Data Set Description ******************** Data Set Name: FIRE II 2D PROBE CONCENTRATIONS FOR THE NCAR SABRELINER Data Set Producer: NAME: DR. ANDREW J. HEYMSFIELD ADDRESS: NATIONAL CENTER FOR ATMOSPHERIC RESEARCH P. O. BOX 3000 BOULDER, CO 80307-3000 TELEPHONE: (303) 497-8943 FAX: (303) 497-8181 INTERNET ADDRESS: HEYMS1@NCAR.UCAR.EDU List all geophysical parameters along with the corresponding units, fill values, and minimum and maximum values. (e.g., albedo, unitless, -999, 0, 1) PROBE NUMBER, unitless, 0, 1, 2 1 = INDICATES 2D-C PROBE CONCENTRATION MEASUREMENT 2 = INDICATES 2D-P PROBE CONCENTRATION MEASUREMENT TIME INTERVAL, HHMMSS (GMT), -999, 000000, 235959 LAPSE TIME, s, -999, 0, 5 AIR SPEED, m/s, -999, 0, 999 PROBE CONCENTRATION, #/L, -999, 0, 99999 List all data sources, their respective sensor/instruments, and the parameter(s) measured by each (e.g., ground sites, rawinsonde, temperature). NCAR SABRELINER, PARTICLE MEASUREMENT SYSTEM (PMS) 2D-C PROBE, CONCENTRATION COUNTS NCAR SABRELINER, PARTICLE MEASUREMENT SYSTEM (PMS) 2D-P PROBE, CONCENTRATION COUNTS Provide a definition and/or brief description of all geophysical parameters, sensor/instruments and source/platforms. The PMS 2D-C and 2D-P probes illuminate a linear array of photodiodes with a He-Ne laser. As a particle passes through this focused beam, a shadow image is cast on the diodes and a count of the total number of occulted diodes represents the particle size. Processing Level: Level 0_____ Level 1A____ Level 1B__X__ Level 2_____ Level 3_____ Level 4_____ (0=Raw radiance data, 1A=Data unprocessed to sensor units, 1B=Data processed to sensor units, 2=Derived geophysical parameters, 3=Geolocated geophysical parameters, 4=Data from multiple measurements) Spatial Coverage (Range): Minimum Latitude: N/A Maximum Latitude: N/A Minimum Longitude: N/A Maximum Longitude: N/A Describe any gaps that may exist in the spatial coverage. N/A Spatial Resolution (e.g., 2.5 x 2.5 degree grid): N/A Temporal Coverage: Start Date (mm/dd/yy): 11/09/91 Stop Date (mm/dd/yy): 12/06/91 Describe any gaps that may exist in the temporal coverage. 11/26/91, 10:46:26-12:37:26, FLIGHT RF06: NO 2DC OR 2DP DATA 12/05/91, 20:23:14-23:25:19, FLIGHT RF13: NO 2DP DATA 12/06/91, 13:59:07-17:02:55, FLIGHT RF14: NO 2DP DATA Temporal Resolution: What is the smallest unit of data collected (e.g., 1 second, daily, monthly, etc.)? 5 SECONDS Were the data collected during the day, night or both? BOTH Data Set Point of Contact: NAME: DR. ANDREW J. HEYMSFIELD ADDRESS: NATIONAL CENTER FOR ATMOSPHERIC RESEARCH P. O. BOX 3000 BOULDER, CO 80307-3000 TELEPHONE: (303) 497-8943 FAX: (303) 497-8181 EMAIL: HEYMS1@NCAR.UCAR.EDU Data Set Processing History *************************** When was this data set processed (mm/dd/yy)? 05/11/95, 1/20/97 Is this data set still being generated? YES; UNDER EVALUATION USING DATA FROM THE SUCCESS FIELD PROGRAM. If so, at what rate (e.g., 1 file/day)? N/A Does this data set require further processing by the Langley DAAC? NO If so, does the software exist to do this processing? In what computer language is the software written? On which computer systems has this software been developed? On what systems has this software run successfully? Provide the point of contact for this software. Name: Address: Telephone: Fax: Internet Address: What is the version number of this data set? VERSION 1.0 Describe the computer system(s) on which this data set was processed. Software: FORTRAN 77 Hardware: SUN SPARC 20 Operating System: SUNOS 4.1.3 Media Used: Hard Drive Describe verification/validation procedures used with this data set. Are there currently any plans to reprocess this data set? YES If so, when will the data set be reprocessed? SPRING 1997 Why will the data set be reprocessed? Recent SUCCESS measurements will help establish the validity of the processing techniques and a better idea of how to convert particle size to diameter. Is this data set in HDF (EOS Standard Data Format) or ASCII? ASCII If not, are you willing to convert the data set to HDF prior to delivery to the Langley DAAC? If you are not willing to convert the data to HDF, why not? If you are willing to convert the data to HDF, will you need guidance from the Langley DAAC? Do you need HDF documentation? Describe the organization of the data set. THE DATA IS ORGANIZED ON A SINGLE FLIGHT BASIS, FOR BOTH THE KING AIR AND THE SABRELINER. RELEVANT PORTIONS OF THE HEADER FROM THE RAW BINARY FILES ARE INCLUDED. EACH DATA FILE CONTAINS PROCESSED CONCENTRATION DATA BASED ON HABIT TYPE AND AREA RATIO. If data are not in HDF or ASCII, please describe the header, table of contents, ancillary, data and trailer files in the following sections. Total number of files (including headers, ancillary files, etc.): Header files: Quantity: Format: Length of each (in bytes): Total number of physical records: Total number of logical records: Number of variables in each record: Number of leading/trailing blanks between records: Table of content files: Quantity: Format: Length of each (in bytes): Total number of physical records: Total number of logical records: Number of variables in each record: Number of leading/trailing blanks between records: Ancillary files: Quantity: Format: Length (in bytes): Total number of physical records: Total number of logical records: Number of variables in each record: Number of leading/trailing blanks between records: Data files: Quantity: Format: Length of each file (in bytes): Total number of physical records: Total number of logical records: Number of variables in each record: Number of leading/trailing blanks between records: Trailer files: Quantity: Format: Length of each file (in bytes): Total number of physical records: Total number of logical records: Number of variables in each record: Number of leading/trailing blanks between records: If possible, please submit a sample data file with this request. Data Processing Point of Contact: NAME: DR. ANDREW J. HEYMSFIELD ADDRESS: NATIONAL CENTER FOR ATMOSPHERIC RESEARCH P. O. BOX 3000 BOULDER, CO 80307-3000 TELEPHONE: (303) 497-8943 FAX: (303) 497-8181 EMAIL: HEYMS1@NCAR.UCAR.EDU Browse Products *************** Describe any browse products that will be included with this data set. NO BROWSE PRODUCTS PROVIDED. Format (e.g., GIF, TIFF, HDF, etc.) Number of browse images: Size of each image (in bytes): Uncompressed: Compressed: If compressed, what compression scheme was used? What is the resolution of each image (e.g. 640x480)? Software used to create browse images (e.g., IDL, NCAR Graphics, PV-WAVE, Spyglass, etc.): Browse Product Point of Contact: Name: Address: Telephone Number: Fax: Internet Address: If no browse products currently exist, do you have plans to produce any in the future? NO Data Delivery ************* What is the projected date for data set delivery? 2/97 How will the data be delivered to the Langley DAAC? REMOTE FTP Media: Type (e.g., 4mm, 8mm, 3480, 6250, floppies, etc.): Quantity (e.g., 1, 4, 50, etc.): Have the data been compressed? If so, what compression scheme was used? Have you used the UNIX TAR command to write the data to tape? Total Volume: FTP: NOTE: The Langley DAAC prefers to pull the data from your ftp site; however, arrangements can be made for data producers to push data to our ftp site. Number of files (e.g, 1, 4, 50, etc.): 14 Size of files (in bytes): 30789101 (uncompressed), 3544176 (compressed) Have the data been compressed and/or tarred for delivery? Yes, *.gz extension on each file. Total Volume: Data Delivery Point of Contact: NAME: DR. ANDREW J. HEYMSFIELD ADDRESS: NATIONAL CENTER FOR ATMOSPHERIC RESEARCH P. O. BOX 3000 BOULDER, CO 80307-3000 TELEPHONE NUMBER: (303) 497-8943 FAX: (303) 497-8181 EMAIL ADDRESS: HEYMS1@NCAR.UCAR.EDU Read Software ************* The Langley DAAC requires data producers to provide read software for their data sets. ASCII FORMAT Describe all software being delivered with this data set. Type (e.g., data dump, etc.): Language (e.g., Fortran, C, C++, etc.): On which computer system(s) was this software written? On which computer system(s) was this software successfully compiled and run? Is this software portable to other computer systems? Read Software Point of Contact: User Community ************** Describe the current user community of this data set (if any). [For example: number of requests for data, etc.] 3-5 DATA REQUESTS PER YEAR. Method which is currently used to distribute data to users: REMOTE FTP List all ancillary files and documentation currently included with distribution of data set to user. NONE Documentation ************* The Langley DAAC requires documentation to be submitted along with each data set that describes the processing history, format, read software, and data. Please indicate the following information for each document: Title: Type (e.g., data format, software, etc.): Author: Most recent version date: List any other documents that would be useful to a new user of this data set. Documentation Point of Contact: References ********** Please provide a list of publications and journal articles pertaining to this data set or project (if any). Heymsfield, A. J., 1977: Precipitation development in stratiform ice clouds: A microphysical and dynamical study. J. Atmos. Sci., 34, 284--295. Heymsfield, A. J. and J. L. Parrish, 1978: A computational technique for increasing the effective sampling volume of the PMS 2--D particle size spectrometer. J. Appl. Meteor., 17, 1566--1572. Parrish, J. L., and A. J. Heymsfield, 1985: A user guide to a particle growth and trajectory model (Using one--dimensional and three--dimensional wind fields). NCAR Tech Note NCAR/TN--259+1A, 69 pp.