ELITE SLWR: global 1km 5-min SLDR at SIN Grid-Terra (2003_228-243)

The Essential thermal Infrared remoTe sEnsing (ELITE) product suite currently has four types of products, including land surface temperature (LST: clear-sky and all-sky), emissivity (NBE: narrowband emissivity; BBE: broadband emissivity; and spectral emissivity), the component of surface radiation and energy budget (SLUR: surface longwave upwelling radiation; SLDR: surface longwave downward radiation SLDR; SLNR: surface longwave net radiation), and the component of Earth’s radiation budget (OLR; outgoing longwave radiation; RSR: reflected solar radiation). The spatial-temporal resolutions of the ELITE products are mainly determined by the employed satellite data sources. For more information about ELITE products, please refer to the website (https://elite.bnu.edu.cn).

This dataset is ELITE surface longwave downward radiation (SLDR) product at 1km spatial resolution and 5-min temporal resolution. It is provided on a Sinusoidal grid and ranges from 2000 to 2022 (continuously updated). This dataset was generated from the Moderate Resolution Imaging Spectrometer (MODIS) data, ELITE emissivity product and MERRA2 reanalysis data using the algorithms developed by Cheng et al. (2016), Cheng et al. (2017) and Yang and Cheng. (2020).

This is the ELITE SLDR product in 2003 (DOY: 228-243). Please click here to download the ELITE SLDR product in 2003 (DOY: 244-258).

Dataset Characteristics:

Spatial Coverage: Global

Temporal Coverage: 2003-08-16 ~ 2003-08-31

Spatial Resolution: 1 km

Temporal Resolution: 5-min

Data Format: h5

Projection: Sinusoidal

Scale: 0.05

Offset: -1000

Citation (Please cite these papers when using the data):

Cheng, J., & Liang, S. (2016). Global estimates for high spatial resolution clear-sky land surface upwelling longwave radiation from MODIS data. IEEE Transactions on Geoscience and Remote Sensing, 54, 4115-4129

Cheng, J., Liang, S., Wang, W., & Guo, Y. (2017). An efficient hybrid method for estimating clear-sky surface downward longwave radiation from MODIS data. Journal of Geophysical Research: Atmospheres, 122, 2616-2630

Yang, F., & Cheng, J. (2020). A framework for estimating cloudy sky surface downward longwave radiation from the derived active and passive cloud property parameters. Remote Sensing of Environment, 248, 111972

核心热红外遥感（Essential Thermal Infrared Remote Sensing，缩写ELITE）产品套件目前包含四类产品，分别为：地表温度（land surface temperature，缩写LST：晴空与全天空地表温度）、发射率（包含窄带发射率narrowband emissivity，缩写NBE；宽带发射率broadband emissivity，缩写BBE；以及光谱发射率）、地表辐射与能量收支组分（包括地表长波上行辐射surface longwave upwelling radiation，缩写SLUR；地表长波下行辐射surface longwave downward radiation，缩写SLDR；地表长波净辐射surface longwave net radiation，缩写SLNR），以及地球辐射收支组分（包括向外长波辐射outgoing longwave radiation，缩写OLR；以及反射太阳辐射reflected solar radiation，缩写RSR）。ELITE产品的时空分辨率主要由所采用的卫星数据源决定。如需了解ELITE产品的更多信息，请访问官网：https://elite.bnu.edu.cn。

本数据集为空间分辨率1km、时间分辨率5分钟的ELITE地表长波下行辐射（SLDR）产品。该产品采用正弦网格（Sinusoidal grid）投影，时间跨度为2000年至2022年（持续更新中）。本数据集基于中分辨率成像光谱仪（Moderate Resolution Imaging Spectrometer，缩写MODIS）数据、ELITE发射率产品以及MERRA2再分析资料（Modern-Era Retrospective analysis for Research and Applications, Version 2），采用Cheng等人（2016）、Cheng等人（2017）以及Yang和Cheng（2020）开发的算法生成。

本次提供的是2003年年积日（Day of Year，缩写DOY）228-243的ELITE SLDR产品。如需下载2003年年积日244-258的ELITE SLDR产品，请点击此处。

数据集特征：
空间覆盖范围：全球
时间覆盖范围：2003年8月16日 ~ 2003年8月31日
空间分辨率：1 km
时间分辨率：5分钟
数据格式：h5
投影方式：正弦投影（Sinusoidal）
缩放系数：0.05
偏移量：-1000

引用文献（使用本数据集时请引用以下论文）：
1. Cheng J, Liang S. 2016. Global estimates for high spatial resolution clear-sky land surface upwelling longwave radiation from MODIS data[J]. IEEE Transactions on Geoscience and Remote Sensing, 54: 4115-4129.
2. Cheng J, Liang S, Wang W, Guo Y. 2017. An efficient hybrid method for estimating clear-sky surface downward longwave radiation from MODIS data[J]. Journal of Geophysical Research: Atmospheres, 122: 2616-2630.
3. Yang F, Cheng J. 2020. A framework for estimating cloudy sky surface downward longwave radiation from the derived active and passive cloud property parameters[J]. Remote Sensing of Environment, 248: 111972.