An in-situ measurement device for albedo

Abstract

The utility model discloses a kind of water-leaving albedo in-situ measuring devices, including triangular support, floating assembly and measuring assembly;The floating assembly includes first float ball, second float ball and floating ring;The measuring assembly includes downlink irradiance probe, radiance probe and uplink irradiance probe;The downlink irradiance probe is fixed on the end of the intersection of the leg of triangular support, for measuring downlink irradiance E d ;Radiance probe is fixed on the end below the intersection of the leg of triangular support;Radiance probe lower end is fixed with first light shield cone;The triangular support of floating ring one end is fixed with uplink irradiance probe;The uplink irradiance probe lower end is fixed with second light shield cone;The bottom of first light shield cone and second light shield cone is immersed in water body;Radiance probe and uplink irradiance probe are located above water surface respectively, and water-leaving radiance L w And water-leaving irradiance E w It is directly measured by radiance probe and uplink irradiance probe respectively.

Description

Technical Field

[0001] This utility model belongs to the field of water body monitoring technology, specifically a device for in-situ measurement of water albedo. Background Technology

[0002] Sea surface albedo (α) is a key parameter in climate models and air-sea coupled models for assessing air-sea interface radiative transfer. However, current parameterization schemes for sea surface albedo contain significant uncertainties, primarily because the contribution of water-leaving radiation is generally ignored or underestimated, i.e., water-leaving albedo (α) w ). α w Contributed directly by backscattered radiation from water, it is a function of the water's inherent optical properties and is also influenced by biological optical parameters such as the concentration of suspended particulate matter (turbidity) and chlorophyll a in the water. Currently, due to the lack of α... w Direct measuring equipment, α w The data is primarily obtained by assuming a bidirectional distribution of radiation from the water surface, using satellite or measured remote sensing reflectance (R0). rs Inversion calculations or estimations are performed. The lack of relevant direct measurement equipment further limits the separation of water-leaving radiation contributions from sea surface upwelling irradiance, making it impossible to capture α... w The subtle characteristics of changes in water composition make it even more difficult to accurately assess the relative contributions of surface reflection and water-free radiation to sea surface albedo.

[0003] Sea surface albedo (α) is the sea surface upflow irradiance (E). u ) and downward irradiance (E d The ratio of the two irradiances can be obtained in situ by directly measuring the upward and downward irradiances using two irradiance meters. The upward irradiance E... u Solar radiation reflected by the sea surface (E r ) and water-leaving radiation contributed by water scattering (E w α is composed of... Compared to sea surface reflection, water-leaving radiation contains information about the internal composition of the water body. For example, high-turbidity water bodies have strong scattering, which can significantly increase water-leaving radiation; increased content of organic components such as chlorophyll a and colored dissolved organic matter (CDOM) may increase water absorption, thus leading to a decrease in water-leaving radiation. Therefore, α... w Accurate measurement of albedo is crucial for explaining the spatiotemporal variability of sea surface albedo in different water bodies, especially in optically complex nearshore waters. However, limitations exist in the measurement of α... w Systematic study of spatiotemporal variations and in-situ α w The lack of measurement means that traditional parameterization schemes generally ignore albedo (α). w =E w / E d The contribution of ) leads to a systematic bias in the quantitative characterization of albedo in high-scattering water bodies. Utility Model Content

[0004] The purpose of this invention is to provide an in-situ measurement device for water-leaved albedo, which can measure the downward irradiance E through a downward irradiance probe. d The water irradiance E can then be directly measured using an upward irradiance probe. w Then according to the formula α w =E w / E d The albedo was calculated.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An in-situ measurement device for water-free albedo includes a tripod, a floating assembly, and a measuring assembly. The floating assembly includes a first float, a second float, and a floating ring, respectively fixed to the ends of the three legs of the tripod, allowing the tripod to float on the water. The measuring assembly includes a downward irradiance probe, a radiance probe, and an upward irradiance probe. The downward irradiance probe is fixed to the upper end of the intersection point of the tripod legs and is used to measure the downward irradiance E. d The radiance probe is fixed to the lower end of the intersection of the legs of the tripod; a frustum-shaped first light-shielding cone is fixed to the lower end of the radiance probe; an upward irradiance probe is fixed to the tripod at one end of the floating ring; a frustum-shaped second light-shielding cone is fixed to the lower end of the upward irradiance probe; the bottoms of both the first and second light-shielding cones are submerged in water; the radiance probe and the upward irradiance probe are respectively located above the water surface, and the distance between the radiance probe and the water surface is less than 10cm. The radiance L above the water is directly measured by the radiance probe and the upward irradiance probe respectively. w and water irradiance E w .

[0007] Furthermore, the bottom diameter of the first light-shielding cone is 5cm, and the height of the first light-shielding cone is 10cm; the bottom radius of the second light-shielding cone is 21.7cm, the height of the second light-shielding cone is 7cm, and the angle between the inclined surface of the second light-shielding cone and the axis is 70°.

[0008] Furthermore, a turbidity probe for monitoring water turbidity is fixed on the triangular bracket at one end of the first float.

[0009] Furthermore, a chlorophyll probe for monitoring the concentration of chlorophyll a in the water is fixed on the triangular bracket at one end of the second float.

[0010] Furthermore, an anemometer for measuring wind speed is provided at the upper end of the upward irradiance probe.

[0011] Furthermore, the tripod is equipped with a data transmission device; the data transmission device is communicatively connected to the downlink irradiance probe, irradiance probe, uplink irradiance probe, turbidity probe, chlorophyll probe, anemometer, and external data receiving device, respectively, and transmits the monitoring data of the downlink irradiance probe, irradiance probe, uplink irradiance probe, turbidity probe, chlorophyll probe, and anemometer to the external data receiving device through the data transmission device.

[0012] After adopting the above technical solution, this utility model has the following beneficial effects: 1) It pioneers an in-situ direct measurement technology of water-leaving albedo, separating the contribution of surface reflection to upward irradiance and directly obtaining the sea surface albedo contributed by water scattering; 2) It dynamically suppresses and corrects shadow interference, and optimizes the design of the floating component and the first and second shading cones to minimize α. w The measured shadow error is eliminated to the greatest extent possible by combining Monte Carlo simulation; 3) Integrate bio-optical element sensors such as chlorophyll a concentration and turbidity to realize α w In-situ dynamic correlation analysis with the composition of water substances, and synchronous observation through modular design to ensure consistency of multi-parameter measurements; 4) Optimized layout effectively eliminates the interference of shadows on each component's measurement, reducing system measurement errors. As a comprehensive, lightweight in-situ measurement device for water albedo, this utility model has made a breakthrough in solving the technical problem of accurate in-situ measurement of water albedo in different water bodies. Simultaneously, through the synchronous measurement of bio-optical parameters, it helps to evaluate the influence of different water components on water albedo. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a top view of the structure of this utility model;

[0015] Figure 3 This is a front view of the first light-shielding cone of this utility model;

[0016] Figure 4 This is a top view of the first light-shielding cone of this utility model;

[0017] Figure 5 This is a front view of the second light-shielding cone of this utility model;

[0018] Figure 6 This is a top view of the second light-shielding cone of this utility model.

[0019] The reference numerals in the figure are as follows:

[0020] 1. Triangular support; 2. Floating assembly; 20. First float; 21. Second float; 22. Floating ring; 3. Measuring assembly; 30. Downward irradiance probe; 31. Radiance probe; 32. Upward irradiance probe; 33. First shading cone; 34. Second shading cone; 35. Turbidity probe; 36. Chlorophyll probe; 37. Anemometer; 38. Data transmission device. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Please see Figures 1 to 6 An in-situ measurement device for water albedo includes a triangular support 1, a floating assembly 2, and a measuring assembly 3. The floating assembly 2 includes a first float 20, a second float 21, and a floating ring 22, respectively fixed to the ends of the three legs of the triangular support 1, thereby buoying the triangular support 1 on the water. The measuring assembly 3 includes a downward irradiance probe 30, a radiance probe 31, and an upward irradiance probe 32. The downward irradiance probe 30 is fixed to the upper end of the intersection point of the legs of the triangular support 1 and is used to measure the downward irradiance E. d The radiance probe 31 is fixed at the lower end of the intersection of the legs of the triangular bracket 1; a frustum-shaped first light-shielding cone 33 is fixed at the lower end of the radiance probe 31; an upward irradiance probe 32 is fixed on the triangular bracket 1 at one end of the floating ring 22; a frustum-shaped second light-shielding cone 34 is fixed at the lower end of the upward irradiance probe 32; the bottoms of the first light-shielding cone 33 and the second light-shielding cone 34 are both submerged in water; the radiance probe 31 and the upward irradiance probe 32 are respectively located above the water surface, and the distance between the radiance probe 31 and the upward irradiance probe 32 and the water surface is less than 10cm. The radiance L above the water is directly measured by the radiance probe 31 and the upward irradiance probe 32 respectively. w and water irradiance E w .

[0023] like Figures 1 to 6 As shown, the bottom diameter of the first light-shielding cone 33 is 5cm, and the height of the first light-shielding cone 33 is 10cm; the bottom radius of the second light-shielding cone 34 is 21.7cm, the height of the second light-shielding cone 34 is 7cm, and the angle between the inclined surface of the second light-shielding cone 34 and the axis is 70°.

[0024] like Figure 1 and Figure 2 As shown, a turbidity probe 35 for monitoring water turbidity is fixed on a triangular bracket 1 at one end of the first float 20.

[0025] like Figure 1 and Figure 2 As shown, a chlorophyll probe 36 for monitoring the concentration of chlorophyll a in the water is fixed on the triangular bracket 1 at one end of the second float 21.

[0026] like Figure 1 and Figure 2 As shown, an anemometer 37 for measuring wind speed is provided at the upper end of the upward irradiance probe 32.

[0027] like Figure 1 and Figure 2 As shown, a data transmission device 38 is installed on the triangular support 1. The data transmission device 38 is communicatively connected to the downlink irradiance probe 30, irradiance probe 31, uplink irradiance probe 32, turbidity probe 35, chlorophyll probe 36, anemometer 37, and an external data receiving device. The data transmission device 38 transmits the monitoring data of the downlink irradiance probe 30, irradiance probe 31, uplink irradiance probe 32, turbidity probe 35, chlorophyll probe 36, and anemometer 37 to the external data receiving device.

[0028] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0030] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0031] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.

[0032] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0033] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0034] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An in-situ measurement device for water albedo, characterized in that: The system includes a tripod (1), a floating assembly (2), and a measuring assembly (3). The floating assembly (2) includes a first float (20), a second float (21), and a floating ring (22) fixed to the ends of the three legs of the tripod (1), which float the tripod (1) on the water. The measuring assembly (3) includes a downlink irradiance probe (30), a radiance probe (31), and an uplink irradiance probe (32). The downlink irradiance probe (30) is fixed to the upper end of the intersection point of the legs of the tripod (1) and is used to measure the downlink irradiance E. d The radiance probe (31) is fixed at the lower end of the intersection of the legs of the triangular bracket (1); a first truncated cone (33) is fixed at the lower end of the radiance probe (31); an upward irradiance probe (32) is fixed on the triangular bracket (1) at one end of the floating ring (22); a second truncated cone (34) is fixed at the lower end of the upward irradiance probe (32); the bottoms of the first truncated cone (33) and the second truncated cone (34) are both submerged in the water; the radiance probe (31) and the upward irradiance probe (32) are respectively located above the water surface, and the distance between the radiance probe (31) and the upward irradiance probe (32) and the water surface is less than 10cm. The radiance L above the water is directly measured by the radiance probe (31) and the upward irradiance probe (32). w and water irradiance E w .

2. The in-situ measurement device for water albedo as described in claim 1, characterized in that: The bottom diameter of the first light-shielding cone (33) is 5cm and the height of the first light-shielding cone (33) is 10cm; the bottom radius of the second light-shielding cone (34) is 21.7cm and the height of the second light-shielding cone (34) is 7cm, and the angle between the inclined surface of the second light-shielding cone (34) and the axis is 70°.

3. The in-situ measurement device for water albedo as described in claim 1, characterized in that: A turbidity probe (35) for monitoring water turbidity is fixed on a triangular bracket (1) at one end of the first float (20).

4. The in-situ measurement device for water albedo as described in claim 1, characterized in that: A chlorophyll probe (36) for monitoring the concentration of chlorophyll a in the water is fixed on a triangular bracket (1) at one end of the second float (21).

5. The in-situ measurement device for water albedo as described in claim 1, characterized in that: The upper end of the upward irradiance probe (32) is equipped with an anemometer (37) for measuring wind speed.

6. The in-situ measurement device for water albedo as described in any one of claims 1-5, characterized in that: The tripod (1) is equipped with a data transmission device (38); the data transmission device (38) is connected to the downlink irradiance probe (30), irradiance probe (31), uplink irradiance probe (32), turbidity probe (35), chlorophyll probe (36), anemometer (37) and external data receiving equipment respectively, and transmits the monitoring data of the downlink irradiance probe (30), irradiance probe (31), uplink irradiance probe (32), turbidity probe (35), chlorophyll probe (36) and anemometer (37) to the external data receiving equipment through the data transmission device (38).

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