Differential Aerosol Sizing and Hygroscopicity Spectrometer Probe (DASH-SP)

Status

Status:

Operational

Operated By:

Schematic of the DASH-SP summarizing the transport path of sampled aerosol.

The DASH-SP providse rapid measurements of size-resolved aerosol sub-saturated hygroscopic growth factors and the real part of aerosol refractive index. It has been deployed aboard the NASA DC-8 during the DC3 and SEAC4RS field campaign and also on the P3 during ARCSIX (May-Aug 2024).

Instrument Type:

Differential mobility, Spectrometer (in situ)

Measurements:

Aerosol

Aircraft:

DC-8 - AFRC, P-3 Orion - WFF

Missions:

ARCSIX (P-3 Orion - WFF); DC3 (DC-8 - AFRC); SEAC4RS (DC-8 - AFRC)

Point(s) of Contact:

Armin Sorooshian (POC; PI)

Measurement Details

Range of Measurement: In situ

Measurement Frequency: 1 Hz

Measurement Wavelengths:

405 nm (DC3/SEAC4RS were 532 nm, and ARCSIX is 405 nm)

Integration Details

Weight: 220 kg

Size: 45 cm (l) x 59 cm (w) x 66 cm (h)

Power: 240 W

Location: samples from either isokinetic inlet or counterflow virtual impactor inlet

Additional Information

Notes:

Time resolution varies from as fast as 1 second data to longer times dependent on the ambient aerosol number concentration at a specific dry diameter being sampled at a given time

Mission-Specific Writeups:

SEAC4RS

TRL:

Publications:

Sorooshian, A., et al. (2008), Rapid, size-resolved aerosol hygroscopic growth measurements: differential aerosol sizing and hygroscopicity spectrometer probe (DASH-SP), Aerosol Sci. Tech., 42, 445-464.

NASA - National Aeronautics and Space Administration

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Differential Aerosol Sizing and Hygroscopicity Spectrometer Probe (DASH-SP)

Status