Water body skin temperature-surface temperature synchronous measuring device and method for calibrating satellite remote sensing by measuring device

Abstract

The invention discloses a water body skin temperature-surface temperature synchronous measuring device which comprises at least one temperature measuring stick, an A/D converter and a processor. The upper segment and lower segment of the temperature measuring stick are respectively provided with multiple skin layer temperature probes and surface layer temperature probes which are arranged along the length direction of the temperature measuring stick in equal intervals. The skin layer temperature probes and surface layer temperature probes are electrically connected with the processor on the processor via the A/D converter. The temperature measuring stick is further provided with multiple pressure sensors. The invention also provides a method for calibrating satellite remote sensing by the measuring device. The method comprises the following steps: step one, temperature measurement is performed on a water body skin layer at the same location by adopting the measuring device and a thermal imaging device; step 2, calibrating transmission is performed on the thermal imaging device; and step 3, on-orbit calibrating is performed on the satellite remote sensing by the imaging device. Contact type measurement can be performed on an atmosphere bottom layer, the water body skin layer and an upper surface layer synchronously by the measuring device so that measurement accuracy is greatly enhanced.

Description

technical field [0001] The invention relates to ocean measurement technology, in particular to a device for synchronously measuring the temperature of the bottom layer of the atmosphere, the cortex of a water body and the upper surface layer and an on-orbit calibration method for a satellite thermal infrared sensor through the device. Background technique [0002] Sea surface temperature (SST) is one of the most important physical parameters of the ocean, and it is also one of the main marine ecological environment parameters. SST has wide application value in many fields such as sea-air interaction, global climate change, mesoscale ocean process, water mass and marine ecological environment research, ocean numerical simulation, and coastal thermal pollution evaluation. After decades of development, satellite thermal infrared remote sensing technology has become the most important means of sea surface temperature detection. Satellite sensors can measure the skin temperature ...

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Problems solved by technology

On the other hand, the temperature measured by remote sensing is the cortex of seawater, while the seawater temperature observed on site is actually the body temperature of the surface layer at a depth of 0.3 to 1.0 meters or even 5 meters below the water surface. The synchronization of data is also a problem that needs to be considered when verifying the results of remote sensing inversion. In short, the measurement method of on-site SST is difficult to meet the verification requirements of remote sensing SST

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