Mark,

According to the "Site Specific Documentation" from the installation in early 1994 they 

installed a 26' (8 meter) tower. The same tower that was moved to the new 

location. The 30' on the blue print would represent the cross arm ("S"arm now with 

IFWS) and sensor.

I suppose the only real way to know is to measure it the next time someone is at the site.

Thanks,

Shane

Photo taken day of the move - 03/17/2014

On Tue, Nov 10, 2015 at 2:24 PM, DERF, MARK <MDERF@idem.in.gov> wrote:

Yes, I believe it does. There are still documents out there that suggest a lower anemometer height but we consider the 

blue prints a very reliable source to confirm the 30 foot height.

Thank you to everyone who helped on this request.

Mark Derf

Section Chief – Technical Support and Modeling

Indiana Department of Environmental Management
Office of Air Quality

100 North Senate Avenue

Indiana, IN 46206-2251

Phone 317 233-5682

Fax 317 233-2342

mderf@idem.IN.gov

From: Ricky Shanklin - NOAA Federal [mailto:ricky.shanklin@noaa.gov] 

Sent: Tuesday, November 10, 2015 3:10 PM

To: Martin Luecke - NOAA Federal

Cc: DERF, MARK; Pilar Trevino - NOAA Federal

Subject: Re: Evansville anemometer height

Thanks Shane.

Mark does this take care of your need?

Rick

On Tue, Nov 10, 2015 at 11:58 AM, Martin Luecke - NOAA Federal <martin.luecke@noaa.gov> wrote:

Rick,

This is from the EVV Airport relocation blue prints.

(EVV ASOS Relocation)

Thanks,

Shane
On Thu, Nov 5, 2015 at 5:30 PM, Rick Shanklin <ricky.shanklin@noaa.gov> wrote:

Height of the EVV ASOS anemometer?

Rick

Sent from my iPad

Begin forwarded message:
From: NWS Answers - NOAA Service Account <nws.answers@noaa.gov>

Date: October 29, 2015 at 7:03:48 AM CDT

To: "DERF, MARK" <MDERF@idem.in.gov>, Ricky Shanklin - NOAA Federal <ricky.shanklin@noaa.gov>

Subject: Re: Evansville anemometer height

Ricky,

Can you answer Mark's question below about the Evansville ASOS?

Thanks,

Melody

Melody Magnus

National Weather Service

On Wed, Oct 28, 2015 at 4:16 PM, DERF, MARK <MDERF@idem.in.gov> wrote:

I work for the Office of Air Quality and we use the meteorological data from several National Weather Service 

sites throughout Indiana and surrounding states to conduct air dispersion modeling. We are trying to determine the 

actual anemometer height at the Evansville NWS ASOS station (KEVV;72;432;EVANSVILLE 

REGIONAL;IN;United States;4;38-02N;087-32W;38-01-53N;087-32-16W;127;117;)in response to 

comments received from U.S. EPA.

We have conflicting information that says the height is either 26 feet (7.92 meters) or 33 feet (10.0 meters). We 

know the anemometer height was 33 feet before 2008 but the site has moved so we are unsure if the anemometer 

height at the new site location (which we believe moved around the 2007 or 2008 time frame, based on slightly 

different latitude and longitude coordinates) lowered to 26 feet or remained at 33 feet. This change would be mean 

that we would need to re-process our meteorological data at the lower anemometer height to establish 

representative wind profiles in order to predict modeled pollutant concentrations from companies in southwest 

Indiana.

If you could confirm the anemometer height at the Evansville NWS ASOS station and supply a reliable website or 

inventory of updated anemometer heights, that would be very helpful.

Thank you for your attention to this issue.

Mark Derf

Section Chief – Technical Support and Modeling

Indiana Department of Environmental Management

Office of Air Quality

100 North Senate Avenue

Indiana, IN 46206-2251
Phone 317 233-5682

Fax 317 233-2342

mderf@idem.IN.gov

Rick Shanklin

Warning Coordination Meteorologist

National Weather Service Paducah, KY 

270-744-6440 x726 admin

270-559-2724 mobile

ricky.shanklin@noaa.gov

http://twitter.com/NWSPaducah

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