For the Measurement of Heat Fluxes and Evaporation at Large Scales Path averaged measurement of sensible heat fluxes Integrated data logger with GPS Range 100 m to 4.5 km Digital data processing Stand-alone operation Real-time data display

Introduction Heat fluxes and evaporation at the Earth’s surface are of great importance to the fields of meteorology and hydrology. Sensible heat flux is the transfer of heat between the Earth’s surface and the air above, due to a temperature difference between them. The direction of this flux can be seen by measuring temperature at two heights. Latent heat flux is the result of the evaporation of water or transpiration by vegetation. For this reason, this flux is often referred to as evapo-transpiration (ET). Both fluxes are major components of the Earth’s surface energy budget. Accurate continuous...

LAS MkII large aperture scintillometer is designed to offer easy installation, configuration and operation, requiring only limited maintenance. The LAS MkII can be installed and configured using its built-in display and key-pad without the need for any extra equipment. This prevents the inconvenience of carrying additional instruments to the site of installation. The LAS MkII has a built-in data logger and digital outputs for direct PC connection. Real time measurements are shown on the display. The Cn² data is also available as an analogue output to be recorded using virtually any type of data...

Specifications LAS MkII Path length / Aperture diameter Scintillation bandwidth Carrier frequency Features Interface options Digital RS-232/422 Analog output 0 to 2.4 V Instrument control and data display Built-in display and key-pad or remote via digital interface Heating system Programmable lens heater (receiver) Self-regulating lens heater (transmitter) Data processing Internal processing of Cn², free sensible heat flux and other parameters Built-in data logger with GPS antenna for time and location External sensor connection GPS + optional sensor kit: wind speed, temperature and pressure Software...