%0 Journal Article
%@nexthigherunit 8JMKD3MGPCW/3F35TRS
%@nexthigherunit 8JMKD3MGPCW/43SKC35
%@nexthigherunit 8JMKD3MGPCW/43SRC6S
%3 sapucci_global.pdf
%4 sid.inpe.br/mtc-m21c/2019/02.08.17.17
%8 Jan.
%9 journal article
%@issn 1350-4827
%A Sapucci, Luiz Fernando,
%A Machado, Luiz Augusto Toledo,
%A Souza, Eniuce Menezes de,
%A Campos, Thamiris Brandão,
%@secondarytype PRE PI
%B Meteorological Applications
%D 2019
%K nowcasting, PWV-GPS, PWV jumps, severe precipitation.
%@archivingpolicy denypublisher denyfinaldraft
%N 1
%P 49-63
%@secondarymark B1_INTERDISCIPLINAR B1_GEOCIÊNCIAS B1_CIÊNCIAS_AGRÁRIAS_I B2_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA B2_CIÊNCIAS_AMBIENTAIS B3_ASTRONOMIA_/_FÍSICA
%T Global Positioning System precipitable water vapour (GPS-PWV) jumps before intense rain events: A potential application to nowcasting
%V 26
%X A rapid increase in atmospheric water vapour is a fundamental ingredient for many intense rainfall events. High‐frequency precipitable water vapour (PWV) estimates (1 min) from a Global Positioning System (GPS) meteorological site are evaluated in this paper for intense rainfall events during the CHUVA Vale field campaign in Brazil (November and December 2011) in which precipitation events of differing intensities and spatial dimensions, as observed by an X‐band radar, were explored. A sharp increase in the GPS‐PWV before the more intense events was found and termed GPS‐PWV jumps. These jumps are probably associated with water vapour convergence and the continued formation of cloud condensate and precipitation particles. A wavelet correlation analysis between the high temporal‐resolution GPS‐PWV time series and rainfall events evaluated in this study shows that there are oscillations in the PWV time series correlated with the more intense rainfall events. These oscillations are on scales related to periods from about 32 to 64 min (associated with GPS‐PWV jumps) and from 16 to 34 min (associated with positive pulses of the PWV). The GPS‐PWV time‐derivative histogram for the time window before the rainfall event reveals different distributions influenced by positive pulses of the GPS‐PWV (derivative > 9.5 mm/hr) for higher intensity and extension events. These features are indicative of the occurrence of intense precipitation and, consequently, have the potential for application in nowcasting activities.
%@area MET
%@electronicmailaddress luiz.sapucci@inpe.br
%@electronicmailaddress luiz.machado@inpe.br
%@documentstage not transferred
%@group DIDMD-CGCPT-INPE-MCTIC-GOV-BR
%@group DIDSA-CGCPT-INPE-MCTIC-GOV-BR
%@group
%@group MET-MET-SESPG-INPE-MCTIC-GOV-BR
%@dissemination WEBSCI; PORTALCAPES; SCOPUS.
%@usergroup simone
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JHMS
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade Estadual de Maringá (UEM)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@versiontype publisher
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@doi 10.1002/met.1735
%2 sid.inpe.br/mtc-m21c/2019/02.08.17.17.41