This is the limit at which twilight illumination is sufficient, under good weather conditions, for terrestrial objects to be clearly distinguished; at the beginning of morning civil twilight, or end of evening civil twilight, the horizon is clearly defined and the brightest stars are visible under
good atmospheric conditions in the absence of moonlight or other illumination.
«We had to use the best telescope in the world under
the best atmospheric conditions, and we had to set up the proper team — but most of all this measurement was really challenging because of the faintness of the source.»
Mauna Kea has some of
the best atmospheric conditions in the world to build a proposed Thirty Meter Telescope, but a desert mountain in Chile is also in competition for the $ 1 billion facility,...
Not exact matches
He started trying to figure out why crystals grow into such dramatically different shapes in different
atmospheric conditions, and,
well, «It just sort of snowballed, you could say.»
Improved competencies on
atmospheric flow, together with the guidelines and
best practices for the use of data, promises to become a key tool with reduced overall uncertainties for determining wind
conditions.
Using sophisticated
atmospheric and climate models, the researchers estimated the levels of PM2.5 directly attributable to wildfires during a recent six - year period, 2004 to 2009, as
well as under projected future climate change
conditions (2046 - 2051).
They used the Community Earth System Model, funded primarily by the Department of Energy and NSF, to simulate global climate as
well as
atmospheric chemistry
conditions.
ARM data are currently collected from three
atmospheric observatories — Southern Great Plains, North Slope of Alaska, and Eastern North Atlantic — which represent the broad range of climate
conditions around the world, as
well as from the three ARM mobile facilities and ARM aerial facilities.
Many simulations have been run in an attempt to model the complexities of the
atmospheric conditions in this situation and most outcomes aren't
good.
In theory, early mornings are far from ideal in terms of track
conditions but the
atmospheric pressure at that time of day is conducive to getting the
best possible performance out of the engine.
Ideally there is enough time and distance as
well as
atmospheric and road
conditions to allow a reasonable feel for the vehicle allowing the reviewer to describe what the consumer may expect.
Sachs's studio team of «astronauts» harvested «Mars rocks,» which were then painstakingly named, measured, and recorded; these appear in Mars Rocks (2016), as
well as Vaguum (2012) and Nevada (2008 - 2009) where transparent vacuum chambers suggest the
atmospheric conditions of Mars.
was originally polished with shellac and remains in
good condition apart from some fine surface cracking; these cracks temporarily developed an unidentified fungal growth when the piece was shown in 1993 under changed
atmospheric conditions (Tate Gallery Conservation Files).
Seated Figure was originally polished with shellac and remains in
good condition apart from some fine surface cracking; these cracks temporarily developed an unidentified fungal growth when the piece was shown in 1993 under changed
atmospheric conditions (Tate Gallery Conservation Files).
The advantage of such partially - coupled models is that they can be driven by past
atmospheric conditions and the simulations match
well the observed sea ice variability, which is strongly forced by the atmosphere.
However, it is possible to use a GCM to derive some information about the local climate through downscaling, as it is affected by both the local geography (a more or less given constant) as
well as the large - scale
atmospheric conditions.
There's a more serious consequence of being right for the wrong reasons: If there is a massive drop to
well under 1M km ^ 2 and you interpret this as evidence of a tipping point, whereas what happened was a succession of 2007 - like
atmospheric set ups, any prognosication will be shown wrong when in the following years the ice grows back and the
condition doesn't maintain itself.
John Carter August 8, 2014 at 12:58 am chooses to state his position on the greenhouse effect in the following 134 word sentence: «But given the [1] basics of the greenhouse effect, the fact that with just a very small percentage of greenhouse gas molecules in the air this effect keeps the earth about 55 - 60 degrees warmer than it would otherwise be, and the fact that through easily recognizable if [2] inadvertent growing patterns we have at this point probably at least [3] doubled the total collective amount in heat absorption and re-radiation capacity of long lived
atmospheric greenhouse gases (nearly doubling total that of the [4] leading one, carbon dioxide, in the modern era), to [5] levels not collectively seen on earth in several million years — levels that
well predated the present ice age and extensive earth surface ice
conditions — it goes [6] against basic physics and basic geologic science to not be «predisposed» to the idea that this would ultimately impact climate.»
Data will be analyzed to determine, where possible, baseline
conditions to which changes in
atmospheric deposition as
well as chemical and biological changes can be detected and explained.
I agree that this knowledge has been used in greenouses where all other
conditions are also optimised, but did you not read that in the real world increased
atmospheric CO2 produced
better results especially where the other
conditions were unfavourable?
Pre-season and summer sea ice
conditions as
well as the spring and summer
atmospheric circulation are reviewed in the pan-arctic post-season report.
How about «I took a
well - known result of
atmospheric dynamics, driven by non-equilibrium differential heating caused by the GHG GHE and claimed that it is a static feature of an adiabatically isolated atmosphere, ignoring the fact that the proposed thermal profile violates the second law of thermodynamics for the specific
conditions of long relaxation times and equilibrium
conditions I propose».
In addition, as land surface heterogeneity is a crucial part in high - resolution modeling especially with respect to land surface changes, we want to dedicate a larger part of the input data session to efforts of generating high - resolution land surface data sets (and time series of these) applicable as lower boundary
conditions in
atmospheric reanalysis systems as
well as in coupled reanalysis approaches.
«Yet, they know very
well that there is not one «global» climate, but a large variety of climates, depending on latitude, geographic
conditions, and
atmospheric dynamics.»
Then you face a choice of doing this with fixed present - day
conditions - where you have the
best available observations of clouds,
atmospheric circulation, etc - or with fixed
conditions at 1860 - where most of the observations are missing.
First, there is the «true» OLR, which can be measured from space or calculated for observed or specified
atmospheric conditions (temperature profile,
well - mixed GHG mixing ratios, humidity profile).
All of these studies, as
well as our more recent ones, include the moderating effect of
atmospheric stabilization aloft under high CO2
conditions, rather than simply increasing the sea surface temperature alone.