Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing最新文献

The TOVS Pathfinder Path A data set TOVS Pathfinder路径A数据集

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472390

J. Susskind

{"title":"The TOVS Pathfinder Path A data set","authors":"J. Susskind","doi":"10.1109/COMEAS.1995.472390","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472390","url":null,"abstract":"TOVS (TIROS Operational Vertical Sounder) is the operational temperature-moisture profile sounding system on the NOAA polar orbiting satellites, comprised of HIRS2, a 20 channel IR sounder, MSU, a 4 channel microwave sounder, and SSU a 3 channel IR pressure modulated stratospheric temperature sounder. The authors have analyzed data from NOAA 9 for Dec. 1985-Dec. 1986 and NOAA 10 for Dec. 1986-Dec. 1988 as part of the Pathfinder project. Products, produced twice daily, on a 1/spl deg//spl times/1/spl deg/ latitude-longitude grid, include land/ocean surface skin temperature, atmospheric temperature and humidity profile, total atmospheric O/sub 3/ column burden, cloud top height and amount, outgoing longwave radiation and longwave cloud radiative forcing, and precipitation estimate. A brief description of the methodology to analyze the data is given, stressing the need for simultaneous IR and microwave observations. Results showing interseasonal and interannual variability and the effects of El Nino are shown. Water vapor distribution is validated compared to radiosondes and shows considerable skill in the interannual variability sense. Cloud fields are validated indirectly by their use in the computation of OLR, which shows almost perfect agreement with the ERBE OLR product. Cloud fields are compared with those produced by ISCCP, and significant qualitative differences in cloud height distribution are shown. Perhaps the most important scientific finding is the very close positive relationship between the distribution of tropical upper tropospheric water vapor and precipitation in space and time.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125436602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

New directions in coastal and ocean remote sensing 沿海和海洋遥感的新方向

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472357

P. R. Schwartz

引用次数: 0

Analysis of atmospheric water vapor measurements using a Raman lidar 利用拉曼激光雷达分析大气水汽测量

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472322

S. Rajan, S. Mathur, C. R. Philbrick

引用次数: 1

Measurements and implications for combined radar-passive microwave rainfall profiling techniques 雷达-无源微波联合降雨剖面技术的测量和意义

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472371

J. Turk, F. Marzano, M.A. Farrar, E. Smith

{"title":"Measurements and implications for combined radar-passive microwave rainfall profiling techniques","authors":"J. Turk, F. Marzano, M.A. Farrar, E. Smith","doi":"10.1109/COMEAS.1995.472371","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472371","url":null,"abstract":"An upcoming NASA satellite platform, the Tropical Rainfall Measuring Mission (TRMM), represents the first opportunity to incorporate both multifrequency passive microwave and active radar measurements in its retrieval algorithms. The TRMM microwave imager (TMI) includes many of the same passive channels as the current Special Sensor Microwave Imager (SSMI), with the addition of a 10.7 GHz channel. The 14 GHz incoherent precipitation radar (PR) scans an across-track swath width about one-third the width of the forward-view conical TMI scan. Therefore, the radar data arrives about a minute after the TMI scan, and the PR and TMI beams view significantly different profiles in the atmosphere for a given on-Earth pixel location. During the 1992-1993 TOGA-COARE experiment in the western Pacific Ocean, a DC-8-based precipitation radar and an ER-a-based 4-channel microwave radiometer gathered data over a multitude of precipitating storm regions including the forming and mature stages of a tropical cyclone. Example imagery and vertical radar profiles are presented. These data are currently being used by the authors for vertical profiling algorithms which exploit the information contained in both the radar and radiometer. The radar data provide clues to the underlying cloud vertical structure that can be used to mitigate ambiguities in profile-based retrieval algorithms that rely upon the passive T/sub B/ alone.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123216412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of the unified retrieval approach to real DMSP sensor data over ocean and land 统一检索方法在海洋和陆地DMSP传感器真实数据中的应用

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472370

S.B. Moncet, R. Isaacs, J. Hegarty

{"title":"Application of the unified retrieval approach to real DMSP sensor data over ocean and land","authors":"S.B. Moncet, R. Isaacs, J. Hegarty","doi":"10.1109/COMEAS.1995.472370","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472370","url":null,"abstract":"A physical retrieval algorithm for the simultaneous retrieval of atmospheric temperature, water vapor and cloud liquid water as well as surface skin temperature and emissivity from microwave sensors has been developed by Moncet and Isaacs (1994, 1992). The algorithm uses a nonlinear inversion method similar to the one described by Rodgers (1976) for the inversion of the measured brightness temperatures. Climatology provides the desired inter-correlation between the various elements of the state vector. This information is used to effectively reduce the number of degrees of freedom in the problem, and therefore reduce the dependence of the solution on the first guess. Information from other sources, such as forecast models, is integrated by optimally combining it with the primary background information. Emissivity is treated by retrieving one emissivity value per sensor channel. The degree of correlation between the emissivities in each channel is specified through the first-guess error covariance matrix. This method offers more flexibility than the one proposed by Eyre (1990) and makes it possible to apply the algorithm to combinations of sensors with mixed viewing geometries and polarizations such as the DMSP microwave sensor suite. The algorithm has been tested based on simulated data and was successfully applied to limited sets of real measurements from the combined DMSP microwave sensors (SSM/T-1, T2 and SSM/I) over both ocean and land.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126466789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Multi-sensor analysis of the effects of a wildfire in an Alaskan black spruce forest 阿拉斯加黑云杉森林野火影响的多传感器分析

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472396

E. Kasischke, L. Bourgeau-Chavez, N. French

{"title":"Multi-sensor analysis of the effects of a wildfire in an Alaskan black spruce forest","authors":"E. Kasischke, L. Bourgeau-Chavez, N. French","doi":"10.1109/COMEAS.1995.472396","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472396","url":null,"abstract":"Wildfires play a central role in the ecology of boreal forests throughout the circumpolar region. Fires result in distinct and characteristic signatures on all remote sensing imagery. The large proportion of total area burned in boreal forests occurs in large fire events-the majority of area burned occurs in fires greater than 10,000 ha in size. These fires result in signatures which are not only spatially heterogeneous, but also have distinct temporal signatures. The authors present the results of a study which investigated the use of a variety of systems to monitor the effects of fire on remote sensing data collected over a large (40,000 ha) forest fire near Tok, Alaska. This fire occurred during the summer of 1991. Visible and near-IR region (AVHRR, SPOT) as well the microwave region (the ERS-1 and JERS-1 SARs) observations were made. The studies have shown that in the visible and near-IR data sets, the remotely-sensed signatures result from variations in the levels of burn intensity and patterns of vegetation regrowth. These patterns can clearly being interpreted through examination of vegetation indices derived from the AVHRR and SPOT data sets. On the other hand, the analyses of the microwave imagery collected by the ERS-1 SAR show that the spatial patterns of radar backscatter are primarily due to variations in surface roughness due to variations in burn intensity as well as variations in soil moisture, while the temporal patterns of radar backscatter are due to seasonal variations in soil moisture. The authors present examples of the remotely-sensed data sets along with ground-truth measurements which illustrate the sources of variations observed in the satellite imagery.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125756608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

M.I.M.R.: a conical scanning antenna system for a multifrequency imaging microwave radiometer design, measurements and future developments 一种针对锥形扫描天线系统的多频成像微波辐射计的设计、测量及未来发展

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472359

S. Contu, F. Marinelli

引用次数: 1

Initial results from a volume scanning three wavelength polarization lidar 体扫描三波长偏振激光雷达的初步结果

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472385

M. D. O'Brien, G. Evanisko, C. R. Philbrick

引用次数: 1

Forest structure from combined optical and microwave modeling and measurements 从光学和微波组合建模和测量森林结构

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472397

K. Ranson, J. Smith, G. Sun, J. Weishampel, R. Knox

引用次数: 3

Combined optical and microwave remote sensing measurements of the stratosphere from a balloon platform: improving our understanding of ozone photochemistry 从气球平台对平流层进行光学和微波遥感测量:提高我们对臭氧光化学的认识

Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing Pub Date : 1995-04-03 DOI: 10.1109/COMEAS.1995.472379

D.G. Johnson, W. Traub, K. Chance, K. Jucks, R. Stachnik

引用次数: 0