Accumulated snow sublimation amount measuring instrument

Abstract

The invention provides an accumulated snow sublimation amount measuring instrument. The accumulated snow sublimation amount measuring instrument comprises a base part, a snow storage tray, a weighing sensor and a snow cutting assembly. The base part is used for being supported on the ground. The snow storage tray is provided with a snow storage groove and connected with the base part through a weighing sensor. The weighing sensor can obtain the weight of the snow storage tray and the accumulated snow and can transmit weight parameters to the background terminal in real time, the weight parameters are stored and calculated and analyzed through the background terminal, and finally data related to accumulated snow sublimation are obtained. The snow cutting assembly comprises a speed reducer force arm and a cutter, the speed reducer force arm is connected with the base part, the cutter is connected with the speed reducer force arm, and the cutter is attached to the peripheral face of the snow storage disc; the speed reducer force arm is used for driving the cutter to rotate around the snow storage disc so as to cut accumulated snow attached to the peripheral face and separate the accumulated snow from the peripheral face. Continuous automatic monitoring can be achieved, the accuracy of monitoring data is high, the application value is high, and generalizability is achieved.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a snow cover sublimation measuring instrument. Background technique [0002] Ice and snow have unique radiation and thermodynamic properties. As an important part of the cryosphere, its distribution accounts for about 20% of the global area. Ice and snow sublimation is a common hydrological phenomenon in ice and snow-covered areas. It is an important factor affecting regional and global water balance, energy balance and atmospheric circulation. It has an important impact on ecology, hydrology, landform and climate, and is considered an indicator of climate change. Under the background of global warming, the reduction of snowfall in winter and the advance of snowmelt period promote the sublimation / evaporation of snow, which has a significant adverse impact on the utilization of water resources in the basin. Since the sublimation of ice and snow is highly unbalanced in time...

AI Technical Summary

Problems solved by technology

[0004] 1) When snowfall occurs in winter, the snow layer that has been thawed during the day and frozen at night is easy to form a snow shell, so that the snow on the lysimeter will be connected with the surrounding snow, and the weight change measured by the load cell cannot represent the lysimeter. The amount of sublimation of the snow with the size of the caliber of the meter makes the measurement error very large

Inconvenient to use

[0005] 2) The existing lysimeter has a large weighing range, but the snow sublimation is smaller than the soil vegetation evapotranspiration, which requires higher accuracy and resolution for the lysimeter weighing system

Images