humidity

Meteorology Data from the Sevilleta National Wildlife Refuge, New Mexico (1988- present)

Abstract: 

 This file contains hourly meteorological data that were collected from a network of 10 permanent weather stations on the Sevilleta National Wildlife Refuge.

Data set ID: 

1

Core Areas: 

Additional Project roles: 

324

Keywords: 

Purpose: 

To monitor meteorological conditions across the Sevilleta and surrounding areas through time.

Data sources: 

sev1_meteorology_1988-1995.txt
sev1_meteorology_1996-2000.txt
sev1_meteorology_2001-2005.txt
sev1_meteorology_2006-2010.txt
sev1_meteorology_2011-2015.txt

Methods: 

Sampling Design

Stations were located across the Sevilleta and surrounding areas to cover the entire spatial and elevational extent of the refuge. They were also generally located adjacent to other pertinent study locations such as plant and animal monitoring studies.

Measurement Techniques

Automated weather stations

Each weather station includes a 3 m tripod tower, on which is mounted most of the monitoring equipment. This equipment includes an enclosure housing a datalogger and power supply. On the tripod are mounted an anemometer and wind vane, a pyranometer, and a solar radiation shield that encloses a combination temperature and relative humidity sensor. Other attached sensors include: a precipitation gauge, soil temperature sensors and soil moisture potential sensors.

Instrumentation: 

* Manufacturer: Campbell Scientific Inc.* Component: Datalogger - Measurement and Control Module* Model Number CR10* Reference Manuals: CR10 Measurement and Control Module            Campbell Scientific Inc.* Manufacturer: Campbell Scientific Inc.Measurement Techniques: Automated weather stations Each weather station includes a 3 m tripod tower, on which is mounted most of the monitoring equipment. This equipment includes an enclosure housing a datalogger and power supply. On the tripod are mounted an anemometer and wind vane, a pyranometer, and a solar radiation shield that encloses a combination temperature and relative humidity sensor. Other attached sensors include: a precipitation gauge, soil temperature sensors and soil moisture potential sensors.* Component: Temperature/Relative Humidity Sensor* Model Number 207* Reference Manuals:         * Manufacturer: Campbell Scientific Inc.* Component: Temperature/Relative Humidity Sensor* Model Number HMP45C* Reference Manuals:* Manufacturer: MET-ONE* Component: Cup Anemometer* Model Number 14A* Reference Manuals:* Manufacturer: MET-ONE* Component: Wind Vane* Model Number 24A* Reference Manuals:* Manufacturer: LI-COR* Component: Pyranometer* Model Number 200SZ* Reference Manuals:* Manufacturer: Texas Electronics* Component: Rain Gauge* Model Number TE525 mm* Reference Manuals:* Manufacturer: Campbell Scientific Inc.* Component: Soil Temperature Probe* Model Number 108* Reference Manuals:    * Manufacturer: Campbell Scientific Inc.* Component: Soil Temperature Probe* Model Number 107* Reference Manuals:        * Manufacturer: Campbell Scientific Inc.* Component: Soil Moisture Block * Model Number 227* Reference Manuals:        * Manufacturer: Vaisala* Component: Barometer* Model PTB101B* Reference Manuals:       

Additional information: 

These data were collected from a network of 10 permanent weather stations on the Sevilleta National Wildlife Refuge. Station 40 has been in operation since the middle of 1987; Stations 41-44 were installed in the early part of 1989; Station 45 was put into operation on 26 Jan 1990 (hour 15); Station 46 was put into operation on 31 Aug 1990 (hour 17); and Station 1 was put into test operation on 29 Dec 1991 (hr 12) and official data recording started on 01 Jan 92 (hr 01). A new station (#48) was established during 1998 (on Oct 1 1998) at a site designated as Savana (initially called Blue Springs. Station 49 was installed in the Five Points area in 1999 and named Five Points. Another new station was established in 2001 at a new core study site designated as Blue Grama and given a station ID number of 50. These data have been run through a filtering program which replaces all obviously out-of-range values with -999.000's and flags questionable values for checking by data manager.

Bowen Ratio Evapotranspiration Data at the Sevilleta National Wildlife Refuge, New Mexico (1996-1999)

Abstract: 

This file contains data collected from 1996-1999 at a Bowen ratio tower adjacent to the Deep Well Meteorological Station at Deep Well (Station 40). The Bowen ratio method employs a method of measuring the temperature and vapor pressure gradient over a vegetation canopy to quantify evapotranspiration from that canopy.

Core Areas: 

Data set ID: 

79

Additional Project roles: 

87
88

Keywords: 

Purpose: 

The data was collected to identify the daily patterns of evapotranspiration from the surrounding area.

Data sources: 

sev079__climatebowen_1996-1999_20120105.txt

Methods: 

Measurement Techniques:

The Bowen ratio method measures the gradient of temperature and moisture above a typical canopy. In conjunction with measuring incoming net radiation, this method can partition the energy into soil heating, atmospheric heating (specific heat) and evaporation as latent heat.

A Bowen ratio station includes a 3 m tower on which is mounted most of the following sampling equipment: an enclosure, which houses a datalogger, and a gas flow system which directs air from upper and lower arms of the station to the cooled mirror hygrometer. On the tripod are upper and lower arms with mountings for thin wire thermocouples and intakes for air samples. A set of 4 temperature probes are buried in the top 10 cm of the soil with readings taken at 2 and 8 cm. One pair of probes is located under a clump of grass while a second is in unvegetated soil. Two soil heat flux plates are buried at a depth of 10 cm, again one under vegetation and one in the open. A net radiometer is mounted on a pipe about 1 m above the soil surface.  A wind sentry, which includes both an anemometer and wine vane, is mounted at a height of 3 m. 

Instrumentation: 

Manufacturer: Campbell Scientific Inc.

Components: 21X Data logger

Net Radiometer

Fine Wire Thermocouples

Hygrometer

Soil Heat Flux plates

Averaging soil temperature thermocouple probe

Wind Sentry set

Model Number: na

Reference Manuals: na

Modifications and Adjustments: na

Maintenance: 

April 28 1997 Started Bowen Station

No data day 224 1340 to day 227 1240

No data day 245 1300 to day 252 1100

No data day 267 1240 to day 274 1120

Oct 17 1997 Bowen Station turned off

Additional information: 

When the Samples/Data were Collected:

The data were collected spring, summer, and fall of each year when the instrument was operating properly. For 1996 the period of collection was Julian day 1 (Jan 1) through 183. For 1997 the period of collection was Julian day 118 (Apr 27) through 290 (Oct 17) with some missing periods due to equipment problems - see mainentance log. For 1998 the period of collection was Julian day 84 (Mar 25) through 274 (Oct 1). For 1999 the period of collection was Julian day 99 (Apr 9) through 123 (May 3) and day 147 (May 27) through day 315 (Nov 11). Data were measured over 20 minute periods and means, totals, and instantaneous readings were output at the hour, 20 min. and 40 min. past the hour for the preceeding 20 minutes.

Where the Data were Collected:

Sevilleta LTER Project Area Description

McKenzie Flats, Deep Well Meteorological Site

Latitude 34.3586 Longitude -106.6911

Study Area Description:

The study area is about halfway between Black Butte and Five Points. It is about 200 m west of the road site

Location Description:

The area around the station can be classified as desert grassland, dominated by black grama (Bouteloua eriopoda) and blue grama grass (B. gracilis), with lesser amonts of various drop seeds and sacatons (Sporobolus spp.), purple three-awn (Aristida purpurea), and Pleuraphis jamesii. The sub-shrub snakeweed (Gutierrezia sarothrae) is common during wet years and there are a few creosote bushes (Larrea tridentata) and four-wing salt bushes (Atriplex canescens) in the vicinity.

Descriptors Soil:

Berino Series: The soils in the Berino series are classified as fine-loamy, mixed, thermic Typic Haplargids. These form well drained, moderately permeable soils formed in alluvial and eolian material. They are on bajadas, plains, and broad fan terraces.

Slope/Aspect: Approximately 1-2%, westerly aspect.

Vegetation Community: Mixed-species desert grassland.

Terrain/Physiography: McKenzie Flats is a broad, nearly flat grassland plain between the Los Pinos Mountains and the breaks on the east side of the Rio Grande.

Geology/Lithology: Deep (20,000 ft) alluvial and eolian deposits. Caliche layer varies between 10 cm to 1 m in depth.

Hydrology - surface/groundwater: Surface water is present only during rainfall events (particularly summer thunderstorms). Area is considered a "run-on" plain for watersheds of the Los Pinos Mountains. No major arroyos are present on the study area, although Palo Duro Canyon borders the southern part of the study area.

Size: McKenzie Flats encompasses an area of approximately 50 square miles.

Elevation: 1600 m (5249 ft)

Climate (general): The McKenzie Flats area of the Sevilleta NWR has one of the LTER weather stations located in the central part of the flats. This is the Deep Well station. For climate details and data, consult the Sevilleta Meteorology databases. 

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