the modelers could now reproduce in detail the pattern of warming,
changes in rainfall, etc. actually
observed in different regions of the world
over the past century.
Even more significantly, the
observed changes in the amount of carbon
over time don't fit the volcanic model.
Given widespread observation of habitat
change and individual species declines — and knowing that extinction rates are many times higher than normal — the scientists predicted a drop,
over time, in the number of species
observed in most of these studies.
► In this week's Science Careers - produced Working Life column Mildred Dresselhaus, an 83 - year - old physicist at MIT, reflects on gender inequality in science, including
changes she has
observed over the years and the work that still needs to be done.
«Our timing was serendipitous, as it meant we were able to see
changes in microbial processes
over an extremely fast melting season and
observe a process from start to end across all habitats on a glacier surface.
Their model is the first to accurately anticipate
observed changes in onshore and offshore sandbar movements, and it did so successfully
over 45 days.
A few of the main points of the third assessment report issued in 2001 include: An increasing body of observations gives a collective picture of a warming world and other
changes in the climate system; emissions of greenhouse gases and aerosols due to human activities continue to alter the atmosphere in ways that are expected to affect the climate; confidence in the ability of models to project future climate has increased; and there is new and stronger evidence that most of the warming
observed over the last 50 years is attributable to human activities.
That may
change within 10 years or so, when astronomers hope to succeed in hooking up telescopes from all
over the world that
observe the universe at wavelengths shorter than 1 millimeter.
The researchers then
observed how the frequency of resistance genes
changed over six generations of mosquitoes — a process, biologists refer to as «microevolution.»
If so,
observing Pluto will help explain how the chemistry of planets
changes over time — and in particular, how Earth developed a composition that is friendly to life.
«What we're seeing is a star that is the cosmic equivalent of «Dr. Jekyll and Mr. Hyde,» with the ability to
change from one form to its more intense counterpart with startling speed,» said Scott Ransom, an astronomer at the National Radio Astronomy Observatory (NRAO) in Charlottesville, Va. «Though we have known that X-ray binaries — some of which are
observed as X-ray pulsars — can evolve
over millions of years to become rapidly spinning radio pulsars, we were surprised to find one that seemed to swing so quickly between the two.»