April 24, 2008

AMS Tropical Conference Talk

Here is a NAME-related talk I will give at next week's AMS conference on tropical meteorology.

Tropical conference presentation

Posted by Timothy at 09:03 AM

February 11, 2008

TRMM Conference Poster

Here is a poster presented at the recent TRMM conference in Las Vegas. I contributed the NAME ground radar analysis.

TRMM Conference Poster

Posted by Timothy at 09:40 AM

January 28, 2008

Statisical Framework Presentation

Here is a presentation I made on our research into the creation of a framework for the statistical analysis of large radar and lightning datasets, recently presented at the AMS annual meeting in New Orleans.

Statistical Framework Presentation

Posted by Timothy at 10:32 AM

November 13, 2007

20 June 2007 Bow Echo Radar Mosaics

I created 3-D mosaics of radar data from 4 NEXRAD radars in Oklahoma, for analysis of a bow echo MCS that occurred on 20 June 2007. The mosaics cover a period of significant sprite production by the storm. These mosaics will be analyzed in order to characterize the spatial and temporal evolution of the storm structure, which will then be compared to sprite production. I have linked below to a movie of the lowest altitude horizontal cross-sections of reflectivity in these mosaics.

Movie of radar mosaics

Posted by Timothy at 02:30 PM

Pictures from Taiwan Site Survey

Here are some pictures I took during my recent trip to Taiwan. Of particular interest will be pictures from the survey of potential S-Pol sites, which you will find about halfway through the album.

Pictures at KodakGallery.com

Posted by Timothy at 11:37 AM

November 12, 2007

S-Pol Blockage Simulations for Taiwan

Here are blockage pattern simulation results for the two proposed TiMREX S-Pol sites, Air Force Academy and Levee. AFA has less blockage overall, but Levee has a nice view up the river valley. Both blockage patterns are much worse than anything we saw in NAME. It may be difficult to perform QPE in the eastern sector, beyond about 50 km range.

AFA 0.5-deg Elevation
AFA 1.0-deg Elevation
AFA 1.5-deg Elevation
AFA 2.0-deg Elevation
AFA 2.5-deg Elevation
AFA 3.0-deg Elevation

Levee 0.5-deg Elevation
Levee 1.0-deg Elevation
Levee 1.5-deg Elevation
Levee 2.0-deg Elevation
Levee 2.5-deg Elevation
Levee 3.0-deg Elevation
Levee 3.5-deg Elevation
Levee 4.0-deg Elevation
Levee 4.5-deg Elevation

NCAR TiMREX website

Posted by Timothy at 04:43 PM

RHI Sector Gridding Test

In TiMREX, S-Pol will likely scan RHI sectors on a regular basis. I tested the feasibility of using REORDER to grid RHI sector scans, similar to how we usually do with PPI sectors. The test was successful, with the RHI sectors gridding with few artifacts. Here are some examples using CHILL data from a hailstorm on 10 May 2005.

2332 UTC RHI Sector Horizontal Cross-Section
2335 UTC PPI Sector Horizontal Cross-Section
2332 UTC RHI Sector Vertical Cross-Section
2335 UTC PPI Sector Vertical Cross-Section

Posted by Timothy at 04:34 PM

Publications updated

Please find selected new publications listed on the right side of the main page.

Posted by Timothy at 03:50 PM

Latest NAME Posters

These posters review much of my most recent NAME research.

AMS 2007 Radar Conference
Taiwan ICMCS-VI Conference

CSU Radarmet's NAME research page

Posted by Timothy at 03:47 PM

C3VP AMFR QC Reports

These reports cover the current state of the AMFR radar quality control process.

Initial AMFR QC Report - 26 June 2007
King/AMFR Intercomparison - 7 July 2007
AMFR Intercomparison Report - 25 October 2007

CSU Radarmet C3VP Research Page

Posted by Timothy at 03:35 PM