The Nebraska Mesonet ! "#$%"&'%( )'* + ,&- - - PowerPoint PPT Presentation

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Sep 04, 2022 293 likes •482 views

The Nebraska Mesonet ! "#$%"&'%( )'* + ,&- ./#"'* "&'$"$.&0)+ ! "$1)12+ '$&"- 3&"''10+ "$.&4 #15.''1# 6789:;8<=> The Nebraska State Climate Office

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The Nebraska Mesonet

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The Nebraska State Climate Office

MISSION Deliver science-based weather and climate information for decision-making. OBJECTIVES ! Provide high quality and timely services. ! Engage stakeholders to understand needs. ! Operate a statewide weather network. !"#$%&!'%()&

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The Nebraska Mesonet

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MISSION Monitor weather and climate conditions of Nebraska. History ! Began in 1981 with 5 stations. ! Currently at 69 stations. ! Transition from ag network to long-standing environmental monitoring program. Transition from ag network

GOTHENBURG 2NW MICRONET A CITY 3NW NEBRASKA CITY 3NW SMOUTH 2SE

NEBRASKA MESONET

A T T H E N E B R A S K A S T A T E C L I M A T E O F F I C E

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Observations

! Air temperature (2m) ! Humidity (2m) ! Wind speed (3m) ! Wind direction (3m) ! Warm season precipitation ! Solar radiation ! Soil temperature

10cm, bare ground

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Observations

! Air temperature (2m) ! Humidity (2m) ! Wind speed (3m) ! Wind direction (3m) ! Warm season precipitation ! Solar radiation ! Soil temperature

10cm, bare ground

! Soil moisture

10, 25, 50, 100 cm, grass

! Barometric pressure

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Observations

! Air temperature (2m) ! Humidity (2m) ! Wind speed (3m) ! Wind direction (3m) ! Warm season precipitation ! Solar radiation ! Soil temperature

10cm, bare ground

! Soil moisture, temp

5, 10, 20, 50, 100 cm, grass

! Barometric pressure ! 10-m temperature, humidity, wind

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Station siting

Considerations ! Rural ! Grass cover ! Limited obstructions ! Long-term ! Non-irrigated

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Value of a state Mesonet

! State of the art equipment (Campbell Scientific, Li-Cor, RM Young). ! Regular calibration services. ! Annual maintenance. Sensor upgrades as needed. ! Quality controlled data. ! Near real-time available (every 5 minutes, transitioning to 1 minute). ! Data products available. ! Non-mesonet dataset visualization.

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Soil moisture monitoring genesis

Goal: improved water supply monitoring for drought mitigation ! Installation began in 1998 with Stevens-Vitel Hydra-Probe. ! Depths of 10cm, 25cm, 50cm, 100cm. ! U.S. Bureau of Reclamation grant funding. ! Reliability of Vitel sensors became an issue.

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Soil moisture monitoring developments

! Transition to Dynamax ML2x Theta Probes in 2001. ! Many still in place, running successfully for > 10 years. ! To align with federal standards,

bserving depths for all new

installations are: 5cm,10cm, 20cm, 50cm, 100cm. ! Current sensor is the ML3.

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Soil moisture data integrity issues

When bad things happen to good data: ! Sensor goes bad. ! Wire is chewed. ! Crack in the soil column. ! Sensor is dug up. ! Animal burrow. ! Lightning strike. The two best forms of quality control are: ! Regular site visits. ! A person looking at the data.

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Soil moisture data integrity issues

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Soil moisture data integrity issues

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Soil moisture data products

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Data utility - applications

! State agency briefings. ! Hydrologic support. ! Assess drought conditions with local input.

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Data utility - research

! Land-surface – atmosphere interactions. ! Mesoscale weather modeling. ! Drought assessment. ! Model and remote sensed verification. ! Vadose zone hydrology.

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Climate updates

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