Surface low pressure map along
with precipitable water normalized anomalies for Jan. 23, 2016, showing a corridor of moist air flowing around the East Coast blizzard.
Not exact matches
The definitive
precipitable water vapour analyses are discussed in Chapter 3 of AR4, and I'd start
with those publications and authors to see what the differences are
with the ISCCP product.
By several meteorological measures, the airmass associated
with this storm is pretty extraordinary: the amount of atmospheric water vapor (
precipitable water) expected to be present near San Francisco on Saturday morning may be close to the all - time record value for any time of year.
Here is a near real time super computer visualization of surface winds
with a total
precipitable water overlay.
Note 1 — The total amount of water vapor, TPW (total
precipitable water), is obviously something we want to know, but we don't have enough information if we don't know the distribution of this water vapor
with height.
Just to let you know how stupid the global warming activists are, I've been to the south pole 3 times and even there, where the water vapor is under 0.2 mm
precipitable, it's still the H2O that is the main concern in our field and nobody even talks about CO2 because CO2 doesn't absorb or radiate in the portion of the spectrum corresponding
with earth's surface temps of 220 to 320 K. Not at all.
It would be straightforward to test this
with modeling by calculating the pressure change over a region due to the hydrostatic pressure changes due to the removal of
precipitable water by precipitation.
The storm is passing over waters of 29 °C — approximately 0.5 °C above average in temperature — and is an unusually wet storm,
with amounts of water vapor near the very high end of what is observed in tropical cyclones (
precipitable water values up to 3.0 inches.)
As expected, amounts of
precipitable water are greatest over warm, equatorial regions and decrease more or less continuously
with increasing latitude down to very low values over the cold, polar regions.
The most recent global estimate shows an increase in
precipitable water during the period 1973 - 1990,
with the largest trends in the tropics, where increases as large as 13 % per decade were found.
By accounting for these aspects, he subtracted the median of the measurements (
precipitable water content, etc) for the corresponding calendar month for all the data, and excluded the years
with volcanic activity.
Feulner also asserts that there may be two simultaneous effects: (i) that the
precipitable water content, pyranometry and the pyrheliometry measurements exhibit pronounced regular seasonal variations, and (ii) the seasonal distribution of sunspot numbers can give the impression of a change
with solar activity.