ASDC | DISCOVERAQ_Texas_Aerosol_AircraftInSitu_P3B_Data

DISCOVER-AQ Level 2

Entry Title: DISCOVER-AQ Texas Deployment P-3B Aircraft In Situ Aerosol Data

Entry ID: DISCOVERAQ_Texas_Aerosol_AircraftInSitu_P3B_Data_1

Aerosols

Description

DISCOVERAQ_Texas_Aerosol_AircraftInSitu_P3B_Data contains in situ aerosol data collected onboard NASA's P-3B aircraft during the Texas (Houston) deployment of NASA's DISCOVER-AQ field study. Instruments utilized to collect data found in this data product include the PSAP, APS, CPC, CCN, Nephelometer, LAS, PILS, , TOC, SMPS, SP2 and UHSAS. This data product contains data for only the Texas deployment and data collection is complete.

Understanding the factors that contribute to near surface pollution is difficult using only satellite-based observations. The incorporation of surface-level measurements from aircraft and ground-based platforms provides the crucial information necessary to validate and expand upon the use of satellites in understanding near surface pollution. Deriving Information on Surface conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) was a four-year campaign conducted in collaboration between NASA Langley Research Center, NASA Goddard Space Flight Center, NASA Ames Research Center, and multiple universities to improve the use of satellites to monitor air quality for public health and environmental benefit. Through targeted airborne and ground-based observations, DISCOVER-AQ enabled more effective use of current and future satellites to diagnose ground level conditions influencing air quality.

DISCOVER-AQ employed two NASA aircraft, the P-3B and King Air, with the P-3B completing in-situ spiral profiling of the atmosphere (aerosol properties, meteorological variables, and trace gas species). The King Air conducted both passive and active remote sensing of the atmospheric column extending below the aircraft to the surface. Data from an existing network of surface air quality monitors, AERONET sun photometers, Pandora UV/vis spectrometers and model simulations were also collected. Further, DISCOVER-AQ employed many surface monitoring sites, with measurements being made on the ground, in conjunction with the aircraft. The B200 and P-3B conducted flights in Baltimore-Washington, D.C. in 2011, Houston, TX in 2013, San Joaquin Valley, CA in 2013, and Denver, CO in 2014. These regions were targeted due to being in violation of the National Ambient Air Quality Standards (NAAQS).

The first objective of DISCOVER-AQ was to determine and investigate correlations between surface measurements and satellite column observations for the trace gases ozone (O3), nitrogen dioxide (NO2), and formaldehyde (CH2O) to understand how satellite column observations can diagnose surface conditions. DISCOVER-AQ also had the objective of using surface-level measurements to understand how satellites measure diurnal variability and to understand what factors control diurnal variability. Lastly, DISCOVER-AQ aimed to explore horizontal scales of variability, such as regions with steep gradients and urban plumes.

DOI

10.5067/ASDC/SUBORBITAL/DISCOVERAQ_Texas_Aerosol_AircraftInSitu_P3B_Data_1

Citation Styles for this Dataset

Resources and Documentation

Earthdata Forum

PROJECT HOME PAGE

DISCOVER-AQ Project Home Page

NASA DISCOVER-AQ Mission Page

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GENERAL DOCUMENTATION

From GCMD Science Keywords:

CLOUD CONDENSATION NUCLEI
PARTICULATE MATTER
NITRATE PARTICLES
AEROSOL EXTINCTION
AEROSOLS
SULFATE PARTICLES
WATER-SOLUBLE AEROSOL ORGANIC MASS > CHEMICAL COMPOSITION
AEROSOL PARTICLE PROPERTIES
AEROSOL BACKSCATTER
AEROSOL FORWARD SCATTER

Data Distribution

File Format(s):

ICARTT

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Spatial Information

Spatial Coverage: (S: 23, N: 43), (W: -100, E: -70)
(S: 31.535, N: 34.674), (W: -123.199, E: -117.883)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

NORTH AMERICA UNITED STATES OF AMERICA TEXAS NORTHERN HEMISPHERE WESTERN HEMISPHERE STRATOSPHERE TROPOSPHERE

Temporal Information

Temporal Coverage: 2013-08-26 - 2013-10-01

Platforms

Propeller

P-3B

Lockheed P-3B Orion

APS

Aerodynamic Particle Sizer

CCN

CCN Counter

TSI-3563 Neph

TSI-3563 Nephelometer

PSAP

3-Wavelength Particle Soot Absorption Photometer Manufactured by Radiance Research

PILS/IC

Particle-IntBMI Particle-Into-Liquid Sampler Manufactured by Brechtel and ICS-3000 Ion Chromatography System Manufactured by Thermo Scientific Dionexo-Liquid Sample

Total Organic Carbon Analyzer

SMPS

Scanning Mobility Particle Sizer

DMT SP2

Single Particle Soot Photometer Manufactured by Droplet Measurement Technologies

UHSAS

Ultra-High Sensitivity Aerosol Spectrometer

Metadata Dates

Created on 2021-08-24

Last updated on 2024-04-26