Overnight lows are a dramatic change in early summer but
with increasing humidity by late July, things moderate to just plain hot all the time.
I haven't seen the «calm night / windy night» paper but I'm a bit of a fan of worst papers; here are 2 recent contenders; the first is predicting future temp increases of 25 F
with increased humidity, the wet - bulb temperature:
Not exact matches
Studies have shown that a drop in absolute
humidity is correlated
with a significant
increase in the presence of active flu virus in aerosolized droplets.
This humidifier will help
increase humidity in nurseries or other rooms of the house for up to 24 hours, helping to soothe symptoms associated
with colds and flu.
Cui says the issue is not
with the telescope, but
with increasing dust and
humidity at the site, which now gets only 120 clear nights a year, down from more than 200 when LAMOST was being planned.
If you compared the readings of your hygrometer
with another instrument that measures
humidity, such as a psychrometer or an electric hygrometer, you may find that your hygrometer is 20 percent to 30 percent inaccurate, but you can recalibrate it using these devices to
increase its accuracy.
As
with the workout suit, the flaps on the running shoe opened and lit up when researchers
increased the surrounding
humidity; in dry conditions the flaps faded and closed.
In a piano,
increases in
humidity and temperature cause the bushings (hinges in the mechanical assembly of the piano action around which one component rotates
with respect to another) to swell.
Surface specific
humidity has generally
increased after 1976 in close association
with higher temperatures over both land and ocean.
Chemist Satish Nune was inspecting the solid, carbon - rich nanorods
with a vapor analysis instrument when he noticed the nanorods mysteriously lost weight as
humidity increased.
Total column water vapour has
increased over the global oceans by 1.2 ± 0.3 % per decade from 1988 to 2004, consistent in pattern and amount
with changes in SST and a fairly constant relative
humidity.
... or is any AO / NAM trend driven partly by changes in storm track positions themselves being forced by other changes besides specifically AO / NAM (reduced static stability at higher latitudes, reduced lower tropospheric temp gradient,
increased gradient in upper troposphere and lower stratosphere,
increased humidity, variations in all those
with latitude and longitude...)??
In the central United States, for example, observational data indicate that rainfall
increased, surface air temperature decreased, and surface
humidity increased during the summer over the course of the 20th century concurrently
with increases in both agricultural production and global GHG emissions.
Topography can also influence fire behavior by determining local microclimates — for example, variations in local snowpack, temperature, and
humidity (Holden and Jolly 2011)-- or alignment
with prevailing winds (Sharples 2009) which
increase fire spread.
Results of both regional climate model simulations and observational analyses suggest that much of the observed rainfall
increase — as well as the decrease in temperature and
increase in
humidity — is attributable to agricultural intensification in the central United States,
with natural variability and GHG emissions playing secondary roles.
Global temperatures have
increased by ∼ 0.2 °C per decade over the last three decades16, possibly leading to an acceleration of the global water cycle
with more intense rainfall events17, more severe and widespread droughts18 (despite drought frequencies appearing unchanged19) and regional
humidity variations20.
The study, which controlled for levels of pollutants and allergens in the air (which are affected by weather), found that a 10 - degree
increase in temperature and a 10 % change in
humidity were associated
with a slight uptick in asthma - related emergency room visits.
However, one study conducted in Detroit found that when there was a rapid 10 - degree rise in temperature or a 10 % rise in
humidity — as can happen in spring and summer — hospitalizations for children
with asthma
increased in the next day or two.
People
with hip osteoarthritis reported
increased pain and stiffness when
humidity and barometric pressure rose, according to 2014 Dutch research.
Combine that
with the fact that many chemicals are absorbed through the skin, and that higher temperatures and
humidity may
increase absorption, 2 and you may think twice about the chemical - laden products lining the perimeters of your tub or shower.
This high
humidity, coupled
with the
increased temperatures of the surroundings would make yoga practitioners sweat like crazy, and
with increased sweating, several advantages compared to conventional, room - temperature yoga are associated.
With the
humidity steadily
increasing, I grabbed a strawberry lemonade on the way out to stay cool for the rest of the afternoon.
Humidity: Pet birds can adapt to a wide range of humidity levels, although birds native to subtropical climates may benefit from localized increased humidity in the home (e.g., in the bathroom with running shower or frequent spraying of the feathers with
Humidity: Pet birds can adapt to a wide range of
humidity levels, although birds native to subtropical climates may benefit from localized increased humidity in the home (e.g., in the bathroom with running shower or frequent spraying of the feathers with
humidity levels, although birds native to subtropical climates may benefit from localized
increased humidity in the home (e.g., in the bathroom with running shower or frequent spraying of the feathers with
humidity in the home (e.g., in the bathroom
with running shower or frequent spraying of the feathers
with water).
Cats do not appear to be affected by conformational differences of the pinnae, as seen
with the Scottish fold.3 Excessive hair in the canal, as seen in poodles and schnauzers, can also decrease ventilation and form hair mats that retain debris and create obstructions.7 Shar - peis have stenotic canals that may be predisposed to higher
humidity levels and secretions, leading to overgrowth of normal microbial inhabitants.1, 7 An
increase in glandular tissue can lead to an
increase in cerumen production and debris accumulation, which seems to be more common in cocker spaniels, springer spaniels, and Labrador retrievers.1, 7
In general, the risk of aerosol transmission
increases with proximity and duration of exposure to the source; however, once aerosolized, certain pathogens may remain infective over long distances, depending on particle size, the nature of the pathogen, and such environmental factors as temperature and
humidity.3
The exception to the norm of relatively cool temperatures and high
humidities occurs occasionally in the fall
with Santa Ana wind conditions when temperatures dramatically
increase and
humidities decrease.
Darwin's wet season lasts from November until April and while it may make some tourist activities less appealing due to the
humidity and
increased rainfall, the region comes alive
with spectacular waterfalls and lush green rainforest.
Global climate change risks are high to very high
with global mean temperature
increase of 4 °C or more above preindustrial levels in all reasons for concern (Assessment Box SPM.1), and include severe and widespread impacts on unique and threatened systems, substantial species extinction, large risks to global and regional food security, and the combination of high temperature and
humidity compromising normal human activities, including growing food or working outdoors in some areas for parts of the year (high confidence).
Now since relative
humidity remains roughly constant at the ocean surface and the air's capacity to hold water
increases with temperature, relative
humidity will actually decrease over land, particularly as one enters the continental interiors.
Taking the slow
increase of precipitation
with temperature as a given, the more rapid
increase of boundary layer
humidity implies that the rate of transport of moisture from the boundary layer to higher levels where it rains out must go down.
The water vapor feedback (a generally positive feedback)-- there is an roughly exponential
increase in saturation water vapor pressure
with increasing temperature, and the relative
humidity (at a given vertical level) overall tends not to change a lot globally, though there will be different regional trends associated
with shifting precipitation patterns.
The observed regional changes are consistent in pattern and amount
with the changes in SST and the assumption of a near - constant relative
humidity increase in water vapour mixing ratio.
Short - term observations by Minschwaner + Dessler (2004) showed that SH
increased with warming, but only at less than one - fourth the amount required to maintain fixed relative
humidity.
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.
Heat stress is projected to
increase as a result of both
increased summer temperatures and
humidity.55, 61 One study projected an
increase of between 166 and 2,217 excess deaths per year from heat wave - related mortality in Chicago alone by 2081 - 2100.62 The lower number assumes a climate scenario
with significant reductions in emissions of greenhouse gases (B1), while the upper number assumes a scenario under which emissions continue to
increase (A2).
Basically Miskolczi has looked at the thermodynamics of water vapor and CO2 and found that they interact such that, as CO2 rises, absolute
humidity decreases, creating a relatively constant heat - trapping effect, if not a decreased effect
with an
increasing proportion of CO2.
In the absence of concerted efforts to reduce the threats posed by heat waves,
increased humidity, degraded air quality and degraded water quality, climate change will
increase the health risks associated
with these phenomena.
Guess what
increased precipitation and
humidity brings
with it?
Yet on a short term basis
humidity seemd to
increase with temperature, as the many «blips» in the two curves show.
Wind gusts of more than 37 miles (60 kilometers) per hour, which swept the dust into Sidney, joined
with high temperatures and low
humidity to
increase the risk of fire in the city and its surroundings.11
An
increased greenhouse effect due to
humidity, CO2, aerosols or clouds is expected to produce a relative
increase of the minima
with respect to the maxima and a decrease of the diurnal range.
Evaporation
increases with rising surface temperature, decreasing relative
humidity, and
increasing surface wind speed.
This snowpack accumulation near the poles, which gets its water via the Arctic and Antarctic oceans, that in turn rob it from equatorial latitudes of our oceans, also results in a reduction in the earth's spin axis moment of inertia and causes the spin rate to
increase as evidenced in the recent history of the rate at which Leap Seconds are added to our calendar (see Wysmuller's Toucan Equation for more on this evidence that during this warm time
with much greater polar
humidity, earlier seasonal, later seasonal and heavier snows are beginning to move water vapor from the oceans to the poles to re-build the polar ice caps and lead us into a global cooling, while man - made CO2 continues to
increase http://www.colderside.com/faq.htm).
With wNA forest loss, there are significant declines in both precipitation and temperature during the early growing season, however it is the change in the relative
humidity that dominates the observed
increase in VPD.
But, just in case you were semi-serious:
With oceans covering 70 % of the earth's surface, you could never change atmospheric
humidity — water vapor pressure is a function of atmospheric temperature,
increasing as temperature rises.
Temperatures are continuing to rise
with consequent
increases in evaporation and atmospheric
humidity and reductions in snow amount and snow season length in many regions.
Another paper discusses how atmospheric
humidity increased during the recent period of pronounced global warming (from about the late 1970s to the present),
with a
humidity decrease during the cooling / temperature stagnation period of ~ 1940s to the 1970s:
Fires are heavily controlled by regional weather, erupting
with a sudden
increase in winds, plunging relative
humidity or soaring temperatures.
So, has relative
humidity been falling
with increasing CO2 concentrations?
A quick look at absolute
humidity rising
with an average RH being constant, one has for 5 deg C, only a 30 %
increase in h2o vapor.