ASDC | PolarWindsII_DAWN_DC8

Polar Winds II Level 2

Entry Title: Polar Winds II - Doppler Aerosol WiNd (DAWN) - DC8

Entry ID: PolarWindsII_DAWN_DC8_1

Field Campaigns

Description

PolarWindsII_DAWN_DC8_1 is the Polar Winds II - Doppler Aerosol WiNd (DAWN) - DC8 data product. Data collection for this product is complete. Beginning in the fall of 2014, NASA sponsored two airborne field campaigns, collectively called Polar Winds, designed to fly the Doppler Aerosol WiNd (DAWN) lidar and other instruments to take airborne wind measurements of the Arctic atmosphere, specifically over and off the coasts of Greenland during Oct-Nov 2014 and May 2015. In particular, Polar Winds conducted a series of science experiments focusing on the measurement and analyses of lower tropospheric winds and aerosols associated with coastal katabatic flows, barrier winds, the Greenland Tip Jet, boundary layer circulations such as rolls and OLEs (Organized Large Eddies), and near surface winds over open water, transitional ice zones and the Greenland Ice Cap.

Polar Winds I was based in Kangerlussuaq, Greenland and flew DAWN on board the NASA King Air UC-12B during Oct-Nov 2014 while Polar Winds II was based in Keflavik, Iceland and utilized the NASA DC-8 aircraft to fly DAWN and Dropsondes over the Arctic in May 2015. In total, twenty-four individual missions with over 80 hours of research flights were flown in the Arctic region near Greenland and Iceland during Polar Winds.

The focus instrument for the wind measurements taken over the Arctic during Polar Winds was the DAWN airborne wind lidar. At a wavelength of 2.05 microns and at 250 mj per pulse, DAWN is the most powerful airborne Doppler Wind Lidar available today for airborne missions. DAWN has previously been flown on the NASA DC-8 during the 2010 Genesis and Rapid Intensification Processes (GRIP) campaign and on the NASA C-12 for wind field characterization off the coast of Virginia. In addition to DAWN, Polar Winds utilized the High Definition Sounding System (HDSS) dropsonde delivery system developed by Yankee Environmental Services to drop almost 100 dropsondes during Polar Wind II to obtain additional high-resolution vertical wind profiles during most missions. These dropsondes also provided needed calibration/validation for the much newer DAWN measurements.

DOI

10.5067/ASDC_DAAC/POLARWINDSII/0001

Citation Styles for this Dataset

Resources and Documentation

Earthdata Forum

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DATA CITATION POLICY

How to cite ASDC data

GENERAL DOCUMENTATION

ASDC Data and Information for PolarWinds II
Polar Winds II Introduction/Overview

PI DOCUMENTATION

NASA Headquarters Presentation of The 2014 - 2015 PolarWinds DAWN Airborne Campaigns; Instrument Performance, Data Collection and Advanced data Processing Algorithm Development

PRODUCTION HISTORY

Polar Winds DAWN Data Products Overview Document

PUBLICATIONS

A Case Study of Observed and Modeled Barrier Flow in the Denmark Strait in May 2015

Polar Winds Papers and Presentations as of Sep. 1, 2017

White Paper: DAWN Coherent Wind Profiling Lidar Flights on NASA’s DC-8 during GRIP

White Paper: The Doppler Aerosol Wind (DAWN) Airborne, Wind-Profiling Coherent-Detection Lidar System: Overview and Preliminary Flight Results

SCIENCE DATA PRODUCT SOFTWARE DOCUMENTATION

Fortran program that demos sample input of MAPS-related data: [1] Latitude & longitude 2-D fields, [2] Terrain 2-D field, [3] MAPS 3-D fields for 6 variables - Direct File Download (.f)

SCIENCE DATA PRODUCT VALIDATION

Polar Winds II Validation Statement

From GCMD Science Keywords:

UPPER LEVEL WINDS
SURFACE WINDS
WIND PROFILES
ATMOSPHERIC WINDS
LIDAR
BOUNDARY LAYER WINDS > UPPER LEVEL WINDS

Boundary Layer Winds
Calibration
Lidar
Surface Winds
Upper Level Winds
Validation
Wind Profiles

Data Distribution

File Format(s):

ASCII

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Spatial Information

Spatial Coverage: (S: 49, N: 70.5), (W: -59, E: 15.5)
Spatial Coverage Type: Horizontal
Horizontal Resolution Range: Point Resolution
Vertical Resolution Range: Point Resolution
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

ARCTIC GREENLAND

Temporal Information

Temporal Coverage: 2015-05-11 - 2015-05-25

Platforms

Aircraft

NASA DC-8

NASA Douglas DC-8

DAWN

Doppler Aerosol WiNd Lidar

Coherent Lidar

Metadata Dates

Created on 2017-10-03

Last updated on 2022-10-26