LUQ LTER DATA SETS DOCUMENTATION FORM

ON-LINE VERSION

A DATA SET is a series of observations collected by the same methodology. Each data set should have documentation sufficient for someone unfamiliar with the research to replicate the study. Data sets may be broken into subsets (data files) that are discrete in space and time, in that order. The documentation for a data set should include all spatial and temporal subdivisions of the data.

(Data, Abstract, Methods, Variables)

NOTES:

PERSON(S) COMPLETING THIS FORM: E-MAIL ADDRESS:

Douglas Schaefer

DSchaef53@hotmail.com

Eda C. Melendez-Colom

emelend@ites.upr.edu


DATA SET IDENTIFIER: USDC NOAA's National Climatic Data Center (NCDC) daily precipitation

PROJECT TITLE: Meteorology - Puerto Rico (USDC - LTER)

PROJECT DESCRIPTION: During LUQ LTER 1 (from 1988 to 1994) several meteorological data sets where obtained from other agencies for comparison. In 1993, historical daily precipitation and temperature data were obtained from the United States Department of Commerce NOAA NCDC from 5 stations, four of which are located at the East and South of the El Yunque Mountain (Fajardo, Río Blanco Lower and Upper, Pico del Este), and another at the North West (Río Grande). Historical streamfall data from the USGS were also obtained, but not summarized. These data can be obtained from the Puerto Rico USGS Web site at http://waterdata.usgs.gov/nwis.

Monthly sums of precipitation (P, in cm) and monthly averages (T, in oF) of the maximum and minimum air temperatures from NOAA NCDC were calculated and became part of the LUQ LTER data sets. Data are summarized through July 1992. Non-LUQ LTER users should obtain the daily data from this agency http://www.ncdc.noaa.gov).  Station details are as follows:

Table 1. Station location and elevation (NOTE: For recent data visit the National Climatic Data Center web site at: http://www.ncdc.noaa.gov/oa/climateresearch.html)

Name of Location Longitude Latitude Elevation (in meters)

Period Covered

Type of record: P = precipitation or T= Temperature
Pico del Este 65° 45' 18° 15' 1051 1969-1992 P,T
Rio Grande 65° 49' 18° 21' 107 1956- 1984 P
Rio Blanco Upper 65°47' 18° 16' 439 1955-1974 P
Rio Blanco Lower 65° 47' 18° 14' 35 1955-1992 P
Fajardo 65° 39' 18° 20' 12 1931- 1992

P,T

LTER CORE AREAS: (Annotate all that apply)

Primary Productivity

LEF LTER 1 RESEARCH TOPIC: (Annotate all that apply)

Environmental Monitoring

We define a data file as a component of a data set. A data set can have only one data file or more. Basically, different data files have different data structures or format.
DATA SET FILES (SUBSETS):
NOTE: For recent data visit the National Climatic Data Center web site at: http://www.ncdc.noaa.gov/oa/ncdc.html

Data File No.

Data File Identifier

On-Line Filename

Starting Date

Periodicity of sample

End Period

1 Fajardo ppt_faj.txt January 1931 monthly July 1992
2 Pico del Este ppt_pico.txt October 1969 monthly June 1992
3 Rio Blanco Lower ppt_rbl.txt January 1955 monthly July 1992
4 Rio Blanco Upper ppt_rbu.txt January 1955 monthly March 1974
5 Rio Grande El Verde ppt_rgv.txt February 1956 monthly December 1987

RESEARCH LOCATION: Fajardo (663657), Pico del Este (666992), Rio Blanco Lower (668144), Rio Blanco Upper (668145), Rio Grande El Verde (668245). For more details see Table 1 in "Abstract".

INVESTIGATORS:

PRINCIPAL INVESTIGATORS E-MAIL address

Douglas Schaefer

DSchaef53@hotmail.com

OTHER RESEARCHERS E-MAIL address

CONTACT PERSONS E-MAIL address Phone Number (Include area code)

Eda Meléndez

emelend@ites.upr.edu

(787)764-0000 Ext.4943

SOURCE OF FUNDING (SPONSOR): NSF-LTER

DATA SET ABSTRACT:
Daily precipitation at five stations in or near the LEF have been compiled by the National Climate Data Center. Here I present monthly sums of precipitation (P, in cm). Data are summarized through July 1992.

DATA SET METHODS: See NOAA NCDC Web site at http://www.ncdc.noaa.gov

REFERENCES:
http://www.ncdc.noaa.gov

CROSS-REFERENCES (other data sets related to this one): LTERDBAS 70: USDC NOAA's National Climatic Data Center (NCDC) daily precipitation ; LTERDBAS 71: USDC NOAA's National Climatic Data Center (NCDC) daily maximum temperature; LTERDBAS 72: USDC NOAA's National Climatic Data Center (NCDC) daily minimum temperature;

SAMPLE LOCATION: N/A

STORAGE SITES: Terrestrial Ecology Division, Data Mngr.'s Cabinet DM333-01, Drawer #4, on floppy

INVESTIGATOR'S ASSIGNED KEYWORDS: Weather, climate, meterology, meterological, monitoring, modeling

LEF LTER OFFICIAL KEYWORDS (See table): EAST PEAK, Q RIO BLANCO, RIO GRANDE, OTHER PLOT, RIVER, CLIMATE, OTHER PUBLICATION FORMAT

PUBLICATIONS: http://www.ncdc.noaa.gov

DISSEMINATION: UNRESTRICTED

REASONS TO RESTRICT DATA IN THIS DATA SET BEYOND ITS TWO YEAR POLICY PERIOD*:

*WILL HAVE TO BE APPROVED BY LTER PRINCIPAL INVESTIGATORS: J. ZIMMERMAN, A. LUGO , D.J. LODGE

SITES DESCRIPTIONS:

Geographical positional system (GPS) Coordinates for each location: (NOTE: For recent data visit the National Climatic Data Center web site at: http://www.ncdc.noaa.gov/oa/ncdc.html)

location

Latitude

Longitude

Pico del Este 18° 15' 65° 45'
Rio Grande 18° 21' 65° 49'
Rio Blanco Upper 18° 16' 65°47'
Rio Blanco Lower 18° 14' 65° 47'
Fajardo 18° 20' 65° 39'

VARIABLES (ATTRIBUTES):

FILE NAME OR #ABOVE (all in which the variable appears)

1 2 3

ABBREVIATION (as it appears on the data file)

YEAR MONTH CM

NAME OF VARIABLE

Year of measurement Month of measurement Monthly precipitation in centimeters

DEFINITION OF VARIABLE

A four digit number representing the year when the measurements were taken. When data waqs not available the entire record will be missing. A 1-2 digit number representing the month when the measurements were taken. When data waqs not available the entire record will be missing. The sum of all daily precipitation values for a specific month/year. When data waqs not available the entire record will be missing.

UNIT

    centimeter

PRECISION

    .0001

RANGE OR LIST OF VALUES

1931, ..., 1992 1,..., 12  

DATA TYPE

integer integer

decimal

MISSING DATA CODES

     

COMPUTATIONAL METHODS:
Variable Name Formula

Monthly precipitation in centimeters

SUM(PPT1,...PPTn) where n = {28, 29, 30, 31} of the same year

sObservations: Monthly summaries were derrived from the United States Department of Commerce NOAA NCDC' daily data. Non-LTER users should obtain the daily data from this agency http://www.ncdc.noaa.gov).

FOR DATA MANAGER USE ONLY

DATE OF LAST REVIEW: January 8, 2009
DATE OF LAST ENTRY:
STAGE OF DATA SET MANAGEMENT (dates):
RECEIVED: September 19, 1996
CATALOGUED: 1996
ON-LINE: May 2, 1997
REVIEWED BY RESEARCHER: September 19, 1996
FILING MEDIA:
NAME OF DOCUMENTATION FILE: LTERDB70.FM*
NAME OF DATA FILE: ppt_AAAA.txt where AAA = {faj, pico, rbl, rbu, rgv}
NAME OF ON - LINE CATALOG: LTERDBAS
RECORD #: 70
DOCUMENT TYPE: Data set (magnetic media)
PRIORITY TO BE ENTERED: N/A

Rev. date of this form: 12 March 2002