GPM Ground Validation NASA ER-2 Navigation Data MC3E

Table of Contents

Introduction
Campaign
Platform Description
Investigators
File Naming Convention
Data Format
Citation
Contact Information

Introduction

The NASA MC3E ER-2 Navigation data files contain information recorded by an on board navigation recorder (NavRec). In addition to typical navigation data (e.g. date, time, lat/lon and altitude) it contains outside meteorological parameters such as wind speed and direction and temperature. These ASCII text files are recorded every second for the length of the sortie. Data was collected from 22 April 2011 through 03 June 2011.

Note: The Flight Summaries and Flight Track Imagery dataset which includes sonde maps, radar animation, 5-minute KICT track snapshots is distributed with this dataset. Further details on the Flight Summaries and Flight Track Imagery dataset are available here.

Campaign

The Midlatitude Continental Convective Clouds Experiment (MC3E) took place in central Oklahoma during the April-June 2011 period. The experiment was a collaborative effort between the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility and the National Aeronautics and Space Administration's (NASA) Global Precipitation Measurement (GPM) mission Ground Validation (GV) program. The field campaign leveraged the unprecedented observing infrastructure currently available in the central United States, combined with an extensive sounding array, remote sensing and in situ aircraft observations, NASA GPM ground validation remote sensors, and new ARM instrumentation purchased with American Recovery and Reinvestment Act funding. The overarching goal was to provide the most complete characterization of convective cloud systems, precipitation, and the environment that has ever been obtained, providing constraints for model cumulus parameterizations and space-based rainfall retrieval algorithms over land that had never before been available.

Further details on GPM MC3E are available at http://gpm.nsstc.nasa.gov/mc3e/. Information on MC3E ARM is available at http://campaign.arm.gov/mc3e/.

Platform Description

The NASA MC3E ER-2 is a high altitude aircraft almost identical to the USAF U-2 which flies at a cruise altitude of approximately 60,000 ft. It is used by NASA as a platform for various airborne research. Air temperature measurements were collected from a temperature probe. An INS provided attitude characteristics and measurements of upper level winds.

Investigators

Lawrence Freudinger
NASA Dryden Flight Research Center
PO Box 273
MS 1623I
Edwards CA 93523-0273

Sky Yarbrough
NASA Dryden Flight Research Center
PO Box 273
MS 1623I
Edwards CA 93523-0273

Gloria Fields
NASA Dryden Flight Research Center
PO Box 273
MS 1623I
Edwards CA 93523-0273

File Naming Convention

Data files are of the form:

mc3e_yyyy-mm-dd_ER2.dat
mc3e_er2_yyyymmdd_####_F13.txt

where

mc3e = Midlatitude Continental Convective Clouds Experiment
ER2,er2 = NASA ER-2 Aircraft
#### = flight number
yyyy = year
mm = month
dd = day
dat = Data file
txt = ASCII text file

Data Format

The GPM Ground Validation NASA ER-2 Navigation Data MC3E dataset consists of ASCII files containing navigation data and outside meteorological parameters. The .txt files contain a header describing each column of data which is in tabular format. The column descriptions are also applicable to the .dat files which are in IWG1 format. Further information on the IWG1 data format is available at http://www.eol.ucar.edu/raf/Software/iwgadts/IWG1_Def.html.

Citation

Our data sets are provided through the NASA Earth Science Data and Information System (ESDIS) Project and the Global Hydrology Resource Center (GHRC) Distributed Active Archive Center (DAAC). GHRC DAAC is one of NASA's Earth Observing System Data and Information System (EOSDIS) data centers that are part of the ESDIS project. ESDIS data are not copyrighted; however, in the event that you publish our data or results derived by using our data, we request that you include an acknowledgment within the text of the article and a citation on your reference list. Examples for general acknowledgments, data set citation in a reference listing, and crediting online web images and information can be found at: http://ghrc.nsstc.nasa.gov/uso/citation.html

Contact Information

To order these data or for further information, please contact:

Global Hydrology Resource Center
User Services
320 Sparkman Drive
Huntsville, AL 35805
Phone: 256-961-7932
E-mail: ghrcdaac@itsc.uah.edu
Web: http://ghrc.nsstc.nasa.gov/