Changes in HIRS Detection of Cloud over Australia from 1985 to 2001
A long-term archive of cloud properties (cloud top pressure, CTP; and cloud effective emissivity, ε) determined from High-resolution Infrared Radiation Sounder (HIRS) data is investigated for evidence of regional cloud cover change. In the 17 years between 1985 and 2001, different cloud types are an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/5/917 |
| _version_ | 1797416394165321728 |
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| author | Helen Chedzey W. Paul Menzel Mervyn Lynch |
| author_facet | Helen Chedzey W. Paul Menzel Mervyn Lynch |
| author_sort | Helen Chedzey |
| collection | DOAJ |
| description | A long-term archive of cloud properties (cloud top pressure, CTP; and cloud effective emissivity, ε) determined from High-resolution Infrared Radiation Sounder (HIRS) data is investigated for evidence of regional cloud cover change. In the 17 years between 1985 and 2001, different cloud types are analysed over the Australian region (10° S–45° S, 105° E–160° E) and areas of change in total cloud frequency examined. Total cloud frequency change over the Australian region between two adjacent eight-year time periods (1994 to 2001 minus 1985 to 1992) shows the largest increases (ranges between 6% and 12%) of average HIRS total cloud cover occurring over the offshore regions to the northwest and northeast of the continent. Over land, the largest reduction of average HIRS total cloud frequency is in the southwestern region of Australia (between 2% and 8%). Through central Australia, there is a 2% to 7% increase in average HIRS total cloud frequency when comparing these eight-year periods. This paper examines the regional cloud changes in 17 years over Australia that are embedded in global cloud statistics. Examining total HIRS cloud cover frequency over Australia and comparing two different eight-year time periods, has highlighted notable areas of average change. Preliminary reporting of satellite-derived HIRS cloud products and Global Precipitation Climatology Project (GPCP) rainfall products during La Niña seasons between 1985 and 2001 has also been undertaken. |
| first_indexed | 2024-03-09T06:03:37Z |
| format | Article |
| id | doaj.art-ae124a0291b64c748683a685d2604852 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T06:03:37Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-ae124a0291b64c748683a685d26048522023-12-03T12:06:46ZengMDPI AGRemote Sensing2072-42922021-03-0113591710.3390/rs13050917Changes in HIRS Detection of Cloud over Australia from 1985 to 2001Helen Chedzey0W. Paul Menzel1Mervyn Lynch2Remote Sensing and Satellite Research Group, Curtin University, Perth 6102, AustraliaCooperative Institute for Meteorological Satellite Studies, University of Wisconsin-Madison, Madison, WI 53706, USARemote Sensing and Satellite Research Group, Curtin University, Perth 6102, AustraliaA long-term archive of cloud properties (cloud top pressure, CTP; and cloud effective emissivity, ε) determined from High-resolution Infrared Radiation Sounder (HIRS) data is investigated for evidence of regional cloud cover change. In the 17 years between 1985 and 2001, different cloud types are analysed over the Australian region (10° S–45° S, 105° E–160° E) and areas of change in total cloud frequency examined. Total cloud frequency change over the Australian region between two adjacent eight-year time periods (1994 to 2001 minus 1985 to 1992) shows the largest increases (ranges between 6% and 12%) of average HIRS total cloud cover occurring over the offshore regions to the northwest and northeast of the continent. Over land, the largest reduction of average HIRS total cloud frequency is in the southwestern region of Australia (between 2% and 8%). Through central Australia, there is a 2% to 7% increase in average HIRS total cloud frequency when comparing these eight-year periods. This paper examines the regional cloud changes in 17 years over Australia that are embedded in global cloud statistics. Examining total HIRS cloud cover frequency over Australia and comparing two different eight-year time periods, has highlighted notable areas of average change. Preliminary reporting of satellite-derived HIRS cloud products and Global Precipitation Climatology Project (GPCP) rainfall products during La Niña seasons between 1985 and 2001 has also been undertaken.https://www.mdpi.com/2072-4292/13/5/917HIRScloudcloud propertiesGPCPAustraliaregional |
| spellingShingle | Helen Chedzey W. Paul Menzel Mervyn Lynch Changes in HIRS Detection of Cloud over Australia from 1985 to 2001 Remote Sensing HIRS cloud cloud properties GPCP Australia regional |
| title | Changes in HIRS Detection of Cloud over Australia from 1985 to 2001 |
| title_full | Changes in HIRS Detection of Cloud over Australia from 1985 to 2001 |
| title_fullStr | Changes in HIRS Detection of Cloud over Australia from 1985 to 2001 |
| title_full_unstemmed | Changes in HIRS Detection of Cloud over Australia from 1985 to 2001 |
| title_short | Changes in HIRS Detection of Cloud over Australia from 1985 to 2001 |
| title_sort | changes in hirs detection of cloud over australia from 1985 to 2001 |
| topic | HIRS cloud cloud properties GPCP Australia regional |
| url | https://www.mdpi.com/2072-4292/13/5/917 |
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