A new species of genus Megophrys from Gaoligong Mountains, Yunnan Province, China is described. Phylogenetic analyses based on mitochondrial DNA and nuclear all clustered the as an independent clade nested into subgenus Panophrys. The smallest genetic distance 16S rRNA gene between its congeners was 3.0%. could be identified by a combination following characters: moderate body size (SVL 31.0–34.8 mm in males); vomerine ridge weak, teeth absent; dorsal skin relatively smooth; tongue slightly...

Himawari-8 (H8), as a geostationary satellite, observing the full disk image of earth per 10 min, is very powerful tool to investigate atmospheric aerosol temporal variations. The advanced himawari imager (AHI) onboard H8 has several spectral bands similar with those Moderate Resolution Imaging Spectroradiometer (MODIS). Aerosol optical depth (AOD) thus possible be retrieved from AHI data using dark target (DT) method MODIS. Based on statistics study infrared these two satellite instruments,...

Abstract Aerosol mixtures composed of coarse and fine particles occur frequently in metropolitan areas the world, especially developing countries. Beijing, China, Kanpur, India, are both Asian monsoon regions experience strong aerosol loading because increased economic activities, vehicles, urbanization. Observations originating from Robotic Network (AERONET) have played a vital role field study. In order to understand variations optical, physical properties component composition over...

Abstract. Climate change assessment, especially model evaluation, requires a better understanding of complex refractive indices (CRIs) atmospheric aerosols – separately for both fine and coarse modes. However, the widely used aerosol CRI obtained by global Aerosol Robotic Network (AERONET) corresponds to total-column particles without separation This paper establishes method separate CRIs based on AERONET volume particle size distribution (VPSD), optical depth (AOD) absorbing AOD (AAOD). The...

The 3 km Dark Target (DT) aerosol optical depth (AOD) products, 10 DT and Deep Blue (DB) AOD products from the Collection 6 (C6) product data of Moderate Resolution Imaging Spectroradiometer (MODIS) are compared with Sun-sky Radiometer Network (SONET) measurements at Song Mountain in central China, where ground-based remote sensing properties still very limited. seasonal variations AODs significant region, higher spring summer lower autumn winter. Annual mean (0.55 µm) vary range 0.5–0.7,...

The fine-mode fraction (FMF) of aerosol optical depth (AOD) is a key parameter that represents the proportion fine particles relative to total aerosols in atmosphere. However, comparison ground-based measurements, FMF still difficult retrieve from satellite observations, as attempted by Moderate-resolution Imaging Spectroradiometer (MODIS) algorithm. In this paper, we introduce retrieval based on Polarization and Anisotropy Reflectances for Atmospheric Science coupled with Observations Lidar...

The current understanding of columnar aerosol optical and microphysical properties different regions seasons in China is insufficient due to the lack measurements. Aiming improve descriptions models over China, this paper presents a systematic characterization sites based on newly developed remote sensing network for observation, Sun-sky radiometer Observation NETwork (SONET). One year ground-based solar sky radiation measurements four typical SONET (Beijing–urban-industrial site,...

Columnar mass concentrations of aerosol components over the Arctic are estimated using microphysical parameters derived from direct sun extinction and sky radiance measurements Aerosol Robotic Network. optical, microphysical, chemical radiative properties show that aerosols dominated by fine mode particles, especially for high load cases. The average optical depth (AOD) selected sites in sampling period is approximately 0.08, with 75% composed particles. fraction mostly exceeds 0.9 when AOD...

Ecosystem services (ES) are pivotal in assessing environmental health and societal well-being. Focusing on Lake Dianchi Basin (LDB), China, this research evaluated the Integrated Service Value (IESV) across two decades (2000 - 2020), utilizing remote sensing multiple statistical datasets. The analysis incorporates Landscape (LSV), Carbon Sequestration (CSV), Net Primary Productivity (NPPV). We employed Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) Markov...

Ecosystem services are pivotal in assessing environmental health and societal well-being. Focusing on Lake Dianchi Basin (LDB), China, our research evaluated the IESV (Integrated Service Value) from 2000 to 2020, utilizing remote sensing multiple statistical datasets. The analysis incorporates LSV (Landscape Value), CSV (Carbon Sequestration NPPV (Net Primary Productivity Value). results show that exhibited an expansion of low-yield zones near urban areas, contrasted by NPPV’s growth...

Geostationary satellites observe the earth surface and atmosphere with a short repeat time, thus, providing aerosol parameters high temporal resolution, which contributes to air quality monitoring. Due limited information content in satellite data, coupling between signals received from atmosphere, accurate retrieval of multiple over land is difficult. With strategy taking full advantage measurement information, here we propose neural network AEROsol framework for geostationary (NNAeroG),...

This work presents the variation of aerosol characteristics obtained before, during and after haze episode in October, 2010 Beijing, a highly industrialized city which located northwest North China Plain with more than 21 million inhabitants. Surface solar irradiance was measured by pyranometer showed great differences between hazy non-hazy days. Aerosol scattering coefficients were integrated nephelometer influence relative humidity on coefficient investigated means Weather Research...

Polarization observation of sky radiation is the frontier approach to improve remote sensing atmospheric components, e.g., aerosol and clouds. The polarization calibration ground-based Sun-sky radiometer basis for obtaining accurate degree linear (DOLP) measurement. In this paper, a DOLP method based on laboratory polarized light source (POLBOX) introduced in detail. Combined with CE318-DP radiometer, scheme measurement established spectral range 440–1640 nm. Based results network,...

Landsat satellites have the longest history of making global-scale Earth observations at medium spatial resolution any series and been widely used in various remote-sensing fields. However, many applications, including large-area or long-term land-cover monitoring, need reflectance data that had accurate atmospheric correction carried out. In this research, a MODIS-based per-pixel procedure was developed employed to produce surface (SR) product. A total 510 Landsat-8 Operational Land Imager...

As a result of years monitoring the ecological resiliency natural areas and cities, it has become clear that is both important often feasible to implement environmental restoration in conjunction with ongoing processes landscape change development urbanization. Ecological spatiotemporal evolution studies can objectively reveal ecosystems external disturbances. assessment also help planners understand regional spatial differentiation patterns provided data support for planning. In this paper...

An improved aerosol retrieval algorithm based on the Advanced Multi-angular Polarized Radiometer (AMPR) is presented to illustrate utility of additional 1640-nm observations for measuring optical depth (AOD) over land using look-up table approaches. Spectral neutrality polarized surface reflectance visible short-wavelength infrared bands verified, and measurements corrected atmospheric effects are used estimate at shorter wavelengths. The AMPR Beijing-Tianjin-Hebei region in north China...

The Cimel new technologies allow both daytime and nighttime aerosol optical depth (AOD) measurements. Although the AOD calibration protocols are well established, accurate simple is still a challenging task. Standard lunar-Langley intercomparison methods require specific conditions in terms of atmospheric stability site condition. Additionally, lunar irradiance model also has some known limits on its uncertainty. This paper presents method that transfers direct-Sun constant, V0,Sun, to...

Haze can cause serious atmospheric pollution affecting air quality, human health and even global climate. In order to investigate aerosol columnar size distribution water uptake during haze evolution, we analyse ground-based observations an extreme winter case at Beijing on 12 January 2013 (haze day) as compared those registered 9 (non-haze day). We study the evolution of using retrievals from a CIMEL sun-sky radiometer Aerosol Robotic Network (AERONET). Our results show that while hourly...

Abstract We conducted community interviews and field surveys to determine the distribution population of Endangered Shortridge's capped langur Trachypithecus shortridgei , threats species, in Dulong Nu River valleys north-western Yunnan Province, China. found that c. 19 groups T. reside valley, mostly located southern portion valley. According interview observational records Gaoligong Mountains west River, 12 individuals no were observed. Family consist one adult male, 2–3 females up five...