ASDC | ARCTAS_Model_Data

ARCTAS Level 4

Entry Title: ARCTAS Model Data

Entry ID: ARCTAS_Model_Data_1

Aerosols Clouds Tropospheric Composition

Description

ARCTAS_Model_Data contains modeled chemical and aerosol data along the flight tracks of the DC-8 and P-3B aircraft during the Arctic Research of the Composition of the Troposphere from Aircraft & Satellites (ARCTAS) mission. Models used include the GEOS-5, GEOS-Chem, STEM Model Forecasts, MOZART-4, and CMAQ models. Data collection for this product is complete.

The Arctic is a critical region in understanding climate change. The responses of the Arctic to environmental perturbations such as warming, pollution, and emissions from forest fires in boreal Eurasia and North America include key processes such as the melting of ice sheets and permafrost, a decrease in snow albedo, and the deposition of halogen radical chemistry from sea salt aerosols to ice. ARCTAS was a field campaign that explored environmental processes related to the high degree of climate sensitivity in the Arctic. ARCTAS was part of NASA’s contribution to the International Global Atmospheric Chemistry (IGAC) Polar Study using Aircraft, Remote Sensing, Surface Measurements, and Models of Climate, Chemistry, Aerosols, and Transport (POLARCAT) Experiment for the International Polar Year 2007-2008.

ARCTAS had four primary objectives. The first was to understand long-range transport of pollution to the Arctic. Pollution brought to the Arctic from northern mid-latitude continents has environmental consequences, such as modifying regional and global climate and affecting the ozone budget. Prior to ARCTAS, these pathways remained largely uncertain. The second objective was to understand the atmospheric composition and climate implications of boreal forest fires; the smoke emissions from which act as an atmospheric perturbation to the Arctic by impacting the radiation budget and cloud processes and contributing to the production of tropospheric ozone. The third objective was to understand aerosol radiative forcing from climate perturbations, as the Arctic is an important place for understanding radiative forcing due to the rapid pace of climate change in the region and its unique radiative environment. The fourth objective of ARCTAS was to understand chemical processes with a focus on ozone, aerosols, mercury, and halogens. Additionally, ARCTAS sought to develop capabilities for incorporating data from aircraft and satellites related to pollution and related environmental perturbations in the Arctic into earth science models, expanding the potential for those models to predict future environmental change.

ARCTAS consisted of two, three-week aircraft deployments conducted in April and July 2008. The spring deployment sought to explore arctic haze, stratosphere-troposphere exchange, and sunrise photochemistry. April was chosen for the deployment phase due to historically being the peak in the seasonal accumulation of pollution from northern mid-latitude continents in the Arctic. The summer deployment sought to understand boreal forest fires at their most active seasonal phase in addition to stratosphere-troposphere exchange and summertime photochemistry.

During ARCTAS, three NASA aircrafts, the DC-8, P-3B, and BE-200, conducted measurements and were equipped with suites of in-situ and remote sensing instrumentation. Airborne data was used in conjunction with satellite observations from AURA, AQUA, CloudSat, PARASOL, CALIPSO, and MISR.

The ASDC houses ARCTAS aircraft data, along with data related to MISR, a satellite instrument aboard the Terra satellite which provides measurements that provide information about the Earth’s environment and climate.

DOI

10.5067/ASDC/SUBORBITAL/ARCTAS_Model_Data_1

Citation Styles for this Dataset

Resources and Documentation

Earthdata Forum

PROJECT HOME PAGE

ESPO Home Page for ARCTAS

ARCTAS Home Page

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DATA CITATION POLICY

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GENERAL DOCUMENTATION

ASDC Home Page for MISR

PUBLICATIONS

ARCTAS Overview Paper

ARCTAS White Paper

SCIENCE DATA PRODUCT VALIDATION

ARCTAS Final Data Comparison Results

From GCMD Science Keywords:

UPPER LEVEL WINDS
NITROGEN OXIDES > NITROGEN COMPOUNDS
WIND DIRECTION > SURFACE WINDS
WIND SPEED > UPPER LEVEL WINDS
ATMOSPHERIC OZONE > OXYGEN COMPOUNDS
SULFUR DIOXIDE > SULFUR COMPOUNDS
TRACE GASES/TRACE SPECIES
DINITROGEN PENTOXIDE > NITROGEN COMPOUNDS
DUST/ASH/SMOKE
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC NITRIC ACID > NITROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN DIOXIDE > NITROGEN COMPOUNDS
CLOUD OPTICAL DEPTH/THICKNESS > CLOUD MICROPHYSICS
SULFATE > SULFUR COMPOUNDS
FORMALDEHYDE > CARBON AND HYDROCARBON COMPOUNDS
SURFACE PRESSURE
AEROSOL EXTINCTION
ORGANIC CARBON
SURFACE WINDS
CARBON AND HYDROCARBON COMPOUNDS
SULFUR OXIDES > SULFUR COMPOUNDS
ATMOSPHERIC PRESSURE
WIND DIRECTION > UPPER LEVEL WINDS
AMMONIA > NITROGEN COMPOUNDS
AEROSOL PARTICLE PROPERTIES
RELATIVE HUMIDITY > HUMIDITY > WATER VAPOR INDICATORS
NITRIC OXIDE > NITROGEN COMPOUNDS
CARBON MONOXIDE
ALTITUDE
ATMOSPHERIC CARBON MONOXIDE > CARBON AND HYDROCARBON COMPOUNDS
SULFUR COMPOUNDS
CLOUD FRACTION > CLOUD PROPERTIES
WIND SPEED > SURFACE WINDS
AIR TEMPERATURE > SURFACE TEMPERATURE
OXYGEN COMPOUNDS
AEROSOL OPTICAL DEPTH/THICKNESS
TROPOSPHERIC OZONE

Data Distribution

File Format(s):

NetCDF-3, ICARTT

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Spatial Information

Spatial Coverage: (S: 32, N: 90), (W: -180, E: 180)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

NORTH AMERICA CANADA UNITED STATES OF AMERICA WESTERN HEMISPHERE MID-LATITUDE NORTHERN HEMISPHERE TROPOSPHERE ARCTIC

Temporal Information

Temporal Coverage: 2008-03-30 - 2008-07-14

Platforms

Models

Global 3-D chemical transport model (CTM) for atmospheric composition driven by meteorological input from the Goddard > Earth Observing System (GEOS) of the NASA Global Modeling and Assimilation Office

Computer

CLIMATE MODELS

Computer

Metadata Dates

Created on 2022-01-24

Last updated on 2023-05-31