ARMARMAtmospheric Radiation MeasurementAtmospheric Radiation Measurement

DOE’s Flagship Global Climate Change Program

ARM Climate Research Facilities in Alaska

The North Slope of Alaska Team at Sandia Labs/NM:

Bernie Zak, Jeff Zirzow, Kathy Anguiano, Jean Lewis, Mark Ivey

File.50

Improve Climate Predictions Improve Climate Predictions

Improve Global Climate Models Improve Global Climate Models

- Radiative Transfer w/Clouds- Radiative Transfer w/Clouds

- Treatment of Clouds- Treatment of Clouds

ARM Overview: Goals ARM Overview: Goals

B

AA

A

AA

Tethered Sonde

Doppler Radar

Calibrationand SupportFacility

RASSProfilingSystem

Raman Lidar

Radiation MeasurementTower

RepresentativeARM Measurements

AuxiliaryFacilities

BoundaryFacilities

A -

B -

Extended Facility

Central Facility

• Temperature• Radiative Fluxes• Wind• Greenhouse Gases• Clouds• Aerosols• Water Vapor• Vertical Velocities

BB

B

HighResolutionSpectrometer

200 x 200kmGrid

A

ARM Mobile Facility Now in the Black Forest, Germany

ARM Climate Research Facility Locations

ARM Sites Taken Together Form aNational User Facility: ARM Climate Research Facility (ACRF)

-Open to All on a Proposal Basis

-Uses Not Limited to Climate Research

-Number of Users is the Figure of Merit -No Sunset Date for ACRF

-Use Fees Limited to Additional Costs

North Slope ARM Climate Research Facility:Where Climate Change is Most Rapid

Categories of Instrumentation*-Surface Meteorological Sensors-Wind, Temperature and Humidity Profilers-Cloud Observation Instrumentation-Downwelling Radiation Sensors-Upwelling Radiation Sensors-Aerosol Instrumentation-Gas Instrumentation

*About 70 sensors in all (on the North Slope), including radars, lidars, spectrometers, imagers, etc. etc.

Selected NSA ACRF Field Experiments*

• Upcoming: Indirect and Semi-Direct Aerosol Campaign (2008)

• International Polar Year 2007-09• IR Loss (On-going, 2006) and RHUBC, 2007• Boundary Layer Cloud (2005)• Mixed-Phase Arctic Cloud (M-PACE 2004)• NASA AIRS Validation (2002-ongoing)• Arctic Winter Water Vapor (2001, 2004)• Aerosonde Robotic Aircraft (1999-2005)• SHEBA (1997-98)

*About two dozen have taken place at the NSA

Barrow ACRF Facility: “Great White”

Atqasuk

Barrow ‘Duplex’ and Visiting ARM Scientists