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A new method to avoid PPP in data evaluation

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Chinese Physics B 2004年第4期13卷 428-433页

作者：陈振鹏孙业英 TsinghuaUniversity Beijing100084China

The Peelle Pertinent Puzzle (PPP) has been studied systematically. The results obtained by using several proposed methods to deal with a sample of 6Li(n, t) are compared with each other. The cause of PPP occurrence has been *** according to the relative extent of discrepancy'. The method is able to produce the best result and should be used to avoid the PPP at first.

关键词： general least squares PPP data evaluation

Ⅲ data evaluation——A Code for Supplement of Gamma Production data to Evaluated Neutron data

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中国核科技报告 1994年第S3期 49-53页

作者： Zhao Zhixiang Liu Tong( Chinese Nuclear data Center, IAE )

A code for supplement of gamma production data to evaluated neutron data is developed on the basis of semi-empirical formulae. The major functions of the code are described.A box diagram and a computational example ar... 详细信息

关键词： code data evaluation A Code for Supplement of Gamma Production data to Evaluated Neutron data

evaluation of the Madden–Julian Oscillation in Fengyun-3B Polar-Orbiting Satellite Reprocessed OLR data

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Journal of Meteorological Research 2022年第6期36卷 931-946页

作者： Hainan GONG Wanchun ZHANG Ling SUN Zizhen DONG Peng ZHANG Lin WANG Wen CHEN Renguang WU Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100190 National Satellite Meteorological Centre China Meteorological AdministrationBeijing 100081 School of Earth Sciences Yunnan UniversityKunming 650500 School of Earth Sciences Zhejiang UniversityHangzhou 310058

The present study compares the spatial and temporal characteristics of the Madden-Julian Oscillation(MJO)in Fengyun-3B(FY-3B)polar-orbiting satellite reprocessed outgoing longwave radiation(OLR)data and NOAA OLR data during *** spatial distributions of climatological mean and intraseasonal standard deviation of FY-3B OLR during boreal winter(November-April)and boreal summer(May-October)are highly consistent with those of NOAA *** FY-3B and NOAA OLRs display highly consistent features in the wavenumber-frequency spectra,the occurrence frequency of MJO active days,the eastward propagation of MJO along the equator,and the interannual variability of MJO according to diagnoses using the all-season multivariate EOF *** results indicate that the FY-3B OLR produced by the polar-orbiting satellites is of high quality and worthy of global application.

关键词： Fengyun-3B outgoing longwave radiation Madden–Julian Oscillation multivariate empirical orthogonal function data evaluation

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evaluation of FY-3B Reprocessed OLR data in the Asian–Australian Monsoon Region during 2011–2019:Comparison with NOAA OLR

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Journal of Meteorological Research 2021年第6期35卷 964-974页

作者： Lin LIU Wanchun ZHANG Wen CHEN Renguang WU Lin WANG State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081 National Satellite Meteorological Center China Meteorological AdministrationBeijing 100081 Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100190 School of Earth Sciences Zhejiang UniversityHangzhou 310027

The present study evaluates spatial and temporal characteristics of the Fengyun-3 B(FY-3 B)’s outgoing longwave radiation(OLR)data based on NOAA OLR data and the GPCP(Global Precipitation Climatology Project)precipitation data over the Asian-Australian region during *** terms of climatological distribution patterns and interannual standard deviation,FY-3 BOLR are quite consistent with NOAA OLR,with annual and seasonal pattern correlation coefficients all exceeding *** are some discrepancies in the OLR magnitude between FY-3 B and NOAA,especially for the OLR climatology;the climatological OLR from FY-3 B are systematically larger than those from NOAA over the whole study *** addition,examination of the temporal correlation coefficients between OLR and precipitation over the Asian-Australian monsoon(AAM)region reveals that both of the OLR datasets have captured the widespread negative correlation with precipitation,and FY-3 BOLR exhibits a stronger relationship to precipitation over ***,FY-3 BOLR exhibits better responses to the precipitation anomalies over India during the extreme El Nino and La Nina *** results suggest that the FY-3 B OLR dataset is of high quality and worthy of further global application.

关键词： Fengyun-3B outgoing longwave radiation precipitation Asian–Australian monsoon data evaluation

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Use of a Land Surface Model to Evaluate the Observed Soil Moisture of Grassland at the Tongyu Reference Site

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Advances in Atmospheric Sciences 2008年第6期25卷 1073-1084页

作者：丹利季劲钧刘辉志 Regional Center for Temperate East Asia and Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric Physics Chinese Academy of Sciences State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences

A land surface model driven by the continuous three-year observed meteorological data with a time interval of 30 minutes at the Tongyu station, a reference site of the Coordinated Enhanced Observing Period （CEOP）, was used to evaluate the observation bias of soil moisture （SM） data and analyze the variation of SM at different time scales. The saline-alkaline soil of the grassland at the Tongyu site makes the measured SM too high, especially in boreal summer of 2003-05. The simulated annual mean SM has the lowest value in 2004 and its three-year variation corresponds to the change of precipitation, whereas the observation shows the increasing trend from 2003 to 2005. Compared to the variation range between -60% and 40% for the anomaly percentage of the simulated daily mean SM during May-October of 2004, the measured data show the higher values more than 40%. The magnitude of the variation trend of the observed daily mean SM in 2003 and 2005 is generally consistent with the simulation. The largest deficiency for the soil moisture observation of the grassland is the overestimated value in the drought year with less precipitation. The simulated monthly mean SM has the lowest value in March due to the large contribution of evaporation relative to precipitation and this phenomenon can not be reproduced in the observation.

关键词： soil moisture variation trend Tongyu reference site AVIM data evaluation

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