provider addresses
- CMA OAI : http://wisportal.cma.gov.cn/wis/provider?verb=ListSets
- DWD OAI: http://oai.dwd.de/oai/provider?verb=ListSets
- INMET OAI: http://gisc.inmet.gov.br/oai/provider?verb=ListSets (port 8888 also works for backwards compatibility)
- IRIMO OAI: http://gisc.irimo.ir/oai/provider?verb=ListSets (port 8080 also works for backwards compatibility)
- JMA OAI: http://www.wis-jma.go.jp/meta/oaiprovider.jsp?verb=ListSets
- MF OAI: http://wisp.meteo.fr:8080/openwis-user-portal/srv/en/oaipmh?verb=ListSets
- NOAA/NWS OAI: http://140.90.88.137:8080/oai/provider?verb=ListSets