This July, the record heat was also pushed by
warm nighttime temperatures — the overnight lows weren't that low.»
And while that high ranking was fueled in part by a major heat wave out West, a big factor was the very
warm nighttime temperatures across a large swath of the country.
But 93 weather stations have seen their all - time
warmest nighttime temperatures, Arndt said.
Would
warmed nighttime temperatures allow them to plant the crop earlier in the season?
Not exact matches
It was minimum, or
nighttime,
temperatures that were particularly
warm for June, hitting an average of 1.7 °F above the 20th century average of 55.7 °F.
Notice that there is a significant amount of variation between months, but that
warm temperature records, and especially record high
nighttime temperatures, outnumber the cold
temperature records.
Warming has occurred in both land and ocean domains, and in both sea surface
temperature (SST) and
nighttime marine air
temperature over the oceans.
Figure 3 - Schematic showing the upper ocean
temperature profiles during the (A)
nighttime or well mixed daytime and (B) daytime during conditions conducive to the formation of a diurnal
warm layer.
Now gracing the orangerie, the containerized echium will live outdoors once
nighttime temperatures warm to above 28 degrees.
Natural Light adjusts the screen's color
temperature, from a cool, white spectrum during the day to a
warmer, candlelight - like hue for
nighttime reading.
Remember to bring
warm clothes for December and January, when
nighttime temperatures to drop to single digits.
The average mean
temperature in January ranges from 53 - 59 degrees F; summers are a little
warmer with an average mean
temperature in July that ranges from 62 - 70 degrees F. Both winter and summer
temperature extremes are moderated by the moist ocean air with generally high
nighttime humidities and frequent fog.
Scientists sifting for trends in record high and low
temperatures across the United States have found more evidence of long - term
warming of the climate, with the biggest shift coming through a reduction in record low
nighttime temperatures.
Global climate models have successfully predicted the rise in
temperature as greenhouse gases increased, the cooling of the stratosphere as the troposphere
warmed, polar amplification due the ice - albedo effect and other effects, greater increase in
nighttime than in daytime
temperatures, and the magnitude and duration of the cooling from the eruption of Mount Pinatubo.
Regional Spectral Model produced
warmer nighttime minimum
temperature in the summer (HK1) but three other models did not show clear signals.
As estimated from this study, we found a conservative estimate of a
warm bias resulting from measuring the
temperature near the ground at just one level of around 0.21 °C per decade (with the
nighttime minimum
temperature contributing a large part of this bias).
These issues, which are either not recognized at all in the assessments or are understated, include: - the identification of a
warm bias in
nighttime minimum
temperatures - poor siting of the instrumentation to measure
temperatures - the influence of trends in surface air water vapor content on
temperature trends - the quantification of uncertainties in the homogenization of surface
temperature data, and the influence of land use / land cover change on surface
temperature trends.
One study found that
nighttime low
temperatures are rising twice as fast as daytime high
temperatures, which is specifically a signature of greenhouse
warming.
What this means is that because (a) the land surface
temperature record does in fact combine
temperature measurements of light wind and windy nights and (b) there has been a reduction in
nighttime cooling, the long - term
temperature record may be contaminated by a
warm bias that accentuates the observed trend of
warmer temperatures.
Model Diagnosis of
Nighttime Minimum
Temperature Warming during Summer due to Irrigation in the California Central Valley Hideki Kanamaru and Masao Kanamitsu Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California Abstract This study examines the mechanisms of nighttime minimum temperature warming in the California Central Valley during summer due to
Temperature Warming during Summer due to Irrigation in the California Central Valley Hideki Kanamaru and Masao Kanamitsu Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California Abstract This study examines the mechanisms of nighttime minimum temperature warming in the California Central Valley during summer due to irri
Warming during Summer due to Irrigation in the California Central Valley Hideki Kanamaru and Masao Kanamitsu Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California Abstract This study examines the mechanisms of
nighttime minimum
temperature warming in the California Central Valley during summer due to
temperature warming in the California Central Valley during summer due to irri
warming in the California Central Valley during summer due to irrigation.
Contrary to conservative media's reporting, wind farms affect local
nighttime temperatures, not global
warming.
Therefore is one is using
nighttime temperatures to calculate the mean
temperature there is about a 0.03 / decade
warming bias.
* There were 21 instances of low (
nighttime)
temperatures being as
warm, or
warmer, than the existing record daytime
temperature for a given date.
If water vapor has an amplifying effect as climate modelers claim, why is the daily mean
temperature in a dry, desert area
warmer (in spite of
nighttime cooling) than a humid tropical area at the same latitude?
Looking at
temperature trends for days vs nights also suggest that there was a stronger daytime cooling during the 40's to 70's period than
nighttime which may have continued
warming.
On cold nights, turbulence stirs the lower atmosphere and keeps
nighttime temperatures around the crops
warmer, potentially warding off early fall frosts and extending the growing season.
If they are the cause of global
warming, average
nighttime temperatures should increase more than daytime ones — reducing the total daily
temperature swing.
``... most of the
warming which has occurred in these regions over the past four decades can be attributed to an increase of mean minimum (mostly
nighttime)
temperatures....
Why have
nighttime temperatures warmed faster than daytime
temperatures?
The net effects of clouds on the
nighttime minimum
temperature is small except in the winter high latitudes where the greenhouse
warming effect of clouds exceeds their solar cooling effect.
Most of the
warming we have seen over the last 50 years has manifested itself as higher
nighttime lows and higher winter
temperatures.
We can argue about daytime
temperatures but
nighttime temperatures are certainly
warmer.
Postscript: Not exactly on topic, but one thing that is never, ever mentioned in the press but is generally true about
temperature trends — almost all of the
warming we have seen is in
nighttime temperatures, rather than day time.
But remember what we discussed earlier — global
warming is expected to be seen disproportionately in
nighttime and winter
temperatures.
Warm Up with Wooden Candle Holders Soften the harsh feel of a brisk autumnal morning and shave off the far - too - crisp fall
temperature at
nighttime.