Data Package Metadata View Summary

Soil volumetric water content calculated from neutron hydroprobe data along the LTER-I transects (control and fertilized) at the Jornada Basin LTER, 1986-ongoing

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210012002.2
Title:	Soil volumetric water content calculated from neutron hydroprobe data along the LTER-I transects (control and fertilized) at the Jornada Basin LTER, 1986-ongoing
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This data package contains volumetric water content measurements calculated from soil neutron hydroprobe data collected on the permanent LTER-I transects located at Chihuahuan Desert Rangeland Research Center (CDRRC) in the Jornada Basin of southern New Mexico, USA. The control and treatment transects are parallel to each other and are 2.7 km in length extending from the middle of the College Playa to the foot of Mt. Summerford. The treatment transect was treated annually with ammonium nitrate fertilizer (NH4NO3 at 10g N/m2/yr) until 1987. Measurement stations are located at 30 meter intervals along each transect, and there are neutron probe access tubes located every station on the control transect (n=89) and at every fifth station at the treatment transect (n=19). Measurements were taken at 5 depths using a neutron probe (CPN Model 503DR Hydroprobe). Measurements were taken at 5 depths using a neutron probe to a maximum depth of 110 cm. Neutron probe readings taken in 6 lysimeters along transects are also included. This dataset consists of the calculated water content (cm3 water/cm3 soil) obtained by applying site-specific calibration equations to data derived from the thermalized neutron counts found in EDI packageID knb-lter-jrn.210001001. Measurements were taken at 2 week intervals from April 1982 to 1987 and monthly thereafter. Data collection for this study is ongoing.
Publication Date:	2019-11-05

Time Period

Begin:

1982-04-30

End:

2019-04-30

People and Organizations
Contact:	Data Manager(Jornada Basin LTER) [ email ]
Contact:	Vivoni, Enrique (Arizona State University) [ email ]
Creator:	Wierenga, Peter (University of Arizona)
Creator:	Virginia, Ross (Dartmouth College)
Creator:	Duniway, Michael (USGS)

Data Entities
Data Table Name:	Soil VWC calculated from neutron probe counts, multiple depths, along JRN LTER-I transects
Description:	Soil VWC calculated from neutron probe counts, multiple depths, along JRN LTER-I transects
Other Name:	Hydroprobe measuring procedures
Description:	Hydroprobe measuring procedures
Other Name:	Hydroprobe history and comments
Description:	Hydroprobe history and comments

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210012002/2/7f694fb0a9f6f16e5bbc59c30f1d49d3
Name:	Soil VWC calculated from neutron probe counts, multiple depths, along JRN LTER-I transects
Description:	Soil VWC calculated from neutron probe counts, multiple depths, along JRN LTER-I transects
Number of Records:	56530
Number of Columns:	14

Table Structure

Object Name:

jrn012002_TransectHydroprobeVWC.csv

Size:

4787946 bytes

Authentication:

7b9e17872ffda47bb933feab126adff0 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

date

zone

site

transect_id

station_num

location_orig

tube

week

swc_30cm

swc_60cm

swc_90cm

swc_110cm

swc_130cm

serial_no

Definition:

Date of data collection

LTER-I transects [I only]

Study site [TRAN = LTER-I Transect or LTWS = LTER Weather station]

Transect and treatment id code [C, T, CL, TL, STD, WET, DRY]

Station number along transect or within treatment

Location of probe transect [original notation: C## = control transect station; T## = treatment transect station; CL#/TL# = mini-lysimeter; STD = standard reading at soil surface; WET = wet standard reading; DRY = dry standard reading]

Tube ID number that corresponds to treatment and station number [hundreds: 100 = control transect, 200 = treatment transect; tens & ones = station #; fraction = located after station indicated]

LTER-I week number [Week 18 begins 04/30/1982]

soil water content at 30cm depth (cm3 water/ cm3 soil)

soil water content at 60cm depth (cm3 water/ cm3 soil)

soil water content at 90cm depth (cm3 water/ cm3 soil)

soil water content at 110cm depth (cm3 water/ cm3 soil)

soil water content at 130cm depth (cm3 water/ cm3 soil)

Last 4 digits of hydroprobe serial number

Storage Type:

date

string

float

string

float

string

Measurement Type:

dateTime

nominal

ratio

nominal

ratio

nominal

Measurement Values Domain:

Format	YYYY-MM-DD
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	I
Definition	LTER-I transect
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	TRAN
Definition	LTER-I Control and Treatment transects
Source

Code Definition

Code	LTWS
Definition	Jornada LTER Weather Station site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	STD
Definition	Standard reading at soil surface with short plastic block inserted in end of neutron probe.
Source

Code Definition

Code	C
Definition	Control Transect
Source

Code Definition

Code	CL
Definition	Control Transect mini-lysimeter
Source

Code Definition

Code	TL
Definition	Treatment Transect mini-lysimeter (Nitrogen fertilizer)
Source

Code Definition

Code	T
Definition	Treatment Transect (Nitrogen fertilizer)
Source

Code Definition

Code	DRY
Definition	Dry standard reading at 60 cm soil depth
Source

Code Definition

Code	WET
Definition	Wet Standard reading at 60 cm depth in water barrel
Source

Unit	number
Type	real
Min	1
Max	91

Definition

Unit	number
Type	real
Min	10
Max	993

Unit	number
Type	natural
Min	18
Max	1948

Unit	cubicCentimetersPerCubicCentimeters
Type	real
Min	0
Max	0.62

Unit	cubicCentimetersPerCubicCentimeters
Type	real
Min	0
Max	0.69

Unit	cubicCentimetersPerCubicCentimeters
Type	real
Min	0
Max	0.71

Unit	cubicCentimetersPerCubicCentimeters
Type	real
Min	0
Max	0.71

Unit	cubicCentimetersPerCubicCentimeters
Type	real
Min	0
Max	9

Definition

Last 4 digits of hydroprobe serial number

Missing Value Code:

Code	NA
Expl	no station number for standard (STD) measurements

Code	NA
Expl	no tube number for standard (STD) measurements

Code	NA
Expl	Missing value

Code	NA
Expl	Missing value

Code	NA
Expl	Missing value

Code	NA
Expl	Missing value

Code	NA
Expl	Missing value

Code	NA
Expl	unknown serial number

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Non-Categorized Data Resource

Name:

Hydroprobe measuring procedures

Entity Type:

unknown

Description:

Hydroprobe measuring procedures

Physical Structure Description:

Object Name:

standalone_hydroprobe_protocol.pdf

Size:

606692 bytes

Authentication:

ffcbf3bde97da67226bc87269e483327 Calculated By MD5

Externally Defined Format:

Format Name:

unknown

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210012002/2/5e82137da49f54f0bd19d6e0608aa700

Non-Categorized Data Resource

Name:

Hydroprobe history and comments

Entity Type:

unknown

Description:

Hydroprobe history and comments

Physical Structure Description:

Object Name:

probe_his.txt

Size:

200751 bytes

Authentication:

ee53ec252e3f83fab14dd1f6c2763ecf Calculated By MD5

Externally Defined Format:

Format Name:

unknown

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210012002/2/d18c8a22ca0ee315ba5edae3dcd0a9b4

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
JRN Dataset Keywords	Hydrology, Climate, Soils, and Atmosphere, long-term, LTER I
Jornada Place Names	LTER-I Transect, CDRRC
Jornada Project Names	study 012, LTER-I Transect
LTER Core Area	Inorganic Nutrients
LTER Controlled Vocabulary	soil, soil water content, soil moisture, soil water, neutron probe

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package

Description:

See the pdf document ("standalone_hydraprobe_protocol.pdf") attached to this package for detailed information on the methods for this study. These methods are summarized below.

Monthly soil water content measurements are made at 5 depths (where possible) at probe access tubes along the LTER-I Treatment and Control transects. The parallel transects are 2.7 km long and extend from College Playa to the base of Mt. Summerford. Each transect is 30 meters wide with a 45-meter buffer zone between each transect. The Treatment transect was treated annually with NH4NO3 in a concentration equal to 10g N/m2 until 1987. On 17 July 1986 the Control Transect was aerially fertilized by mistake with granular NH4NO3 instead of the Treatment Transect. As a result of this mistake, the Treatment Transect was subsequently fertilized by hand with a team of 12 persons using mechanical spreaders. The study site has a history of moderate to heavy livestock grazing for 100 years before 1982.

Soil water content measurements were made at each of the 89 access tubes on the Control transect (n=89) and at every 5th station on the nitrogen fertilized Treatment transect (n= 19). Each aluminum access tube is installed 1 meter from the station marker and 30 meters apart from the next tube. Measurements are taken at 30cm, 60cm, 90cm, 110cm, and 130cm when possible. In addition to these measurements, mini-lysimeters readings and standards are taken throughout each transect. If fewer depths were measured, the missing depths have a zero in the raw data set of count values. The occurrence of any other zero is a missed depth reading. The hydroprobe currently used is Hydroprobe Model CPN503DR (Campbell Pacific Nuclear, Pacheco, CA) with data logger. This probe has a 50 mCi 241 Am-Be source and a 3He detector. Neutrons encountering hydrogen become thermalized. The detector totals the returning thermalized neutrons over a 16 second sample time which is the raw count value displayed. The raw count value is then substituted into the proper regression equation to calculate cubic centimeters of water per cubic centimeter of soil.

See "probe_his.txt" file for probe history; e.g., problems associated with measurements.

People and Organizations

Creators:

Individual:	Peter Wierenga
Organization:	University of Arizona

Individual:	Ross Virginia
Organization:	Dartmouth College
Id:	https://orcid.org/0000-0002-0890-0981

Individual:

Michael Duniway

Organization:

USGS

Email Address:

mduniway@usgs.gov

Id:

https://orcid.org/0000-0002-9643-2785

Contacts:

Individual:

Data Manager

Organization:

Jornada Basin LTER

Email Address:

datamanager.jrn.lter@gmail.com

Individual:

Enrique Vivoni

Organization:

Arizona State University

Email Address:

vivoni@asu.edu

Id:

https://orcid.org/0000-0002-2659-9459

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period

Begin:

1982-04-30

End:

2019-04-30

Geographic Region:

Description:

Bajada_West

Bounding Coordinates:

Northern:	32.5427713	Southern:	32.46722784
Western:	-106.8514602	Eastern:	-106.7294433

Geographic Region:

Description:

Basin_Floor

Bounding Coordinates:

Northern:	32.7494871	Southern:	32.47317259
Western:	-106.8728831	Eastern:	-106.6927163

Project

Parent Project Information:

Title:

No project title to report

Personnel:

Individual:

Enrique Vivoni

Organization:

Arizona State University

Email Address:

vivoni@asu.edu

Id:

https://orcid.org/0000-0002-2659-9459

Role:

Principal Investigator

Funding:

No funding to report

Maintenance

Maintenance:

Description:	Ongoing. Data collected monthly, though the data package may be updated less frequently.
Frequency:

Other Metadata

Copyright 2024 Environmental Data Initiative. This material is based upon work supported by the National Science Foundation under grants #2223103 and #2223104. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Please contact us with questions, comments, or for technical assistance regarding this web site or the Environmental Data Initiative. Please read our privacy policy to know what information we collect about you and to understand your privacy rights.

EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

Data Package Metadata View Summary

Soil volumetric water content calculated from neutron hydroprobe data along the LTER-I transects (control and fertilized) at the Jornada Basin LTER, 1986-ongoing

Data Entities

Data Table

Non-Categorized Data Resource

Non-Categorized Data Resource

Data Package Usage Rights

Keywords

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

Recently Added

Recently Updated

Data Package Metadata View Summary

Soil volumetric water content calculated from neutron hydroprobe data along the LTER-I transects (control and fertilized) at the Jornada Basin LTER, 1986-ongoing

+/- Data Entities

Data Table

Non-Categorized Data Resource

Non-Categorized Data Resource

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

+/- Maintenance

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance