ASDC | POLARIS_TraceGas_AircraftInSitu_ER2_Data

POLARIS Level 2

Entry Title: POLARIS ER-2 Aircraft In-situ Trace Gas Data

Entry ID: POLARIS_TraceGas_AircraftInSitu_ER2_Data_1

Field Campaigns

Description

POLARIS_TraceGas_AircraftInSitu_ER2_Data is the in-situ trace gas data collected during the Photochemistry of Ozone Loss in the Arctic Region in Summer (POLARIS) campaign. Data from the High-Sensitivity Fast-Response CO2 Analyzer (Harvard CO2), Advanced Whole Air Sampler (AWAS), Airborne Chromatograph for Atmospheric Trace Species (ACATS), NOAA NOy instrument, Harvard Hydroxyl Experiment (HOx), Airborne Tunable Laser Absorption Spectrometer (ATLAS), Chlorine Nitrate Instrument (ClONO2), NOAA O3 Classic instrument, Submillimeter Limb Sounder (SLS), and the Aircraft Laser Infrared Absorption Spectrometer (ALIAS) are featured in this collection. Data collection for this product is complete.

The POLARIS mission was a joint effort of NASA and NOAA that occurred in 1997 and was designed to expand on the photochemical and transport processes that cause the summer polar decreases in the stratospheric ozone. The POLARIS campaign had the overarching goal of better understanding the change of stratospheric ozone levels from very high concentrations in the spring to very low concentrations in the autumn. The NASA ER-2 high-altitude aircraft was the primary platform deployed along with balloons, satellites, and ground-sites. The POLARIS campaign was based in Fairbanks, Alaska with some flights being conducted from California and Hawaii. Flights were conducted between the summer solstice and fall equinox at mid- to high latitudes. The data collected included meteorological variables; long-lived tracers in reference to summertime transport questions; select species with reactive nitrogen (NOy), halogen (Cly), and hydrogen (HOx) reservoirs; and aerosols. More specifically, the ER-2 utilized various techniques/instruments including Laser Absorption, Gas Chromatography, Non-dispersive IR, UV Photometry, Catalysis, and IR Absorption. These techniques/instruments were used to collect data including N2O, CH4, CH3CCl3, CO2, O3, H2O, and NOy. Ground stations were responsible for collecting SO2 and O3, while balloons recorded pressure, temperature, wind speed, and wind directions. Satellites partnered with these platforms collected meteorological data and Lidar imagery. The observations were used to constrain stratospheric computer models to evaluate ozone changes due to chemistry and transport.

DOI

10.5067/ASDC/SUBORBITAL/POLARIS_TraceGas_AircraftInSitu_ER2_Data_1

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PUBLICATIONS

Preface [to special section on Photochemistry of Ozone Loss in the Arctic Region in Summer (POLARIS)]

From GCMD Science Keywords:

ATMOSPHERIC WATER VAPOR
MOLECULAR HYDROGEN > HYDROGEN COMPOUNDS
NITROGEN DIOXIDE
HALONS > HALOCARBONS AND HALOGENS
SULFUR HEXAFLUORIDE > SULFUR COMPOUNDS
CHLORINE MONOXIDE > HALOCARBONS AND HALOGENS
CHLOROFLUOROCARBONS > HALOCARBONS AND HALOGENS
HYDROXYL > HYDROGEN COMPOUNDS
NITROUS OXIDE > NITROGEN COMPOUNDS
ATMOSPHERIC OZONE > OXYGEN COMPOUNDS
CFC-12 > CHLOROFLUOROCARBONS > HALOCARBONS AND HALOGENS
HYDROGEN CHLORIDE > HALOCARBONS AND HALOGENS
CARBON MONOXIDE
ETHANE > CARBON AND HYDROCARBON COMPOUNDS
HCFC-22 > HYDROCHLOROFLUOROCARBONS > HALOCARBONS AND HALOGENS
ATMOSPHERIC CARBON DIOXIDE > CARBON AND HYDROCARBON COMPOUNDS
NITRIC OXIDE > NITROGEN COMPOUNDS
CHLORINE NITRATE > HALOCARBONS AND HALOGENS
HYDROPEROXY > HYDROGEN COMPOUNDS
SULFUR COMPOUNDS
ATMOSPHERIC NITRIC ACID > NITROGEN COMPOUNDS
CFC-11 > CHLOROFLUOROCARBONS > HALOCARBONS AND HALOGENS

Data Distribution

File Format(s):

.dc8

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Spatial Information

Spatial Coverage: (S: -29.202, N: 90), (W: -180, E: 180)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

ARCTIC NORTHERN HEMISPHERE

Temporal Information

Temporal Coverage: 1997-01-06 - 1997-09-26

Platforms

Jet

NASA ER-2

NASA Earth Resources-2

Harvard CO2

High-Altitude Fast-Response CO2 Analyzer

AWAS

Advanced Whole Air Sampler

ACATS

Airborne Chromatograph for Atmospheric Trace Species

HOx

Harvard Hydroxyl Experiment

ATLAS

Airborne Tunable Laser Absorption Spectrometer

CLONO2

Chlorine Nitrate Instrument

SLS

Submillimeter Limb Sounder

NOAA O3 Classic

Dual-Beam UV-Absorption Ozone Photometer

ALIAS

Airborne Laser Infrared Absorption Spectrometer

Metadata Dates

Created on 2023-06-16

Last updated on 2023-10-10