University of Washington Convair 580 Data

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University of Washington Convair 580 Data

Introduction: Sponsor
The Data: Characteristics
The Files: Naming Conventions; File Formats

Line Formats

Data Access & Contacts: FTP Site; Points of Contact

CV580 Data Online

Introduction

This file contains information about the data provided by the University of Washington instruments flown onboard their CV580 aircraft during the KWAJEX field campaign. This data is preliminary and is not final!

Each data file contains one flight of data, taken at approximately 1Hz intervals. The data consists of navigation, meteorology, and cloud physics.

Sponsor

The distribution of these data sets is funded by NASA's Earth Science Enterprise. The data are not copyrighted; however, we request that when you publish data or results using these data, please acknowledge as follows:

The authors wish to thank Prof. Peter V. Hobbs, Department of Atmospheric Sciences, University of Washington for the production of these data and the Distributed Active Archive Center(Code 610.2) at the Goddard Space Flight Center, Greenbelt, MD, 20771, which archives and distributes them under sponsorship of NASA's Earth Science Enterprise.

Professor Peter V. Hobbs died in July 2005. Please direct questions about this data set to The University of Washington Cloud & Aerosol Research Group

The Data

Characteristics

This data set consists of navigation, meteorology and cloud physics parameters collected onboard the University of Washington's Convair 580. Data were collected on 18 flights from July 25, 1999 through August 31, 1999.

The Files

Each data file contains one flight of data, taken at approximately 1Hz intervals. The data consists of navigation, meteorology, and cloud physics.

Naming Conventions

The data files are named prelim_xxxx.txt where: prelim = processing level; xxxx = 4-digit flight number; txt = ascii text

File Formats.

The data files are simple text files with each second of data on its own line. All data is tab delimited. Bad values are denoted with the value '-999.99'.

These files were created in an Unix environment, so each line terminates with a line feed, not a carriage-return/line-feed as in DOS and Windows. You can easily convert these files to the Windows format by opening and saving these files using WordPad.

Columm	Parameter	Units	Range
Line Formats. Line 1 contains the flight number (1783 through 1800). Lines 2-9 contain column headers as well as any other pertinent notes (such as any time discontinuities in the data). Lines 10 and beyond contain data records -- 1 record for each second of flight. Column Formats: All data columns are tab delimited.
01	Year	4 digit year
02	Month	2 digit month	01 to 12
03	Day	2 digit day	01 to 31
04	Hour*	2 digit hour (utc)	00 to 34
05	Minute	2 digit minute (utc)	00 to 59
06	Second	2 digit second (utc)	00 to 59
07	Latitude	degrees (4 decimal places)	-90.0000 to 90.0000
08	Longitude	degrees (4 decimal places)	-180.0000 to 180.0000
09	Altitude above Mean Sea Level	feet (0 decimal places)	-50 to 20000
10	Source of Position Data	'G' for GPS.
11	Static Temperature	degrees Celsius (1 decimal place)	-40 to 40
12	True Air Speed	meters/second (1 decomal place)	0 to 200
13	Ground Speed	meters/second (1 decimal place)	0 to 200
14	Rosemount Static Pressure	millibars (no decimal places)	200 to 1200
15	Cambridge chilled mirror dewpoint temperature	degrees Celsius (1 decimal place)	-40 to 40
16	Ophir hygrometer dewpoint temperature	degrees Celsius (1 decimal place)	-40 to 40
17	Vertical Velocity	meters/second (1 decimal place)	-100 to 100
18	FSSP 100 Particle Concentration	particles/cubic centimeter (1 decimal place)	0 to 1000
*Note: If a flight starts before midnight and ends after midnight, the hour will continue to increment beyond 23 (11 PM). Thus, in this case, 12AM becomes 24, 1AM becomes 25, etc.

Data Access

FTP Site

The Convair 580 data from KWAJEX may be accessed from this page,

Convair 580 Data Online

or directly via ftp:: ftp disc2.nascom.nasa.gov; logon: anonymous; passwd: <your internet address>; cd data/KWAJ/aircraft/uw_convair/CV580_data

Points of Contact

For additional information, please contact the GES DISC User Services:

GES DISC User Services
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
301-614-5224
Email: help-disc@listserv.gsfc.nasa.gov

Last update:Fri Nov 21 11:41:48 EST 2003

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