Global teleconnections in droughts caused by oceanic and atmospheric circulation patterns
Long-duration droughts are usually tied to persistent local or remote forcings; for example, persistent droughts over California are frequently observed along with the ‘ ridiculously resilient ridge’ over the West Coast. It is now evident that some oceanic forcings (e.g. El Niño–Southern Oscillation...
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ftdoajarticles:oai:doaj.org/article:b833509f9b4e4e478dd2f4b85dd8990c 2023-09-05T13:17:27+02:00 Global teleconnections in droughts caused by oceanic and atmospheric circulation patterns Waqar Ul Hassan Munir Ahmad Nayak 2020-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/abc9e2 https://doaj.org/article/b833509f9b4e4e478dd2f4b85dd8990c EN eng IOP Publishing https://doi.org/10.1088/1748-9326/abc9e2 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/abc9e2 1748-9326 https://doaj.org/article/b833509f9b4e4e478dd2f4b85dd8990c Environmental Research Letters, Vol 16, Iss 1, p 014007 (2020) droughts teleconnections scPDSI ENSO Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2020 ftdoajarticles https://doi.org/10.1088/1748-9326/abc9e2 2023-08-13T00:37:11Z Long-duration droughts are usually tied to persistent local or remote forcings; for example, persistent droughts over California are frequently observed along with the ‘ ridiculously resilient ridge’ over the West Coast. It is now evident that some oceanic forcings (e.g. El Niño–Southern Oscillation) have global reaches and affect multiple regions concurrently during their progression. Here, we show robust significant temporal concordancy of persistent droughts in many regions, revealing multiple teleconnections (distant regions experiencing droughts concurrently), such as the ‘Western North America–Mediterranean (WNA–MED)’ and the ‘Southeast Asia–Southern Africa (SEA–SAF)’ teleconnections. Composite pressure and sea surface temperature anomalies during concurrent droughts in WNA and the MED reveal a persistent weather regime that resembles the positive phase of Arctic Oscillation and negative phase of Pacific Decadal Oscillation. During concordant droughts of SEA and SAF, composite pressure anomalies remarkably resemble the El Niño pattern, which we infer as the leading cause of the teleconnection. The insights gained here offer a new dimension to understanding droughts and improving their long-term predictability. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Pacific Environmental Research Letters 16 1 014007 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
droughts teleconnections scPDSI ENSO Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
droughts teleconnections scPDSI ENSO Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Waqar Ul Hassan Munir Ahmad Nayak Global teleconnections in droughts caused by oceanic and atmospheric circulation patterns |
topic_facet |
droughts teleconnections scPDSI ENSO Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Long-duration droughts are usually tied to persistent local or remote forcings; for example, persistent droughts over California are frequently observed along with the ‘ ridiculously resilient ridge’ over the West Coast. It is now evident that some oceanic forcings (e.g. El Niño–Southern Oscillation) have global reaches and affect multiple regions concurrently during their progression. Here, we show robust significant temporal concordancy of persistent droughts in many regions, revealing multiple teleconnections (distant regions experiencing droughts concurrently), such as the ‘Western North America–Mediterranean (WNA–MED)’ and the ‘Southeast Asia–Southern Africa (SEA–SAF)’ teleconnections. Composite pressure and sea surface temperature anomalies during concurrent droughts in WNA and the MED reveal a persistent weather regime that resembles the positive phase of Arctic Oscillation and negative phase of Pacific Decadal Oscillation. During concordant droughts of SEA and SAF, composite pressure anomalies remarkably resemble the El Niño pattern, which we infer as the leading cause of the teleconnection. The insights gained here offer a new dimension to understanding droughts and improving their long-term predictability. |
format |
Article in Journal/Newspaper |
author |
Waqar Ul Hassan Munir Ahmad Nayak |
author_facet |
Waqar Ul Hassan Munir Ahmad Nayak |
author_sort |
Waqar Ul Hassan |
title |
Global teleconnections in droughts caused by oceanic and atmospheric circulation patterns |
title_short |
Global teleconnections in droughts caused by oceanic and atmospheric circulation patterns |
title_full |
Global teleconnections in droughts caused by oceanic and atmospheric circulation patterns |
title_fullStr |
Global teleconnections in droughts caused by oceanic and atmospheric circulation patterns |
title_full_unstemmed |
Global teleconnections in droughts caused by oceanic and atmospheric circulation patterns |
title_sort |
global teleconnections in droughts caused by oceanic and atmospheric circulation patterns |
publisher |
IOP Publishing |
publishDate |
2020 |
url |
https://doi.org/10.1088/1748-9326/abc9e2 https://doaj.org/article/b833509f9b4e4e478dd2f4b85dd8990c |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Environmental Research Letters, Vol 16, Iss 1, p 014007 (2020) |
op_relation |
https://doi.org/10.1088/1748-9326/abc9e2 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/abc9e2 1748-9326 https://doaj.org/article/b833509f9b4e4e478dd2f4b85dd8990c |
op_doi |
https://doi.org/10.1088/1748-9326/abc9e2 |
container_title |
Environmental Research Letters |
container_volume |
16 |
container_issue |
1 |
container_start_page |
014007 |
_version_ |
1776198626420195328 |