ASDC | AJAX_O3

AJAX Level 2

Entry Title: Alpha Jet Atmospheric eXperiment Ozone Data

Entry ID: AJAX_O3_1

Field Campaigns

Description

The Alpha Jet Atmospheric eXperiment (AJAX) is a partnership between NASA's Ames Research Center and H211, L.L.C., facilitating routine in-situ measurements over California, Nevada, and the coastal Pacific in support of satellite validation. The standard payload complement includes rigorously-calibrated ozone (O3), formaldehyde (HCHO), carbon dioxide (CO2), and methane (CH4) mixing ratios, as well as meteorological data including 3-D winds. Multiple vertical profiles (to ~8.5 km) can be accomplished in each 2-hr flight. The AJAX project has been collecting trace gas data on a regular basis in all seasons for over a decade, helping to assess satellite sensors' health and calibration over significant portions of their lifetimes, and complementing surface and tower-based observations collected elsewhere in the region.

AJAX supports NASA's Orbiting Carbon Observatory (OCO-2/3) and Japan's Greenhouse Gases Observing Satellite (GOSAT) and GOSAT-2, and collaborates with many other research organizations (e.g. California Air Resources Board (CARB), NOAA, United States Forest Service (USFS), Environmental Protection Agency (EPA)). AJAX celebrated its 200th science flight in 2016, and previous studies have investigated topics as varied as stratospheric-to-tropospheric transport, forest fire plumes, atmospheric river events, long-range transport of pollution from Asia to the western US, urban outflow, and emissions from gas leaks, oil fields, and dairies.

DOI

10.5067/ASDC/AJAX_O3

Citation Styles for this Dataset

Resources and Documentation

Earthdata Forum

PROJECT HOME PAGE

AJAX Project Website

VIEW RELATED INFORMATION

DATA CITATION POLICY

ASDC Data Citation Policy
Creative Commons License (CC BY 4.0)

GENERAL DOCUMENTATION

HOW-TO

AJAX Flight Catalog Tutorial

PUBLICATIONS

A Collection of Airborne Measurements and Analyses of Trace Gases Emitted From Multiple Fires in California

AJAX Overview Paper - Bulletin of the American Meteorological Society

AJAX on Daily Planet (Discovery Channel Canada, aired Feb 15, 2018)

From GCMD Science Keywords:

ATMOSPHERIC OZONE > OXYGEN COMPOUNDS

Data Distribution

File Format(s):

ICARTT

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Spatial Information

Spatial Coverage: (34, 42), (-125, -114)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

NORTH AMERICA UNITED STATES OF AMERICA CALIFORNIA NEVADA TROPOSPHERE WESTERN HEMISPHERE NORTHERN HEMISPHERE EASTERN PACIFIC OCEAN NORTH PACIFIC OCEAN

Temporal Information

Temporal Coverage: 2011-02-01 - Present

Platforms

Jet

Alpha

H211 Alpha Jet

2B Technologies

2B Technologies Ozone Monitor

Metadata Dates

Created on 2021-05-11

Last updated on 2023-01-27