1 / 8

Roughness Effect on IR Emissivity

3 rd IR/MW Emissivity Group Meeting (sep. 04, 2008). Roughness Effect on IR Emissivity. Sungwook Hong, Fuzhong Weng, and Banghua Yan. Outline. • Concept • Physical Model • Results • Summary. Concept. Reflectance : specular + diffuse component => Reduced Specular. Physical Model.

gunnar
Download Presentation

Roughness Effect on IR Emissivity

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 3rd IR/MW Emissivity Group Meeting (sep. 04, 2008) Roughness Effect on IR Emissivity Sungwook Hong, Fuzhong Weng, and Banghua Yan

  2. Outline • Concept • Physical Model • Results • Summary

  3. Concept Reflectance : specular + diffuse component => Reduced Specular

  4. Physical Model * Ω: Roughness Effect ( Ω = 1 for specular surface) It can be converted as follows: where

  5. * Test results (1)

  6. a. Ω = 0.5 * Test results (2):Applying to IASI Observation b. Ω = 0.5

  7. Other Approach 1) R(rough) = ρ(θ,σ/λ)·R0(specular)

  8. Summary •Topic : Roughness Effect in IR frequency • Results : - Roughness Effect ↑ vs. Emissivity↓ (or vice versa) - Roughness Effect < 5% for IR frequency • Future work : -Test using the various satellite observation ex) over ocean using AVHRR

More Related