Matches in SemOpenAlex for { <https://semopenalex.org/work/W2001995769> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W2001995769 endingPage "693" @default.
- W2001995769 startingPage "671" @default.
- W2001995769 abstract "Improvement in forecast accuracy is expected to result from the incorporation of rain type and precipitation retrieved from the TRMM Microwave Imager (TMI) into numerical weather prediction (NWP) models, especially in the tropics, where latent heating is the main energy source of atmospheric motion. A One-dimensional Variational Method (1DVAR) was developed in the present study for the assimilation of convective and stratiform rain flags, and precipitation retrieved from TMI into a Japan Meteorological Agency (JMA) global NWP system. In order to simplify the observational operators of the 1DVAR, it was assumed that the rain flags (precipitation) were functions of total water content (divergence) alone. Using these operators, the 1DVAR sought the optimal total water content (divergence), by minimizing a cost function that consists of a background total water content (divergence) term, and observation terms for the retrieved rain flags (precipitation). The impact of the TMI rain flags and precipitation assimilation on the NWP forecasts was examined in a case study of meso-scale precipitation systems over the Indian Ocean around 06 UTC 16 July 1998. The 1DVAR made deep (mid-tropospheric) moist layers with strong (moderate) updrafts in the TMIretrieved heavy rain areas (stratiform rain areas). This assimilation enabled the NWP to spin-up heavy precipitation in correspondence with the TMI retrievals, and to maintain the heavy rain areas for 24 hours. The creation of deep moist layers was essential to maintain these heavy rain areas. The assimilation also induced model stratiform precipitation around the TMI-retrieved stratiform rain areas, although the model rain areas lasted for the first several hours only. The impacts of the assimilation were also examined by including the 1DVAR into the forecastanalysis cycle of the global NWP system for July 1998. The results show that the assimilation improved large-scale patterns of precipitation, convective and stratiform rain areas, and precipitable water content over tropical oceans. It was also found that the assimilation changed double-peak profiles of diabatic heating around inter-tropical convergence zones, into more realistic mid-tropospheric peak profiles. This change was mainly ascribable to the enhancement of tall convection and suppression of low-level convection by the 1DVAR. The Hadley circulation was strengthened (weakened) in the upper to mid- (lower-) troposphere in accordance with the changes in diabatic heating." @default.
- W2001995769 created "2016-06-24" @default.
- W2001995769 creator A5016391182 @default.
- W2001995769 creator A5021220408 @default.
- W2001995769 creator A5039447606 @default.
- W2001995769 creator A5041771802 @default.
- W2001995769 creator A5086774767 @default.
- W2001995769 creator A5060884532 @default.
- W2001995769 date "2004-01-01" @default.
- W2001995769 modified "2023-09-27" @default.
- W2001995769 title "Variational Assimilation of TMI Rain Type and Precipitation Retrievals into Global Numerical Weather Prediction" @default.
- W2001995769 cites W2054012124 @default.
- W2001995769 cites W2070181980 @default.
- W2001995769 cites W2092228172 @default.
- W2001995769 cites W2140994193 @default.
- W2001995769 cites W2150946542 @default.
- W2001995769 cites W2151895407 @default.
- W2001995769 cites W2172819965 @default.
- W2001995769 cites W2174902731 @default.
- W2001995769 cites W2176899338 @default.
- W2001995769 cites W2508487283 @default.
- W2001995769 cites W2521162043 @default.
- W2001995769 cites W321650946 @default.
- W2001995769 doi "https://doi.org/10.2151/jmsj.2004.671" @default.
- W2001995769 hasPublicationYear "2004" @default.
- W2001995769 type Work @default.
- W2001995769 sameAs 2001995769 @default.
- W2001995769 citedByCount "6" @default.
- W2001995769 countsByYear W20019957692014 @default.
- W2001995769 crossrefType "journal-article" @default.
- W2001995769 hasAuthorship W2001995769A5016391182 @default.
- W2001995769 hasAuthorship W2001995769A5021220408 @default.
- W2001995769 hasAuthorship W2001995769A5039447606 @default.
- W2001995769 hasAuthorship W2001995769A5041771802 @default.
- W2001995769 hasAuthorship W2001995769A5060884532 @default.
- W2001995769 hasAuthorship W2001995769A5086774767 @default.
- W2001995769 hasBestOaLocation W20019957691 @default.
- W2001995769 hasConcept C107054158 @default.
- W2001995769 hasConcept C127313418 @default.
- W2001995769 hasConcept C140178040 @default.
- W2001995769 hasConcept C147947694 @default.
- W2001995769 hasConcept C153294291 @default.
- W2001995769 hasConcept C205649164 @default.
- W2001995769 hasConcept C24552861 @default.
- W2001995769 hasConcept C39432304 @default.
- W2001995769 hasConcept C49204034 @default.
- W2001995769 hasConcept C9075549 @default.
- W2001995769 hasConceptScore W2001995769C107054158 @default.
- W2001995769 hasConceptScore W2001995769C127313418 @default.
- W2001995769 hasConceptScore W2001995769C140178040 @default.
- W2001995769 hasConceptScore W2001995769C147947694 @default.
- W2001995769 hasConceptScore W2001995769C153294291 @default.
- W2001995769 hasConceptScore W2001995769C205649164 @default.
- W2001995769 hasConceptScore W2001995769C24552861 @default.
- W2001995769 hasConceptScore W2001995769C39432304 @default.
- W2001995769 hasConceptScore W2001995769C49204034 @default.
- W2001995769 hasConceptScore W2001995769C9075549 @default.
- W2001995769 hasIssue "2" @default.
- W2001995769 hasLocation W20019957691 @default.
- W2001995769 hasOpenAccess W2001995769 @default.
- W2001995769 hasPrimaryLocation W20019957691 @default.
- W2001995769 hasRelatedWork W2364948917 @default.
- W2001995769 hasRelatedWork W2734089223 @default.
- W2001995769 hasRelatedWork W2792183134 @default.
- W2001995769 hasRelatedWork W3000431196 @default.
- W2001995769 hasRelatedWork W3008703510 @default.
- W2001995769 hasRelatedWork W3083448965 @default.
- W2001995769 hasRelatedWork W3183190992 @default.
- W2001995769 hasRelatedWork W4319597769 @default.
- W2001995769 hasRelatedWork W4321493401 @default.
- W2001995769 hasRelatedWork W4382700597 @default.
- W2001995769 hasVolume "82" @default.
- W2001995769 isParatext "false" @default.
- W2001995769 isRetracted "false" @default.
- W2001995769 magId "2001995769" @default.
- W2001995769 workType "article" @default.