# Presentation: 118619

## December 4-5, 2007

**and**
**Remote Sensors**
- Earth Systems Research Laboratory
- Physical Science Division
- Weather and Climate Physics Branch Boulder, CO USA
*Chris Fairall, Daniel E. Wolfe, and Sergio Pezoa*

**December 4-5, 2007**

**The air-sea flux system consists of six components:**
** ****(1) A fast turbulence system with ship motion corrections mounted on the jackstaff.  The jackstaff sensors are: GILL Sonic anemometer, Fast Ozone Sensor’s inlet, LiCor LI-7500 fast CO2/hygrometer, and a Systron-Donner motion-pak.**
**(2) A mean T/RH sensor in an aspirator on the jackstaff.**
**(3) Solar and IR radiometers (Eppley pyranometers and pyrgeometers) mounted on top of a seatainer on the 02 deck.**
**(4) A near surface sea surface temperature sensor consisting of a floating thermistor deployed off port side with outrigger (Sea Snake).**
**(5) A Riegl laser rangefinder wave gauge mounted on the jackstaff.**
**(6) An optical rain gauge mounted on the jackstaff. Slow mean data (T/RH, PIR/PSP, etc) are digitized on a Campbell 23x datalogger and transmitted via a combination of RS-232 and wireless as 1-minute averages. A central data acquisition computer logs all sources of data via RS-232 digital transmission.**

## Atmospheric aerosols are measured with a Particle Measurement Systems (PMS) Lasair-II aerosol spectrometer.  The Lasair-II draws air through an intake and uses scatter of laser light from individual particles to determine the size.

**A new instrument has been added to the standard ESRL flux package. The first-ever direct eddy correlation (EC) measurements of ozone flux from the ship to help researchers understand more about the destruction of ozone at the oceans surface.**

**PSD/Flux also operates five remote systems:**
**Vaisala CL-31 cloud base ceilometer**
**Doppler C-band 5.6 GHz scanning- weather radar**
**915 MHz vertically pointed Doppler radar wind profiler**
**Tera Scan Satellite receiver (Sea Space)**

**The ceilometer is a vertically pointing lidar that determines the height of cloud bottoms from time-of-flight of the backscatter return from the cloud.  The time resolution is 30 seconds and the vertical resolution is 15 m.  **
**The Doppler C-Band radar normally operates in 2 modes. Every 10 minutes 2 tasks are scheduled: a 125 km volume scan at 11 elevation angles (0.0, 0.5, 1.0, 2.0, 3.0, 4.0, 5.0, 10, 15, 20, and 30 degrees) and a 250 km 1-degree surveillance scan. **
**The 915-MHz radar profiler radar is permanently mounted on the RHB. It continuously monitors the winds above the ship from 150 to 5000m. **
**A Tera Scan (SeaSpace) satellite receiver collects High Resolution Picture Transmission (HRPT) data from NOAA’s polar orbiting satellites (12, 14, 15, 17, 18). **

**PSD also launches weather balloons from the Ron Brown.**
**A Vaisala MW31 system, maintained by PSD and available to visiting scientists upon request, is used to collect thermodynamic and wind profiles. This system has been upgraded to handle RS92 digital GPS radiosondes and ozondesondes.**

## Slide 7

**PNE/AMMA May 2007**
**GOMEX July 2007**
**STRATUS 2007**
**GASEX 2008**
**PNE/AMMA 2008**
**VOCALS/STRATUS 2008**
_***Cruises PSD has or will participate in***_

**C-Band reflectivity Image**
**       ****NEAQS 2004**

**Tera Scan satellite**
**    ****Visible image**
**   ****STRATUS 2006**

**303-497-3253 ****chris.fairall@noaa.gov**
**303-497-6204 **** ****daniel.wolfe@noaa.gov**
**303-497-6441 ****sergio.pezoa@noaa.gov**
**ftp://ftp.etl.noaa.gov/et6/archive (Data)**
**http://www.esrl.noaa.gov/psd (Web site)**