EarthCARE L1 Products for Cal/Val Users

This EarthCARE collection is restricted, and contains the following data products:

· Level 1b: Fully Calibrated and Geolocated Instrument Science Measurements

Level 1b data represents the fully processed, calibrated, and geolocated measurements from EarthCARE's instruments. Each measurement is aligned with the native instrument grid. For the Broadband Radiometer (BBR), measurements are also spatially integrated to various groundpixel sizes.

· Level 1c (MSI only): MSI Level 1b Data Interpolated to a Common Spatial Grid

Specifically for the Multi-Spectral Imager (MSI), Level 1c data involves interpolating Level 1b measurements onto a standardized spatial grid that is consistent across all MSI bands. This grid closely matches the spacing used in MSI Level 1b data.

· Level 1d: Joint Standard Grid (JSG) for All Instruments with ECMWF Meteorological Fields.

Level 1d data provides a spatial grid to enable easy collocation and synergistic use of the data from all EarthCARE instruments, named the "joint standard grid." Additionally, this level incorporates ECMWF (European Centre for Medium-Range Weather Forecasts) meteorological fields limited to the EarthCARE swath, enabling comprehensive analysis and modeling of atmospheric conditions within the satellite's coverage area.

本 EarthCARE 数据集属于受限范围，包含以下数据产品：

· 第 1b 级：完全校准并地理定位的仪器科学测量值
第 1b 级数据代表了 EarthCARE 仪器经过完全处理、校准和地理定位的测量值。每一项测量值均与原仪器网格对齐。对于宽带辐射计（BBR），测量值还按地面像素大小进行空间积分。

· 第 1c 级（仅 MSI）：将 MSI 第 1b 数据插值至通用空间网格
特别针对多光谱成像仪（MSI），第 1c 级数据涉及将第 1b 级测量值插值到一致的空间网格上，该网格适用于所有 MSI 波段，且与 MSI 第 1b 级数据所使用的间距相匹配。

· 第 1d 级：所有仪器共用的标准网格（JSG）与 ECMWF 气象场联合
第 1d 级数据提供了一个空间网格，以便轻松实现所有 EarthCARE 仪器数据的对齐和协同利用，被称为‘联合标准网格’。此外，此级别还融入了 ECMWF（欧洲中期天气预报中心）气象场，限于 EarthCARE 传感器覆盖范围，从而能够对卫星覆盖区域内的大气条件进行综合分析和建模。

搜集汇总

背景与挑战

背景概述

该数据集是EarthCARE卫星的Level 1产品集合，专为校准和验证用户设计，包含Level 1b（完全校准和地理定位的仪器测量）、Level 1c（MSI数据插值到共同网格）和Level 1d（联合标准网格与ECMWF气象场）数据。数据集聚焦于大气科学领域，涵盖气溶胶、云和辐射等主题，但访问受限，仅限特定授权用户使用。