ESA-JAXA Pre-Launch EarthCARE
Science and Validation Workshop
13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID40: ARM Facility Measurements forValidation and Research
James Mather, ARM Facility Director
Pacific Northwest National Laboratory

ARM Facility Overview

Measurements ofclouds, aerosols,
precipitation, radiation,
surface properties, andthe atmospheric statesince 1992

Support for process
studies and model andsatellite development

Fiscal Yar (FY) 2022

Network of three
fixed-location andthree mobile
observatories

Piloted anduncrewed aerial
measurement
platforms

Extensive datamanagementinfrastructure; data
freely available

Large-eddy
simulation (LES)
model simulations
and analysis tools

Support for field
campaigns ranging
from guest instruments
to facility deployments

www.arm.gov

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

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Measurements and Locations
Baseline Instruments Include:• Surface meteorology, radiation and heat fluxes• Radiosonde T/RH profiles• Microwave radiometer, IR interferometer• 35 GHz cloud radar, micropulse lidar, Doppler lidar• Hemispheric sky imager• In situ aerosol number, size, and CCN (coming to NSA)

NSA

SGP
BNF

ENA

Additional Instruments at Select Locations:• Raman Lidar (water vapor/aerosol): SGP, BNF, ENA• High Spectral Resolution Lidar: SGP, BNF*, NSA*
• Scanning radars**: SGP, NSA, ENA, BNF
www.arm.gov/capabilities (observatories/instruments)
Southern Great Plains(SGP)

North Slope of Alaska(NSA)

Eastern North Atlantic(ENA)

Southeast U.S. (BNF)
2024-29

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

Tasmania, AU 2024-25

Maryland, US 2025

EVID40: ARM Facility

Data Products
ARM measurements are first processed to “b1” level, providingbase geophysical parameters – usually based on a single
instrument.
Additionally …
Value Added Products• KAZRARSCL: Ka-band Active Remote Sensing of Clouds – cloudboundaries and reflectivity best estimate• MPLCMASKML: Machine Learning-based Micropulse lidar cloudmask• QCRAD: Best estimate broad band fluxes• RLPROF-FEX: Raman lidar feature mask and extinction profiles• TROPoe: FTIR (AERI) optimal estimation retrieval of T/RH profiles

BNF

www.arm.gov/science-data-products/vaps (valued added products)
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

Raman Lidar Profiles – Feature Detection
and Extinction (D. Chand et al., 2022).

EVID40: ARM Facility

Open Data Access• Intelligent search based on user’s comfort
area with advanced metadata and cuttingedge technologies• Recommended data streams and datatagging• Newly developed spatiotemporal viewer(“Location Search”) for ARM field campaign
data• Ability to drill down for detailed information• Tutorial videos and more information @https://www.arm.gov/data/ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID40: ARM Facility

Potential Data Activities for Earthcare• Alignment of ARM radars and/or lidars withEarthCARE• Harmonization of ARM datastreams withACTRIS, NASA, and NOAA
• Development of special datastreams (e.g.
merged data products)

35 GHz ARM Radar (KAZR) – CloudSatalignment: KAZRARSCLCLOUDSAT (K. Johnsonet al., 2022) following P. Kollias et al. (2019)

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID40: ARM Facility

Aerial Platforms
Tethered Balloon System• Max altitude ~1.5km; payload ~50 kg• Measurements: aerosol size, number, filter-based composition• Deployments on proposal-driven basis. Next call expected in January
Uncrewed Aerial System: ArcticShark• Comparable payload and access process as Tethered Balloon• Clear-air flights only to altitude of ~5 km
Regional Jet: Challenger 850 (CRJ200)• Currently undergoing modifications (wing pylons, fuselage probes)• Expected delivery in CY2025; science flights in CY2026
www.arm.gov/capabilities/observatories/aaf
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID40: ARM Facility

Applying for Field Campaigns• Deployment of ARM Mobile Facilities – call for deployments
beginning mid-2026 opens Friday Nov 17. Proposals due Feb 9.
• Call for tethered balloon operations at select site in 2025, call for
proposals opens January• Requests to host guest instruments or to operate instruments inspecial ways (e.g. special radar scans) can be submitted at any
time and are reviewed monthly• The starting point for any of these activities is throughsubmission of a preproposal from the campaigns web pagewww.arm.gov/research/campaigns

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID40: ARM Facility

Summary• ARM measurements are openly available fromthree fixed-location, three mobile observatories,
and aerial platforms• Potential for special data activities supporting
EarthCARE including coordination with ACTRIS(ideas welcome)• Field campaign process provides a mechanism toaugment, modify, or deploy ARM observatories

My contact: Jim.Mather@pnnl.gov
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID40: ARM Facility