Precipitable Water Anoms

[MWatkins]

Does anyone have a good link for...

1. Current and or historical daily, weekly or monthly Precipitable Water anoms for the Northern Hemisphere or better yet the North Atlantic

2. GFS model forecasts for Precipitable Water

I have a theory that pwats have been running below normal this month and perhaps in the last 2 as well, which could be a reason that we have not had much TC activity despite the boiling Atlantic SST's.

Also, I am seeing anoms flip to the positive side in the far eastern Atlantic...if this area expands westward over the next week...I would expect to see TC activity to jump as well.

Any help would be much appreciated. I promise to write up whatever I find...

MW

[AJC3]

Does anyone have a good link for...

1. Current and or historical daily, weekly or monthly Precipitable Water anoms for the Northern Hemisphere or better yet the North Atlantic

2. GFS model forecasts for Precipitable Water

I have a theory that pwats have been running below normal this month and perhaps in the last 2 as well, which could be a reason that we have not had much TC activity despite the boiling Atlantic SST's.

Also, I am seeing anoms flip to the positive side in the far eastern Atlantic...if this area expands westward over the next week...I would expect to see TC activity to jump as well.

Any help would be much appreciated. I promise to write up whatever I find...

MW

Mike,

I know this isn't exactly the area you want, but have you seen this map where you can get PWAT climatology (max/min, percentiles, and a +2SD curve)? If anything, it'll be good for some background info for CONUS RAOB sites.

http://www.crh.noaa.gov/unr/?n=pw

Tony

[MWatkins]

Thanks Tony! I will start playing with this today!

MW

[supercane]

You could try to load the individual images from the CIMSS site and extract the raster data to get your total precipitable water.

Link to site: http://cimss.ssec.wisc.edu/tropic/real-time/tpw2/natl/main.html
Link to ftp archive (has images for the calendar year): ftp://ftp.ssec.wisc.edu/pub/mimic_tpw/images/natl

Also, you could load in individual model runs and extract the PW fields from them.

Unfortunately these would not be anomalies but together with above info may be able to do some analysis.

Good luck!