uid=SEV,o=LTER,dc=ecoinformatics,dc=org all public read Douglas I. Moore SEV LTER

Sevilleta LTER, 167 Castetter Hall, University of New Mexico Albuquerque NM 87131

dmoore@sevilleta.unm.edu 9661 1987 english

This file contains 1986 daily lightning activity data for the state of New Mexico. These data were collected by a network of lightning detection stations scattered throughout the western United States. More information regarding the LLP Lightning Locating System can be found in Maier et al. (1983).

disturbance Core Areas disturbances lightning LTER Controlled Vocabulary

This dataset is released to the public and may be freely downloaded. Please keep the designated Contact person informed of any plans to use the dataset. Consultation or collaboration with the original investigators is strongly encouraged. Publications and data products that make use of the dataset must include proper acknowledgement of the Sevilleta LTER. Datasets must be cited as in the example below. Muldavin, E. 2004. Sevilleta LTER Fertilizer NPP Study Dataset. Albuquerque, NM: Sevilleta Long Term Ecological Research Site Database: SEV155. (Date of download) A copy of any publications using these data must be supplied to the Sevilleta LTER Information Manager.

http://sev.lternet.edu/node/1641 1986-01-01 1986-12-31 This file contains 1986 daily lightning activity data for the state of New Mexico. These data were collected by a network of lightning detection stations scattered throughout the western United States. More information regarding the LLP Lightning Locating System can be found in Maier, et.al. (1983). 01/24/95 - Created file on this date. Greg Shore.   Information Manager Sevilleta LTER SEV LTER

1 University of New Mexico Albuquerque 87131

(505) 277-2109 (505) 277.5355 data-use@sevilleta.unm.edu Sevilleta LTER

  Only data on cloud-to-ground lightning flashes are recorded in this file.  Note that each cloud-to-ground lightning flash is composed of one or more highly energetic discharges known as return strokes. Thus each lightning observation found in this file contains a column showing the number of return strokes associated with each flash. In addition, each observation includes information on the time of the flash, location (latitude/longitude), polarity, and signal amplitude. The lightning flash location is determined by triangulation. The accuracy of the flash location is dependent on the number of stations detecting the flash, the flash location with respect to the detecting stations (i.e. poor accuracy if on the baseline between two stations), and the distance between the detecting stations. When the detecting stations are 50 miles apart, estimated strike locations are usually within 1/2 to 1 kilometer of the actual location. These data are bound by the following coordinates: Latitude: 31.335 to 36.999 degrees Longitude: -109.048 to -103.006 degrees  

sev003_lightning_1986_01241995.txt Data for SEV003. sev003_lightning_1986_01241995.txt column , http://sev.lternet.edu/sites/default/files/data/sev-003-9/sev003_lightning_1986_01241995_1.txt 1986-01-01 1986-12-31 Year Year The year in which the data were collected. date YYYY Julian Day Jul_Day Interval of time in days since the beginning of the year. Day of the year data collected. date DDD Time Time A 12 digit time value for hours, minutes, seconds and thousandths of seconds; e.t., 01:58:24.854. Time basis is Mountain Standard Time. date hh:mm:ss.s Latitude Latitude Angular distance of a place north or south of the earth's equator. decimal degrees latitude or longitude 0.001 real Longitude Longitude Angular distance of a place east or west of the meridian at Greenwich, England. decimal degrees latitude or longitude 0.001 real Magnitude Magnitude Current kiloAmperes real Number Strokes Num_Strokes Represents the number of return strokes in a flash. Count real Qualifier Qualifier Additional information about the lightning strike string A means an accurate strike T stands for two: assigned when only two stations are used in triangulating strike, and strikes is not a 'B' or 'O' strike. 'T' code was not assigned prior to Julian day 198 (17 July 1989). B stands for a baseline strike; assigned when strike occurs in a straight line between two stations (only), and location determined by relative signal strengths. O stands for overrange; assigned when one of the detection stations was saturated. 'O' code not assigned prior to Julian day 198 (17 July 1989).